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Models 69NT20-274 69NT40-441 69NT40-444

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1. 7 425 SPARE Ga 1 por WHFZOBN PRI WHI BLU R YELTC A TEMPERATURE CONTROLLER 22 WHT REDJ lt B BLU LOGIC BOARD HRI DHTL x WIRES WHT K C ANNUNCI ATOR BEBE BRN DHBR ICR RED lt D PS DHTR AB C DPRSevrO K PF wHT4 3 2 GRN HR23 DPH 8 uu Sao AAAN al CRY C DIGITAL DISPLAY SPARES 6 1837 TANK lt Hes wad ORG dX D USDA one 8
2. N 10 4_S0 CABLE Vs POWER PLUG ABOV lt ar a 460 3 60 62 lt w vaz ss WHY 111121 380 3 50 R LA B2 13 23 41 4 WAY 121 122 lt 1 4 _ 5 777 220 23 8 4 50 vs VOCS TRANS CAUTO POWER PLUG CABLE gt 230V HR A lt T aw a2 u 11 121 230 3 60 B gt 5 B2 81 bh 1 H1 til 121 22 190 3 50 R 3 gv 211 1 13 23 e lt 6 E d FH X SATII x 255 E 24 a ST 5 AMP TB
3. ZONE SYMBOL DESCRIPTIO J18 AMBS AMBIENT SENSOR v ND C COMPRESSOR CONTACTOR D2 1 CIRCUIT BREAKER 4 L8 CDV CAPILLARY DE SUPERHEATER VALVE R22 OPTION L8 N6 CF CONDENSER FAN CONTACTOR J8 CHT CYLINDER HEAD THERMOSTAT R22 OPTIOND 18 CI COMMUNICATIONS INTERFACE MODULE CL 2000 IGHT G8 Q6 CM CONDENSER FAN MOTOR 07 93 COMPRESSOR MOTOR 118 CPDS COMPRESSOR DISCHARGE SENSOR 118 CPSS COMPRESSOR SUCTION SENSOR CSAS CONDENSER SATURATION SENSOR CT CURRE TRANSFORMER as DHB DEFROST HEATER BOTTO PS DHBR DEFROST HEATER BOTTOM RIGH
4. ZONE SYMBOL DESCRIPTIO J18 AMBS AMBIE SENSOR COMPRESSOR CONTACTOR D2 CB1 CIRCUIT BREAKER 4 L8 CDV CAPILLARY DE SUPERHEATER VALVE CR22 OPTIOND L8 N6 CF CONDENSER FAN CONTACTOR J8 CHT CYLINDER HEAD THERMOSTAT R22 OPTION 18 COMMUNICATIONS INTERFACE MODULE G8 QG CM CONDENSER FAN MOTOR 07 93 COMPRESSOR MOTOR 118 CPDS COMPRESSOR DISCHARGE SENSOR I18 CPSS COMPRESSOR SUCTION SENSOR J18 CSAS CONDENSER SATURATION SENSOR J2 CURRE TRANSF ORME 95 DHB DEFROS EATER BOTTO EFT P5 DHBR DEFROS EATER BOTTOM RIGHT P5 D DEFROS EATER TOP LEFT 05 DHTR DEFROS EATER TOP RIGHT 5
5. LEGEND ZONE SYMBOL DESCRIPTIO J18 AMBS AMB SENSOR L7 N2 COMPRESSOR D2 CB1 CIRCUIT BREAKER 4 L8 CDV CAP ARY DE SUPERHEATER VALVE 22 OPTIOND L8 N6 CF FAN CONTACTOR J8 CHT DER HEAD THERMOSTAT R22 OPTION 18 COMMUNICATIONS I RFACE MODULE 58 95 CONDENSER FAN MOTOR 07 93 COMPRESSOR MOTOR 118 CPDS COMPRESSOR DISCHARGE SENSOR I18 CPSS COMPRESSOR SUCTION SENSOR J18 CSAS CONDENSER SATURATION SENSOR J2 CURRE TRANSFORMER Qs DHB DEFROS ATER BOTTO RS DHBR DEFROS ATER BOTTOM RIGHT 5 DHT DEFROS ATER OP 05 DHTR DEFROS ATER OP RIGHT 5 DPH DRAIN PAN HEATER C
6. G H I J K L M N Va 10 4 POWER PLUG CABLE B lt B8LK 11112 2 gl 52 wWHT 12 22 12 22 bi 1 RED i 131123 L lt 6 PT _ 5 H1 H4 AAA 460 3 60 H3Q 9 He 111121 5 12 5 x 2 22 24VAC 13 1 23 ST x J 5 0 5 of AMP 2 1 Qa 6 AMP 3 Trez IP CP HPS rB5 c AMP 11 BS PD2 IPD20 cT Ucal lt pe B UVT m 170 0 O 1 2 41 307 TB12 15 TN me P4 CF
7. NBSNT35 1148 REV 59NT20 3263 G H 1 M N P 10 4 50 POWER PLUG CABLE BK 1 711 21 5254 12 22 Tal 122 T3 lt B3 13 23 131123 L lt 4 HR Fh PT Hl 4560 3 60 n H3 Q OH2 11 121 OR 380 3 50 J 2 TM 12 122 5 X1Q vvvvv Qox2 13 24 13 23 a a 3 FOES SEES 58 1 ST 04 a oo 2 1 1 Lowe 1i 21 3 5 5 TB2 IP CP TB8 HPS TBS TC 13 123 89 298 PD2 Pp20 fiy ES 3 11 TB1 lt EF 11 1 12 2 111121 9 12 LC 121 22 TB12 IP CM 15 T 122 1
8. C D E F G H J K L M N O P Q R 10 4 50 vs POWER RECEPTACLE CABLE 460V Es FH 1 1 nva ha e ee 490 3 60 x M 12 360 3 50 326 R a ata mi 21 P lt 6 B2 77 12 22 n CR TRANS AUTO VS 131 153 T CB2 230V 1 4 HR 275 BK 1 v 2 1 T 111 21 230 3 60 gt IBS Hm Td 12VAC 121 22 190 3 50 R 3 21 5 CY x 2 131 123 L 24VAC 713 pon Se 8 EC Sac lt F3B 1 5 o o Til 21 3 5 272 C zie F 5 AMP 5 AMP IP TRANS 13 123 4 8 IP CP TBB HPS tes AUTO TC S O 2 1 PD2l 020
9. G H 1 J K L M N Va 10 4 SO er POWER PLUG RI F J m 222 12 122 Tal 22 T3 lt B3 13 23 23 L lt 4 5 PT us m HR 4560 3 60 H3Q 2 111 151 r 380 3 50 J 2 gt 12 122 5 7 TB13 24VAC 13 23 a a it TBI ST aya s 5 o o Mp 2 1 CF 1 5 ANP 1 21 3 5 5 n dis 27 HPS TBS Tc S 9 9 0 13 23 4 89 588 PD2 PD20 clea E SRM B CU cs 17 WT wv a e TT EF 11 2l 1 12 CHT 2 11 21 4 121122 2 ILC 121122 IP CM TN 12 TB15 ct sal bg 2 0 2 013 2 131123 AA IP EM IP EM TB14 TE N EF 2 12 gt P2 P1 PDe PD18 311141 cca N ni 1 2 HTT TH
10. C11 CB21 C12 CB22 4 C13 CB23 a c EE C SERE ilit sT2 h ga peo 1 2 52 l gt HIT 3 emp GRO D O Q PC _PD17 DTT SHLD 610 4 X psa SHLD ppa2 5 6 SHLD SHLD ANIAN AN O 8 16 20 24 PD4 1 H 6 DI 0TT 5 2 4 2 1 7 D TBS x tre 1 s 6 Tu 217 g PDI6 A 8 21 0 9 av REDT 4 J LEE 08 0100 55 d 3 and PT 2 0120 1 TRX2 NV TAX 5 0 130 17 Q BLK 7 3 BLK p PD6 1140 EMP1 PM RN A S 5 PD14 4 0 150 0160 4 mE O LS 0 0170 0180 KEYWAY KEYWAY 5 BI
11. 1 2 3 4 tol mm 1178 fe fe 8 ah 8 cH oll 5 5 5 9 olli Q LI 08 S S ls ls S S olii ol Z Z Ej O Orfe SZ oft S S 5 85 O Cool Heat Defrost O In range Alarm cH SETPOINT Code AIR TEMP Data S ol s pow 22 0 F 2 SBA SPARE DataCORDER PA SPARE e pa SPARE ALLE 6 6 6 1 Screw 4 Microprocessor Control Box 2 Spacer 5 Screw 3 Cover 6 Microprocessor Control Panel Figure 4 26 Microprocessor Control Box 4 21 PART NAME MAIN BEARING Main Bearing Diameter Main Bearing Journal Diameter PUMP END Main Bearing Diameter Main Bearing Journal Diameter CONNECTING ROD Piston Pin Bearing CRANKPIN DIAMETER Throw 28 CFM CRANKPIN DIAMETER Throw 37 CFM CRANKPIN DIAMETER Throw 41 CFM THRUST WASHER Thickness 28 amp 37 CFM THRUST WASHER Thickness 41 CFM CYLINDERS Bore Piston Diameter
12. LEG ZONE SYMBOL DESCRIPTIO J18 AMBS AMBIE SENSOR L7 N2 C COMPRESSOR CONTACTOR D2 CB1 CIRCU BREAKER 460V L8 CDV CAPILLARY DE SUPERHEATER VALVE R22 OPT ND 9 CONDENSER FAN CHT CYLINDER HEAD THERMOSTAT CR22 OPTION 18 CI COMMUNICATIONS I RFACE MODULE L7 CL IGHT 59 96 CONDENSER FAN MOTOR 07 93 COMPRESSOR MOTOR 118 CPDS COMPRESSOR DISCHARGE SENSOR 118 55 COMPRESSOR SUCTION SENSOR J18 CSAS CONDENSER SATURATION SENSOR J2 CT CURRE TRANSFORMER 95 DHBL DEFROS ATER BOTTO 5 DHBR DEFROS ATER BOTTOM RIGHT P5 DHTL DEFROS ATER LEFT 05 DHTR DEFROS ATER OP RIGHT K12 DL DEFROS IGHT 5 DPH DRAIN PAN HEATER C12 DTT DEFROST TERMINATION THERMOSTAT K10 L9 N7 EVAPORATOR FAN CHIGH SPEED DS F9 Q8 Q9 EVAPORATOR FAN MOTOR K9 L10 07 ES EVAPORATOR FAN CONTACTOR CLOW SPEED 5 USE FLA FUI OAD AMPS G11 CS UMIDITY CONTROL SWITCH E7 PS IGH PRESSURE SWITCH L10 N4 R ATER CO
13. DHBL TEMPERATURE CONTROLLER HR22 HR21 DHTL ANNUNCI ATOR BUGLE BOARD DHB PF 3 HR23 DHT PF DIGITAL DISPLAY 9609 n T 299 1LCTH8 BRN 5 PK ws TBI PG 7 BLK 1 0 BOARD TB3 R TB4 9 BR 2 1 M RTS 16 wes 224 4 524 3 4 lt lt 5 C11 VSA4 s C12 VSB4 X cr x 7 E CT IP lt 5 2 965 3 1 ae 209 po22 D0 5 D HPS Pa Ale 4 060 0 6 PD2 HU 7 O mE 8 HPS MZ lt 6 208 D gt 9506 q 4 4 2 r PAS 2 J J PDS aen pd 3 BuPPRESSOH 0110 PT7 TRX2 2 omp D0120 we T 5 91 30 17 Q BLK 2
14. 27 a LOGIC BOARD HR21 s UNCIATOR m 90 DHTR HR23 PF DPH DIGITAL DI S 4 5 45 290 8 RS j J J PG GR A QUEE uc NP TB4 0 8R 1 i 224 lt D GHE 5 5 C11 VSA4 Gs 12 584 3 BLK C13 VSC4 TP 3 a SPARE AUTO TRANSFORMER uu 4 RE j 9199968 Fe V HIT R PC Tia i 260 3 8 ne 10 OOA PD4 5 PD2 AS 1 5 8 z 1 8 PDI5 8 2 a 4 p PD21 4 8 N e162 Q 03 TRX2 PTS 1 7 3 BLK E i 14 12 PEIB SIDE PE10 MDS PD7 lt gt 4 D gt LOCATING TAB ON BOTTOM e e S LET SIDE x m 5 4 4 4 n mnn LK gt 28 gg 29 PN 121314511213 Tl cap ICF
15. G J K L M N 10 4 POWER POWER PLUG o c 1 mir Bl B2 460 3 60 52 4 BLU d wal bs 3 50 lt DO B 13 23 131 23 L lt GRN YEL Fh HI m mi 1 12 22 24 13 123 TB13 a s 5 lt 5 F3B ST 5 TBI 0779 1 25224 3 5 5 5 AMP IP CP HPS mo 1 23 4 8 88 OL 1020 m a 8170 0 lt lt M a 1 DEA ES 3 1 2 Til 127 1 12 9 6 lt Tl 1 WP 7812 7815 TN c 1 Tal 22 Cale 0141 IPD13 d 2 1 4 Tal 23 P1 P2 Poe PD18 314 EC 4n TV EF ES N D 2 12 PPY 2 HTT TH 7 Pog 1010 n y PD171 PD21 SSV PD8 m lt gt DCBA DCBA Hes TB Y YY Y O O TB4 DTT TB21 1 3 o MDS DEFROST SIGNAL 20 79 1 USDA BATTERY MODULE PN T 7A 2 2 8
16. D E F H I J K L M N 10 4 POWER POWER PLUG CABLE si I BLK RI lt m Ma Ha m 4 0 3 9 52 lt BLU 22 12 22 d 380 3 50 13 as 131123 7 GRN YEL i HR H3Q OH2 21 12VAC TM 5 XI Y so 2 zu J 24VAC 18 53 a a 3 3 ay 5 55 5 5 cr 1 I 5 6 1 TBB 5 TBS TB7 TC 12 29 oro r1 555 2021 2 jur TB17 lt lt V 3 11 CHT 2 CDV FF 111121 1 12 lt w 21 12 1 15 TN 5 SA 2 4 ofc m 121 22 5 PD14 1 1721 55 IP EM 14 EF 131123 Plc p2 2 2 P1 1 cid c2 131123 PES TV EF ES N 1 2 12 Pos 2 3 Bu HTT 16 n HR f cid 2 2 1 55
17. 1 2 3 4 5 6 7 10 nea mes amp S DIN e oL lu al S _ O gt S L 8 Z a i amp 6 6 Cj TT S eese CoolO Heat DefrostO In range Alan 20 SETPOINT Code AIR TEMP Data 4 10 V 9 1 UN LANG 5 o oe 277 L 18 17 16 15 13 14 12 11 UNITS WITH ONE SPEED EVAPORATOR MOTOR 1 Compressor Contactor C 12 Control Transformer TR 2 Condenser Fan Motor Relay CF 13 Control Fuse F 6 amp 3 Heat Relay TH 14 Fuse F3A amp F3B 5 amp Slow Blow 4 Evapor
18. B 0 6 H J K L M N 0 P Q R 10 4 80 CABLE POWER PLUG 460 E RI lt 46073 60 52 lt Sara hs 380 3 50 E 1352 R aus c lt rh vs 111121 230v 2 CJ 121 22 8 74 CT A HR 13 123 230 3 60 w 51 19055 50 n fer R vs dcm 8 1 121 122 H 41 12 8 4 50 1 4 CABLE FT 131 123 1813 2 zs amp BO 2842 25 pan 5 12 7 5 1 6VAC lt AMP 0 4 t l 21 1 2 1 oo 24VAC F6 2 1 13 23 2 785 TB7 182 n 21 52 o 1 U aduer oS P020 2 fe 121 122 17 gt lt iva 13 123 iN 1 DA CHT 2 o lt a nc O we 12 Ip cH TB15 TN 929 Pi ope 2 T TE EF 183 TB14 NN 3 B2 P2 P pos PD18 c1 183 HTT 1816 HR 1 T uns Pog Ts TB10 88v Fu TB1
19. 51381 0397 2293 1154 CIA CIB3 CIA3 FROM PROVISION FOR OPTION REF RING TERM END CIAS CIA7 O H eE G F3B TBI FROM CIB PROVISION FOR OPTION BLK 11 312 WHT gt 13 opi b 5 VSA3 VSB3 Vsca 23 1 gt 2 N vsa2 lt 4 gt N vsc2 lt 6 gt 5 2 0 h z m VSH2 CPA Ho ok 3 eee TIE E NET gt d HE ON D 9 ELH3 FEAGA IE r iia 2 aa C gt
20. val 7 4421 m 8 DHBL WHT BLU f 4 TEMPERATURE CONTROLLER u HR22 WHTZRED B BLU WIRES ANNUNCIATOR eeee BRN FOSTEX BOARD DHBR ICR RED K D PF iiir DHTR CD VIOK 3 2 GRN HR23 Loy PR 52252 AAAN 4 GRYK C DIGITAL DISPLAY SPARES 6 tank lt c FROM pas m L D USDA SHIELD CABLE TB11 E 10 ven TB17 RED UV1 7 LE 1 0 BOARD n TB4 BR 2 1 2a P 4 4 3 3 11 21 HS C12 CB22 ui DPD C13 CB23 vow CT gt m m m uj gt 0 99 9 pe Te cae 9606 F amp 2 9585 ES Ha 0 PD17
21. C11 VSA4 2 6 0B 12 884 1 C13 VSC 1313 MMIM a etri LPa 29298 28928 2538 Do 1 6 21 F6 2 E9 HTT 3 1 O id D upsz S sutp 5 19 20 5 01 89 4 SHLD Pie 204 956 DTT L gab 8 2 16 20 24 202 197 ores ze O PS pu Hores 21 AN ys ii 5 PRE 090 oc 20 5 08 0106 55 7 0181 RED 4 ono AN P pos ne cupi 1120 19 136 17 2 BLK 7 OST s cu A 06 0 140 reo 2014 1915 xs 9 Vp 09 16 uvt BLU 7 gt ne eur 651 9170 RB Uv lt lt e PA PE12 1 0 18 peletoigo t suv cut lt lt KEYIAY 10 0200 6 EDV ncn M gt L LOCATING TAB ON BOTTOM P dini
22. LEG ZONE SYMBOL DESCRIPTIO J18 AMBS SENSOR L7 N2 C COMPRESSOR CONTACTOR D2 CB1 CIRCU BREAKER 4 L8 CAPILLARY DE SUPERHEATER VALVE CR22 OPT N L9 NG CF CONDENSER CONTACTOR CYLINDER HEAD THERMOSTAT 22 18 CI COMMUNICATIONS I RFACE MODULE 220 CL IGHT Q6 C CONDENSER FAN MOTOR D7 Q3 COMPRESSOR MOTOR 118 CPDS COMPRESSOR DISCHARGE SENSOR I18 CPSS COMPRESSOR SUCTION SENSOR J18 CSAS CONDENSER SATURATION SENSOR J2 CURRE TRANSFORMER Qs DHBL DEFROS ATER BOTTOM PS DHBR DEFROS ATER BOTTOM RIGHT PS DHTL DEFROS ATER OP 05 DHTR DEFROS ATER OP RIGHT K12 DL DEFROST LIGHT 5 DPH DRAIN PAN HEATER C12 DTT DEFROS TERMINATION THERMOSTAT K10 L9 N7 EVAPORATOR FAN CONTACTOR CHIGH SPEED D9 F9 Q8 Q9 EM EVAPORATOR FAN MOTOR K9 10 07 ES EVAPORATOR FAN CONTACTOR CLOW SPEED AS USE FLA FUL OAD AMPS G11 CS UMIDITY CONTROL SWITCH PS IGH PRESSURE SWITCH L10 N4 R ATER CONTACTOR E10 TT A TERMINATION THERMOSTAT E18 Ic INTERROGATOR CONNECTOR ILC IN LINE CONNECTOR R22 OPTION C7 C9 F9 C9 IP INTERNAL PROTECTOR K12 IRL IN RANGE LIGHT
23. D E F G H J K L M N O P Q R 10 4 50 POWER PLUG AME i T Bk X Ri S illo B1 460 3 60 52 NC 121 122 m er 3680 3 50 18 2 R J 131 123 l 1 4 xp Fh PT HR 1 H3Q 111 121 12VAC 121 122 1 2 131 123 24VAC 4 p 7813 iet F38 ST 1 5 re nie Cs I 2 F 63 4 8 Tu IP CP TBB HPS 5 TC 0 50 DS Poal 020 2 E 3 11 CFS 1812 IP CM TBIS IN t 1 12 11 Li 4 2 1 P1 B 0141 IPD13 ks 183 IP EM IP EM 7814 n EF 121 22 Plc P2 P2 Pos IPD18 2 731 123 ES 131 123 m Poe 31 T 2 2 12 HTT 16 IH HR 5 Pos 19010 2 1 TQ 021 5 SSV DIT 7821 MDS DEFROST SIGNAL 2 1 o 6 1820 y 7819 777 2 3 4 5 6 2 2468 15 po 1 2 8 4 5 7 6 oT 12 19 14D i5 ve 17 t6 v9 20 21 222324 9 CONTROLLER PH gt 7 4 15 6 1 0 BOARD PH LOGIC __ 9 1 2 5 7 6 9 4 6 B PA pe PG 1127314 1518 1 8 9
24. ep P gt 302 43 m 2 14 14 J IM Lid M 134 m 9 094 8 zu Di e743 S SUME EE Ces E lt gt s HIA 5 5 5 Gui TEE ER 2 amp 8 m 2 i 7 amp ara Goby zx TES r Leigh 62 EUN U 2 leen 2858 XLI DION R 5285 EES LORS GN eun 5 veros 8 1 saa C 28 oM E RC AL 2 29 9 XI lt N 1394 tHaa E s oS QOC 5 11394 gt jj 25555 Pd Y d IH 5 lt SYNC Yu 3 3 ol04 5 POR ax 82288 Ez z EIE H Y 229 Io o vou es YA Ses e svao 9
25. 1 Evaporator Fan Motor 1 1 9 2 Humidistat HCS Optional 10 3 Return Air Temperature Sensor RTS 11 4 Chart Recording Thermometer Bulb 12 5 Return Recorder Sensor RRS 13 6 Defrost Termination Thermostat DTT 14 7 Evaporator Fan Motor 2 EM2 15 8 Evaporator Coil 16 Heater Termination Thermostat HTT Evaporator Coil Heaters Drain Pan Heater DPH Dummy Receptacle USDA Probe Receptacle PR3 USDA Probe Receptacle PR1 Interrogator Receptacle USDA Probe Receptacle PR2 Figure 1 2 Refrigeration Unit Rear Panels Removed Revised 8 6 93 1 4 13 11 12 20 10 9 8 UNITS WITH WATER COOLED CONDENSER UNITS WITH RECEIVER Compressor Discharge Sensor CPDS If Used High Pressure Switch HPS Compressor Suction Sensor CPSS
26. 10 4 80 vs CABLE POWER PLUG 4607 Hh RI lt vg 460 3 60 32 lt ag 380 3 50 gt 13 76 s lt 8 l Fh NS J 21 CB2 230v 121 22 6 131 23 HR 2003759 i 2 5 2 1 190 3 50 R Tl 3 caller vs 121 22 m TH ail ak2 7 8 4 50 1 4 CABLE 23 TB 3 3i be a e e 5 1 28 I F3A F6 2 9 5 6 AMP 131 23 182 TB8 HPS wg PIT 3 RM 17 a 1 a CHT 2 we 12 IP CM 7815 TN cr 405 PD14 Uc2 IP EM 814 EF Sos Eon PD6 8 ci Uc2 HTT 16 HR ios Pog ci Uez TS TBIO SSV PD17 18 RM peg 2 pe 4 DTT TB6 T821 RM OM 0L gt NN QUI 0 6 Z z USDA BATTERY PACK 1 1 1820 teig X 39 1 AMP 1 2 3 4 5 6 7 11 12 1 14 165 18 17 15 1 2 3 4 s e 7 s 12 13 14 15 16 17 18 19 20 21 22 23 24 2 ONTROLLER PH 3 2 114 5 6 R 1 0 BOARD ae a 9 7 215 7 6 3
27. 460 3 60 GRD 12 15 am N 5 L 280 SENE dam 2253 5 KD n E P K 7 eza Bs un Sm 5 k 2 AX zina uD 1159 __ Li D apy Sz z lt kaz Bogg o 104 5 T 1253 55 5 153 5 lt u O iraa 5 oes PD 193305 5 810a 1 3 8 PH 139 X RY D z m ioc 25525 DO 0 EL ADS Lida ooo 25222 die 1192 Sza 92 605 5 m 4 PHO C 1 5 56 ES SE orad H5 22 OG uU j g n I exy1 co33 4 PED A zou amp 209 4 14H PO QT S yy 5 eraa l 4 o OY caer zzao AD NY L 82 K LESS 8
28. 1 DHBL vSK4 A TEMPERATURE CONTROLLER HR21 E ANNUNCIATOR LOGIC BOARD DHBR d OBO HR23 DPH DIGITAL DISPLAY ACA Sze COO LC1 98887 PK 22 TB17 6 RED UVT PG 1 0 BOARD wa F 784 8R RIS TB16 0 R L TB6 4 BR 225 0445 lt acc a C11 VSA4 SL 5 gt H cL PB 12 8 4 13 8 4 Y MMIM 15858 voton 0 282985 5518 5 soe MEN sre Im E V Pes HIT 3 1 o I u052 SHLD 9 99 9 9 pepe AN ANIAN BA SHLD 4 0 6 Hort rss 8 2 16 20 24 02 5 7 85 I HPS Lm C 989 88 a i o z 1 8 5 Pg 090 8 g gt T Pos 01100 ssv 7 0181 RED H 4 HELPS EM EMO 3 TRX2 o 20 7 2 P ips PTS 0130 17 RNA T BLK 7 3 BLK T 206 914 2 1 TES RED RI ORN 9 S orn 014 0 15 2 AN PM PD9 H116CI HTT ILC UVT BLU 7 RED 0170 ewe 1 PE12 C118CI PE18 O119C suv CHT
29. 11 4 POWER PLUG CABLE c T BLK RI T m Ma 11 1 21 pI A 82 7 450 2550 52 BLU 175 7725 J 121 52 25 380 3 50 T3 BRN 2 1311 23 eRN YEL Br SN HR B 11 21 I 12VAC 7215 5 UY 1 24 131 23 ET PA T Sg as 5 55 5 2 c 5 1 cF 1 2 111 21 3 5 5 AMP 5 TBS 131123 4 8 g 21 PD20 ca UVT v 17 lt lt ay ES d 1 DA 3 11 EF 111121 CHT 2 CDV 1 12 Or Kp 1 2 12 1 15 TN PA cr 121 22 5 4 ci ca 121 22 IP EM IP EM 14 23 131 as 4 11 ES 2 12 N 0 pos 511 2 3 1 I3 HTT 16 TH HR is 3 55 17 2 PRI Hes TBI DCcBA DCB A 4 OTT TBS 1 3 2 MDS DEFROST SIGNAL so O4 USDA BATTERY MODULE L f 2 2 SMV 1 MEF TB20 19 77 LL T 1 12 gm gt L TT 2 3 4 56 7 Ie 2131 2 1 2 3 4 587 Ie pd ps
30. H I J M N R N POWER PLUG vs CABLE cBi 450V Fh lt Bh 11 AS y 450 3 60 8 E 12 22 est ba n 380 3 50 n nia El GR lt 2 rh 121 22 53 8 4 50 PLus CABLE TRANS AUTO VS Tal 23 ZT HR ACST BK av A2 m H3Q OH2 11 23078 99 B 2 5 821 Igi 1980 3 50 ARP 12 12 3 5 c2 5 o 1 6 24VAC 13 4 x a mi T813 t a a 1 F38 e 5 Q VN 1 2 51 3 5 IP TRANS IP CP T88 HPS TBS CAUTO TB TC 13 23 4 8 2 550 2 1 Poa 020 RM 1170 Be 5 3 11 EF 21 mE a 11 21 di 121 22 gt WE TB12 15 it Ln Boe PD14 PD13 187 23 14 4 11 TB3 i i P1 o P2 Pps 1 2 12 N I 3151 HTT TH TB3 16 pos TI T amp fin 2 D TB4 DTT TB21 RER MDS v 2 04 TB20 J TB19 1 213 415 6 poo pop Apenep7 1 2 3 4 5 8 7 pap ise 2324 CONTROLLER m 3 2 1141516 12028000 BH LOG
31. D E F H I J K L M N N cT 11 4 POWER POWER PLUG CABLE css n T R1 BLK 11 21 B2 B rm 52 BLU 12 22 380 3 50 BRN a i P 1311723 L lt LeRN YEL E zT HR 7 Q H2 11 1 21 12VAC c ce 5 UY 2 1552 24 23 1 a 1 25 BES DE F38 ay 5 55 5 ST 5 1 077 cr 1 e n 3 5 F3A 5 6 ua IP CP 5 TBS TB7 TC 207 23 rj PI 2021 20 17 0 0 lt lt IY s 1 ES 3 11 CHT 2 EF 111 21 5 rcov 1 12 tl n 21 WP TB12 IP CM TB15 TN cr gt gt 4 ciLic2 2 14 EF 131 1 31 2 131 23 pore 5 N 1 2 12 315 Uca 3 Buc BT 16 Li Pa _ Pos PD10 i 55 PR2 PRI fies DCBA DCBA O O TB21 1 3 DEFROST SIGNAL 20 79 _ USDA BATTERY MODULE 5 L f 2 2 59 1 1155 2 777 3 3 5 _ 1
32. ZONE SYMBOL DESCRIPTIO J18 AMBS AMBIE SENSOR L7 N2 C COMPRESSOR CONTACTOR D2 CB1 CIRCUIT BREAKER 460V L8 CDV CAPILLARY DE SUPERHEATER VALVE R22 OPTION L8 N6 CF CONDENSER FAN CONTACTOR CHT CYLINDER HEAD THERMOSTAT R22 OPTIOND 18 COMMUNICATIONS INTERFACE MODULE K6 Eb 00 IGHT 96 07 03 118 5 COMPRESSOR DISCHARGE SENSOR 118 CPSS COMPRESSOR SUCTION SENSOR CSAS CONDENSER SATURATION SENSOR J2 CT CURRE TRANSFORMER 95 DHB DEFROS EATER BOTTO EFT PS DHBR DEFROS EATER BOTTOM RIGHT PS D DEFROS EATER 05 DEFROS OP RIGHT K12 DL DEFROS IGHT 5 DPH DRAIN PAN HEATER C12 DT DEFROST TERMINATION THERMOSTAT 8 EF EVAPORATOR FAN CONTACTOR HIGH SPEED 08 09 EM EVAPORATOR FAN MOTOR K8 L9 07 ES EVAPORATOR FAN CONTACTOR LOW SPEED 5 14 FUSE FLA FUI OAD AMPS J11 CS UMIDITY CONTROL SWITCH PS IGH PRESSURE SWITCH 4 R EATER CONTACTOR D10 TT EAT TERMINATION THERMOSTAT D18 E18 1 INTERROGATOR CONNECTOR 7K ILC INLINE CONNECTOR 22 OPTION 68 INTERNAL PROTECTOR Ki IRL IN RANGE LIGH E12 MDS MANUAL DEFROST SWITCH L1 PROBE PLUG RTND L17 011 P11 PR PROB
33. w Refrigerant Recovery Unit 5 Refrigerant Cylinder Evacuation Manifold Valve Vacuum Pump Electronic Vacuum Gauge Liquid Line Valve Condenser Coil Suction Service Valve Compressor Discharge Service Valve Evaporator Coil O 0 1 O QP GD N 10 11 12 Figure 4 1 Vacuum Pump Connections a Remove all refrigerant using a refrigerant recovery system b The recommended method to evacuate and dehydrate the system is to connect three evacuation hoses Do not use standard service hoses as they are not suited for evacuation purposes as shown in Figure 4 1 to the vacuum pump and refrigeration unit Also as shown connect a evacuation manifold with evacuation hoses only to vacuum pump electronic vacuum gauge and refrigerant recovery system c Withthe unit service valves closed back seated and the vacuum pump and electronic vacuum gauge valves open start the pump and draw a deep vacuum Shut off the pump and check to see if the vacuum holds This operation is to test the evacuation setup for leaks repair if necessary d Midseat the refrigerant system service valves e Thenopen the vacuum pump and electronic vacuum gauge valves if they are not already open Start the vacuum pump Evacuate unit until the electronic vacuum gauge indicates 2000 microns Close the electronic vacuum gauge and vacuum pump valves S
34. TEMPERATURE CONTROLLER HR2 DHBLI nau HTL 20616 BOARD DHBR m 80 HR23 5 DIGITAL DISPLAY AOA iil IO 8 LLC1 9 BRN 8 ars ps BLK 1 0 BOARD 8 TB3 e R TB4 e8R 5 1 RTS ctm eT 20 e GHE 5 5 11 21 6 5 NM PB C12 CB22 c NS TN N NNN C13 CB23 54 15 gt oo m ce o e f I I _ 2 6 2 5 Ka HTT 3 EMP 1 1 GRO Pa DTT N GRD 454 wos2 SHED T5 D 3 3 20 5 H HPS SHLD AN AAG Ge PD4 O 6 H DTT BRD 6 am cae a 2 0 7 CH T85 A 15 f HPs L t 1 2 p pop ggn p PD21 0 9 H av 4 ove 5 8 0100 95 CIB1 a 2 mia P put 2e crsi TRX 9 N 5 0130 1 7 Q BLK Q 3 T BLK 6 0140 1 ORN A m DEN 14 0150 2 94 E 0160 uv a Q REP cc1 a1 70 PA l IKAT KEYWAY PE18 0190 5Mv CHT IA SIDE SIDE W 10 01200 5 ILC CES MDS 5 0210 m 2 S
35. lt lt TF OPTION ary XXE mrze 11 poa TEMPERATURE CONTROLLER IT SSSS WHT BLU 8697 LOGIC BOARD E BRN 8 Er WHT RED BLK K B 8 zzii WHT 2 2 GRN HR23 48 60 ier RED D PF SE v ABCD PRO DIGITAL DISPLAY SPARES FROM reo 5 OQ ax GRYK BUT PG AN 5 Bass KD BANK ORG 8 Q SHIELDA rei TANTS E PK a Pe 1 0 BOARD RRS 5 TB3 R UA 2 1 RIS 2 gt G 4 3 45 3 5 5 C11 CB21 5 C12 CB22 NM E C13 CB23 p Y MY a
36. DI of SIDE a a ST ae ee I I 28 28 1213145 11213 FO FF D B N o 9 99 ee di QJ 0 lt gt gt E 25 25 49 sA 5 amp amp B BI eer b ARTWORK 69 735 7884 REV B Figure 5 8 Electrical Wiring Diagram Model 69NT40 444 4 Sheet 2 of 2 5 17 12 K9 L8 N D8 F8 08 09 K8 L9 07 AS B6 C14 F L9 N4 ES D18 E18 C7 C8 F8 G68 12 L1 G4 H10 1 616 K19 618 F14 H18 110 H18 LEGEND SYMBOL AMBS DESCRIPTION AMBIENT SENSOR COMPRESSOR CONTACTOR CIRCUIT BREAKER 460V CONDENSER FAN CONTACTOR CONDENSER FAN SWITCH COMMUNICATIONS INTERFACE MODULE CONDENSER FAN MOTOR COMPRESSOR MOTOR COMPRESSOR DISCHARGE SENSOR COMPRESSOR SUCTION SENSOR CONDENSER SATURATION SENSOR CURRENT TRANSFORMER DEFROST HEATER BOTTOM LEFT DEFROST HEATER BOTTOM RIGHT DEFROST HEATER TOP LEFT DEFROST HEATER TOP RIGHT DRAIN PAN HEATER DEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR HIGH SPEED EVAPORATOR FAN MOTOR EVAPORATOR FAN CONTACTOR LOW SPEED FUSE FULL LOAD AMPS HIGH PRESSURE SWITCH HEATER CONTACTOR HEAT TERMINATION THERMOSTAT INTERROGATOR CONNECTOR INTERNAL PROTECTOR MANUAL DEFROST SWITCH PROBE PLUG RTN
37. B D E F G H 1 J K L M 10 4 50 CABLE POWER PLUG T 460 R lt BK 460 3 60 52 lt W zum atte 380 3 50 R m Tea L lt 6 Fh vs WH 230V CB2 T hi inti 230 3 60 v T ls HR OR 190 3 50 21 3 2 1 vs L 22 8 4 90 TH 1 4 ta CABLE PT 23 TBI3 u 5 lt 5 5 s 4 7 5 1 L 1 2 ia Tesi 24VAC 2 2 1 5 TB2 IP CP TB8 HPS TBS 187 TC 1 11 for Sos OX Ppa 020 7817 eS 121 22 TB12 i TN 1 7815 n ilz 1 PD14 Ipp13 ciLic2 TB3 IP EM IP EM 7814 P1 P2 P2 18 HTT TH HR TB3 7816 n IPD10 ciui TES PD17 PD21 ii SSV PD171 T TES ay y 12 oS Uu DIT 785 7821 RM cS 5 MDS 20 6 5 USDA BATTERY PACK I 1 2 _ H3 7 5 1 AMP 1 2 3 4 5 6 7 8 9 1 12 13 14 16 18 17 15 2 3 4 5 6 7 8 9 123140516 17 18 19 20 21 e T CONTROLLER PH PM s 2 1 4 s T 1 0 BOARD LOGIC BOARD m PK PA PG 12131 91515 819 4 1 11 20 7 21 19 8 24 1 22 2 13 3 18 5 23 9 10 14 16 R I F P
38. Z iiti o 4 13 3 84 8 8 0891 Ca NP rr Y L x f TEE BE em 3 E CS que M 21534 LLWI 5 D i BBS B 1153 241 um cA EPE co 5252 419 D ph HR p g S Q 5 aHa E 5 C N E SG GH ra Ca pm amp Dat g KE RHH y 3 T 1111 1 1 e lt a gt 1133 A 84 1 gt 95 1613 Y XI 5 EE 8 amp Ll A be Bo D SG 8 04 o C 894 l eX RHno 22801 n X9 12804 NA 5 Q ToS a 5 an m gt L 5 59 n 8 55 5 5 8 92 gt 8 8 amp ge E n n a E u lt 5 E on m B N YEL u e BL 4
39. gt 22 1 1 EN CF21 ele IDe EF22 2 3 522 13 1 6521 A q3 34 ES23 522 2 1 4 HcrF23 e T2 44 e TB3 1 fis EMG EMP2 EMG 2s GRD RD AS SN XY m Qu m z m L m iu e o 1 DO Tu Tu T uj T U AN lt gt a NO sm oe Sei a tA m m m E m 555 5 5 556 7 LX QU d Ep ay X Q LZ IIBB SEE 2 ui 508066 2 47 SAI 1 EE hou ANA NN lt 26 e mn TR oFERRITE CORES FOR OP TION sm SM wines NO OF NO OF END C183 TURNS WIRES FROM CIB PROVISION FSS u RTS 2 COR FOR F38j SRS 1 2 REDS Ver Y option DO STS 1 2 TB13 CB1 J RRS 2 4 PT 2 22 sp 2 WHT D 7 c13 TB H FRED lt 47 D e3 3 C J BK WHT RED gt x R1 52 T3 460 3 60 ARTWORK 89NT35 1188 _ REV Revised 8 6 93 Figure 5 44 Electrical Wir
40. 294 194 124 11994 124 1 2 1 DESPITE 1143 2133 GRD DA 01 2239 1394 vaSA4 1 MA 11494 999090 9999 OVVVO 500009 99 p 8d9 2 1999 590090 900066 133 FCXuL 2243 Cus GO redi XM 4 1 Onal a ryld FROM CIB CIA3 FROM 22 EMG CPG PROVISION FOR OPTION CIA REF RING TERM END CIAS 142 CJ CJ CJ Do F34 He 0 F3B TB14 TB PROVISION FOR OPTION eb m x b N 0 H ud Uu 460 3 60 W IHR CB2 gt aye RED 6RD WIRES 2 2 2 NO OF NO OF TURNS 1 1 1 BK
41. T wo 1 1 WHT YEL PRI 2888 WHT BLU YELTS A TEMPERATURE CONTROLLER WHT RED lt B BLU B WHT C ANNUNCI ATOR 5828 BRN LOGIC BOARD ABCD RED lt _D PF 8 ABCD VIK A AAAA PPI PNKK B PR2 e235 WHT 858 e DIGITAL DISPLAY SPARES FRON RED TANK C P6 0 6 D ORG m ILCH BRNZ TB17 9 RED UVT YEL um 1 0 BOARD U TB3 R TB4 BR 2 T yw RTS 2941 B lt al GHE c11 cB21 Us sy WHT KX PE9 12 C12 CB22 cH C13 CB23 Paw m erc 92 Potra 71 E lt F6 CPB9 2 3 HL PD17 0 4 pn N 22 20 50 5 SHLD L BRD o 8 2 gt OGOL 5 lt 16 20 04 9 6
42. 2 1 2 2 Starting and Stopping Instructions 2 1 2 3 After Starting Inspection seer Tert penta ket Re Rx 2 1 2 4 Unit Operation ERE UE 2 2 2 4 1 Cooling Controller Set Below 10 C 14 F 2 2 2 4 2 Controller Set Above 10 14 F 2 2 2 4 3 Defrost eee Ces Sete pese eR UR ie qe d 2 5 3 TROUBLESHOOTING 3 1 3 1 Unit Will Not Start or Starts Then Stops 3 1 3 2 Unit Runs But Has Insufficient Cooling 3 1 3 3 Unit Operates Long or Continuously In Cooling 3 1 3 4 Unit Will Not Heat or Has Insufficient Heating 3 2 3 5 Unit Will Not Terminate Heating 3 2 3 6 Unit Will Not Defrost Properly 3 2 3 4 Abnormal Pressures Cooling 3 3 3 8 Abnormal Noise or Vibrations 3 3 3 9 Temperature Controller Malfunction 3 3 3 10 No Evaporator Air Flow or Restricted Air Flow 3 3 3 11 Expansion Valve cee eee eens 3 4 3 12 Water Cooled Condens
43. 0 G J K M N 0 0 R 10 4 S0 CABLE ys PONER PLUG 460V m A RI lt so 32 lt T 22 a R mu lt G F1 230V T 8 1 4 e 230 3 60 Y Xs 18079 50 R vg c2 lei 1 6 N Ja lga 4 8 4 80 TF4 CABLE 12VAC 037 04 6VAC e DA 5 st NEN 5 81 2 i F6 S AP G AP T 2 TBS 7 c TB2 n 2i 02 15020 ci Uc2 RM az 17 op 1 cov o lt LN ma ILC Kem 12 TN 828 PD13 TB3 IP EM P1 P2 2 PI 06 1 Ts HTT TH SY 09 1 POTO 88V PD17 PD8 A RM PES 2 pe RY gt TEM 1821 2 01 o6 x z USDA BATTERY 1 Te20 9 5 1 ANP FSS 112 314 516 718 9 001121504016161715 6 7 8 1 12 13 14 15 16 24 CONTROLLER roe PH 1 0 BOARD i LOGIC BOARD zx t ek 9 T1 s 55 4 PG 1 2131415 16 1718 13 19 8 24 1 22 2 1313 1815 23 e 014 sssi 2314 R Te q TT 14 T xj COMMUNICATIONS c r I INTERFACE DISPLAY ASSEMBLY pei ER NODULE PF 141 5 ANNUNCIATOR 3 ABCDE 4
44. 5 133 3SA lt lt gt S x 8 1434 ENSA exo pa p A vba 1133 Bee yg 88 BPE uis 2 5 gt g lt gt gt AAA 50628 G Bu 4 u lt A 22 8 T e Io EE QS Rand Bens 5 a Luogo 4 21045 m DIE S 23 pp LOSA M Wr V x mE ET I cis DC lt Mee E KS psy o 6 Ol Ls Kiisa pE TES 6 9 Roza DX S CY x 10 o 85 25 Pe 6 Cs fa WIRES 4 2 2 2 NO OF OF TURNS 2 1 1 1 VSF3 621 Gez TB8 FERRITE CORES WIRES RRS RTS SRS STS 4 6 T82 502 Sheet 1 of 2 5 104 230 3 60 Figure 5 52 Electrical Wiring Diagram Models 69NT40 444 20 444 22 444 23 amp 69NT40 441 22 23 25 ARTWORK 69NT35 1038 REV B Revised 8 6 93 N B lt
45. BLK 1 gt BLK SPARE AUTO TRANSFORMER SHLD ae y 7 7 BRD P022 PD4 H1 6 04 07 2 07 pr 8 nsu 0100 0109 PT7 120 T82 wn 5 0 130 17 me 6 0 14H EMP1 014 0150 4 2 PD9 H1 160 ceio 170 0 180 RMD 12 0 190 5 4 0200 5 07 021 D RMC 2941 4 3 48 5 CPSS BLK RTS AMBS RED CSAS RED TB13 26 DO ss ODO e lt lt ay oy oss aux AMBS BL 3 CPSS RED Y Ry ub D RFI SUPPRESSOR 49020 LOCATING TAB ON BOTTOM KEYWAY SIDE N TB4 D 26 BB Lol t Sal 2 5 z n SB 4 79 amp KEYWAY SIDES ST 181 PLATE B9NT20 3003 ARTWORK 69NT20 3384 REV B Figure 5 14 Electrical Wiring Diagram Model 69NT20 274 1 Sheet 2 of 2 5 29 0 Q8 Q9 L4 L9
46. gt lt o 22 1138 al 185 A 8 58 B coz Tema a 16 an x NN _ lt oa B a 5255 388 tee oor a a olz 5 i ARTWORK ood REV 7 Figure 5 28 Electrical Wiring Diagram Model 69NT40 444 12 Sheet 2 of 2 ZONE SYMBOL DESCRIPTIO J18 AMBS AMB SENSOR L7 N2 COMPRESSOR CONTACTOR D2 CB1 CIRCU BREAKER 460V L8 CDV CAP ARY DE SUPERHEATER VALVE R22 OPT ND L9 CONDENSER FAN C
47. 1280 1 i zou m 51381 GX 4 i zosay gei gooodo w Nzasa it eni 5 5 115 xt ker S I 2153 L3 mm m UD C C 11534 _ amp Hmm 888 2 4 orga m 1043 05 1989 2 Lb 33 No rat Nee o P 4 Loeb lt oo eb 133 eco DX 8 5 8 L yu HENS 1 11334 BER 8 amp ALHg EX 25598 S ola 5 ms P ax 12943 5 A od 1066 cup 9 55 204 i zz N OE Sb Glue J Sin BPCO 5 9 2224 9 5 TOM Reo D eio i REA 2882 22801 n lt teneo 12804 Ki Nd 4 5 U i5 g oS 59 v lt Q 5 gt 5 SF N wr lt Woo xoa 5 24 Figure 5 12 Electrical Wiring Diagram Model 69NT20 274 Sheet 1 of
48. gt H tre CMG EMG X CIA3 FROM CIA 6 tho Won PROVISION ERE 2 amp 8 T FERRITE CORES CIAS FOR OPTION ba KREF RING LU J R NO OF NO OF TERM END CIB3 PH WIRES TURNS WIRES FROM FT PROVISION RTS 1 2 FOR OPTION CQ tatu 17 4 SRS 1 2 BLK Nomi DG LES oE 575 1 2 7813 TRHI X PRIZPR2 2 9 c2 2 sPaRE PR3 2 4 j eno 1 LF amp T r2 USDA THRU CABLE 3 13 RED ome 23 1 spare a C 4 BLK RM BLU S O vov v 2 52 450 3 50 ARTWORK B53NT35 8764 REV Figure 5 22 Electrical Wiring Diagram Model 69NT40 444 11 Sheet 1 of 2 5 44
49. d PR2 PRI Hes DCBA DCB OG TB21 o MDS DEFROST SIGNAL 20 70 pers L USDA BATTERY MODULE 1 2 2 TY og 1 1155 2 777 V rm ptt 3 5 _ L T 12 3141518 11213 15 s olo pap p 4 seo 2234 2 CONTROLLER 3 2 11 4 5 6 1 0 LOGIC BOARD 311 215 7 6 3 4 8 pa PG 12 3141516 9 171129 7 21138 224 i 2212 3 6 5156112 314 R iT PS _ COMMUNICATIONS 4 ARK INTERFACE DISPLAY ASSEMBLY rac MODULE H 4 rl gt 4 pA AA 1 LE i yj 2 ANNUNC I ATOR X Ppa 3 AS ene Ata TCR ICF Q m m lt 5 t 5 ARS CTE D 6 L 1 12 345 1213 n ARTWORK N 89NT35 8984 REV Figure 5 27 Electrical Wiring Schematic Model 69NT40 444 12 Sheet 2 of 2 5 55 10 11 12 13 14 15 16 17 18 19 lt B Ke 21 EF22 521 ES22 J TB3 I EMP2 ll EM1 GRD 2 EMG I EF22 I EF23 522 523 4 H TB14 4 EMP2
50. lt m 4 m TACTOR MINATION THERMOSTAT FAN MOTOR FAN CONTACTOR CLOW SPEED MPS RE SWITCH INATION THERMOSTAT TOR CONNECTOR CONNECTOR R22 OPTION PROTECTOR LIGHT ROST SWITCH RANSFORMER OunounununaDAaAaAD TORING RECEPTACL RDER SENSOR ERATURE SENSOR ULATING VALVE R E S 5 5 010 VALV WITCH 2 PERATURE SENSOR CK CONNECTION ELAY CCOOLING ELAY CIN RANGE2 ELAY CHEATING 0 R RELAY CEVAPORATOR FAND R R R ELAY CCONDENSER FAND lt CAUTO 230 460 URE SWITCH 5 82 E SUPERHEATER VALVE R22 OPTION FAN CONTACTOR EAD THERMOSTAT R22 OPTION FAN CONTACTOR CHIGH SPEED RELAY CSUCTION SOLENOID VALVE UNLOADER SOLENOID CR22 OPTION UNLOADER SOLENOID THERMOSTAT R22 OPTION Figure 5 41 Electrical Wiring Schematic Model 69NT40 444 17 Sheet 1 of 2
51. 4 8 4 11 Checking or Replacing High Pressure Switch 4 9 4 11 1 Replacing High Pressure Switch 4 9 4 11 2 Checking High Pressure 5 4 9 4 12 Servicing Quench Solenoid Valve QV 4 9 4 13 Replacing the Evaporator Coil and Heater Assembly 4 9 4 14 Replacing the Evaporator Fan and Motor Assembly 4 10 4 15 Servicing the Evaporator Coil Heaters 4 10 AVG Condenser Coil dee M he Men e RE RD ace wanda hen EN RUN ote s 4 10 4 17 Condenser Fan and Motor Assembly 4 10 4 18 Recording Thermometer Partlow 4 11 4 19 Recording Thermometer 4 12 4 20 Rust Prevention and Maintenance of Painted Surfaces 4 13 4 21 Servicing the Water Cooled Condenser 4 13 4 22 Checkout Procedure for Optional Power Transformer 4 15 4 23 Temperature Controller and Recorder Sensor Checkout Procedure 4 15 4 23 1 Replacing Temperature 4 15 4 24 Servicing Suction Solenoid Valve 69NT40 4 16 4 25 Servicing the Modulati
52. Oo Oe n 7 WE m AN T ind eS zo RO 9 m gt 69 69 Nozad X ope 1194 as 5 lt Gl m N oe vu gt gt I T iq a 5 G 5 58 E E N 69 N l l a ze 25 ie u m S ApH 2 o Ne od Fer 8014 REVA ARTWORK 69NT35 Figure 5 6 Electrical Wiring Diagram Model 69NT40 444 3 Sheet 1 of 2 5 12 TEMPERATURE CONTROLLER
53. R R W gt Dm gt lt 230 3 0 di gt FERRITE CORES WIRES RTS SRS 515 RRS YY T 3 4 TRANS AUTO ARTWORK REV 69NT35 8494 Figure 5 26 Electrical Wiring Diagram Model 69NT40 444 7 amp 444 8 Sheet 1 of 2 5 52 sd DHBL TEMPERATURE CONTROLLER ANNUNCIATOR LOG TEABOARD m 290 HR23 ONR PF DPH DIGITAL DISPLAY 6 5 9 n i 200 9 845 OOk ms Al JJ J T817 EDA UVT PG d BLK 1 0 BOARD Cuff t 1B3 R TB4 BR T i RTS 2a J 41 GHE 5 C11 VSA4 5
54. 11 TB17 RED UV1 7 BLE 1 0 BOARD n TB4 e BR 2 1 7 85 15 250 4 4 3 3 lt 8 5 11 21 5 C12 CB22 5 fens C13 CB23 da v m 4 varas lt lt uj gt 0 S c LLLI LLLI st2 21 F6 POT eo F6 2 WP SB HTT 1 C 4 DTT sHLp 4 Kl 052 3 PD22 Da S a HPS N NSHLD AN 16 69 24 PD4 a 6 o DTT 2 0 7 04 5 a Ho 8 HPS E p x K 29 2 p 900 qm PD21 a 9 av D She 0 lt 0100 4 Ssv CIBi 4 2 zJ PD23 rerieducss m PD3 TRX2 VIO _ 281 2H 1 17 H Tan BLK A 2 PNK 4 c L 22 nj 91 40 1 E 7 ORN A S orn 14 0150 2 A PM GRY PDS a168 2 HTT ILC uyt BLU 7 S RED UVT or AP 9175 lt 1 180 3 KEYWAY PE18 401 5 CHT e SIDE N PE10 a208 SMV MDS 0210 24 lt I gt T T KEYWAY 1 SIDEN 5
55. 7 TES mE mno WHIAYEL 21556 DHBL WHI BLU f 7 TEMPERATURE CONTROLLER u HR22 7098 WHT RED BLK B orm BLU DHTL WIRES ANNUNCIATOR SES BRN COGIC BOARD DHBR ICR RED K D PF N DHTR AB CD VIO K 3 2 GRN HR23 AB SO PRA 527255 AAN a CRY C DIGITAL DISPLAY Seance 6 3 H amp TBS aioe TANK lt HCS L oRG K D SBA HsxieL0 TB11 1817 s Te 1 0 BOARD n NTB3 e R 1B4 BR 2 1 RTS 2 1 odere risen Mes ees orn gt 4 4 3 3 5 5 11 21 5 12 22 mE C13 CB23 MM vow um d gc s S Og uj gt 7 as e LLLI tot 21 0 3 V 2 19 63 8 HTT 3 K 1 C PD17 i 4 01 ID 187 Pas HPs bsc Ea Gla a PD4 06 0 DTT BRD pp2 o70 7TBS a Ha 8 HPS 4 L E m ra Pe 8 1 CY nun Sunn 5 m Sec o one one g pps 51 1 55 4 2 J 21 9 23 511 8 A D PD3 TRX2 VIO
56. 88 Re gt a m sr2 _ 4l S pu T HFa S V Q 5 91905 HTT 3 Api F 000899 5 _ 5 SHLD ANIAN 8 16 20 24 4 0 6 02 5 7 O 4 785 a x Le j HPs m f a Cup 8 CIH CPBB8 g oe 5 PD21 9 01 07 VV abt 2 0100 9 4 023 911 Dy Hes3 Pr A PD3 3 D0 120 14 TRX2 as 2 HETAN BLK 7 2 5 0 130 P C17 2 2 3 6 0140 nw Q ORN 4 6 ORN 14 015014 2 GRY 9 0160 4 BLU O Q LEJT REO 0 170 PE12 0 18E BLK 18 0 190 5 SIDE 3 10 0200 5 MDS nain p DF SIGNAL je P024 lt 1 gt KEYWAY 1 SIDE Eg TET E OT AAA n n D 1 lt i 9 H 85 58 88 582 45 123 ORN ES RB PRE D 2 8 BLU Lo 99 bo 6 BATTERY a d 5 2 24 201 34 28 22 z e fs MODULE 5 P SOPE A G E da BATTERY ge 68 B 08227 tar E RED 7 CB23 B9NT35 7714 REV A ARTWORK Figure 5 2 Electrical Wiring Diagram Models 69NT40 444
57. D E F G H J K L M N 10 4 50 vs POWER RECEPTACLE Bae p 1 tr T aru a 45073 50 25 13 3 380 3 50 SE gt 111 21 P lt 6 B2 777 12 122 m cp 8 4 50 5 POWER PLUG PARE TRANS CAUTO 131 55 T 8 230V 1 4 iR A 80 ry A21 BAY H3Q n a 23073 50 e zu COR 190 3 50 Em SS P EERE Tra 221 5 r9 X ooo 4 j 24VAC 15253 TB13 lear CR amp lt 55 5 TB BE ct AND o te 1 AMP 2 1 3 5 j IP TRANS E IP CP 5 tes AUTO 123 4 8 5 TE2 85 p 2 020 m w TB17 o ul AY EF lt a 117 21 1 12 CHT 2 CDV 521 4 OS OE d a 721 22 2 nh 12 22 12 IP CM T815 TN c poral IPD13 2 131 123 183 IP EM IP EM TBI4 4 11 Pi 2 2 80 Pos IPD18 m 9 2 2 12 TV EF ES 3 N Q 1 3n HTT 7816 TH HR Pog 1 019 61 62 TG TRE av TG PD171 21 10 55 TI THIB um X em PES IpE12 nia pe 4 MDS cS QUI 20 94 as s BATTERY MODULE T rh 8 x ET FMV 3 3 X 5 5 pu PL 2314117
58. Pole Folt lee _ 5 2 TB OGGI CRAZ lt 12012707812 mi 99009 GRD GRD PC 17 0 4 DIT MDS2 SHLD Do5 HPS SHLD p 5 Hale ale PD4 O 6 H DTT BRD US 6 PD2 7 CH TBS 2 fe 5 LL H k amp Cpp16 P08 n g eee gee PD21 0 9 cH av TRED une d 2 23 1 10 4 HCs3 PT gt PD3 BER cup 1 LU 20 2 PTS L m 30 17 BLK 3 Hex P mm 40 EMP 1 M m o Suse 4 0150 2 lt pps toi eo HTT ILC BLU Q e RED Uv e KONET 76 S PA 12 RMD IE Yom PE1 8 01 90 2 8M v SIDE 0 1200 5 CDN PD7 1 U210 RMC LOCATING TAB ON BOTTOM 02444 lt 3 SIDE D lt vg ERR gt gt 5 11 Y NO 24 ST ow 28 wo oo 12131451263 TLGRD F BH 0RN Fo BB 26 D T6 EL OG 4 I4 I4 I so 9 6 65 T8 gt 24 25 23 gt z gt 2 22 19 74 Fo 19 7 19 Le La LS 51 5 8 PLATE OPTIONAL amp 9NT20 3193 ARTWORK amp 9NT35 9274 REV
59. C D E F G H J K L M Q R 6 10 4 50 POWER PLUG 1 460V HE lt BK 134 4603 60 52 380 3 50 33 R lt 4 rh vs 21 POWER PLUG CB2 2307 55 UN 23 230 3 60 lt W OR 190 3 50 lt r la Laps mm 1 vil 92 2 12 CABLE PT lt E amp a 5 lt 8 55 5 m 12VAC 5 1 q 5 ST Kes asss Yi AAA x 1 o o 24 2 1 5 AMP EF 182 IP CP HPS 185 7 ic mir Sos eL 2020 ciLic2 RM RM s 1222 TB12 TN 1815 fi Pl c P2 0141 IpD13 T83 7814 P1 P2 P2 Pi 2 27 HIT c2 A PD21 13 SSV 18 RM Peg pe 4 OTT 7821 ux QUSS o 6 1820 y 7819 1 2 3 4 s Ie 7 9 11 12 13 14 16 18 17 15 112 314 15 eT 6 9 16 11 12 13 1415 2212324 CONTROLLER 170 BOARD LOGIC BOARD au 8 1 2 5 7 6 3 4 8 B PA 2 2 4 PG 12131 41515 71819 7 2119 24 1 22 2 13 18 5 23 9 5 5 1 2 3 4 R ICT T 17 COMMUNICATIONS 47 1 INTERFACE DISPLAY ASSEMBLY MODULE PF 4 gt 3 CI A 4 m o v o 5
60. Figure 5 32 Electrical Wiring Diagram Model 69NT20 274 2 Sheet 2 of 2 5 65 ZONE SYMBOL DESCRIPTION J18 AMBS AMBIENT SENSOR L7 N2 C COMPRESSOR CONTACTOR D2 CBI CIRCUIT BREAKER 460V 18 CDV CAPILLARY DE SUPERHEATER VALVE R22 OPTION L8 N6 CF CONDENSER FAN CONTACTOR J8 CHT CYLINDER HEAD THERMOSTAT R22 OPTION N18 CI COMMUNICATIONS INTERFACE MODULE 68 Q6 CM CONDENSER FAN MOTOR D7 Q3 COMPRESSOR MOTOR 118 CPDS COMPRESSOR DISCHARGE SENSOR 118 CPSS COMPRESSOR SUCTION SENSOR J18 CSAS CONDENSER SATURATION SENSOR J2 CT CURRENT TRANSFORMER Q5 DHBL DEFROST HEATER BOTTOM LEFT PS DHBR DEFROST HEATER BOTTOM RIGHT P5 DHTL DEFROST HEATER TOP LEFT 05 DHTR DEFROST HEATER TOP RIGHT N5 DPH DRAIN PAN HEATER C12 DTT DEFROST TERMINATION THERMOSTAT K9 18 N7 EF EVAPORATOR FAN CONTACTOR HIGH SPEED 08 F8 Q8 Q9 EVAPORATOR FAN MOTOR L9 07 5 EVAPORATOR FAN CONTACTOR LOW SPEED A5 BB C14 F FUSE C5 FT FUSE TRANSFRESH FLA FULL LOAD AMPS J11 HCS HUMIDITY CONTROL SWITCH F HPS HIGH PRESSURE SWITCH L10 N4 HR HEATER CONTACTOR 010 HTT HEAT TERMINATION THERMOSTAT 018 18 1 NTERROGATOR CONNECTOR 7 ILC NLINE CONNECTOR R 22 OPTION C7 C8 F8 68 NTERNAL PROTECTOR E12 MDS ANUAL DEFROST SWITCH L17 PP PROBE PLUG RTN L17 011 P11 PR
61. LOGIC BOARD r 1 2 5 7 4 PG 2 3215161 8131 471297 2233195 shohi s 5 6 j 2314 R Ll LES BJ HT COMMUNICATIONS INTERFACE DISPLAY ASSEMBLY 1 ABCD MODULE PF C 1 T 14 PP3 2 X 3 et ajal ICR IC lt E a D B n 9 lt RRS 1 2 3 4 5 1 2 7 FOR REORDERING SPECIFY ARTWORK PLATE N 6SNT35 1298 REV 59 35 2437 P N 69 20 373 1 40 Figure 5 53 Electrical Wiring Schematic Model 69NT40 441 24 Sheet 2 of 2 5 107 Revised 8 6 93 15 18 19 zB C EF21 22 4 ES21 622 2 GRD We 3 Il e G EM1 EMG 22 2 ES22 1 ES23 2 1 4 1 6053 OuH ELSA LNH 2153 4 21 11534 LLYHS 0008 999 LLWA LLWSTT 9 41 1253 1282 11 1733 1233 lt gt lt gt
62. NO OF NO OF TURNS WIRES 3FERRITE CORES WIRES RTS SRS 575 RRS 5 64 Figure 5 32 Electrical Wiring Diagram Model 69NT20 274 2 Sheet 1 of 2 REV A ARTWORK 69 35 9264 N TEMPERATURE CONTROLLER R2 DHBL 2 S TBS ANNUNCIATO LOGIC BOARD DHBR HCS PF 990 HR23 8 11 DIGITAL DISPLAY 5 5 9 11 PG 9 360 r ILC1 e BRN PK RRS Al x 1B17 RED UVT 7 BLK 0 BOARD T83 9 R TB4 e8R Cus aes eer Leonor DG lt GHE 6 5 C11 CB21 e s EN PB C12 CB22 12 VS TN 23 ee gud anto
63. Ti 21 22 1 9275 T2 722 J 122 ss T3 lt 13 23 CJ Tal 23 1 4 HR Fh PT H1 ja 460 3 60 H3Q OH2 111121 380 3 50 2 12 22 5 7 L 24VAC 13 23 2 Md uan TB13 iot Qt ST CF 1 5 TB MP 077 3 5 111121 5 13 23 4 TBS HPS TBS yj B2 o H 89 588 PD2 2020 ww 3 11 e Y gt EF 1151 1 12 CHT 2 4 O OFS EN 121 122 2 Ui n 121122 TB12 IP CM TB15 TN CF oo 13 23 2 T UE IPD13 C1 c2 23 pr 183 IP EM 14 2 12 P2 P2 21 PDe PDi8 31 41 EF ES N ni 1 41 1 2 HTT TH HR TB3 TB16 1 ub E QV PDSIIPD1O C1LIc2 PD21 Ne m TBA DTT TBS 821 MDS DEFROST SIGNAL OF SMV Y 77 1 21 3 4 5 6 7 81 4 10 11 112 13 1 416181715 PD 1 2 3 4 5 5 7 8 S9 10 11 12 13 1 4 15 16 17 18 19 20 21 22 23 24 S CONTROLLER PH PM s 2 1 4 S 6 R 140 BOARD PH LOGIC BOARD 9 1 2 517 si 4 s PA PB A PG 2131415151218191 171129 7 24 1 222 1313 8 5 3 holi 416 5 5612314 R ERS 57 TT tse COMMUNICATIONS ET INTERFACE DISPLAY ASSEMBLY 44 F MODULE PF 4 1 2 X 3 x ANNUNCIATOR I
64. eu cml pres oro lt YISA asthe 10233 0 Catena 1 s 8 s 1249 T eu C9 Cor tino ZHUL e X o M jan ie lt SERES 5503 lt 222 Yr 5 Co 122 va exe OO Bor 22 2T eva gt 12805 F vsc G gt o 2 Pa 460 3 60 7813 N ren 01910101010 VS 789 Cs M vse Se VSF3 fa 4 VsH2 VSD2 5 WIRES NO OF NO OF TURNS FERRITE CORES WIRES RRS RTS SRS STS 230 3 60 ARTWORK 69NT35 8704 REF 5 48 Figure 5 24 Electrical Wiring Diagram Model 69NT40 444 10 Sheet 1 of 2
65. CIB3 BLU PE17 TB2 o 38 x Do FSA H O a 1 Sparel a F38 TB1 BLK 11 13 T BRN CLA 23 TRH41 Pay CDV FERRITE CORES NO OF NO OF TURNS WIRES 2 THRU CABLE WIRES RTS SRS STS PR1 PR2 PR3 USDA N YEL GR an PP PU BLK Pa 460 3 60 REV B ARTWORK 69NT35 9714 Figure 5 46 Electrical Wiring Diagram Model 69NT40 444 18 Sheet 1 of 2 5 92 Revised 8 6 93
66. DRAIN HEATER C12 DEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR HIGH SPEED D8 F8 EVAPORATOR FAN MOTOR K8 L9 07 ES EVAPORATOR FAN CONTACTOR CLOW SPEED AS B6 C14 USE CS USE RANSFRESH FLA FUI OAD AMPS 1 CS UMIDITY CONTROL SWITCH i PS IGH PRESSURE SWITCH 4 R EATER CONTACTOR D10 HERMOSTAT 018 18 INTERROGATOR CONNECTOR 7K ILC INLINE CONNECTOR CR 22 OPTION C7 C8 F8 G8 IP INTERNAL PROTECTOR E12 MDS MANUAL DEFROST SWITCH 117 PROBE PLUG L17 011 P11 PROBE RECEPTACLE USDA G4 POTENTIAL TRANSFORMER B16 G616 R RIBBON CABLE K19 RRS RETURN RECORDER SENSOR G18 RTS RETURN TEMPERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE 8 SRS SUPPLY RECORDER SENSOR SSV SUCTION SOLENOID VALVE ST START STOP SWITCH 8 STS SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTIO J7 TC CONTROLLER RELAY COOLING J4 TCC TRANSFRESH COMMUNICATION CONNECTOR CONTROLLER RELAY CHIGH SPEED EVAP 2 K4 FC TRANSFRESH CONTROLLER 110 T CONTROLLER RELAY CHEATING I8 T CONTROLLER RELAY CONDENSER I4 TRANSFORME LS TRC1 TRANSFRESH REAR CONNECTOR ES TRC2 TRANSFRESH REAR CONNECTOR E11 TS CONTROLLER RELAY CSUCTION SOLENOID VALVE 19 CONTROLLER RELAY CLOW SPEED EVAP L7 UV COMPRESSOR
67. TERMINA BLOCK CO E ION J7 CONTRO R RELAY COOLING J8 CONTRO R RELAY HIGH SPEED gt 110 TH RO R ING2 18 T R RELAY CONDENSER FAND TQ CO RO R AY QUENCH I4 TRANSFORMER E11 TS 60 RO R RELAYCSUCTION SOLENOID VALVE 19 CO R RELAY CLOW SPEED EVAP LZ UV COMPRESSOR UNLOADER SOLENOID R22 OPTION J7 UVT COMPRESSOR U OADER SOLENOID THERMOSTAT CR22 OPTION E WP WATER PRESSURE SWITCH Figure 5 27 Electrical Wiring Schematic Model 69NT40 444 12 Sheet 1 of 2 5 54
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71. 12 3145 11213 17 I A UJ ARTWORK 69 35 7864 REV D Figure 5 7 Electrical Wiring Schematic Model 69NT40 444 4 Sheet 2 of 2 5 15 10 11 12 18 14 15 16 17 18 19 5134 1 i 4 A 55 3 POS D he Bg d5A x 5 E31 5 L m 2 TES lt 2 qni i PRETERE L N T C 4 lt RXTE ye E OLOA x 1858 m XT S gt lt oM z ie 2 Re His gt Xt a 1249 4 amp velas 8 L E m SIL 22804 gt ZIW O 7 Pa LSO M o
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73. Electrical Wiring Diagram Model 69NT40 444 1 Electrical Wiring Schematic Model 6 9NT40 444 3 iili Electrical Wiring Diagram Model 69NT40 444 3 Electrical Wiring Schematic Model 6 9 40 444 4 Electrical Wiring Diagram Model 69NT40 444 4 Electrical Wiring Schematic Electrical Wiring Schematic Model 69 Electrical Wiring Diagram Model 69NT40 Model 69 Electrical Wiring Diagram Model 69NT20 274 Electrical Wiring Schematic Model 6 ONT 20 0741 PERI aq anata Electrical Wiring Diagram Model 69NT20 274 1 1 3 1 4 1 5 1 6 1 11 1 12 1 13 1 25 1 27 1 26 2 3 2 5 4 1 4 3 4 4 4 4 4 5 4 5 4 6 4 6 4 7 4 7 4 9 4 10 4 11 4 13 4 14 4 15 4 15 4 16 4 16 4 17 4 18 4 19 4 21 5 2 5 4 5 6 5 8 5 10 5 12 5 14 5 16 5 18 5 20 5 22 5 24 5 26 5 28 Figure LIST OF ILLUSTRATIONS CONTINUED 5 15 Electrical Wiring Schematic Model 69 740 444 6 5 16 5 17 Electrical Wiring Diagram Model 69NT40 444 6 Electrical Wiring Schematic Model 69 40 454 1 5 18 Electrical Wiring Diagram Model 69NT40 454 1 5 19 Electrical Wiring Schematic Model 6
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78. S 1 _ 2131415 23 Ea ARTWORK PLATE 69 735 1028 REV 69NT35 2147 FOR REORDERING SPECIFY CTD P N 69NT20 373 135 Figure 5 51 Electrical Wiring Schematic Models 69NT40 444 20 444 22 444 23 amp 69NT40 441 22 23 25 Sheet 2 of 2 5 103 Revised 8 6 93 11 13 14 15 16 17 18 19 CU 21 vsi 460 3 60 CF21 2 E 5138 E 2 N Zina 523 L A ul i my Core osd EE EMIS BEI EI EI Ele m n B 4 A DO C4 iv m g N zaa H Y 625 m LINI L AKT tt EN Na 9222 G em eod u 15 222 0 Co C P 299
79. zB C EF21 EF22 521 22 2 GRD 3 Il e G 1 EMG EF22 EF23 ES22 4 ES23 EMP2 1 r TB14 o e EMG COS 4 COWH ELSA 2153 C lWH LLS3 LLYHS 20000 0 99 r 143 t LLWI l 41 f CLWSTT 9 IFS3 __ 2933 ASS d _ 2343 El4J37 2143 4 133 62 1 93 1132 4 E 1024 1253 9 1233 lt gt lt gt 8 COUH 293 E L H ELIA l L H LLO LHO ELWa vlW3 viwWa lt CO 1153 I ci3d3 4 133 4 FIN0 DE I Xu1 I 933 LLWO CF23 12 7815 GRD 2349 ETHOS 1329 1 cCCHO Ke LYH 12994 142 4 2 181 1 6006 0 6 999 O zgdo Lado CMG EMG CPG 5 Lego 1 4 1 2283
80. 2 781 RM ES 3 11 BS VUA nl 1 12 TB12 7815 TN 3 P1 B2 PD14 Ipp13 cerca Tal 22 B TES 814 EF 121 122 Pip P2 P2 18 31 1 CiLIc2 13 123 131 23 ES 4 11 IPD1 m m c 2 2 12 TH m 7815 3 SET Pog 010 ciUc2 1 Qv PD17 021 T SSV 7818 RM 12 D DIT 7821 RM m lt 07 MDS 2 1 0 6 BATTERY MODULE PN g 2 218 gt 777 pate JE 5 X F3C Bus PLUS re 1 2 3 4 5 6 7 rori ia ro 1 ne 16 v7 15 po 1 2 3 4 5 8 2 e 4 15 16 17 16 19 20 21 22 23 24 9 CONTROLLER PH zi PMIST2T1T4TSTS n 1 0 BOARD r LOGIC BOARD 1257 B PA PBe 2 4 PG 1 2 3 4 5 5 7 4 1 11 20 7 21 13 8 24 1 22 2 13 18 5 23 9 10 14 16 5 5 5 1 2 3 4 R I T rT COMMUNICATIONS PG 4 5 INTERFACE DISPLAY ASSEMBLY MODULE m 1 2 XA 1 e E 4 PE Bons 8 2 RRS 5 4 6 D B 5 N 4 1TaTs a s 112 31 17 1 d ARTWORK N 5 8004 REV Figure 5 5 Electrical Wiring Schematic Model 69NT40 444 3 Sheet 2 of 2
81. LAGU PP3 PR2 DIGITAL DISPLAY SPARES FROM 5 5 OQ ak GRY BEUS A PG Pals lt BRNIK ORG SHIELDA TANK RNT lt C PK ORGAK D us YEL I 0 BOARD f RRS TBg3 e R B4 e BR Y 2 1 AIS En i De 4 y 3 B lt 4 3 5 5 11 5 4 6 gt lt 5 12 584 C13 VSC4 y y a MGE RE 56885 52852 812 478 d 4l pe 2 CPB9 i20 t9 6309 HTT 3 1 5 HPS 5 2 LN NIN 8 2 16 20 24 04 9 6 CHT PD2 7 01 785 A x HPS 567 a 1 a 20 8 _ _ 8 E Eon 5 PD21 H1 9 Hov NA T OTT 8 5 08 0 100 557 2182 2 0110 3 Mp Rx2 m cei 20120 2 94 vio 5 0130 17 zi 2 BLK O 2 GH a PD6 L 314C EMP1 T AN TH ORN s 2014 1915 cm2 PM pa 9 0 150 BLU 7 s RED CC1I 0170H PA PE12 0166 RMD KEYWAY PE18 C1190C SMV SIDEN 10 120 5 MDS 07 921 C RMC 1 TB4 D LOCATING TAB ON BOTTOM D24 C lt 4 SIDE 7 1 X B ER A
82. P2 4 1 CTLIC2 TB3 14 PI P2 P2 1 Pos 31 41 CTLIC2 131123 aus EF 2 TY N ES 2 12 5 54 1462 3 HTT TH HR gre 16 A al 1 vee TB av 61062 X PD21 Ts mm PD17 5 ELS us TI 9793 BMC qq Bn PES 2 vus D J A TB4 DTT TB21 ia ARM r4 pis MDS lt DL gt 29791 lt im USDA BATTERY MODULE L 7 42 2 92 h 1145 _ TB19 H3 LL 1 rm Lm 3 enn a bs C 1 2 3 4 5 6 8 1112131 4 1 6 1 8 1 7 1 5 PD 11 21 3 4 5 6 7 8 411011 121 13 14 15116 117 118119120 21 22 23 24 2 CONTROLLER PH 2 1 4 5 6 1 0 BOARD LOGIC BOARD px 21517 6 3 4 8 PA 1 2 3 4 5 6 7 8 9 4 17 11 20 7 211 93 8 24 1 22 2 13 3 18 5 23 9 1014166 PB s s5 1 2 3 4 R 413 57 TT t 1 COMMUNICATIONS DISPLAY ASSEMBLY JLE MODULE PF RANA 1 ANNUNCTATOR X i PRS 5 d uw tx ty tg Gl ug L ICR ICF 5 5 8 5 5 9 lt 883 1 2 3 4 5 2 123 Y FOR REORDERING SPECIFY ARTWORK PLATE Ci V 69 35 9294 REV 69NT35 1517 P N 6 20 373 120 Figure 5 35 Electr
83. SHLD Pray MDS2 Npp22 5 HPS 8 3 62 PD4 a 6 6 BRD PD2 n 2 n TBS a HPS p D 8 e a onn 900 N PD21 a 9 av Z ne dor 51 1 55 4 9 2 1 107 THCS3 a 22 TRX2 a _ 281 205 PTS 91 30 17 2 DE 7 2 Ops N N m 91 40 EMP1 7 ORN A 5 S ORN A 14 0150 CMP2 PM GRY a1 amp HTT ILC uyt BLU 7 S RED UNT PA 01 70 21 RMB UV lt lt 1 12 a180 RMD o1g0 smv cur lt lt SIDE n200 smv MDS PD 0210 Y 4 lt ell LOCATING TAB ON BOTTOM T 6p bL PD24 lt gt T TN KEYWAY SIDES N RED zoom ES e d gt d gt d d m XN 35 BLU 650 BER m ne mo PN USE ESC 2 3 e A EE USDA X 2821 ly gt MODULE lt o CI 22 __ 74 74 TG La BATTERY FBEE 15 0 Bos IR 22 J ov N N lt 525 52 965 PLATE aet eo amp 9NT35 1527 5
84. SIGNAL lis 12 244 4 gt lt D lt SIDE Y m n NY NYY NN P 46 99 ST L 5 N 4 X BLk 28 LN oa 56 1 TLGRD AEH 4 Fo DB 6 ZG cet D EI T 4 L4 ss s 98 agreer amp 55 38 2 2 5 5 d 15 815822 O O lt 5 4 2 a OPTIONAL x ARTWORK B9NT35 S084 REV 7 Figure 5 30 Electrical Wiring Diagram Model 69NT40 454 2 amp 454 3 Sheet 2 of 2 5 61
85. _ a gt SPARE AUTO TRANSFORMER gu E In ma x a mmn Po L 141 7 sr 8 TBT CPBS V OMA 0999 HTT 3 1 2 N poi7toakp ot pin 2l uns 052 c ERD gt 0 5 EF T HPS gt ND AN 8 16 20 24 PD4 0 6 6 Y 2 0 7 A EE HPS bas NA t LH w c o PD16 N m 2 pgr 2 osa 4 lt 5 pos ooot ssv gt 2 0110 K 2 o5 Domm we 5 1 1 BLK 3H 8 k 6 4CH EMP1 n oan sH A 09 0160 4 UV te BLU Q ema J 1 CHT 12 0180 2 EAN 2 18 0180 5 Ne SIDE A 0 0200 6 ILC MDS 7 4 21 1 lt 2 gt LOCATING TAB ON BOTTOM 18 4 lt gt lt 3 KEYWAY m SIDE NS J u SO 186580 57 4 af y 2 2 n grae N 1 mm mm d 9 LCF ORN FE A Ld io Im Io ee os 7 SH SI VSB1 E Te PLATE 69NT35 1657 ARTWORK B9NT35 9
86. c ST A 3 BLU T TIO BLK 14 PS 953 94 28 1 2 3 4 5 1 2 5 Ten D TB 0 6 99 99 99 OPTIONAL 27 80 g 39 24 zg 28 23 d B iie gt a 29 29 25 5 34 95 8 Bl Y881 USDA BATTERY PACK vsci ARTWORK 69NT35 7754 REV Figure 5 4 Electrical Wiring Diagram Model 69NT40 444 1 Sheet 2 of 2 5 9 1 LEGEND ZONE SYMBOL DESCRIPTION J18 AMBS AMBIENT SENSOR 814 BMS BATTERY MODULE SWITCH L7 N2 C COMPRESSOR CONTACTOR 01 CB CIRCUIT BREAKER 460 CB2 CIRCUIT BREAKER 230 L8 N6 CF CONDENSER CONTACTOR N18 COMMUNICATIONS INTERFACE MODULE G8 06 CM CONDENSER FAN MOTOR 07 03 COMPRESSOR MOTOR 118 CPDS COMPRESSOR DISCHARGE SENSOR 118 CPSS COMPRESSOR SUCTION SENSOR J18 CSAS CONDENSER SATURATION SENSOR J2 eT CURRENT TRANSFORMER QS DHBL DEFROST HEATER BOTTOM LEFT P5 DHBR DEFROST HEATER BOTTOM RIGHT PS DHTL DEFROST HEATER TOP LEFT 05 DHTR DEFROST HEATER TOP RIGHT NS DPH DRAIN PAN HEATER 12 DTT DEFROST TERMINATION THERMOSTAT K9 L8 N7 EF EVAPORATOR FAN HIGH SPEED 08 F8 08 09 EM K8 L9 07 ES EVAPORATOR FAN CONTACTOR LOW SPEED AS B6 C14 F FUSE FLA FULL LOAD AMPS HPS HIGH PRESSURE SWITCH
87. 1 Lad 35 1953 1753 2953 1563 L H 2153 ke L H 1153 lrt O 26 H T82 Beard Beard D Do HPE 74 D 238 30 99 K TBI OPTION CN 21 CFROM CIB PROVISION Qe 10334 05 He Laa S aes HaHa Isa iN m 2349 155 5155 133 ZLo Kitas BK WHT RED 13 RED QOO 460 3 60 L LW A gt gt gt ux que Q gt 2 143 gt ae Lexy mu t tn 555 coo Ke 12 LLO ry LW c134 4 1 e e EM2 CF21 CF23 GRD 12 15 94 2149 2280 Z L H 1282 18 12883 99 lt 1885 699099 s 90996 5 18 fe
88. 14 F The evaporator coil heaters are accessible by removing the front lower access panel The defrost termination switch DTT is located on the coil center tube sheet and may be serviced by removing the upper rear panel or by removing the left front upper access panel and reaching through the evaporator fan venturi AFTER POWER IS TURNED OFF AND POWER PLUG DISCONNECTED d Control Box The control box and door include the manual switches circuit breaker s relays transformers potential and control and fuses See Figure 1 4 1 3 REFRIGERATION SYSTEM DATA a Compressor Motor Assembly No of Cylinders 6 Model 06DR Weight Dry 260 lb 118 kg b Approved Compressor Oil Petroleum Specialties Inc Cryol 150 Witco Suniso 3GS Texaco Capella WF32 c Compressor Oil Charge 4 0 liters 8 5 U S Pints d Compressor Oil Sight Glass Oil level should be between 1 4 to 1 2 of sight glass with the compressor in operation e Defrost Timer Initiates Defrost Refer to section 1 13 4 Code 25 f Defrost Termination Thermostat Opens 23 9 3 C 75 5 F Closes 15 6 3 60 5 g Expansion Valve Superheat Setting at 0 C 32 F container box temperature 4 4 to 5 5 C 8 to 10 F h Heater Termination Thermostat Opens 54 3 130 5 Closes 38 3 C 100 5 F i High Pressure Switch 28 or 37 CFM Compressor Cutout 21 0 7 kg cm 2
89. 3 gpm or when water cooled operation is not in use the CFS switch must be set to position 1 or the unit will not operate properly To shift to air cooled condenser operation do the following Turn the unit off and set the CFS switch to position 1 Disconnect the water supply and the discharge line to the water cooled condenser The unit should now perform as outlined in section 2 4 1 10 REMOTE MONITORING OPTIONAL NOTE Models with an in range light the light will be illuminated if the container return temperature is within the tolerance selected Refer to section 1 13 4 Code 29 1 10 1 Remote Monitoring Plug When the remote monitor is connected to the remote monitoring plug the following remote circuits are energized Circuit Function Sockets RMT3 to 1 Energizes remote in range light 1 10 2 Remote Monitoring Receptacle When the remote monitor is connected to the remote monitoring receptacle the following remote circuits are energized Circuit Function Sockets B to A Energizes remote cool light Sockets C to A Energizes remote defrost light Sockets D to A Energizes remote in range light 111 SUCTION SOLENOID VALVE Model 69NT40 The suction solenoid valve shown in Figure 1 3 is controlled by the controller relay TS a Operation If set point is below 10 14 F and the suction solenoid valve override is not activated controller relay TS closes to energize th
90. Condenser Fan Motor Alarm 24 is triggered by the opening of the condenser motor internal protector and will disable all control units except for the evaporator fans This alarm will remain active until the motor protector resets This alarm is deactivated if the unit is operating on water cooled condensers Alarm 25 Compressor High Pressure Alarm 25 is triggered when the compressor high discharge pressure safety switch remains open for at least one minute This alarm will remain active until the pressure switch resets at which time the compressor will restart Alarm 26 Sensors Failure Alarm 26 is triggered by a reading that all of the control sensors are out of range This can occur for box temperatures outside the range of 40 40 F to 55 131 or in the unlikely event that two four in DataCORDER unit probes are bad This alarm is masked for 15 minutes to give the unit time to bring the box within range If the problem is that the unit is out of range the DTT is used to determine if the high or low limit is being exceeded If still out of range after 15 minutes the probes are considered in error and the alarm is triggered This alarm triggers the failure action code set by Code 28 Alarm 27 Probe Circuit Calibration Failure Every second the probe circuit current source is checked for proper calibration If after three consecutive seconds the current source cannot be brought int
91. El4J37 2143 4 133 62 1 93 1192 7 9 41 8 1253 9 9 Gt 1233 lt gt lt gt 8 ELWa vlW3 C XR lt 2143 llaa 33 kiwo 2 I 933 LLWO oy e EMG CF23 12 15 GRD 15 Z0949 2 2 E 1329 1 1 1282 142 4 2 181 1 6006 0 6 999 O zgdo Lado CMG EMG CPG 282 4 4 c82 4 tla 4 7 FT lt BLU PE17 TB2 sPARE O a 1 O Sparel a 238 Do FSA H F38 TB1 GRN YEL BLK BRN 11 gt 12 13 11 CLA 23 TRH41 TA CDV FERRITE CORES NO OF NO OF TURNS WIRES 2 THRU CABLE WIRES RTS SRS STS PR1 PR2 PR3 USDA BRN N YEL BLU eR
92. _ 281 2H 22 PTS 91 0 1 7 2 TAN BLK 2 Ors PNK NR k 91 40 7 ORN A S orn Npp14 0150 2 4 PM GRY PDS a16e HTT ILC uvr BLU 8 S RED UVT UC Gr AP 9176 UV lt lt e PA gt 5 4x le SIDE N PE10 0200 4 SMV MDS PD 40210 1 24 gt C lt T TN KEYWAY A PIER N 200 gt YY YT Y BLU ST a Specs 99 95 Ans ES ICF oRN A on mf jane PN p D B L AN 1459 9 64 BATTERY ss oc 21 1 1 m E MODULE lt o CI 22 21 RED tu t o BATTERY FREE 5 9 B casa JR 0 pue m xoc NN lt 538 2 54 962 fae 9 25 Jo9 B 69NT35 1887 Wel pag als ARTWORK amp 9NT35 9724 REV Figure 5 46 Electrical Wiring Diagram Model 69NT40 444 18 Sheet 2 of 2 5 93 Revised 8 6 93
93. f ox m m 0 m N N N ul F 69 9 m 55 xag 2 l l uj lt e L ul s m DL 3 a REV ARTWORK 69NT35 9504 gt N umm DHBL TEMPERATURE CONTROLLER LOGIC BOARD DHTH ANNUNCI ATOR DHB PF L DHT PF 3 DPH DIGITAL DISPLAY 6 5 Pe TIE eise Row ER TB17 0 UVT ms d JJJ 6 1 0 a TB3 R 4 BR 3 RTS TB16 R L BR C11 VSA4 C12 VSB4 C13 VSC4 3 ses
94. m uU BLK 460 3 60 REV ARTWORK 69 135 9204 N Figure 5 34 Electrical Wiring Diagram Model 69NT40 444 13 Sheet 1 of 2 5 68 n a U WATER 7 PRI Bese ro pe ELK WHT BLU TEMPERATURE CONTROLLER ous du WHT RED lt 6 K8 BLU MK 538 BRN POC TC BOARD WROD TCR D 535 VIK 3 2 GRN AAAA PPB PNK K B alils e pr VP X RYK SPARES FROM 855 BRN
95. n m wo Ld E mq lt EE 5 8 ARTWORK PLATE 6 20 3364 20 2993 Figure 5 13 Electrical Wiring Schematic Model 69NT20 274 1 Sheet 2 of 2 5 27 10 11 12 13 14 15 16 17 18 19 21 22 621 522 TB3 Lee LO EMG EF22 HEF23 522 523 814 EMP2 Sheet 1 of 2 5 28 1 mio eem Eon 72 Seu fo boodo NM L A lt ea ste RH EXE i pede COR Em g 020 R 1043 05 C 1989 EMI ue S oP fl watts Ge yteia J t elo DX Rd 8 5 s B lt p ee CR gr I 1 GQH uo e 1 99 5 Koia
96. 12 822 NM 3 23 88 es 55552 ogos exo Sim gt gu 91961996 11 Ec OVE HTT 3 se 2017 SHLD P DAMM em ppa2 5 HHS SHLD ANIAN BRD 8 16 24 4 16 DI 0TT 02 5 7 DI TBS AN 1 7 5 5 1 qu Da 8 CH cCPB8 1108 PDI6 5 E 021 5 9 01 07 VV abt 0100 2182 4 PD23 01110 1 ncs3 Pr 3 03 IRX2 MV 120 4 WP vio 29 A N pTs L D13F PC17 2 BLK 7 2 GH 06 1 0 140 1 A RED Q ORN A 6 ORN 14 0150 4 2 AN 8 0 160 BLU 2 H Reo 0170 4 PE12 0 1BE 8LK 18 0 190 5 SIDE N 10 200 5 MDS 0210 lt 2 gt DF SIGNAL Far s lt 510 1 zo m YOY s Wt eee 8 58 D ST T did al 2 BLK an 11 l 88 ad 54 1211415 123 0 BS BB TE D B BLU dnl 9 99 USDA BATTERY BRE n 5 m Hx QJ 05 8 So 28 38 38 5 s ____ nu
97. 5 108 Revised 8 6 93 val CC Segue ET WHTZYEL vei amp u3 8 HR22 DHBL 2088 BEN TEMPERATURE CONTROLLER amp u d u 523 DHTL WIRES ANNUNCIATOR CEPS BRN FOSTO DHBR ICR RED D PF iiir HR23 DHTR AS ED PR2 WHT 2 GRN LORY c BLUT A DIGITAL DISPLAY RED 6 col SPARES 5 2 PG N wD HCS L D USDA one SHIELD mu TIT 1LC1 BRN CADEE M y 2124 00 PS 1 0 BOARD 7885 BLK 2 ats 783 97 1B4 BR 21 U LTB16 9 R TBE e BR 4 3 4 lt C11 CB21 5 3 12 22 _ _ _
98. 8 QOO bLWo ELWa vlW3 rlH3 lt CO 1153 I ci3d3 4 133 4 DE I Xu1 I 933 LLWO CF23 7812 7815 GRD 2349 292 4 K 2143 92 4 K 1 2994 K 11424 N 2181 6006 0 6 999 C zgdo Lado vid 2283 O sPARE O TERM END CIB3 CFROM CIB F34 0 F38 o PE17 TB1 1 6 TB2 a PROVISION FOR OPTION BLK 11 s1 WHT gt 13 RED 12 22 23 C11 TRH1 C13 TRH4 D TRH4 E RED EN CDV FERRITE CORES NO OF NO OF TURNS WIRES 1 1 2 2 THRU CABLE WIRES RTS SRS STS PR1 PR2 PR3 USDA PP PU Pa 460 3 60 REV ARTWORK 69NT35 1308 Figure 5 54 Electrical Wiring Diagram Model 69NT40 441 24 Sheet 1 of 2
99. 9 7 C9 F9 07 08 A6 B6 C14 E7 L4 L10 010 E18 7 9 9 09 Kn 18 012 65 816 616 17 011 012 K18 618 14 H18 m 06 H18 67 19 F11 K10 K9 H5 8 09 SYMBOL AMBS C81 CB2 cov CHT CL CM CP CPDS CPSS CSAS CT DHBL DHBR OHTL DHTR OL LEGEND DESCRIPTION AMBIENT SENSOR COMPRESSOR CONTACTOR CIRCUIT BREAKER 460V CIRCUIT BREAKER 230 CAPILLARY DE SUPERHEATER VALVE R22 OPTION CONDENSER FAN CONTACTOR CYLINDER HEAD THERMOSTAT R22 OPTION COMMUNICATIONS INTERFACE MODULE COOL LIGHT WHITE CONDENSER FAN MOTOR COMPRESSOR MOTOR COMPRESSOR DISCHARGE SENSOR COMPRESSOR SUCTION SENSOR CONDENSER SATURATION SENSOR CURRENT TRANSFORMER DEFROST HEATER BOTTOM LEFT DEFROST HEATER BOTTOM RIGHT DEFROST HEATER TOP LEFT DEFROST HEATER TOP RIGHT DEFROST LIGHT AMBER DRAIN PAN HEATER DEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR EVAPORATOR FAN MOTOR FUSE FULL LOAD AMPS HIGH PRESSURE SWITCH HEATER CONTACTOR HEAT TERMINATION THERMOSTAT INTERROGATOR CONNECTOR INTERNAL PROTECTOR IN RANGE LIGHT GREEN IN LINE CONNECTOR R22 OPTION MANUAL DEFROST SNITCH POTENTIAL TRANSFORMER RIBBON CABLE REMOTE MONITORING PLUG RETURN RECORDER SENSOR RETURN TEMPERATURE SENSOR SOLENOID MODULATING VALVE SUPPLY RECORDER SENSOR SUCTION SOLENOID VALVE START STOP SWITCH SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION CONTROLLER RELAY COO
100. C12 VSB4 y CT E BLK C13 VSC4 gt YY a 5151 188 IP mn p i Z w F CPBS V ad 99199 1 2 SHLD sto PC 017 0 4 UX LRD 9 9 HCA Gee P A poa to 6 D H DTT 7 6 PD2 7 T A 1 t D i HPS 8 a rr 1 PD16 AN 8 pog a PD2i H 9 4 j j N Pos O100 ssv 3 er 5d 120 T82 wn 20 x PTS t o130 4Pc17 BLK 7 2 PD6 14D EMP1 PM ORN 2 S 6 ORN 4 0156 4 un n PD9 0 160 uv te BLU O RED UVTN 0170 RMB PE12 1 0 180 RMD 2 KEYWAY 18 0 190 5 Oe SIDE N SIDEN PEIO 01 200 smv BMS MDS CDV 7 21 Y 15 gt lt gt O L LOCATING TAB ON BOTTOM GRD lt gt PpD24 lt gt 1 3 11 n gy BU 5 28 aw
101. GIC 1232 gt se eza tH vY e 5 ZHUL VIC Xe e e Tem Hda x m m uy gt gt eV eni gt 9 J wool i lt gt ZPO amp 192 122 9 pope pyd eldd XS L JU d oxo SEDO 21 Vdo 2 AX ea CH O O JAP D CX pure C Tie 7 Cx e L i 58 55 5 37e u e N 9 C l l l l WIRES 2 2 TURNS 1 1 FERRITE CORES NO OF OF WIRES RTS STS XP lt 460 3 60 230 3 60 8314 REV 59 35 Figure 5 16 Electrical Wiring Diagram Model 69NT40 444 6 Sheet 1 of 2 5 32 TEMPERATURE CONTROLLER HR22 DHBL vka ANNUNCIATOR 21 DTE PF DHBR PF VSJ4 iios IDHTR DIGITAL DISPLAY DPH PG Fe 1 0 BOARD LOGIC BOARD T83 R TB49 5h eer Fem C11 VSA4
102. L 21314 5 6 41601601714 1 2 3 4 5 Ie 2 T9 e CONTROLLER 3 2 1 4 5 5 R BH LOGIC BOARD P sa s 71613 4 8 PB 1121314 1516 17 1 91 22 2133195 23 6 516 12 314 R T3 EJ Es mT ELI 1 COMMUNICATIONS c 1 DISPLAY ASSEMBLY il 1 zeco MODULE _ 1 4 Ts AAA A 1 I ATOR X X 3 ABCDEJ ABCDE m uw lg et TCR ICF R 8 5 g 6 x 0 6 1 I 12131215 11213 FOR REORDERING SPECIFY REK CTD P N 69NT20 373 122 N 69NT35 9424 9 35 1607 ZJ Figure 5 39 Electrical Wiring Schematic Model 69NT40 444 16 Sheet 2 of 2 5 79 10 11 15 18 19 O a lt B C EF21 EF22 6521 522 2 95 5 GRD 3 Il e G 1 EMG EF22 EF23 ES22 ES23 EMP2 1 e EMG 6253 ELSA 2153 1153 OBO 999 r CLWA LLWa LLS3H DEAN OE 68 41 f C
103. PROBE RECEPTACLE USDA G4 PT POTENTIAL TRANSFORMER H10 QV QUENCH VALVE B15 6G16 R RIBBON CABLE 19 RRS RETURN RECORDER SENSOR 618 RTS RETURN TEMPERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE 18 SRS SUPPLY RECORDER SENSOR SSV SUCTION SOLENOID VALVE E6 ST START STOP SWITCH H18 STS SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION J TC CONTROLLER RELAY COOLING J5 TCC TRANSFRESH COMMUNICATION CONNECTOR J8 CONTROLLER RELAY HIGH SPEED EVAP K4 TFC TRANSFRESH CONTROLLER 110 TH CONTROLLER RELAY CHEATING 18 TN CONTROLLER RELAY CONDENSER 010 TQ CONTROLLER RELAY QUENCH 14 TR TRANSFORMER ES TRCI TRANSFRESH REAR CONNECTOR L5 TRANSFRESH REAR CONNECTOR 11 5 CONTROLLER RELAY SUCTION SOLENOID VALVE 19 CONTROLLER RELAY LOW SPEED EVAP Ey UV COMPRESSOR UNLOADER SOLENOID R22 OPTION J7 UVT COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTION E8 WP WATER PRESSURE SWITCH Figure 5 33 Electrical Wiring Schematic Model 69NT40 444 13 Sheet 1 of 2 5 66 11 4 POWER POWER PLUG CABLE c T T 4560 3 50 lt BLU T OR A 380 3 50 lt GRN YEL 2 1 3 a PE CONTROLLER LE PG R PG PL TQ PD17 PD21 TS Pp17 PDB USDA BATTERY MODULE 2 1
104. Saal D CIB3 CFROM CIB TERM END LH wa Pro 556 L el ap uo ina p SIT gk 5 2 e143 C N ZXUL E mut us F347 0 TB14 5 PROVISION FOR OPTION BLK q 460 3 60 P CB1 22 amp 12 2 5 76 5 Sheet 1 of 2 TI BK W CF21 15 GRD 12 S 1 o T 8 sess QR e94 ovis ba ao OS 181 9 CY phar gt CB2 230 3 RUD m PT u rs 2 97 Figure 5 38 Electrical Wiring Diagram Model 69NT40 444 15 aee lt mH izao Y d m 2 GY 9 gt pig gt o Wer m l EQS a MX
105. TB4 9 BR 1 Ero 2162 Q lt ALG GHE C11 V5A4 a 3 45 C12 V584 cr C13 V5C4 B A zin 5 RED 44 5 2 _ re Du 1 0 F94 F6 2 TB12 PES CPBS HIT 3 emp 4 mrs SHLD 187 5 HPs SHLD ___ 04 060 DTT oE 9 s lt gt 16 CSAS BLK OOOO gt AMBS CPDS QO Gf OLI a n 0 7 D T85 8 4 89 CP88 21 3 9 0 NA TS Pos O1100 ssv C 182 a 0110 D ms TRx2 5 17 2 2 5 BLK PD6 11140 EMP1 3 S ER 014 0150 4 2 9 0160 7 RED CC1 170 RMB PA 12 0 186 18 0 190 4 SMV SIDE 10 200 4 5 MDS PD7 1121C1 RMC i TB4 D In LOCATING TAB ON BOTTOM
106. als ARTWORK AZ o Lo 69NT35 9314 REV Figure 5 36 Electrical Wiring Diagram Model 69NT40 444 14 Sheet 2 of 2 5 73 LEGEND ZONE SYMBOL DESCRIPTION J18 AMBS SENSOR L7 N2 C COMPRESSOR CONTACTOR D1 CB1 CIRCUIT BREAKER 460V C3 CB2 CIRCUIT BREAKER 230V L8 CDV CAPILLARY DE SUPERHEATER VALVE R22 L9 N6 CONDENSER FAN CHT CYLINDER HEAD THERMOSTAT R22 OPTION 18 CI COMMUNICATIONS INTERFACE MODULE CL COO IGHT 59 96 CONDENSER FAN MOTOR 07 03 COMPRESSOR MOTOR I18 CPDS COMPRESSOR DISCHARGE
107. e EIU 10 0200 a PD7 3210H nu c TB4 2 f X LOCATING TAB ON BOTTOM pe KEYWAY 45 SIDE i MED NP UE CE RA NR OQ ak P FT T T 98 448 r T i TL gt 08 po 1131523 O cl d ss sss cS DESI EM e O lt 24 24 38 32 78 amp 8 e Lysi A USDA BATTERY PACK a 0 sg B RH DS Fes NN ARTNORK z 51 8 3 69NT35 8714 REV A Figure 5 24 Electrical Wiring Diagram Model 69NT40 444 10 Sheet 2 of 2 5 49 ZONE SYMBOL J18 AMBS 814 13 BMS L N2 C 01 CBI C3 CB2 L8 CDV L9 N6 CHT N18 CL 69 06 CM 07 03 118 CPDS 118 CPSS CR J18 CSAS J2 CT 05 DHBL PS DHBR PS DHTL 05 DHTR J12 DL NS DPH 12 OTT K10 L9 N8 EF 09 F9 08 09 EM K9 L10 07 ES AS B5 14 F FLA F7 HPS 110 4 HR E10 HTT E18 IC L8 ILC C7 C9 F9 G9 H7 Ki IRL E12 MOS H4 PT H11 av 817 616 R K7 K11 K12 RM K18 RRS 618 RTS 14 SMV H18 SRS 111 55 E6 ST H18 515 TB 17 TC 18 611 110 TH I9 TN cn TO J4 TR 03 TRANS 011 TS 110 TV L
108. 10 C 14 F This frost pattern is described below The temperature controller varies the amount of current to the suction modulation valve coil SMV which in turn increases or decreases the amount of restriction in the suction line so that the net cooling capacity of the unit will match the cooling required to maintain the load at set point When the suction modulation valve is approximately 40 closed approximately 0 6 amps output to the Revised 8 6 93 suction modulation valve coil from the temperature controller the temperature controller will energize the quench solenoid valve When the quench valve is opened a small amount of liquid refrigerant is metered through an orifice which acts as an expansion device into the suction line down stream of the suction modulation valve Because of low compressor suction pressures created by the suction modulation valve the liquid fed by the quench valve flashes to a low temperature gas and therefore the compressor may form frost or ice on the end bell and top of the motor cavity adjacent to the suction gas path of flow This is not harmful to the compressor as the restrictor in the quench valve line prevents excessive liquid from flowing into the With the controller set below 10 14 F the allowable compressor frost pattern limit is shown in Figure 1 6B The frost line will not normally extend beyond the suction service valve as the quench valve will
109. 16 cw am qv Pps iud IPp21 Hes TI i 3 TB18 Rig fr EM PE9 PE12 DTT TB21 emo DS oL EN 207 91 B20 FH PE 1 21 3 4 5 6 7 8 4110 11 12 13 14 16 18 17 15 PD 1 3 415 6 7 8 191 1 1 2131415161718192021222324 S CONTROLLER PH 2141516 R 140 BOARD PH LOGIC BOARD r 2563148 PA MEE ER PG 1 2 3 4 5 6 7 8 3 Pe 4 1 9 7 13 24 1 2212 13 18 416 6 5612314 R 3 TT COMMUNICATIONS PG INTERFACE DISPLAY ASSEMBLY MODULE 4 1 4 2 3 ABC DE 2 uo wo amp ANNUNCIATOR RRS ICE n Eod m D 51 L O_O lt O N 2345 2 3 LZ FOR REORDERING SPECIFY ARTWORK PLATE gt 35 9254 REV 69NT20 3183 CTD P N 69NT20 373 119 Figure 5 31 Electrical Wiring Schematic Model 69NT20 274 2 Sheet 2 of 2 5 63 10 11 12 13 14 15 16 17 18 19 D EF21 EF22 ES21 522 TB3 EMP2 GRD ei 3 1 7e 22 2 922 1 ES23 EMP2 19 rr814 4 EMG 2 PELA C 29531 eei 5 2282
110. F3B 1 Rawi 111 21 3 5 6 IP TRANS 131 55 5 IP CP TBB HPS Tes AUTO TC c n b PD2 20 61162 ANTE 18170 Cy BM UE A il 3 11 EF 111 21 1 12 am 1 TH 121 n CHT 2 CDV 121 22 MV 2 Lm Tal 22 WP 12 1 15 Tal 23 13 23 Pic P2 PD141 ci c2 4 11 2 12 14 3 Plc P2 P20 P1 pos Pos 16 HR gt Pos 1 2 18 Ssv d TU TBIB RM r 2 De X TB4 DTT 21 RM RM lt ory MDS 2 1 SMV TB29 1819 L 2 3 4 567 probo pap 715 1 2 3 4 5 8 7 213141506176 sola 2 4 9 CONTROLLER PH 312 1 1816 1 0 BOARD E LOGIC BOARD 3 1 2 5 7 5 3 4 8 B 3 12 314 1517617 7185 5 23 224 1 1331 5161 121 314 R z COMMUNICATIONS Rer 7 INTERFACE H MODULE T ANNUNCIATOR x 2 ABCDE cI A 4 pm m um m um RRS 5 ICF m EN D B 5 L 2 3 4 5 1 2 3 17 7 ARTWORK PLATE i FOR REORDERING SPECIFY 69NT35 9634 REV 35 1797 lt CTD P N 6SNT20 373 125 Figure 5 41 Electrical Wiring Schematic Model 69NT40 444 17 She
111. TB21 112131415181718 9110111121314115161716192021222324 1 0 LOGIC BOARD 4 17 11 20 7 21 118 8 24 1 22 2 13 3 18 5 23 9 10 14 15 TC PD2 20 TN TE 1 18 PD1 31 41 010 H HCS TB11 1 3 DEFROST SIGNAL 9 1 215 7 53 48 De energized Circuit Figure 2 2 Heating Mode 2 4 2 4 3 Defrost See Figure 2 3 Refer to section 1 13 4 Code 26 for description of the defrost interval selector and automatic defrost initiation When the defrost mode is initiated the controller relay contacts TH close to supply power to the heat relay HR andin turn energizes the defrost heaters The defrost light is illuminated TC opens to de energize the compressor contactor and cool light Also TN relay opens to de energize the condenser fan motor contactor CF Also TE amp TV relays open to stop the evaporator fan motors The in range light remains illuminated during defrost When the coil temperature reaches 24 75 F defrost termination thermostat DTT opens to interrupt the defrost cycle and the unit returns to its normal function The 54 5 130 F heat termination thermostat HTT will open the circuit if the defrost mode does not terminate at 24 75 F The controller will terminate defrost if
112. hoop repe ps p U 2 3 4 56 2 Te a pps sh 7 19 r9 20 2 2212324 6 CONTROLLER 1 0 BOARD pz PH LOGIC BOARD a 91 2151 31 s PG 12131 415 6 7 8 9 Pcl 7 21 24 1 22 2 13 3 18 5 23 9 10 14 16 6 sls 1121314 R LI r7 COMMUNICATIONS PG ids _ INTERFACE DISPLAY ASSEMBLY MODULE 1 aA t 2 ANNUNCIATOR E 5 ABTT E ch 4 o uuo o RRS 5 mE 8 ERE N N 4 172 3415 1213 17 ARTWORK 9 35 8484 REV lt Figure 5 25 Electrical Wiring Schematic Model 69NT40 444 7 amp 444 8 Sheet 2 of 2 5 51 10 11 12 13 14 15 16 17 18 19 Cc EF21 EF22 3 ES21 522 EMP2 Oe GRD rs EMG HEF22 I EF23 522 523 814 EMP2 CF21 EMG EM2 e CF23 7812 7815 rs fa 22533 1534 kera 2153 11531 99990 1253 1404 1331 191 11334 11491 1091 pHdd T LLN3 1 1 ripaa 1933 8104 O60
113. supply return USDA 1 and USDA 2 every minute over the hour interval to calculate an average temperature for recording at the clock TIC If the setpoint at the time of the TIC is within the cold treatment range of 27 38 it is assumed that a treatment is in progress and the temperatures recorded are snapshot or instantaneous values If the setpoint is outside the cold treatment range the average temperature is recorded The standard DataCORDER report displays the supply and return air temperatures The cold treatment report displays USDA 1 USDA 2 and the return air temperature Cold treatment recording is backed up bya battery so recording can continue if AC power is lost The battery capacity is sufficient to allow recording for eight days at 0 ambient After eight consecutive days of battery backed up recording the controller automatically disconnects the battery from the DataCORDER to prevent its damage The battery is housed in a module that also contains a charger to maintain or restore battery capacity when AC power is on This module is located on a stud plate in the lower left corner of the unit 1 23 When the dehumidification mode is activated or de activated ie Code 32 is turned ON or OFF this status is stored in the DataCorder memory and reported at the next TIC Note All microprocessors with revision 104 software will have dehumidification capability but some units are NOT equipped with a humidistat Refer
114. 1933 8104 1153 72133 99900 90990 XII 9990000 8d9 2 L8d0 2909 590090 133 Ei FC9d3 Do F34 He CJ CJ F6 CJ F34 O 0 F3B 1814 TB CIB3 FROM CIB PROVISION FOR OPTION K WHT 2 CMG EMG CPG J OPTION PROVISION CIA3 FROM CIA y C145 FOR OPTION 7 REF RING gt 1 d BLK 12 gt 13 RED 23 FTRHI cn TRH E 2 22 C13 TRH4 2 X 4 A RED qTB13YV GRD 0 H c m x b N Uu WIRES CABLE NO OF NO OF TURNS 2 2 THRU FERRITE CORES WIRES RTS SRS STS PR1 PR2 3 USDA 460 3 60 REV ARTWORK 69 135 7704 N Figure 5 2 Electrical Wiring Diagram Models 69NT40 444 amp 444 2 Sheet 1 of 2 5 4
115. 3 16 13 N 14 5 eo n 8 i 12 2 17 10 A P d 9 T C Y a 8 E Ye 4 N 219 3 7 1 1 Suction Service Valve 2 Discharge Service Valve 3 Air Cooled Condenser 4 Water Cooled Condenser or Receiver 5 Sight Glass 6 Water Outlet 7 Water Inlet 8 Pressure Relief Valve High Side 9 Pressure Relief Valve Low Side 10 Liquid Line Valve 11 Filter Drier 12 Moisture Liquid Indicator 13 Expansion Valve 14 External Equalizer Line 15 Expansion Valve Bulb 16 Evaporator 17 Suction Solenoid Valve 69 40 18 Modulating Solenoid Valve 19 Quench Valve Solenoid or Thermostatic Figure 1 5 Refrigeration Circuit 1 9 WATER COOLED CONDENSER OPTIONAL The water cooled condenser is used when cooling water is available and heating the surrounding air is objectionable such as in a ship s hold The water cooled condenser is of the shell and coil type with circulating water through the cupro nickel coil The refrigerant vapor is admitted to the shell side and is condensed on the outer surface of the coil 1 9 1 Water Cooled Condenser with Water Pressure Switch For operation of the refrigeration unit with the water cooled condenser do the following a Connect water supply line to inlet side of condenser and discharge line to outlet side of condenser b Maintain a flow rate of 11 to 26 liters per minute 3 to 7 gall
116. 4 IZHY L ezgo vld O O Do F3AT HPE 7 a FS T TB2 a 3A1 n F38 3B 1 JS BLK RED 11 X2 1 m H in ci GS V ehe CIAS RED oFERRITE CORES NO OF NO OF TURNS WIRES WIRES RTS SRS STS RRS 460 3 60 REV ARTWORK 69NT35 9074 N Figure 5 30 Electrical Wiring Diagram Model 69NT40 454 2 amp 454 3 Sheet 1 of 2 5 60
117. 5 43 10 11 12 18 14 15 16 17 18 19 Ge lz urea 100 ne CF21 H Era O2 22 523 0 522 CM EM CF2 ft e a 4 P1 TB3 P2 as EMG EMp2 EMG GRD SRD CLO GN Kx lt 14 N Q Gs KG 4 Y AG B ROKK NON QN M m wa o m tn C u m m u eu gt Q Q U U U UL amp Q amp tn amp o amp S op Bo UE MI M s 8 8 5 6 5 6 5 5 amp cov mim CPB c21 uv C22 2 9 xs yan 5 N D 1 1 a e 5 gt HS OO a 8 121 05 0 2 TRX21 EF13 EF11 PD18 EF41
118. CHARGER BOAI BATTERY 1 2 3 4 5 8 7 8 89 10 11 12 13 14 16 18 17 15 1 3 2 1 4 5 5 1121314 516 7 DISPLAY ASSEMBLY PF ANNUNCIATOR L 8 ICR ICF PH R PH TC Ppa PD20 7817 TN PD14 PD13 TE 1 018 TV TH 09 1 PD10 SSV 1821 2 DEFROST SIGNAL 1 0 BOARD LOGIC BOARD E i r PC 4 17 11 20 7 21 19 8 24 1 22 2 13 3 18 5 23 9 1014166 D real ARTWORK X69NT35 9194 REV PLATE 69NT35 1487 2 2 3 4 5 6 7 81 9110 11 12 13 14 15 16 17 10 19 20 21 22 23 24 COMMUNICATIONS INTERFACE MODULE CI 1 2 5 7 8 3 4 8 FOR REORDERING SPECIFY CTD P N 9 20 373 118 Figure 5 33 Electrical Wiring Schematic Model 69NT40 444 13 Sheet 2 of 2 5 67 10 12 13 18 17 1812 1815 GRD
119. D Full System Shutdown Factory Default Code 29 In Range Tolerance The in range tolerance will determine the bandwidth of temperatures around the set point which will be designated as in range If the control temperature is in range the in range light will be illuminated There are four possible values 1 0 5 C 0 9 F 2 1 0 C 1 8 F 3 315 E22 E 4 2 0 3 6 Code 30 Stagger Start Offset Time The stagger start offset time is the amount of time that the system will delay at start up thus allowing multiple units to stagger their control initiation when all units are powered up together The eight possible offset values are in seconds 0 Factory Default 3 6 9 12 15 18 21 Code 31 Current Limit The current limit is the maximum current demand allowed on any phase at any time Limiting the unit s current amperage reduces the load on the mains power and lowers the compressor discharge pressure Whenever this is desirable the limit can be lowered Note however that capacity is also reduced The five values are 21 Factory Default 15 17 19 23 Code 32 Dehumidification Control This code activates the dehumidification control mode of the system Press the Enter key to toggle the mode between and OFF When the code is set to ON the control probe LED will flash ON and OFF every second to indicate the mode is active Code 32 is only appl
120. ES C7 C8 F8 G8 K11 E12 GS H10 817 616 17 11 618 14 111 06 H18 H7 J8 611 19 18 D10 IS E11 J6 D8 LEGEND SYMBOL AMBS C CB CB2 DESCRIPTION AMBIENT SENSOR COMPRESSOR CONTACTOR CIRCUIT BREAKER 460V CIRCUIT BREAKER 230V CONDENSER FAN CONTACTOR COMMUNICATIONS INTERFACE MODULE COOL LIGHT CONDENSER FAN MOTOR COMPRESSOR MOTOR COMPRESSOR DISCHARGE SENSOR COMPRESSOR SUCTION SENSOR CONDENSER SATURATION SENSOR CURRENT TRANSFORMER DEFROST HEATER BOTTOM LEFT DEFROST HEATER BOTTOM RIGHT DEFROST HEATER TOP LEFT DEFROST HEATER TOP RIGHT DEFROST LIGHT DRAIN PAN HEATER DEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR EVAPORATOR FAN MOTOR FUSE FULL LOAD AMPS HIGH PRESSURE SWITCH HEATER CONTACTOR HEAT TERMINATION THERMOSTAT INTERNAL PROTECTOR IN RANGE LIGHT MANUAL DEFROST SWITCH POTENTIAL TRANSFORMER QUENCH VALVE RIBBON CABLE REMOTE MONITORING PLUG RETURN TEMPERATURE SENSOR SOLENOID MODULATING VALVE SUCTION SOLENOID VALVE START STOP SWITCH CIRCUIT BREAKER SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION CONTROLLER RELAY COOLING CONTROLLER RELAY CONTROLLER RELAY IN RANGE CONTROLLER RELAY HEATING CONTROLLER RELAY CONDENSER FAN CONTROLLER RELAY TRANSFORMER CONTROLLER RELAY SUCTION SOLENOID VALVE HOUR METER VOLTAGE SWITCH WATER PRESSURE SWITCH OPTIONAL Figure 5 15 Electrical Wiring Schematic Model
121. Gravity Circulation Figure 4 18 Water Cooled Condenser Cleaning 7 time required for de scaling will vary depending upon the extent of the deposits One way to determine when de scaling has been completed is to titrate the solution periodically using titrating equipment provided free by the Oakite Technical Service representative As scale is being dissolved titrate readings will indicate that the Oakite No 32 solution is losing strength When the reading remains constant for a reasonable time this is an indication that scale has been dissolved 8 When de scaling is complete drain the solution and flush thoroughly with water 9 Next circulate a 56 7 gram 2 ounce per 3 785 liter 1 USS gallon solution of Oakite No 22 thru the tubes to neutralize Drain this solution 10 Flush the tubes thoroughly with fresh water If the condenser cooling water is not being used as drinking water or is not re circulated in a closed or tower system neutralizing is not necessary 11 Put the unit back in service and operate under normal load Check the head pressure If normal a thorough de scaling has been achieved What You Can Do For Further Help Contact the Engineering and Service Department of the OAKITE PRODUCTS 19 Rector Street New York NY 10006 U S A for the name and address of the service representative in your area 422 CHECKOUT PROCEDURE FOR OPTIONAL POWER TRANSFORMER Ifthe unit does no
122. I A RI BK T vy B1 2502 460 3 60 52 lt mom 121 122 E 380 3 50 T3 R 13 123 l 1 4 SEA PT H4 M H3Q 12VAC 121 22 gl ro x 24VAC 1 23 ET 13 amp lt 8 5 ST 6 x 1 m 2 1 21 a lr C 5 6 IP CP TBB HPS TBS TB7 TC C 13 123 4 8 182 ial Lh 56 SRO 20 E 817 4 D ote n a 3 8N gt a CHT 2 CDv 121 122 Y 7812 IP CM TBIS TN e 131 123 PI 0141 PD13 2 s TB14 35V ap 85 018 2 HTT 7815 PD9 ciLic2 TQ utis av PD21 IS 1 SSV TI 1 Me PES 2 DS VU DTT 21 RM MS o QU 0 6 2 1 1 7820 y 1819 2 3 4 Ts Te T 2488 1 2 3 45 7 e r2 rimis e 2 ve vs 2 2223124 9 CONTROLLER pw S TTTaTSTE s 1 0 BOARD LOGIC BOARD 8111215 7 6 3 4 8 B PA pe Acc PG gt 3 415 6 7 8 8 4 17 18 5 15 9 23 1 14 15 6 5 6 1 2 4 R I PG 4 DISPLAY ASSEMBLY I gt ANNUNCIATOR 1 y amp 5 am
123. PE PU BLK Pa 460 3 60 REV ARTWORK 69NT35 1078 Figure 5 48 Electrical Wiring Diagram Model 69NT40 444 19 Sheet 1 of 2 5 96 Revised 8 6 93 7 TUS mno WHIAYEL PRI 2156 DHBL WHI BLU f 7 TEMPERATURE CONTROLLER u HR22 7098 WHT RED B BLU DHTL WIRES ANNUNCIATOR DUET BRN COSTO ABOARD DHBR ICR RED K D DHTR C D 10 lt 3 2 GRN HR23 8 ppg B PRA pas AAAN al RYK C DIGITAL DISPLAY SPARES 6 tank 6 c pc Hes wand ORG lt D US
124. SHLD O 3 29 PD4 0 6 GOTT BRD 6 i Y PD2 O 7 04 85 A TE ul HPs ti H C DD 8 6 lt nnn y m Zaun usa gt nng mon CIB1 2 3 E PD23 D 10 ucs3 TRX ACORN 5 30 PC17 Q BLK 3 GH e N 1 40 EMP 1 PM RN 3 PD1 4 01 50 1 x rx pps to ea HTT ILC BLU Q e RED uv lt te PA 70 1 KNT Y 1 01 80 12 RMD Im PE18 n1 9n 8Mv 4 SIDE 10 4 2 5 EDV DS po7 o210 RMc lt 2 gt LOCATING TAB ON BOTTOM 02444 lt rH KEYWAY SIDE 2 sS ss Si IDE gt BLK vo n M 3 T adis FB orn JE pj Jg SLcB21 T81 2 o e 9 s 49 RE gt 35 e 28 3 4 gt 9 a 5 5 8224 RED TO 74 5115118 TRX14 lt 1 gt PLATE OPTIONAL 20 3273 69 35 1168 REV Figure 5 44 Electrical Wiring Diagram Model 69NT20 274 3 Sheet 2 of 2 5 89 Revised 8 6 93
125. SOLENOID MODULATING VALVE SUPPLY RECORDER SENSOR SUCTION SOLENOID VALVE START STOP SWITCH SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION CONTROLLER RELAY COOLING CONTROLLER RELAY HIGH SPEED EVAP TRANSFRESH CONTROLLER RELAY IN RANGE CONTROLLER RELAY HEATING CONTROLLER RELAY CONDENSER CONTROLLER RELAY QUENCH TRANSFORMER CONTROLLER RELAY SUCTION SOLENOID VALVE CONTROLLER RELAY LOW SPEED EVAP COMPRESSOR UNLOADER SOLENOIO R22 OPTION COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTION WATER PRESSURE SWITCH Figure 5 19 Electrical Wiring Schematic Model 69NT40 444 9 Sheet 1 of 2 5 38
126. T a BLK 95 we S ss Sa 11213 3415 23 T GRD B9 58 PN F3C ICF 8 3 onN PE PRE BL CLE D B 2 m 5 i4 o 0 99 99 usoa BATTERY 1 282 lt gt E 54 5 38 22 28 lt B js s ME IB 022 BATTERY C BLK 6 7 c823 x OPTION z z 3 252 8 54 458 ER TEMPEL zi Ln 1 gt 5 3 69NT35 8544 REV Figure 5 20 Electrical Wiring Diagram Model 69NT40 444 9 Sheet 2 of 2 5 41 ZONE J18 7 2 02 8 L8 N6 J8 N18 G8 06 07 03 118 118 J18 J2 Qs PS PS os NS C12 LEGENO SYMBOL AMES CHT CM CP 5 CPSS CSAS CT DH8L OHBR DHTL OHTR OPH OTT K9 L8 N7 EF D8 F8 08 09 K8 L9 07 ES 5 86 14 cs FT FLA Ji HCS HPS L10 N4 HR 010 HTT 018 18 IC 7K ILC C7 C8 F8 G8 E12 MOS L1 PP 117 011 11 PR G4 PT H10 816 016 R E11 111 RM K19 RRS 618 RTS F14 SMV H18 SRS i10 55 ST H18 STS T8 J JS TCC J8 TE K4 TFC 611 110 TH 18 TN 010 14 15 1 15 TRC2 11 TS 19 TV 17 UV J UYT EB WP Figure 5 21 OESCRIPTION AMBIENT SENSOR COMPRESSOR CONTACTOR CIRCUIT BREAKER 460 CAPILLARY DE SUPERHEATER VALVE R22 OPTION CONDENSER FAN CONTACTOR CYLINOER HEAD THERMOSTAT R22 OPTION
127. TEMPERATURE CONTROLLER 6628 ru uui BLU HR21 Brio ES BRN LOGIC BOARD DHBR ICR K D F ABCD 3 2 GRN HR23 ABCD PR2 s DPH 4 25 RED S BLK 2 DS HCS ugci D H9 ISHIELD eco x 3 N 7811 4 LC YEL PK Bi 7 TARS 1 0 BOARD 9 2 1 Vw RTS 24 5 P 4 DG vm 8 46 845 Esc 333 C13 CB23 vow u 2008 0 lt ama a uj gt 27 6 l LLLLL LLLLI 5 2 re 9 2 8 C TB 2 8 3 16120 24 PD4 PD2 A Y a 5 5 n amp PD16 4 B Don 3 n PD21 x A 4 2 2 9 4 I 023 D VIO ex I PTS 2 mM 2 BE 1 ORN A 5 5 7 PD14 PM GRY m BLU 7 8 S RED UVT IK cct 4 18 SIDE MDS TB4 2 5 L SIGNAL Eje P024 gt DED KEYWAY L SIDE So SACS 58580 EN 9 0 io ow lt nanc 29 Or e 1 8 ow oo mm ma 4 23 TrGRD ELE wa 9 BLUT g qiu 2 99 oc FREIE
128. TH RED Terr HL Ee d D pre TRH4 spare a aA RM BLU seat S O RI S2 T3 T 450 3 amp 0 ARTWORK 69NT35 8534 REV B Figure 5 20 Electrical Wiring Diagram Model 69NT40 444 9 Sheet 1 of 2 5 40 ff wo 1 1 m WHT YEL WHT BLU u TEMPERATURE CONTROLLER E WHT RED B LOGIC BOARD amp ANNUNC I ATOR 6228 gt D see ABCD WHT AAA PP3 ik B R2 GRYK BLUX SPARES
129. UV UvT GEND DESCRIPTION AMBIENT SENSOR BATTERY MODULE SWITCH COMPRESSOR CONTACTOR CIRCUIT BREAKER 460V CIRCUIT BREAKER 2307 CAPILLARY DE SUPERHEATER VALVE R22 OPTION CONDENSER FAN CONTACTOR CYLINDER HEAD THERMOSTAT R22 OPTION COMMUNICATIONS INTERFACE MODULE COOL LIGHT CONDENSER FAN MOTOR COMPRESSOR MOTOR COMPRESSOR DISCHARGE SENSOR COMPRESSOR SUCTION SENSOR CHART RECORDER OPTIONAL CONDENSER SATURATION SENSOR CURRENT TRANSFORMER DEFROST HEATER BOTTOM LEFT DEFROST HEATER BOTTOM RIGHT DEFROST HEATER TOP LEFT DEFROST HEATER TOP RIGHT DEFROST LIGHT DRAIN PAN HEATER DEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR HIGH SPEED EVAPORATOR FAN MOTOR EVAPORATOR FAN CONTACTOR LOW SPEED FUSE FULL LOAD AMPS HIGH PRESSURE SWITCH HEATER CONTACTOR HEAT TERMINATION THERMOSTAT INTERROGATOR CONNECTOR IN LINE CONNECTOR R22 OPTION INTERNAL PROTECTOR IN RANGE LIGHT MANUAL DEFROST SWITCH POTENTIAL TRANSFORMER QUENCH VALVE RIBBON CABLE REMOTE MONITORING RECEPTACLE RETURN RECORDER SENSOR RETURN TEMPERATURE SENSOR SOLENOIO MODULATING VALVE SUPPLY RECORDER SENSOR SUCTION SOLENOID VALVE START STOP SWITCH SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION CONTROLLER RELAY COOLING CONTROLLER RELAY HIGH SPEED EVAP CONTROLLER RELAY IN RANGE CONTROLLER RELAY HEATING CONTROLLER RELAY CONDENSER FAN CONTROLLER RELAY QUENCH TRANSFORMER TRANSFORMER AUTO 230 460 CONTROLLER RELAY SUCTION SOLENO
130. WARNING Beware of unannounced starting of the evaporator and condenser fans Do not open the condenser fan grille before turning power OFF and disconnecting power plug Some units are equipped with a Carrier Transicold DataCORDER Microprocessor recorder Detailed information on the DataCORDER will be found in section 1 13 7 Some units are equipped with a Partlow temperature recorder or a Saginomiya battery driven recorder Later models have added features to make it easy to convert to R 22 For example a low side pressure relief valve and high side pressure relief valve opens at a higher setting Refer to Table 1 1 and electrical schematic to see which models are easily converted to R 22 The electrical schematic has an R 22 option for CDV CHT ILC UV amp UVT these parts can be added to convert the unit to R 22 Some units may have a TransFRESH controlled atmosphere system added Contact TransFRESH Corporation PO Box 1788 Salinas CA 93902 for information on their system MODELS 69NT20 274 69NT20 274 1 69NT40 444 69NT40 444 1 69NT40 444 2 69NT40 444 3 69NT40 444 4 69NT40 444 6 69NT40 454 69NT20 274 2 69NT20 274 3 69NT40 441 21 69NT40 441 22 69NT40 441 23 69 40 441 24 69 40 441 25 69NT40 444 7 69NT40 444 8 69NT40 444 9 69 40 444 10 69NT40 444 11 69NT40 444 12 69NT40 444 13 69NT40 444 14 69NT40 444 15 69NT40 444 16 69NT40 444 17 69NT40 444 18 69NT40 444 19 69NT40 444 20 69NT40 444 21
131. average of 7 5 days per unit or 50 units at an average of 15 days per unit After interrogation of many units is completed the portable computer will display that it is full Itcanthen be downloaded to directly print to a serial or parallel port printer with a serial to parallel connection It also can be downloaded to a PC for storage on hard or floppy disks Once in disk storage it can be retrieved or downloaded to an analysis program for further analysis if desired and can be printed in tabular or graphical form b Remote Monitoring data that was previously described as either stored or displayed can be transmitted to a remote monitoring unit RMU shipboard computer center This data includes the present operating temperatures pressure voltages amperages and alarms defined by the code select functions This data also includes the temperature set point changes power outages defrost initiation and alarm occurrences that are stored in the DataCORDER for the last 1500 operating hours By way of 2 way communication the shipboard computer center can initiate all functions and selectable features that are accessible at the unit such as set point change pre trip initiation defrost initiation etc The remote monitoring unit RMU may be field installed to the unit Mounting brackets for the RMU are provided behind the microprocessor control panel Display Three wire harnesses are provided in the unit to
132. burned out Initiates but does not defrost Frequent defrost Wet load REFERENCE SECTION Check Check Turn on Replace Replace 4 17 4 14 Check 4 13 4 15 Replace 4 14 4 27 Replace 3 9 Replace Tighten 1 5 Reset 3 9 4 13 1 13 4 Tighten Replace 4 13 Replace Replace 2 4 3 1 5 Replace 4 15 Normal INDICATION TROUBLE POSSIBLE CAUSES 3 7 ABNORMAL PRESSURES COOLING High discharge pressure Condenser coil dirty Condenser fan rotating backwards Condenser fan inoperative Refrigerant overcharge or noncondensibles Quench solenoid valve malfunction Condenser fan switch CFS If used in position 0 when water is not circulating thru water cooled Condenser Low suction pressure Suction service valve partially closed Filter drier partially plugged Low refrigerant charge Expansion valve defective No evaporator air flow or restricted air flow Excessive frost on evaporator coil Evaporator fan s rotating backwards 3 8 ABNORMAL NOISE OR VIBRATIONS Compressor Loose mounting bolts Worn bearings Worn or broken valves Liquid slugging Insufficient oil Condenser or Evaporator Fan Bent loose or striking venturi Worn motor bearings Bent motor shaft 3 9 TEMPERATURE CONTROLLER MALFUNCTION Will not control Defective Sensor Defective wiring 3 10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW Evaporator coil blocked Frost on coil Dirty coil No or partial evaporator air
133. interconnect the labeled CI communications interface on the schematics and the controller One harness connects the RMU and controller current loop communication ports Another provides 24 volt AC power to the RMU The third connects the output port of the RMU to the 460 volt power line just ahead of CB1 Please refer to the unit schematic and wiring diagrams NOTE None of the harnesses are connected They must be field connected when the RMU is installed Revised 8 6 93 1 13 9 Setting Function Codes Without AC Power Optional For units equipped with software Revision 106 or greater Battery Module Switch BMS and Battery Module or Disposable Batteries If the user wishes to enter a new set point or change the user selectable codes Refer to section 1 13 1 i without AC power hooked up to the unit the following procedure should be followed a Make sure that the PN connector is hooked up to the battery module b Set switch BMS to position 1 Enter new set point by pressing the Up or Down Ar row keys until the desired temperature is then reached Then press the Enter key d change the user selectable codes Codes 26 through 32 must be accessed Once the desired code is reached the user may change the value of these functions to meet the operational needs of the con tainer Refer to Section 1 13 4 for an explanation of the Function Codes e Once all desired entries have been made
134. m zuo D 2243 v gt ASS 2245 1434 tL EXSA Tea N 2 R X x RGB E1324 ebay 21434 atest gt lt Ld 9 2124 111 lee 11434 GH 71H0 Haa lt gt een 555 5 22505 2559 Y X lt lt Rh EE C oro FM xil m m gu 5 lt ae 555 8 amp 222 svao s 2 6124 Hr1H9 8 80 B c 1940 2 1100 41 9 42 1194 IQ BI 00 999 d _ D Oma 00 06 00000 0099 QUEE 699 CF21 29 0 o ezo revo N 525 FIGSA 21404 6124 lt GEN gt IHSA 2840 ete ai s m 5 m 194 o 999 Nm Ms hab lt 3 5 i D 82 Gh SES hd rs 8 5 5 8 8 gt R 5 Sg 2 2 2 8 A 1 l 520
135. not energize when operating with the controller set point below 10 C 14 F If excessive frost is noticed on the compressor and the suction modulation system is operating normally then the thermal expansion valve superheat setting should be checked Flooding by a thermal expansion valve may cause oil to foam excessively Normal quench valve operation will not foam the oil significantly Adhesive backed labels depicting allowable frost patterns on compressors are available from Carrier Transicold Replacement Component Group Figure Controller Set Above 10 14 F e m Figure B Controller Set Below 10 C 14 F Figure 1 6 Frost Pattern on Compressors 1 13 COMPUTER CONTROL ELECTRONICS CENTER COOL SETPOINT Code Oj U Alarm Code Defrost Reset Select Interval 2 DEFROST ALARM AIR TEMPERATURE Data Return Supply Supply DataCORDER Trip Start TRIP START RESET Um Display then reads 0000 Hours Since Last Trip Start Figure 1 7 Microprocessor Control Panel 1 13 1 Brief Description NOTE For manual override operation of microprocessor refer to Table 4 7 CAUTION When doing any arc welding on the unit or container disconnect all connect
136. refer to Table 1 2 2 The service replacement compressor is sold without shutoff valves but with valve pads and without terminal box and cover Customer should retain the original terminal box cover and high pressure switch for use on replacement compressor 3 Check oil level in service replacement compressor If none add 4 0 liters 8 5 U S pints Refer to sections 1 3 b and 4 8 4 A terminal block kit must be ordered as a separate item when ordering replacement compressor Appropriate installation instructions are included with kit 5 Refer to Table 4 1 and Table 4 2 for applicable compressor wear limits and torque values a Remove the protective guard from lower section of the unit b Ifthe compressor is inoperative and the unit still has refrigerant pressure Remove refrigerant Refer to section 4 1 c Disconnect wiring in the compressor junction box after identifying same Disconnect wiring from compressor terminals and remove compressor junction box d Remove bolts from service valve flanges e Remove compressor plate mounting bolts f Remove compressor and mounting plate The compressor weighs approximately 118 kg 260 pounds g Remove high pressure switch HPS from compressor and check operation of switch refer to section 4 11 2 h Remove compressor mounting bolts from mounting plate and install mounting plate on replacement i Install replacement terminal block
137. stat and Compressor Self Diagnostic Conditions of Computer Functions e Provide a detailed automatic pre trip step by step checkout of refrigeration unit performance proper com ponent operation proper electronic and refrigeration control operation proper heater operation checking probe calibration and current limiting f Provide storage of detailed temperature information on set point and return and supply air record of power outage defrost initiation set point changes alarm occur rences and date of trip start This data is recorded for minimum of 1500 hours of unit operation the equivalent of 62 days continuous running operation or approximately 120 calendar days of average container utilization and can be printed out for each hour interval A backup battery saves data in the DataCORDER during periods of unpowered service For USDA recording requirements a optional backup battery for data recording during periods of unpowered service for up to 8 days and receptacle for three remote mounted PT100 resistance temperature detector RTD probes are available g Provide a convenient environmentally protected portable computer which can be easily carried from unit to unit to interrogate each unit during or at the end of each trip and then is capable of either directly printing this data out in short or long form reports or transfer the data into a PC computer for long term storage on floppy or hard disk storage The d
138. t TB3 R TB4 BR T RIS eere 2 lt 41 418 5 5 C11 CB21 5 C12 CB22 7 C13 CB23 E g CT t m C k 5 d 5 19166966 3 m HTT 3 emp 4 SHLD MD52 2022 DU 5 SHLD aS E 20966 04 0 6 HOTT BRD z 6 mum 2 1 7 D TBS AN _ 5 50 lt 0 8 H crsa NC gees 5 21 9 RMA REDT 4 J 5 208 090 100 55 3 SUPPRESSOR nun pa Do 120 wep TRX2 d PT5 U 130 17 BK O 3 n id PD6 H3 14D EMP1 ad 014 4 0150 4 2 0 160 u i 9 O 9 Y PA cert 176 1 our 12 0 180 2 m 2 8 0 190 5 OH SIDE 10 0200 5 MDS CDV 07 021 6 Y D 6 LOCATING ON BOTTOM o lt gt SIDE 2 ee E YT L NO amp 20 wa 29 SQ O ICF orn BB 58 46 28 Ore Bap 4 I 99 99 66 9 6 181 TI 4 E gt gt x Ss gt 29 78 5 8 18 13 18 OPTIONAL ARTWORK BSNT35 8434 REV A Fi
139. the control panel should be sprayed CRC Chemicals Part No 3 36 at similar time periods b Maintenance of Painted Surfaces The refrigeration unit is protected by a special paint system against the corrosive atmosphere in which it normally operates However should the paint system be damaged the base metal can corrode In order to protect the refrigeration unit from the highly corrosive sea atmosphere or if the protective paint system is scratched or damaged clean area to bare metal using a wire brush emery paper or equivalent cleaning method Immediately following cleaning spray or brush on zinc rich primer After the primer has dried spray or brush on finish coat of paint to match original unit color 421 SERVICING THE WATER COOLED CONDENSER NOTE When Oakite compound No 32 is being used for the first time the local Oakite Technical Service representative should be called in for their suggestions in planning the procedure They will show you how to do the work with a minimum dismantling of equipment how to estimate the time and amount of compound required how to prepare the solution how to control and conclude the de scaling operation by rinsing and neutralizing equipment before putting it back into service Their knowledge of metals types of scale water conditions de scaling techniques will be invaluable to you The water cooled condenser is of the shell and coil type with circulating water through the c
140. then follow the correct procedure below Vane Oil Pump See Figure 4 6 a Install the bearing head assembly with a new gasket on the compressor crankshaft Carefully push oil pump on by hand ensuring that the bearing head mounts flush to the crankcase body The top of the bearing head is marked on the mounting flange b Align the gasket and install the eight capscrews in the mounting flange c Install the drive segment with the two capscrews and lock washer d Insert the oil feed guide with the large diameter in Insert the guide retaining spring so that it fits over the smaller diameter of the feed guide The pump cover can now be installed e Place the pump cover with a new gasket over the guide retaining spring and compress the spring to enable installation of the cover capscrews Gear Oil Pump See Figure 4 7 a Install the pump end thrust washer on the two dowel pins located on the bearing head CAUTION Ensure that the thrust washer does not fall off the dowel pins while installing the oil pump b Install the bearing head assembly with a new gasket on the compressor crankshaft Carefully push the oil pump on by hand ensuring that the thrust washer remains on the dowel pins the tang on the end of the drive segment engages the slot in the crankshaft and the oil inlet port on the pump is aligned with the oil pickup tube in the crankcase The pump should mount flush with the crankcase c Align the gaske
141. 0077 02 5 7 84 785 A id 1 m 2 18 LL 8 Herse X Mu P 21 0 9 5 abe g PD8 1100 85v A 23 6 116 3992 Q PD3 2 NA 10 cui 20120 1 xX P VIO x 20 BLK A 2 3H amp x 5 0 130 17 2 QE PNK pe 225 PD6 L1140 EMP1 s u PD14 L115CI cMe2 PM ory PD9 0 160 HTT wT 2 SAT ee UV lt PA 0180 0 186 5 conre SIDE N l PE10 2200 5Mv cov 105 PD 210 4 m c 1 C lt KEYWAY L SIDE H renl NANNI Io dg SEP s BE Tel lei qmm ey 11213 88 88 588 345 213 Il cnp ICF 8 3 onN BRE BL CLE D B 2 E 8 2 o 9 9 99 990 p parrer el ceat gt 9 20 28 28 2 gt MODULE lt 5 24 20 Sal 28 38 5 8 8 s BATTERY 58 IB 022 RED 3 7 cB23 alf qus 8 z9 SOS D SSE 5 068 69NT35 8774 REV UV CHT CDV Figure 5 22 Electrical Wiring Diagram Model 69NT40 444 11 Sheet 2 of 2 5 45 C12
142. 1 8 PH LOGIC BOARD he s PA pp PG 1 2 314 1516 7 8 9 7 29 7 2119 8 24 1 22 2 13 14 16 6 5 6 1 2 R L 7 ED CONMUNICATIONS Pu 47 Fr INTERFACE DISPLAY ASSEMBLY rr MODULE PF etl 2 ANNUNCIATOR T X 3 e 8 m B amp 5 HRS 0 B 6 L I 17 ARTWORK t 69 735 8694 REV 4 Figure 5 23 Electrical Wiring Schematic Model 69NT40 444 10 Sheet 2 of 2 5 47 SU 21 22 TB3 ENP2 2 GRD 99 PQQ ir Qe e 0900 OOS 99999 99996 QOD BLU 2 F6 mee ISPARE O SPARE O O F38 1 FROM CIB PROVISION FOR OPTION BLK Pi a gt 2 bs VSA3 M B CF21 VSL3 23 12 815 GRD 1 ECHO 989 282 82 zin gt
143. 11 26 Ipm 3 7 gpm 3 Turn refrigeration unit circuit breaker s and the start stop switch ON position 1 4 Units equipped with a DataCORDER Trip start date is activated by simultaneously holding both Trip Start and Hours Since Last Trip Start keys 5 Refer to section 2 3 after unit is running b Stopping the Unit Turn the start stop switch to position 0 OFF position 2 3 AFTER STARTING INSPECTION a Check rotation of condenser and evaporator fans b Check compressor oil level Start microprocessor Inspection Refer to section 1 13 6 2 1 2 4 UNIT OPERATION 2 4 1 Cooling Controller Set Below 10 C 14 F NOTES 1 On Model 69NT40 units the suction solenoid valve SSV opens to increase the refrigerant flow rate and cooling capacity at 109 14 F unless SSV override is activated 2 Inthe frozen range the suction modulation valve is 100 open 3 quench solenoid valve will not be energized at this time as the suction modulation valve position is greater than 40 open 4 Some Models have thermostatic expansion quench valve To see which Models have a solenoid quench valve refer to Section 5 5 Setting the controller below 109 14 F on units with two speed motors will place the motors in low speed contactor ES energizes When the return air temperature decreases to 0 2 C 0 4 F below set point relays TC and TN de energizes
144. 12 13 14 16 18 17 15 CONTROLLER PG R P6 DISPLAY ASSEMBLY PF ANNUNC IATOR CHARGER BOARD BATTERY PD PH 1 0 BOARD R PH LOGIC BOARD PA 1 2 3 4 5 5 7 8 8 EE PC 4 17 11 20 21 19 8 24 1 22 2 13 3 18 5 23 9 10 14 16 D PP3 1 2 3 4 5 6 7 81 1 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 9 1 2 5 27 6 3 4 8 B 5 5 1 2 3 4 ARTWORK 69 35 8114 REV e COMMUNICATIONS INTERFACE MODULE Figure 5 11 Electrical Wiring Schematic Model 69NT20 274 Sheet 2 of 2 5 23 10 11 12 18 14 15 16 17 18 19 f rr Cc 21 EF22 ES21 522 OPTION TB3 1 GRD or EMG I EF22 I EF23 522 523 814 EMP2 EMG Or EM2 460 3 60
145. 19 TV CONTRO R RELAYCLOW SPEED EVAP L7 UV COMPRESSOR UNLOADER SOLENOID R22 OPTION JY UVT COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTION WATER PRESSURE SWITCH Figure 5 39 Electrical Wiring Schematic Model 69NT40 444 16 Sheet 1 of 2 5 78
146. 2 8124 REV A 9 35 1 ary xx z WHT GRN TEMPERATURE CONTROLLER SEES ds RA BLU LOGIC BOARD 71 zegg WHT RED 5 BLKK B ERES Bn S amp P wT PF sees HR23 ICR RED 0 5588 uu 3 2 GRN OPH 10 lt AMD 444 223 _ PR DIGITAL DISPLAY SPARES FROM 5 a GRYK 5 Bii KD BANK ORG A SHIELDA TANTS C mE Pe 1 0 BOARD RRS 5 183 R Ux 2 1 RTS aya 4 a G 3 5 5 C11 CB21 Gs TH
147. 22 IHRE ero 18 oe e ea E EE PTIONAL UE REM ORA 51 o 28 24 28 29 us ee ts PEL A 25 25 lt 50 5 amp lt 5 2 71 vsci PLATE 69NT35 9853 ARTWORK B9NT35 8324 REV Figure 5 16 Electrical Wiring Diagram Model 69NT40 444 6 Sheet 2 of 2 5 33 C12 K9 L8 N7 08 F8 Q8 Q9 AS B6 C14 F L9 N4 ES D18 E18 L8 68 K11 E12 G4 H10 816 016 K7 K11 K12 618 F14 H18 110 E6 H18 J 28 611 18 SYMBOL AMBS C CB COV CF CHT LEGEND DESCRIPTION AMBIENT SENSOR COMPRESSOR CONTACTOR CIRCUIT BREAKER 460V CAPILLARY DE SUPERHEATER VALVE R22 OPTION CONDENSER FAN CONTACTOR CYLINDER HEAD THERMOSTAT R22 OPTION COOL LIGHT CONDENSER FAN MOTOR COMPRESSOR MOTOR COMPRESSOR SUCTION SENSOR CURRENT TRANSFORMER DEFROST HEATER BOTTOM LEFT DEFROST HEATER BOTTOM RIGHT DEFROST HEATER TOP LEFT DEFROST HEATER TOP RIGHT DEFROST LIGHT DRAIN PAN HEATER DEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR EVAPORATOR FAN MOTOR FUSE FULL LOAD AMPS HIGH PRESSURE SWITCH HEATER CONTACTOR HEAT TERMINATION THERMOSTAT INTERROGATOR CONNECTOR IN LINE CONNECTOR R22 OPTION INTERNAL PROTECTOR IN RANGE LIGHT MANUAL DEFROST SWITCH POTENTIAL TRANSFORMER QUENCH VALVE RI8BON CABLE REMOTE MONITORING RECEPTACLE RETURN RECORDER SENSOR RETURN TEMPERATURE SENSOR SOLENOID MODULATING
148. 248 ire 5 um Hoo Os 5 e e Sheet 1 of 2 5 8 230 3 60 Figure 5 4 Electrical Wiring Diagram Model 69NT40 444 1 REV ARTWORK 69NT35 7744 N wren E 11 pour 5555 WHTZBLU DELK A 238 LOGIC BOARD a BRN 2855 WHT RED B ANNUNCI ATOR AME ee RED D 855 WHT H 3 2 1 GRN ABCD 104 lt
149. 30 seconds after the last pressing of the Enter key Below is an explanation of all Function codes Revised 8 6 93 Table 1 4 Function Code Assignments FUNCTION CODE DATA Display Only Functions CdOO Alarm List 01 Suction Modulation Valve Opening 96 902 Quench Valve Open Closed Cd03 Suction Solenoid Valve Open Closed 04 Line Current Phase CdO5 Line Current Phase B CdO6 Line Current Phase C CdO7 Supply Voltage Supply Frequency 09 Ambient Air Temperature Cd10 Compressor Suction Temperature eCdii Compressor Discharge Temperature eCd12 Saturated Condenser Temperature eCdi3 Compressor Discharge Pressure 14 Future Expansion Cd15 Future Expansion 916 Compressor Motor Hour Meter eCdi7 Hours Since Last Trip Start 18 Software Revision Number eCdi9 Serial First 4 of 8 eCd20 Serial Second 4 of 8 eCd21 USDA 1 Probe Temperature eCd22 USDA 2 Probe Temperature eCd23 Secondary Return Air Temperature USDA Cd24 Secondary Supply Air Temperature Cd25 Time Remaining Until Defrost Display Select Functions Cd26 gt Defrost Interval Cd27 Temperature Units C or F Cd28 Failure Action Cd29 In Range Tolerance Cd30 Stagger Start Offset Time Cd31 Current Limit Cd32 Dehumidification Control Optional Codes that are NOT APPLICABLE for some units Code 00 Alarm List Display Selection See Table 1 3 and Table 1 4 This process will allow
150. AND MOTOR ASSEMBLY WARNING Do not open condenser fan grille before turning power OFF and disconnecting power plug NOTE The replacement motor should be degreased and sprayed with a coat of Tectyl before installing in unit Install replacement coil and solder connections The condenser fan rotates counterclockwise viewed from front of unit and pulls air through the the condenser coil and discharges horizontally through the front of the unit a Open condenser fan screen guard b Loosen square head set screws 2 on fan Thread sealer has been applied to set screws at installation Then disconnect wiring from motor junction box CAUTION Take necessary steps place plywood over coil or use sling on motor to prevent motor from falling into condenser coil c Remove motor mounting hardware and replace the motor It is recommended that new locknuts be used when replacing motor Connect wiring per wiring diagram d Install fanloosely on motor shaft hub side in Install venturi Apply Loctite to fan set screws Adjust fan within venturi so that the outer edge of the fan projects 7 9 mm 5 16 out from edge of venturi Spin fan by hand to check clearance e f Apply power to unit and check fan rotation If fan motor rotates backwards reverse wires 5 and 8 418 RECORDING THERMOMETER PARTLOW CAUTION The inside mechanism of the control particularly the inside of the element housing should neve
151. BLU oe OR 12 22 83 380 3 50 lt BRN Mz lt cRN YEL 22 5 24VAC TB13 n 4 54 mE an aE E Je Q a a 5 TB o 1 2 1 3 5 F3A F 5 6 AMP AMP m c 4 8 9 15 11 5256 poz 20 o 170 0 _ O 1 ES 3 11 CHT 2 21 1 12 O lt lt 2 Pe TN 22 2 O19 ES 23 N Plc P2 1 PD18 311 4 1 ET 2 12 1 Buc us TH STS TS Ssv PD17 2 PRI tics TB DcBA DC BA 0 0 OTT ir T SU MDS DEFROST SIGNAL so O4 q pe USDA BATTERY MODULE 9 f 2 2 SMV 1 1 z TB20 19 LL I 3 3 t AMP 1 2 374 5 6 eleh a s 191112131 41516 CONTROLLER T70 BOARD LOGIC BOARD 1 2 5 7 6 3 4 8 B PA pp PS mAn a PG 112 3141518 222 1331815 23 9 1014 5161 2 314 R T 3 1 COMMUNICATIONS PJ PG I i DISPLAY ASSEMBLY ABCD 1 PF AA A 3 ANNUNC I ATOR X 3 AB CODE EIE 4 ICR ICF ef g 9 9 9 E s lt o D B 7 L e 3 ARTWORK PLATE FOR REORDERING SPEC 89NT35 8704 REV 69NT35 1877 CTD P N 6 20 373 127 Figure 5 45 Electrical Wiring Schematic Model 69NT40 444 18 Sheet 2 of 2 5 91 Revised 8 6 93
152. Bw r c 40 1 89 35 gs 2 00 30 34 2 12 28 33 2 23 26 32 2 35 24 31 2 47 22 30 2 60 20 29 2 93 18 28 3 28 16 27 3 66 14 26 4 06 12 24 4 49 10 23 4 94 8 22 5 41 6 21 5 92 4 20 6 45 2 19 7 02 0 18 7 61 2 17 8 24 4 16 8 90 6 14 9 59 8 13 10 32 10 12 11 08 12 11 11 89 14 10 12 73 16 9 13 60 18 8 14 53 20 7 15 49 22 6 16 49 24 4 17 54 26 3 18 64 4 25 Table 4 7 Manual Override Operation of Microprocessor MODE STEP OPERATION DISCONNECT WIRE JUMPER WIRE PD14 to TB15 from TB15 TB15 to CFC1 Full Cooling PD2 to TB7 from TB7 TB7 to WARNING Make sure power to unit is OFF CB 1 amp CB 2 and power plug s disconnected before working inside the control box CAUTION Overheating and cycling of heaters by HTT will result if unit is left in a defrost condition step 4 after all frost has been melted from the evaporator coil and water ceases running from the drain hose NOTES l If microprocessor controller alarm functions remain operational manual override jumpering will result in false alarms being indicated 2 Defrosting will only occur when step 4 alone is performed steps 1 2 amp 3 interrupted and prior operation has been at frost forming temperatures 3 When performing the emergency jump bypass of the microprocessor the unit may still be started stopped using start stop switch ST 4 26 SECTION 5 ELECTRICAL WIRING SCHEMATIC AND
153. CF One Speed Evaporator Motor Relay EF Two Speed Evaporator Motor Relay EF Two Speed Evaporator Motor Relay ES Defrost Relay DR Heater Relay HR Quench Solenoid QV INDICATING LIGHTS Cool Defrost In Range Heat POWER CIRCUIT Compressor Condenser Fan Motor Heaters Evaporator Fan Motors CONTROL CIRCUIT Compressor Contactor C Condenser Fan Motor Con tactor CF One Speed Evaporator Motor Relay EF Two Speed Evaporator Motor Relay EF Two Speed Evaporator Motor Relay ES Defrost Relay DR Heater Relay HR Quench Solenoid QV INDICATING LIGHTS Cool Defrost In Range Heat POWER CIRCUIT Compressor Condenser Fan Motor Heaters Evaporator Fan Motors Table 2 1 Electrical Control Positions Above 10 C 14 F COOLING HOLDING Dehumidifica HEATING DEFROST ZONE tion Energized De energized Energized De energized De energized Energized De energized Energized De energized De energized Energized Energized Energized Energized De energized Energized at set points above 10 C 14 F gt De energized De energized at set points above 10 C 14 F De energized De energized De energized De energized Energized De energized De energized Energized Energized Energized Refer to paragraph De energized Refer to paragraph De energized De energized 1 13 4 Code 02 1 13 4 Code 02 ON OFF ON OFF OFF OFF OFF OFF OFF ON On If In Range Refer to paragraph 1 13 4 Cod
154. COMMUNICATIONS INTERFACE MODULE CONDENSER FAN MOTOR COMPRESSOR MOTOR COMPRESSOR DISCHARGE SENSOR COMPRESSOR SUCTION SENSOR CONDENSER SATURATION SENSOR CURRENT TRANSFORMER OEFROST HEATER BOTTOM LEFT DEFROST HEATER BOTTOM RIGHT OEFROST HEATER TOP LEFT DEFROST HEATER TOP RIGHT DRAIN PAN HEATER DEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR HIGH SPEED EVAPORATOR FAN MOTOR EVAPORATOR FAN CONTACTOR LOW SPEED FUSE FUSE TRANSFRESH FULL LOAD AMPS HUMIDITY CONTROL SWITCH HIGH PRESSURE SWITCH HEATER CONTACTOR HEAT TERMINATION THERMOSTAT INTERROGATOR CONNECTOR INLINE CONNECTOR R 22 OPTION INTERNAL PROTECTOR MANUAL DEFROST SWITCH PROBE PLUG PROBE RECEPTACLE USDA POTENTIAL TRANSFORMER QUENCH VALVE RIBBON CABLE REMOTE MONITORING PLUG RETURN RECORDER SENSOR RETURN TEMPERATURE SENSOR SOLENOID MODULATING VALVE SUPPLY RECORDER SENSOR SUCTION SOLENOIO VALVE START STOP SWITCH SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION CONTROLLER RELAY COOLING TRANSFRESH COMMUNICAT ON CONNECTOR CONTROLLER RELAY HIGH SPEED EVAP TRANSFRESH CONTROLLER CONTROLLER RELAY IN RANGE CONTROLLER RELAY HEATING CONTROLLER RELAY CONDENSER FAN CONTROLLER RELAY QUENCH TRANSFORMER TRANSFRESH REAR CONNECTOR TRANSFRESH REAR CONNECTOR CONTROLLER RELAY SUCTION SOLENOID VALVE CONTROLLER RELAY LOW SPEED EVAP COMPRESSOR UNLOADER SOLENOID R22 OPTION COMPRESSOR UNLOADER SOLENOID THERM
155. DIAGRAMS 5 1 INTRODUCTION This section contains Electrical Wiring Schematics and Diagrams covering the Models listed in Table 1 1 The following general safety notices supplement the specific warnings and cautions appearing elsewhere in this manual They are recommended precautions that must be understood and applied during operation and maintenance of the equipment covered herein WARNING Beware of unannounced starting of the evaporator and condenser fans Do not open condenser fan grille before turning power OFF and disconnecting power plug WARNING Do not attempt to remove power plug s before turning OFF start stop switch ST unit circuit breaker s and external power source Make sure the power plugs are clean and dry before connecting to any power receptacle WARNING Make sure power to unit is OFF and power plug disconnected before replacing the compressor WARNING Do not use a nitrogen cylinder without a pressure regulator Do not use oxygen in or near a refrigeration system as an explosion may occur WARNING Always turn OFF the unit circuit breaker CB1 and disconnect main power supply before working on moving parts WARNING Before servicing unit make sure the unit circuit breaker CB1 and the start stop switch are in the OFF position Also disconnect power plug and cable WARNING Make sure power to unit is OFF and power plug disconnected before removing capacitor S CAUTION When doing any arc welding on
156. E12 De ANUAL DEFROST SWITCH G4 PT POTENTIA TRANSFORMER H10 QV QUENCH VALVE B16 G16 R RIBBON CABLE KT2 LY RM REMOT ONITORING RECEPTACLE RRS RETURN RECORDER SENSOR 618 RTS RETUR MPERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE 8 SRS SUPPLY RECORDER SENSOR E6 ST START STOP SWITCH 8 STS SUPPLY MPERATURE SENSOR B TERMINAL BLOCK CONNECTIO JY CONTRO R RELAY COOLING 9 CONTRO RELAY CHIGH SPEED EVAP 2 IS TH CONTRO RELAY CHEATING T CONTRO R RELAY CCONDENSER FAN 011 CONTRO RELAY CQUENCH I4 TR TRANSFORMER E11 TS CONTRO RELAY SUCTION SOLENOID VALVE 110 CONTRO R RELAY CLOW SPEED EVAP UV COMPRESSOR UNLOADER SOLENOID R22 OPTION UVT COMPRESSOR UNLOADER SOLENOID THERMOSTAT CR22 OPTION Figure 5 31 Electrical Wiring Schematic Model 69NT20 274 2 Sheet 1 of 2 5 62
157. FROM gues DIGITAL DISPLAY SPARES FRO RED GRNK PG TANK E APAT ORG m TB17 9 RED UVT Pe eo wt 1 0 BOARD T83 6 R TB4 BR 20425 GHE vw RTS 1B16 R L BR z 31 y GHE B 5 5 5 C11 CB21 WHT PES gt BLK 12 C12 CB22 UB TE C13 CB23 13 Y maga ge CT Qu m o Mw Sos lt ILE 512 518 Do 1 21 E lt bd F6 2 KP 12 I HCS1 Hr 3 l enp IL ler PC 077 SHLD is Pa 4 2 9 71 1 Na NIN 20229 5 HPs SHLD 8 16 20 24 PD4 H 6 0 0 BRO 02 0 7 01 785 A f i 1 HPS 0 8 Herse 8 pp a P0210 9 D av M J JJ 87 5 0100 96 IB 4 23 0 112 5 3992 o5 pow IRX2 PT5 0130 P 17 E A 2 GH e 06 1 0 142 EMP1 reo Ho T ORN RN 014 4 0150 4 2 GRY U n 7 9 8 162 ILCI wT OJO UvT ci Uv lt lt 2 510 18 119 5 BN l PE10 0 200 smv 7 cpv Mos 4 lt 2 5 0210 DF SIGNAL meo C lt l Om KEYWAY SIDE RED lero
158. I eX lt gt 2 8 8 k 8194 Wao 122 s eq eh vip ovas s 5 EG 1 s eme er eee 3 aes 5217 g o Y Logo lt 5 Qu 1 ada 7 2 Mee o _ Koza PX a 1 1 1 open 5 N BE PP Oe 122037 ss z I 5 2 2 2 5 4 in gt 460 3 60 230 3 60 ARTWORK 69NT35 9954 REFA N Figure 5 50 Electrical Wiring Diagram Models 69NT40 441 21 amp 69NT40 444 21 Sheet 1 of 2 5 100 Revised 8 6 93 CN DHBL vSK4 A TEMPERATURE CONTROLLER HR21 tue ANNUNCIATOR LOGIC BOARD PF Laos gone OBO DPH DIGITAL DISPLAY 200 55 B Gaze ILCI 8 BRN OOO 2 1 0 BOARD C TB3 R TB4 9 BR RTS TB16 R L TB6 BR al a ES N Ico
159. K1g RRS RETURN RECORDER SENSOR 618 5 RETURN TEMPERATURE SENSUR 14 SMV SOLENOID MODULATING VALVE H18 SRS SUPPLY RECORDER SENSOR 110 55 SUCTION SOLENOID VALVE E6 ST START STOP SWITCH H18 STS SUPPLY TEMPERATURE SENSOR TB TERMINAL BLOCK CONNECTION J TC CONTROLLER RELAY COOLING J8 TE CONTROLLER RELAY HIGH SPEED TF TRANSFRESH 611 CONTROLLER RELAY IN RANGE I9 TH CONTROLLER RELAY HEATING 18 TN CONTROLLER RELAY CONDENSER FAN 010 CONTROLLER RELAY QUENCH 14 TR TRANSFORMER E11 TS CONTROLLER RELAY SUCTION SOLENOID VALVE 19 TV CONTROLLER RELAY LOW SPEED EVAP EB WATER PRESSURE SWITCH Figure 5 1 Electrical Wiring Schematic Models 69NT40 444 amp 444 2 Sheet 1 of 2 5 2 POWER PLUG 10 4 POWER CABLE 460 3 60 OR 380 3 50 12 13 n 5 5 6 TB2 TQ PD17 PD21 PN USDA BATTERY MODULE 2 1 3 CHARGER BOARD 1 PL 1 2 3 4 5 5 7 CONTROLLER PM s 2 1 4 sTe PG 1234 5 6 7 3 PG DISPLAY ASSEMBLY PF ANNUNC I ATOR 1 80 1 22 TC PD2 1 020 TN PD14 PD13 TE PD6 0 TV TH 09 PD10 TBS TS TB10 PD17 RM RM 13 12 T
160. L9 N4 HR HEATER 9 HTT HEAT TERMINATION THERMOSTAT 018 18 1 INTERROGATOR CONNECTOR 7 8 8 68 6 INTERNAL PROTECTOR E12 MDS MANUAL DEFROST SWITCH H4 PT POTENTIAL TRANSFORMER H10 Qv QUENCH VALVE 816 616 R18BON CABLE K19 RRS RETURN RECORDER SENSOR 618 RTS RETURN TEMPERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE H18 SRS SUPPLY RECORDER SENSOR 110 55 SUCTION SOLENOID VALVE ST START STOP SWITCH H18 STS SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION 17 TC CONTROLLER RELAY COOLING J8 TE CONTROLLER RELAY HIGH SPEED 611 TI CONTROLLER RELAY IN RANGE 19 TH CONTROLLER RELAY HEATING 18 TN CONTROLLER RELAY CONDENSER FAN D10 TQ CONTROLLER RELAY QUENCH J4 TR TRANSFORMER 03 TRANS TRANSFORMER AUTO 230 460 En TS CONTROLLER RELAY SUCTION SOLENOID VALVE 19 CONTROLLER RELAY LOW SPEED EVAP Figure 5 5 Electrical Wiring Schematic Model 69NT40 444 3 Sheet 1 of 2 5 10
161. MALFUNCTION Unit will not start Circuit breaker CB 2 tripped Step up transformer internal protector open Step up transformer defective Power source not turned ON REFERENCE SECTION 4 2 4 4 Open 4 26 4 2 4 3 4 26 c 4 26 4 26 4 26 4 26 4 2 4 3 4 26 4 26 4 26 4 26 4 21 Check Check Check 4 22 4 22 Check SECTION 4 SERVICE 4 1 REMOVING THE REFRIGERANT NOTE To avoid damage to the earth s ozone layer use a refrigerant recovery system whenever removing refrigerant 1o Service any High and Low Side Refrigeration Component Store the refrigerant charge in an evacuated container Attach hose line to liquid line valve to remove liquid refrigerant 4 40 REFRIGERANT LEAK CHECKING a The recommended procedure for finding leaks in a system is with a halide torch or electronic leak detector Testing joints with soapsuds is satisfactory only for locating large leaks b Ifthesystemis without refrigerant charge the system with refrigerant to build up pressure between 2 1 to 3 5 kg cm 30 to 50 psig Remove refrigerant drum and leak check all connections NOTE It must be emphasized that only the correct refrigerant drum be connected to pressurize the system Any other gas or vapor will contaminate the system which will require additional purging and evacuation of the high side discharge of the system c Remove refrigerant using a refrigerant recovery system and repair
162. Model 69NT40 444 18 Sheet 1 of 2 5 90 10 15 1 J K 11 4 POWER POWER PLUG CABLE m t 8 k Ma BI pean B2 460 3 60 S2 lt
163. POTENTIAL TRANSFORMER QUENCH VALVE RIBBON CABLE RETURN RECORDER SENSOR RETURN TEMPERATURE SENSOR SOLENOID MODULATING VALVE SUPPLY RECORDER SENSOR SUCTION SOLENOID VALVE START STOP SWITCH SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION CONTROLLER RELAY COOLING CONTROLLER RELAY HIGH SPEED EVAP CONTROLLER RELAY IN RANGE CONTROLLER RELAY HEATING CONTROLLER RELAY CONDENSER FAN CONTROLLER RELAY QUENCH TRANSFORMER CONTROLLER RELAY SUCTION SOLENOID VALVE CONTROLLER RELAY LOW SPEED EVAP Figure 5 9 Electrical Wiring Schematic Model 69NT40 454 Sheet 1 of 2 5 18
164. Push the piston rods up as far as they will go without having the piston rings extend above the cylinders e If necessary remove the oil return check valve Inspect it for check valve operation flow in one direction only Replace assembly if its check valve operation is impaired See Figure 4 5 2 3 iN Oil Pressure Relief Valve Oil Return Check Valve Oil Suction Tube Capscrew Connecting Rod and Cap Assembly Qr ox mc Figure 4 5 Bottom Plate Removed CAUTION The copper tube which connects to the oil suction strainer extends out the bottom with the bottom plate removed Take precautions to avoid bending or breaking it while changing crankcase positions f There are two types of oil pumps vane and gear See Figure 4 3 to identify which oil pump is used then follow the correct procedure below Vane Oil Pump 1 Remove the oil pump cover capscrews See Figure 4 2 This will free the oil feed guide retaining spring cover gasket and the oil feed guide See Figure 4 6 Hold piston to prevent shaft from turning if necessary 2 Remove the oil pump drive segment screws and lockwashers before the bearing head is removed See Figure 4 6 Unscrew the bearing head capscrews remove the bearing head and then remove the bearing head gasket 3 With the pump end bearing head removed from the compressor remove the plunger retaining rings with
165. R RELAY CSUCTION SOLENOID VALVE L6 Cl HOUR METER 110 TV CONTRO R RELAY CLOW SPEED EVAP L7 UV COMPRESSOR UNLOADER SOLENOID R22 OPTION K7 UVT COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTION Figure 5 29 Electrical Wiring Schematic Model 69NT40 454 2 amp 454 3 Sheet 1 of 2 5 58 lt PLUG ORALE 3 cel e Bd 2S 7
166. SENSOR I18 CPSS COMPRESSOR SUCTION SENSOR J18 CSAS CONDENSER SATURATION SENSOR J2 CT CURRE TRANSFORME Q5 DHB DEFROS EATER BOTTOM LEFT PS DHBR DEFROS EATER BOTTOM RIGHT PS DHTL DEFROS EATER TOP LEFT 05 DHTR DEFROS EATER TOP RIGHT J12 DL DEFROST LIGHT 5 DPH DRAIN PAN HEATER C12 DTT DEFROST TERMINATION THERMOSTAT 3 EVAPORATOR CONTACTOR CHIGH SPEED D9 F9 Q8 Q9 EM EVAPORATOR FAN MOTOR K9 L10 07 ES EVAPORATOR FAN CONTACTOR CLOW SPEED 5 14 FUSE FLA FULL LOAD 5 F7 PS IGH PRESSURE SWITCH N4 R EATER CONTACTOR E10 TT EA ERMINATION THERMOSTAT E18 C INTERROGATOR CONNECTOR L8 ILC IN LINE CONNECTOR 22 OPTIOND CS FS P INTERNAL PROTECTOR K11 IRL IN RANGE LIG E12 MDS MANUAL DEFROST SWITCH H4 POTENTIAL TRANSFORMER B17 G16 R RIBBON CABLE 11 12 RM REMOTE MONITORING RECEPTACLE K18 RRS RETURN RECORDER SENSOR G18 RTS RETURN TEMPERATURE SENSOR 14 SMV SOLENOID MODULATING VALVE 18 SRS SUPPLY RECORDER SENSOR 111 SSV SUCTION SOLENOID VALVE EG ST START STOP SWITCH CCIRCUIT BREAKER 18 STS SUPPLY TEMPERATURE SENSOR TB TERMINAL BLOCK CONNECTION I TC CONTROLLER RELAY CCOOLING J9 CONTROLLER RELAY CHIGH SPEED EVAP G11 TI CONTROLLER RELAY CIN RANGE2 10 TH CONTROLLER RELAY CHEATING 9 T CONTROLLER RELAY CCONDENSER FAND J4 TR TRANSF
167. T 1 7 121 7 E JE X a F3C pL amp C 1 2 3 4 5 6 7 0 1 12 13 14 16 9 4 5 8 7 8 9 1 12 1314 151617 1819 24 CONTROLLER 1 0 BOARD A LOGIC BOARD ERIS 1215 1 348 PG 112 245 6 e s 21198 24 1 22 2 123 18 5 23 16 6 COMMUNICATIONS INTERFACE DISPLAY ASSEMBLY MODULE H L ABCD PE ret 1 5 ANNUNC IATOR X X 3 8 0 ata o o 5 ME b amp 8 L a RRS 12 3115 1213112 I e ARTWORK t gt 69NT35 8524 REV Figure 5 19 Electrical Wiring Schematic Model 69NT40 444 9 Sheet 2 of 2 5 39 10 11 12 18 14 15 16 17 18 19 1 D 7 tor E N ane CF21 G2 gt
168. VALVE SUPPLY RECORDER SENSOR SUCTION SOLENOID VALVE START STOP SWITCH SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION CONTROLLER RELAY COOLING CONTROLLER RELAY EVAPORATOR FAN CONTROLLER RELAY CIN RANGE CONTROLLER RELAY HEATING CONTROLLER RELAY CONDENSER FAN CONTROLLER RELAY QUENCH TRANSFORMER CONTROLLER RELAY SUCTION SOLENOID VALVE COMPRESSOR UNLOADER SOLENOID R22 OPTION COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTION WATER PRESSURE SWITCH Figure 5 17 Electrical Wiring Schematic Model 69NT40 454 1 Sheet 1 of 2 5 34 C D E F G H J K L M N O P Q R 10 4 50 POWER PLUG CABLE CB1 C
169. Y TEMPERATURE SENSOR LOCK CONNECTION RELAY COOLING COMMUNICATION CONNECTOR RELAY EVAP CONTROLLER ELAY IN RANGE LAY HEATING LAY CONDENSER FAN AR CONNECTOR AR CONNECTOR 22 DDD rn rn rn rm ELAY SUCTION SOLENOID VALVE R R R R R H H RR R UNLOADER SOLENOID R22 OPTION U Sheet 1 of 2 5 98 LOADER SOLENOID THERMOSTAT R22 OPTION
170. a minimum of 2 amps failure to do so will cause the alarm This is a display alarm with no associated failure action and will be reset by a proper amp draw of the compressor Alarm 64 DataCORDER Low Battery not applicable for some units Alarm 64 is an indication that the DataCORDER battery is low It is a display alarm and will only be reset by replacement of the battery Alarm 65 Current Limit Alarm 65 is triggered within the current limiting system If the compressor is ON and current limiting procedures cannot maintain a current level below the user selected limit the current limit alarm is activated This alarm is an inactive display alarm and is inactivated by power cycling the unit or changing the current limit via the code select Cd31 00 not applicable for some units This alarm indicates that the memory is almost full and the recorder will soon start to overwrite the oldest data 01 not applicable for some units This alarm indicates that the recorder is overwriting the oldest data This will happen approximately every 55 62 days depending on the number of events that have been stored with the temperature data It is recommended that data be downloaded from the recorder to safe storage at the end of each trip and no later than when a TP00 alarm occurs Otherwise data will be lost NOTE 00 and 01 alarms are reset by trip starting the unit and then pressing the alarm reset and Enter
171. amp 444 2 Sheet 2 of 2 5 5 12 L8 6 D8 F8 07 Q8 AS B6 C14 E L4 LS ES 018 18 C6 C8 F8 68 K11 E12 L1 L17 011 P11 65 H10 816 616 1 J11 J12 K19 618 F14 H18 110 06 H18 G J8 611 H10 18 010 5 E10 EB SYMBOL AMBS LEGEND DESCRIPTION AMBIENT SENSOR COMPRESSOR CONTACTOR CIRCUIT BREAKER 460V CIRCUIT BREAKER 230V FAN CONTACTOR COMMUNICATIONS INTERFACE MODULE COOL LIGHT WHITE CONDENSER FAN MOTOR COMPRESSOR MOTOR COMPRESSOR DISCHARGE SENSOR COMPRESSOR SUCTION SENSOR CONDENSER SATURATION SENSOR CURRENT TRANSFORMER DEFROST HEATER BOTTOM LEFT DEFROST HEATER BOTTOM RIGHT DEFROST HEATER TOP LEFT DEFROST HEATER TOP RIGHT DEFROST LIGHT AMBER DRAIN PAN HEATER DEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR EVAPORATOR FAN MOTOR FUSE FULL LOAD AMPS HIGH PRESSURE SWITCH HEATER CONTACTOR HEAT TERMINATION THERMOSTAT INTERROGATOR CONNECTOR INTERNAL PROTECTOR IN RANGE GREEN MANUAL DEFROST SWITCH PROBE PLUG RTN PROBE RECEPTACLE USDA POTENTIAL TRANSFORMER QUENCH VALVE RIBBON CABLE REMOTE MONITORING PLUG RETURN RECORDER SENSOR RETURN TEMPERATURE SENSOR SOLENOID MODULATING VALVE SUPPLY RECORDER SENSOR SUCTION SOLENOID VALVE START STOP SWITCH SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION CONTROLLER RELAY COOLING CONTROLLER RELAY EVAP CONTROLLER RELAY IN RANGE CONTROLLER RELAY HEATING CONTROL
172. condition If the control probe remains out of range for more than 5 minutes the heaters will be de energized to allow the system to recover The out of range timer starts as soon as the temperature exceeds the in range tolerance value set by code Cd29 Cooling capacity reduction by modulation is the same as described for the conventional operating mode when any of the above 4 conditions are invalid With set points below 10 C 14 operation is the same as previously described for conventional mode heating and dehumidification are locked out b Frozen range below 10 C 14 The return air probe is used for control and is so indicated by the LED on the display board The Frozen temperature range is not sensitive to minor temperature changes The method of temperature control employed in this range takes advantage of this fact to greatly improve the energy efficiency of the system Temperature control in the Frozen range below 10 14 is accomplished by cycling the compressor on and off as the load demand requires If the return air temperature in the container drops 0 2 0 4 below the set point temperature the compressor is cycled off When the temperature is greater than 0 2 C 0 4 above set point 6 minute time delay has been met the compressor will restart The system will always operate at full capacity which means both the solenoid modulating SMV and suction solenoid S
173. flow Evaporator fan motor internal protector open Evaporator fan motor s defective Evaporator fan s loose or defective REFERENCE SECTION 4 16 or 4 21 4 17 4 17 4 4 4 12 Check Open 4 10 4 2 4 4 4 26 3 10 3 6 4 14 4 27 Tighten 4 5 4 5 3 11 4 8 Check 4 14 4 17 4 14 4 17 4 23 Check 3 6 4 13 4 14 4 14 4 27 4 14 INDICATION TROUBLE POSSIBLE CAUSES 3 11 EXPANSION VALVE MALFUNCTION Low suction pressure with high superheat High suction pressure with low superheat Liquid slugging in compressor Fluctuating suction pressure Low refrigerant charge External equalizer line plugged Wax oil or dirt plugging valve or orifice Ice formation at valve seat Superheat too high Power assembly failure Loss of element bulb charge Broken capillary Foreign material in valve Superheat setting too low External equalizer line plugged Ice holding valve open Foreign material in valve Pin and seat of expansion valve eroded or held open by foreign material Improper bulb location or installation Low superheat setting 3 12 WATER COOLED CONDENSER OR WATER PRESSURE SWITCH MALFUNCTION High discharge pressure Condenser fan starts and stops Dirty coil Noncondensibles Condenser fan switch CFS If used in position 0 when water is not circulating thru water cooled Condenser Water pressure switch malfunction Water supply interruption 313 STEP UP POWER TRANSFORMER
174. gives air exchange values for an empty container Higher values can be expected for a fully loaded container 69NT40 FRESH AIR MAKEUP AIR FLOW CMH 240 ZERO EXTERNAL STATIC 50HZ T BAR 1 1 2 210 2 5 8 T BAR 3 180 150 120 90 60 30 0 0 10 20 30 40 50 60 70 80 90 100 PERCENT OPEN For 60HZ operation multiply curves by 1 2 a Full Open or Closed Positions Maximum air flow is achieved by loosening the wing nuts and moving the cover to the maximum open position 100 position The closed position is 0 air flow position The operator may also adjust the opening to increase or decrease the air flow volume to meet the required air flow b Air Sampling for Carbon Dioxide CO Level Loosen wing nuts and move cover until the arrow on the cover is aligned with the atmosphere sampling port label Tighten wing nuts and attach a 3 8 tube to the sampling tube If the internal atmosphere content has reached an unacceptable level the operator may adjust the cover opening to meet the required air flow volume to ventilate the container c Reduced Flow for Fresh Air Makeup On some models the air slide is supplied with two adjustable air control disks The fresh air makeup can be adjusted for 15 35 50 or 75 cubic meters per hour CMH The air flow has been established at 60HZ power and 2 1 2 inch bar and with 15mm 6 inch H20 external static above free blow
175. kit following instructions included with kit j Install high pressure switch on compressor k Install compressor and mounting plate in unit 1 Install junction box to compressor and connect all wiring per wiring diagram and then install junction box m Install new gaskets on service valves n Install mounting bolts in service valves and torque to a value of 2 77 to 4 15 mkg 20 30 ft lb o Change filter drier Refer to section 4 10 p Attach two lines with hand valves near vacuum pump to the suction and discharge service valves Dehydrate and evacuate compressor to 500 microns 75 9 cm HG vacuum 29 90 inches Hg vacuum off valves on both lines to pump Fully backseat open both suction and discharge service valves r Remove vacuum pump lines s Start unit and check refrigerant charge Refer to section 4 4 1 b t Checkmoisture liquid indicator for wetness Change filter drier if necessary Refer to sections 4 9 and 4 10 Check compressor oil level per section 4 8 a Add oil if necessary Refer to section 4 8 b 4 6 COMPRESSOR DISASSEMBLY NOTE Removing the press fit stator in the field is not recommended The rotor and stator are a matched pair and should not be separated When disassembling compressor matchmark parts so they may be replaced in their same relative positions See Figure 4 2 for an illustration of the compressor Refer to Table 4 1 and Table 4 2 for
176. only on air cooled operation Refrigerant level on water cooled operation will be normally above sight glass Partially block the condenser coil inlet air starting from the front of the condenser coil Increase the area blocked until the compressor discharge pressure is raised to approximately 12 kg cm2 175 psig Refrigerant should appear at center line of sight glass on the water cooled condenser If not refer to section 4 4 3 Units equipped with air cooled condenser only partially block the condenser coil inlet air starting from the front of the condenser coil Increase the area blocked until the compressor discharge pressure increases to approximately 13 kg cm2 190 psig with the container temperature about 2 C 35 F or 11 kg cm2 160 psig with the container temperature about 18 C 0 F Allow the system to stabilize for 5 minutes of continuous operation maintaining the head pressure at the proper level Proceed to step c c For units with air cooled condenser only check the liquid line sight glass If the sight glass appears clear with no bubbles visible or only occasional intermittent bubbles then the unit has an adequate charge If the sight glass appears to be flashing or bubbles are constantly moving through the sight glass then the unit may have a low refrigerant charge or the filter drier could be partially plugged Refer to section 4 10 If it is determined that the filter drier is not restricted then it will be
177. or when service to the refrigeration unit requires handling and removal of the controller 1 Obtain a grounding wrist strap and a static dissipation mat The wrist strap when properly grounded will dissipate any potential built up on the body The dissipation mat will provide a static free work surface to place and or service the microprocessor controller Note Use a dissipation mat such as the 3M 8501 Static Protective Field Service Kitor equivalent For information write Static Control Systems Division 3m Box 2963 Austin Texas 78769 2963 2 Disconnect power to the unit 3 Attach the ground or clip end of the wrist strap to any exposed metal area on the refrigeration unit frame bolts screws etc 4 Carefully remove the microprocessor controller Do not touch any of the electrical components if possible Place the controller on the static mat If arc welding is to be performed on the unit it is not necessary to remove controller Simply disconnect all connectors from controller and remove ground lead going to I O board 4 20 5 At this point if you are servicing the refrigeration unit you are free to remove the ground strap from your wrist and complete your work 5a Upon completion of your service work put the wrist strap back on and re install the controller into the refrigeration unit 6 If you are replacing the controller do not remove the wrist strap Remove the new microprocessor controller from
178. reaches 0 32 F as shown by a laboratory thermometer Turn power OFF and disconnect power source b Start unit and check air temperature data readout on the microprocessor control panel You should have a reading of 0 C 32 F if not continue on to the following step c Turn unit OFF and disconnect power supply d Remove two capscrews lower the Microprocessor Control Panel e Remove three screws and loosen three other screws to remove cover Item 3 Figure 4 26 f Inthe box there are wires marked supply and return Follow the wire to the plug connector and using the pins of the plug measure the ohms resistance Readings are shown in Table 4 4 4 23 Replacing Temperature Sensor a Turn unit power OFF and disconnect power supply b Cutcable 2 inches from shoulder of defective sensor and discard defective probe c Cutonewire of existing cable 41 mm 1 5 8 shorter than the other wire See Figure 4 19 SENSOR 41mm 1 5 8 SHOULDER 6 35mm Figure 4 19 Sensor d Cut one replacement sensor wire opposite color back 41 mm 1 5 8 e Strip back insulation on all wiring 6 35mm 1 4 CAUTION Do not allow moisture to enter wire splice area as this may affect the sensor resistance f Slide a large piece of heat shrink tubing over the cable and the two small pieces of heat shrink tubing over the wires before adding crimp fittings as shown in Figure 4 20 Slip crimp fitti
179. snap ring pliers As each retaining ring is removed the spring guide vane spring and pump vane may be removed from the vane cylinder in the bearing head See Figure 4 6 4 Push pump rotor out of the bearing head forcing against the rotor with a thumb Force from the bearing side and remove from the opposite side The pump rotor retaining ring will come out with the rotor 5 Anew bearing head complete with oil pump should be obtained from Carrier Transicold as a replacement to eliminate oil pump trouble However if the cause of pump failure can be determined in the field replacement parts may be ordered from Carrier Transicold to repair the pump 1 Oil Pump Cover 9 Retaining Ring 2 Cover Gasket 10 Spring Guide 3 Capscrews and 11 Bearing Head Lockwashers 12 Pump Rotor 4 Oil Pump Drive 13 Oil Feed Guide 5 Rotor Retaining Ring 14 Retainer Spring 6 Pump Vane Oylinder 15 Capscrews and 7 Pump Vane Washers 8 Vane Spring 16 Oil Inlet Passage Figure 4 6 Vane Oil Pump and Bearing Head Gear Oil Pump 1 Remove eight capscrews and remove oil pump bearing head assembly gasket and thrust washer See Figure 4 7 2 lfit was determined that the oil pump was not operating properly the entire oil pump and bearing head assembly must be replaced Replacement parts for the pump are not available 1 Oil Pump amp Bearing Head 2 Thrust Washer Gear Pump Only 3 Oil Pickup Tube 4 Oil Inlet Por
180. suction service valve into the compressor Add oil as necessary Run unit for 20 minutes in cooling and check oil level c Adding Oil to Service Replacement Compressor NOTE The correct oil charge is 4 0 liters 8 5 U S pints Service replacement compressors may or may not be shipped with oil If compressor is without oil Add oil sections 1 3 b and 4 8 b through the suction service valve flange cavity or by removing the oil fill plug See Figure 4 2 Some compressors have the oil plug located on the crankcase at the right or left side of the oil pump d To Remove Oil From an 06DR Compressor 1 Ifthe oil level recorded in step a 3 is above 1 2 of the sight glass oil must be removed from the compressor 2 Close frontseat suction service valve and pump unit down to 1 2 to 1 3 kg cm 2 to 4 psig Frontseat discharge service valve and slowly bleed remaining refrigerant 3 Remove the oil drain plug on the bottom plate of the compressor and drain the proper amount of oil from the compressor to obtain the 1 2 sight glass maximum level Replace the plug securely back into the compressor DO NOT FORGET TO OPEN SUCTION AND DISCHARGE SERVICE VALVES 4 Repeat Step a to ensure proper oil level 4 9 CHECKING OR REPLACING MOISTURE LIQUID INDICATOR When the refrigeration system is operating the moisture liquid indicator provides an indication of moisture in the system The indicator element is highly sensiti
181. termination does not occur within 1 0 to 1 5 hours depending on voltage An alarm will be given of a possible DTT failure When the return air falls to 7 C 45 F the controller checks to ensure defrost termination thermostat DTT closed properly If not a DTT failure alarm is given and the defrost mode is operated off of return temperature sensor RTS The defrost mode will be terminated after one hour by the controller TO CONTROL TRANSFORMER TQ PD21 PD17 TI RM TB14 TC PD2 1020 TN PD14 PD13 TE ES PDI8 31 41 TV EF PD1 31 41 TH PDS D10 RM 13 peg 12 DTT USDA BATTERY MODULE 2 1 3 wl CHARGER F3C PL 1 213 415 6 718 3 10111 12 1314 1618177 15 PD CONTROLLER PH 372 1141516 112131415 5 7 8 3 Energized Circuit TB18 1 2 3 4 5 6 7 81 4110111112 13 14 15 15 17 18 13 20 21 22 23 24 4 17 11 20 7 21 19 8 24 1 22 2 13 3 18 5 23 9 10 14 16 5i HCS TB11 1 TB21 3 DEFROST SIGNAL 1 0 BOARD LOGIC BOARD 9 1 2 5 7 6 3 4 6 De energized Circuit Figure 2 3 Defrost 2 5 CONTROL CIRCUIT Compressor Contactor C Condenser Fan Motor Contactor
182. the start stop switch are in the OFF position Also disconnect power plug and cable a Remove the lower access panel Figure 1 1 by removing the T I R locking device lockwire and mounting screws 4 10 b Determine which heater s need replacing by checking resistance on each heater as shown in section 1 4 e c Remove hold down clamp securing heaters to coil d Liftthe U portion ofthe heater with opposite end down and away from coil Move heater left or right enough to clear the heater end support 4 16 CONDENSER COIL The condenser consists of a series of parallel copper tubes expanded into copper or aluminum fins The condenser coil must be cleaned with fresh water or steam so the air flow is not restricted Fan rotation is counterclockwise when viewed from shaft end of motor WARNING Do not open the condenser fan grille before turning power OFF and disconnecting power plug To Replace Condenser Coil a Store the refrigerant charge in evacuated container by attaching a line to the liquid line valve See Figure 1 3 and refer to section 4 1 b Remove the condenser coil guard c Unsolder discharge line and remove the line to the water cooled condenser if so equipped d Remove coil mounting hardware and then remove the coil f Leakcheckthe coil 4 2 Evacuate the unit per section 4 3 and then charge the unit with refrigerant per section 4 4 1 4 17 CONDENSER FAN
183. the unit or container disconnect all connectors from controller and remove ground lead going to I O board to prevent any damage due to electrostatic discharge 5 1 LEGEND ZONE SYMBOL DESCRIPTION J18 AMBS AMBIENT SENSOR 17 2 COMPRESSOR CONTACTOR 02 CB CIRCUIT BREAKER 460V L8 NE CONDENSER FAN N18 Cl COMMUNICATIONS INTERFACE MODULE G8 06 CM CONDENSER FAN MOTOR 07 03 COMPRESSOR MOTOR 118 CPDS COMPRESSOR DISCHARGE SENSOR 118 CPSS COMPRESSOR SUCTION SENSOR 5 5 CONOENSER SATURATION SENSOR J2 CURRENT TRANSFORMER 05 DHBL DEFROST HEATER BOTTOM LEFT PS DHBR DEFROST HEATER BOTTOM RIGHT PS DHTL DEFROST HEATER TOP LEFT 05 OHTR DEFROST HEATER TOP RIGHT 5 DRAIN PAN HEATER C12 DTT OEFROST TERMINATION THERMOSTAT K9 L8 N7 EF FAN CONTACTOR HIGH SPEED 08 F8 Q8 09 EM EVAPORATOR FAN MOTOR K8 L9 07 ES EVAPORATOR FAN LOW SPEED AS BB C14 F FUSE FLA FULL LOAD AMPS Ju HCS HUMIDITY CONTROL SWITCH F HPS HIGH PRESSURE SWITCH L9 N4 HR ES HTT HEAT TERMINATION THERMOSTAT 018 18 INTERROGATOR CONNECTOR C CB FB GB IP INTERNAL PROTECTOR E12 MDS MANUAL DEFROST SWITCH Ll PP PROBE PLUG RTN 117 011 11 PROBE RECEPTACLE USDA G4 _ POTENTIAL TRANSFORMER H10 Qv QUENCH VALVE 816 616 RIBBON CABLE E11 111 RM REMOTE MONITORING PLUG
184. to Table 1 1 model chart to see which units have a humidistat Two diagnostic alarms are provided for the DataCORDER TPOO This alarm indicates that the memory is almost full and the recorder will soon start to overwrite the oldest data TP01 This alarm indicates that the recorder is overwriting the oldest data This will happen approximately every 55 62 days depending on the number of events that have been stored with the temperature data It is recommended that data be downloaded from the recorder to safe storage at the end of each trip and no later than when a 0 alarm occurs Otherwise data will be lost NOTE 00 and 01 alarms are reset by trip starting the unit and then pressing the alarm reset and Enter key 1 13 8 Communications a DataCORDER Retrieval Interrogation Data retrieval from the DataCORDER can be accomplished with two devices 1 a stand alone DOS base portable computer with appropriate cable and software or 2 the Husky Hunter computer with appropriate cable and software Both are battery operated portable computers main difference between them is that the Husky computer has smaller memory storage and consequently is designed to be used with a desktop PC for downloading data storage and output processing These functions can be performed on the portable computer using floppy disks The main advantage of the Husky is its smaller size weight and superior durability in har
185. valid range from 50 C 58 F to 70 C 158 F This is a display alarm and has no associated failure action Alarm 59 Heat Termination Thermostat HTT Alarm 59 is triggered by the opening of the heat termination thermostat and will result in the disabling of the heater This alarm will remain active until the thermostat resets Alarm 60 Defrost Termination Thermostat DTT Closed Failure Alarm 60 is an indication of a probable failure closed of the defrost termination thermostat DTT It is triggered by the opening of the heat termination thermostat HTT or the failure of the DTT to open within 1 0 to 1 5 hours depending on voltage during defrost 1 20 Alarm 61 Defrost Termination Thermostat Open Failure Alarm 61 is an indication of a DTT stuck open failure It is activated if DTT is not sensed closed 30 minutes after power up or 30 minutes of compressor run time with primary return temperature below 7 C 45 F Alarm 62 Heater Alarm 62 is the heater alarm caused by improper amperage resulting from heater activation deactivation Each phase of the power source is checked for proper amperage This alarm is a display alarm with no resulting failure action and will be reset by a proper amp draw of the heater Alarm 63 Compressor Motor Alarm 63 is triggered by improper current draw increase decrease resulting from compressor turn on off compressor is expected to draw
186. valve connection and rotate valve and tubing enough to clear compressor Remove valve and tubing Replace defective modulating solenoid valve being careful to wrap body of replacement valve with a wet cloth while brazing The coil need not be removed 4 Install new suction service valve gasket and install bolts in suction service valve Torque to a value of 2 77 to 4 15 mkg 20 to 30 ft Ib 5 6 Dehydrate and evacuate unit section 4 3 and then add refrigerant charge per section 4 4 2 4 06 THERMOSTATIC EXPANSION VALVE The thermal expansion valve is an automatic device which maintains constant superheat ofthe refrigerant gas leaving the evaporator regardless of suction pressure The valve functions are a automatic response of refrigerant flow to match the evaporator load and b prevention of liquid refrigerant entering the compressor Unless the valve is defective it seldom requires any maintenance Solder all connections and leak check same 4 5 7 1 Power Assembly 5 Cage Assembly 2 Body Gaskets 6 Body Flange 3 Seat Gasket 7 Body Flange Screws Bulb Figure 4 24 Thermostatic Expansion Valve a Removing Expansion Valve 1 Store the refrigerant in an evacuated container by attaching a hose to the liquid line valve 2 Remove insulation Presstite from expansion valve bulb and power assembly and then remove thermal bulb from the suction line 3 Loosen flare nut and disconn
187. 013 PDIB EF PD1 31 HTT TB16 TH PD9 010 41 TB3 1 1 021 5 10 20171 7817 TI TB18 L3 PES 12 Li TB6 1 3 TB21 DEFROST SIGNAL USDA BATTERY MODULE 2 1 3 SMV TB20 9 CHARGER BOARD F3C 1 PL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 165 18 17 15 1 2 3 4 5 56 7 8 91 10 11 12 13 14 15 15 17 18 13 20 21 22 23 24 PD CONTROLLER PH 1 0 BOARD R LOGIC BOARD 19 1 1 4171120 7 21 19 8 24 1 22 2 13 3 18 5 23 9 10 14 16 6 2 3 4 5 6 7 8 4 Energized Circuit De energized Circuit Figure 2 1 Cooling 2 3 2 5 7 8 3 4 8 b Heating See Figure 2 2 The unit will only heat when the controller is set above 10 14 F as relay TH is electronically locked out to prevent heating when the controller is set below 10 14 If the air temperature decreases 0 5 0 9 F below controller set point TH closes and the system enters the heating mode which is designed to raise the container air temperature When TH closes power flows through TH contacts and the heat termination thermostat to energize the heat relay HR This in turn energizes the heaters and he
188. 1 9 Loosen the hex nut and adjust each disk to the required air flow and tighten hex nut NOTE The main air slide is in the fully closed position during reduced air flow operation NOTE Model 69NT40 454 has a special air makeup cover with a maximum air flow 10096 open of 80CMH 47 Table 1 3 Safety and Protective Devices SAFETY DEVICES Circuit Breaker CB 1 UNSAFE CONDITIONS 1 Excessive current draw 1 DEVICE SETTING Trips at 24 amps Manual Reset 460 vac 69NT20 Trips at 29 amps 460 vac 69 40 Circuit Breaker CB 2 Trips at 50 amps Manual Reset 230 vac 2 Excessive current draw on control circuit 3 Excessive condenser fan motor winding temperature 4 Excessive compressor motor winding temperature 5 Excessive evaporator fan motor s winding temperature 6 Abnormally low refrigerant temperature 7 Abnormally high refrigerant temperature Fuse F Internal Protection IP CM Internal Protector IP CP N A Automatic Reset Internal Protector s N A Automatic Reset Pressure Relief Valve Low Side Pressure Relief Valve Opens at 6 amps Opens at 18 63 kg cm 265 psig Refer to paragraph 1 3 k High Side 8 Abnormally high discharge pressure 9 Solid state circuitry high voltage surge 10 Excessive power transformer winding temperature 1 7 SAFETY AND PROTECTIVE DEVICES System component
189. 1 i4 11 418 11218 TA 28 EB 28 555 Fic 1213141511213 BE BB BEE Ble c E D 2 0 Law i Lj is ig 19 9 9 96 9 4 USDA BATTERY pug 2 QJ 8 8 538 8 58 34 fe a Te MODULE Er RED La BATTERY BLK JS 5 SERES 7 CB23 3 d 244 648 Feo p E tt t 5 69NT35 1497 5 5 VJ ARTWORK 7 lt B9NT35 9214 REV Figure 5 34 Electrical Wiring Diagram Model 69NT40 444 13 Sheet 2 of 2 5 69
190. 12 DTT DEFROS TERMINATION THERMOSTAT KS L8 N E EVAPORATOR FAN CONTACTOR CHIGH SPEED 08 F E E as EVAPORATOR FAN MOTOR K8 L9 07 ES EVAPORATOR FAN CONTACTOR CLOW SPEED 14 USE FLA FUL OAD AMPS 911 CS UMIDITY CONTROL SWITCH F7 5 PRESSURE SWITCH 4 R ATER CONTACTOR TERMINATION THERMOSTAT D18 E18 INTERROGATOR CONNECTOR 7K ILC INLINE CONNECTOR CR 22 OPTION C7 C8 F8 G8 IP INTERNAL PROTECTOR E12 MDS MANUAL DEFROST SWITCH PP PROBE PLUG L17 011 P11 PROBE RECEPTACLE USDA G4 POTENTIAL TRANSFORMER 16 616 RIBBON CABLE K19 RRS RETURN RECORDER SENSOR G18 RTS RETURN TEMPERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE 18 SRS SUPPLY RECORDER SENSOR SSV SUCTION SOLENOID VALVE ST START STOP SWITCH 8 SIS SUPPLY PERATURE SENSOR TERMINAL BLOCK CONNECTION J7 CONTRO R RELAY COOLING J8 CONTRO R RELAY HIGH SPEED EVAP 2 110 TH CONTRO R RELAY CHEATING 18 T CONTRO RELAY CCONDENSER FAND I4 TRANSFORMER E11 TS CONTRO RELAYCSUCTION SOLENOID VALVE I9 CONTRO RELAY CLOW SPEED gt Z UV COMPRESSOR UNLOADER SOLENOID R22 OPTION JY UVT COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTION WATER PRESSURE SWITCH Revised 8 6 93 Figure 5 45 Electrical Wiring Schematic
191. 13 23 axi TB3 IP EM 1 14 N 2 12 PT 2 2 PS 2 PD18 311141 1 PDT 16 SEEN Pps PD10 Hes TB11 1 3 RMg RN amp R 5 PES PE12 D 9 DTT TB6 TB21 RM one WES c lt o 3 2 91 SMV 7820 1819 77 1 2 3 4 5 5 7 8 10 1 1 1 2 1 3 1 4 1 6 1 8 1 7 1 5 PD 213 4 5 6 7 8 9 1911 2324 S CONTROLLER PH PMISI2 HTATSTe 1 0 LOGIC BOARD PKS 51715131418 PG 1 2 3 4 5 5 7 8 9 4171127 Pihs e4 2212 1 3 3 5 2314 R LI COMMUNICATIONS INTERFACE DISPLAY ASSEMBLY MODULE PF 1 _ L 7 2 IE 3 4 ANNUNCIATOR D B 6 x o 2131415 2 r 1 4 ARTWORK LATE OR REORDERING SPECIFY D P N 6 20 373 138 Figure 5 43 Electrical Wiring Schematic Model 69NT20 274 3 Sheet 2 of 2 5 87 Revised 8 6 93
192. 17 11 20 7 21 19 24 1 22 2 13 18 5 23 9 10 14 16 5 516 112 314 R L Ht DISPLAY ASSEMBLY MODULE PF LHI 1 2 ANNUNCIATOR T 3 4 n 9 v o RRS 5 in 6 5 8 D B 5 x 1231452 17 ARTWORK t 69NT35 7814 REV Figure 5 9 Electrical Wiring Schematic Model 69NT40 454 Sheet 2 of 2 5 19 10 11 12 18 14 15 16 17 18 19 Cc 21 22 621 ES22 TB3 2 GRD Lom 1 EMG 22 4 I EF23 522 523 EMP2 rm EMG TA mon 855 8 6139 ik Es NY I iC 2 eH gooodo 2253 i Iel 8 8 hel zou m l mis B 914 1 2 R p p 52 LLW3 vu 11531 22 E 460 3 60 LHO 72133 133 7 22433 11491 e 1091 Z 104 1253 163 RAS 1933
193. 2 LN IS mS PD4 O 6 8 16 20 24 02 5 7 05 785 a H E T 0 CPB8 AN a llb llb non v S E imma x PD8 O100 ssv 0181 4 2 ono z A 03 ES TRX2 yp 2912014 we 2 N 5 9130 17 s 2 BLK 7 GHex Y 06 140 EMPI K Q dh o a SN PD14 H115D i 2 PM 09 9169 ILC UVT BLU A 9 RED en CCI 0170 RMB 1 PE12 01180 4 RND PE18 190 1 5W CHT ne 10 0200 5 cow B Lazio awe gt KEYWAY 21 1 SE giu RED m gt d gt d gt gt d gt sN LE BLK ST we 28 1123 8 28 ORN PRE PN Teno Oath Id ga d ee eb ee diente D 5 20 A Jaj S 5 5 1 e USDA BATTERY PACK gt 1 L 77 eZ ZEN 2 5 Se 9 a9 Be doa ac PLATE t fs 09 oe 69NT35 2157 5 J 2 ARTWORK 69NT35 1048 REV B Figure 5 52 Electrical Wiring Diagram Models 69NT40 444 20 444 22 444 23 amp 69NT40 441 22 23 25 Sheet 2 of 2 5 105 Revised 8 6 93
194. 20 C Ambient 66 8 to 77 2 ohms Type Sheath f Evaporator Fan Motor s Bearing Lubrication Factory lubricated additional grease not required Full Load Amps High Speed 2 0 2 3 Amps Low Speed 0 4 0 6 Amps Single Speed Motor 2 0 4 0 Amps Nominal Horsepower High Speed 0 58 1 hp Low Speed 0 07 0 12 hp Single Speed Motor 0 58 1 0 hp Revised 8 6 93 Rotation Evap Fan Motor 1 See Figure 1 2 CW when viewed from shaft end CCW when viewed from end opposite shaft end Evap Fan Motor 2 See Figure 1 2 CCW when viewed from shaft end CW when viewed from end opposite shaft end Speed 2850 3450 rpm Voltage 380 460 vac 1 ph 50 60 hz g Fuses Control Circuit 6 Amps F Microprocessor 5 Amps Slow Blow F3A Battery Charger 5 Amps Slow Blow F3B 1 5 VOLTAGE SWITCH AND POWER TRANSFORMER OPTIONAL WARNING Do not attempt to remove power plug s before turning OFF start stop switch ST unit circuit breaker s and external power source Make sure the power plugs are clean and dry before connecting to any power receptacle a Step Up Power Transformer The transformer is located under the condenser coil left hand side of unit and the purpose of this transformer is to provide 380 vac 3 ph 50 hz power when the 190 230 vac power cable black is connected to a 190 vac power supply or to provide 460 vac 3 ph 60 hz when the 190 230 vac power cable black is connected to a 230 vac power suppl
195. 3 4 z lt kiwo LU O 12 22 23 C13 C11 TRH1 TRH4 oe 2 CF23 GRD 7812 7815 AB Z939 K 1 2 cc82 K C LdH 2994 K 113424 N 2181 Edo TRH4 999 Ladon 6006 0 6 TB13 GRD RED Fue CDV RD N 1 1 1 2 2 THRU NO OF NO OF TURNS WIRES TB8 FERRITE CORES WIRES RTS SRS STS PR1 PR2 PR3 USDA 5 72 Figure 5 36 Electrical Wiring Diagram Model 69NT40 444 14 Sheet 1 of 2 REV A ARTWORK 69NT35 9304
196. 317194 c ae 45023 09 52 lt 12 837184 380 3 50 SER 1 Na 21 8 L lt B2 MH 777 121 122 50 TRANS AUTO vs 131 23 CB2 230V 1 4 m lt 4 A21 Pr H4 H3Q OH2 27 230 3 60 B 2 V Hj iori 12VAC 12 122 190 3 50 21 5 Y x 2 RTT 24VAC 77 yo a amp 7813 2 a a ST CF 1 TBI 0779 111121 3 5 3i lt 4 8 5 AMP 6 AMP IP TRANS 13 123 HPS 070 TC o 00 2 1 020 ciLic2 TBI RM RM ES 3 11 Be 2 EF 07 112 12 1 15 TN 21 1 1 P2 bs 20141 Ipp13 ciLic2 121 22 2 TB3 14 TE Lm EF 121 22 1 P2 P2 PI ut Pos 018 zx 2 131 123 5 131 123 n Poel Ipp1 31 1 2 HTT 1 TH HR 183 M r1 vee PD9 1 10 2 Ti 818 RM lt IRL gt D UR TB4 DTT TB21 RM MDS 06 SMV 777 1820 7819 1 213 4 5 5 7 2 10 121 9 121214151812 De T 16 11 12 13 14 15 16 7 12 19 20 21 22 23 24 CONTROLLER am PH 1 0 BOARD R LOGIC BOARD B C pp PG 12 3 4 17122 2 15 9 1231121241 13 18 5 5 5 1 2 3 4 R L a 1 P6 1 DISPLAY ASSEMBLY ab LIF uo
197. 40 444 14 Electrical Wiring Schematic Model 69 740 444 15 5 38 Electrical Wiring Diagram Model 69NT40 444 15 5 39 Electrical Wiring Schematic Model 69NT40 444 16 5 40 Electrical Wiring Diagram Model 69NT40 444 16 5 41 Electrical Wiring Schematic Model 69 740 444 17 5 42 Electrical Wiring Diagram Model 69 740 444 17 5 43 Electrical Wiring Schematic Model 69 20 274 3 5 44 Electrical Wiring Diagram Model 69NT20 274 3 5 45 Electrical Wiring Schematic Model 69 740 444 18 5 46 5 47 Electrical Wiring Diagram Model 69NT40 444 18 Electrical Wiring Schematic Model 69 40 444 19 5 48 Electrical Wiring Diagram Model 69NT40 444 19 5 49 Electrical Wiring Schematic Models 69NT40 441 21 amp 69NT40 444 21 5 50 Electrical Wiring Diagram Models 69NT40 441 21 amp 69NT40 444 21 5 51 Electrical Wiring Schematic Models 69NT40 444 20 444 22 444 23 amp 69NT40 441 22 23 25 5 52 Electrical Wiring Diagram Models 69NT40 444 20 444 22 444 23 amp 69NT40 441 22 23 25 5 53 Electrical Wiring Schematic Model 69NT40 441 24 5
198. 49A ET Um g 15 gt Bes 55 7 7 g amp w N N o v m lo n NON m ris 4 lt a 9 n L N lalola les 0 8 m o 5 56 Figure 5 28 Electrical Wiring Diagram Model 69NT40 444 12 Sheet 1 of 2 REV ARTWORK 69NT35 8994 N U Z NI Lee E anos RN PRI 2 mm BLU
199. 5 11 10 11 12 18 14 15 16 17 18 19 Cc GX SA 1 i u m Caf acc 3 ce Et af m 6 2953 2 eH gooodo b dd 8 le eni 8 el E ust ms B 1 Lb bd Kisa LLW3 i vun 11534 VER ID J ia 858 s set 5 5855 1093 05 C 1989 ej sap gt 1 43 NG a 2233 0 9 c dats 8 g 2250 B a ao 5 m P e134 4 Ri TY DX 8 Se 8 ARAR 21381 1 1133 8 LA 2 eee 11434 g nA LER ENS Sas 2 V usb G amp H ue CH 5153 25598 C N eui E m x RA u 555 Ps TEN SOO 224 T T T e amp DCE roo 9 g Hes 5 5 8 x 2 o 1 i eio RH CH t t f 2842 1391 vas o X
200. 514 REV Z Figure 5 38 Electrical Wiring Diagram Model 69NT40 444 15 Sheet 2 of 2 5 77 LEGEND ZONE SYMBOI DESCRIPTIO J18 AMBS AMBIE SENSOR COMPRESSOR CONTACTOR D2 1 CIRCUIT BREAKER 460V L8 CDV CAPILLARY DE SUPERHEATER VALVE CR22 OPTION L8 N6 CONDENSER FAN CONTACTOR J8 CHT CYLINDER HEAD THERMOSTAT R22 OPTION 18 COMMUNICATIONS I RFACE MODULE G8 Q6 C CONDENSER FAN MOTOR 07 03 COMPRESSOR MOTOR 118 CPDS COMPRESSOR DISCHARGE SENSOR I18 CPSS C
201. 54 Table 1 1 Model Chart Electrical Wiring Diagram Model 69NT40 441 24 LIST OF TABLES 1 2 Compressor Model Number Significance Chart 1 3 Safety and Protective Devices 1 4 Function Code Assignments 1 5 Alarm Indications ne oder seamed eere zer lere pe ET 2 1 Electrical Control Positions Above 10 14 F 2 2 Electrical Control Positions Below 10 14 4 1 Wear Limits for Compressors 4 2 Compressor Torque 4 3 Partlow Bulb Temperature Resistance Chart 4 4 Controller and Recorder Sensor Temperature Resistance Chart 4 5 Recommended Bolt Torque Values 4 6 Temperature Pressure Chart 12 4 7 Manual Override Operation of Microprocessor Revised 8 6 93 Page 5 30 5 32 5 34 5 36 5 38 5 40 5 42 5 44 5 46 5 48 5 50 5 52 5 54 5 56 5 58 5 60 5 62 5 64 5 66 5 68 5 70 5 72 5 74 5 76 5 78 5 80 5 82 5 84 5 86 5 88 5 90 5 92 5 94 5 96 5 98 5 100 5 102 5 104 5 106 5 108 SECTION 1 DESCRIPTION 11 INTRODUCTION Thi
202. 69NT40 444 22 69NT40 444 23 69NT40 454 1 69NT40 454 2 69NT40 454 3 A Provision for water cooled condenser If the water cooled condenser is added the refrigerant charge will change Table 1 1 Model Chart REFRIGER gt UNIT WEIGHT ANT 58 8 12 252 e a 1200 544 93 42 X 1325 601 90 44 X 1285 560 88 40 X 1215 551 8 8 4 0 1235 560 8 8 4 0 1360 617 12 0 5 4 1230 558 12 0 5 4 1200 544 12 0 5 4 1195 542 12 0 5 4 X I UNITS THAT HAVE PROVISIONS TO CONVERT R 22 1175 533 9 0 4 1 X 1175 533 9 0 4 1 X 1265 574 12 3 5 6 1240 562 12 3 5 6 1265 574 12 3 5 6 1265 574 12 3 5 6 X 1240 562 123 5 6 1330 603 12 0 5 4 1330 603 12 0 5 4 1210 549 12 0 5 X 1210 549 8 8 4 0 1210 549 12 0 5 4 X 1210 549 12 0 5 4 X 1210 549 12 0 5 4 X 1280 580 8 5 3 8 X 1400 635 123 5 6 X 1210 549 12 0 5 4 X 1380 626 123 5 6 X 1210 549 123 5 6 X 1210 549 123 5 6 X 1240 562 8 8 4 0 1240 563 8 8 4 0 1240 562 123 5 6 1265 573 12 3 55 1166 529 12 0 5 4 1190 540 12 0 5 44 X 1190 540 12 3 5 58 X Water Cooled Condenser gt gt gt I gt X xxi gt gt gt lt gt gt 1 KK X X X X x X X X X X Xx X X X gt gt Power Transformer I I Dual Voltage Compressor gt gt x 0X 00000 X UJ XC CJ OJ UJ UJ UJ UJ X gt x UJ 0X UJ x x x gt x UL x U U U XK x B Heat Exchanger OO I B The m
203. 69NT40 444 6 Sheet 1 of 2 5 30 G H J K L 4 10 4 80 CABLE POWER PLUG 4607 HE lt 4 52 lt a 277 380 3 50 ae 13 25 lt 6 un rhv 11 POHER PLUG 682 230V A 12 KETTE CBE Y HR p lt z
204. 8 RM RM peg 12 pe y 4 TB6 RM RM 2 2 MS 7821 6 T x 2 USDA BATTERY PACK 77 1 _ ANY TE 42 235 1 1123 1415 1617 e o 1611121314 16 18 17 15 112 13 1415 1817 8 9 12 13 14 15 16 17 18 19 20 21 22 23 24 contROLLER PH 1 0 BOARD gt 1 4 5 6 R PH LOGIC BOARD x pk 3 1 2 5 7 6 4 4 Bo d PA ppt 4 gt 34567 8 21 24 1 22 2 13 18 5 23 9 14 16 6 sleli 2 4 R 4 EY ma SE COMMUNICATIONS 1 INTERFACE DISPLAY ASSEMBLY oa 1 E MODULE PF H 1 els ens 2 ANNUNCIATOR 3 cl ata o 9 vo o 5 e s S P z NECEM E L e 112 374 15 12 3 ARTWORK PEATE FOR REORDERING SPECIFY G9NT35 9944 REV 69NT35 2107 CTD P N 69NT20 373 133 Figure 5 49 Electrical Wiring Schematic Models 69NT40 441 21 amp 69NT40 444 21 Sheet 2 of 2 5 99 Revised 8 6 93 11 13 14 15 16 17 18 19 O
205. 9 40 444 9 5 20 Electrical Wiring Diagram Model 69NT40 444 9 5 2 Electrical Wiring Schematic Model 69 740 444 11 5 22 Electrical Wiring Diagram Model 69 740 444 11 5 23 Electrical Wiring Schematic Model 69NT40 444 10 5 24 Electrical Wiring Diagram Model 69NT40 444 10 5 25 Electrical Wiring Schematic Models 69NT40 444 7 amp 444 8 5 26 5 27 Electrical Wiring Diagram Models 69NT40 444 7 amp 444 8 Electrical Wiring Schematic Model 69 740 444 12 5 28 n Electrical Wiring Diagram Model 69 740 444 12 5 29 Electrical Wiring Schematic Models 69NT40 454 2 amp 454 3 5 30 Electrical Wiring Diagram Models 69NT40 454 2 amp 454 3 5 31 Electrical Wiring Schematic Model 69 20 274 2 5 32 Electrical Wiring Diagram Model 69NT20 274 2 5 33 Electrical Wiring Schematic Model 69NT40 444 13 5 34 Electrical Wiring Diagram Model 69NT40 444 13 5 35 Electrical Wiring Schematic Model 69 740 444 14 5 36 5 37 Electrical Wiring Diagram Model 69NT
206. 95 10 psig Cut In 13 0 7 kg cm 190 10 psig 41 CFM Compressor Cutout 25 0 7 kg cm 350 10 psig Cut In 18 0 7 kg cm 250 10 psig j Refrigeration Charge Refer to Table 1 1 Pressure Relief Valves Low Side Opens 18 63 kg cm 265 psig High Side for R 12 Opens 24 kg cm 340 psig High Side with provision for R 22 Opens 34 10 kg cm 485 psig High Side on model 69NT40 441 25 Opens 35 15 kg cm 500 psig m Unit Weight Refer to Table 1 1 n Water Pressure Switch Optional Cut In 0 5 0 2 kg cm 7 3 psig Cutout 1 6 0 4 kg cm 22 5 psig 14 ELECTRICAL DATA a Circuit Breaker CB 1 Trips at 29 Amps Model 69NT40 CB 1 Trips at 24 2 Amps Model 69NT20 CB 2 Trips at 50 Amps b Compressor Motor Full Load Amps FLA 17 6 Amps 460 vac with current limiting set at 21 amps Model 69NT40 c Condenser Fan Motor Bearing Lubrication Factory lubricated additional grease not required Full Load Amps 2 0 4 0 FLA Nominal Horsepower 0 43 0 75 hp Rotation CCW when viewed from shaft end Speed 1425 1725 Voltage 190 380 208 230 460 vac 1ph 50 60 hz d Drain Pan Heaters Number of Heaters 1 Rating 750 watts 5 10 at 460 Vac Resistance cold 22 7 5 ohms nominal Type Sheath e Evaporator Coil Heaters Number of Heaters 4 Rating 750 watts each at 230 5 10 volts Resistance cold 68 F
207. BS Be FR BE D B 99 6 5 21 181 lt 2 gt 97 n 38 58 25 i RED 7 12 5 T 13 18 Lal 8 2 BATTERY 5 7 CB23 BATTERY MODULE ARTWORK 69 35 8024 REV Figure 5 6 Electrical Wiring Diagram Model 69NT40 444 3 Sheet 2 of 2 C12 L8 N 08 FB Q8 09 46 87 7 4 19 C7 C8 F8 68 K11 E12 GS H10 817 615 17 11 618 14 111 06 H18 J8 611 19 18 010 15 E11 LEGENO SYMBOL AMBS DESCRIPTION AMBIENT SENSOR COMPRESSOR CONTACTOR CIRCUIT BREAKER 460V CIRCUIT BREAKER 230V CONOENSER FAN CONTACTOR COMMUNICATIONS INTERFACE MODULE COOL LIGHT CONDENSER FAN MOTOR COMPRESSOR MOTOR COMPRESSOR DISCHARGE SENSOR COMPRESSOR SUCTION SENSOR CONDENSER SATURATION SENSOR CURRENT TRANSFORMER DEFROST HEATER BOTTOM LEFT DEFROST HEATER BOTTOM RIGHT DEFROST HEATER TOP LEFT DEFROST HEATER TOP RIGHT DEFROST LIGHT DRAIN PAN HEATER DEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR EVAPORATOR FAN MOTOR FUSE FULL LOAD AMPS HIGH PRESSURE SWITCH HEATER CONTACTOR HEAT TERMINATION THERMOSTAT INTERNAL PROTECTOR IN RANGE LIGHT MANUAL DEFROST SWITCH POTENTIAL TRANSFORMER QUENCH VALVE RIBBON CABLE REMOTE MONITORING PLUG RETURN TEMPERATURE SENSOR SOLENOID MODULATING VALVE SUCTION SOLENOID VALVE START STOP SWITCH SUPPLY TEMPERAT
208. CF P PD m lt RRS 2 m m D B o o lt x 11234512847 f ARTWORK 69NT35 9064 REV Figure 5 29 Electrical Wiring Schematic Model 69NT40 454 2 amp 454 3 Sheet 2 of 2 5 59 ES21 N 522 jJ TB3 2 3 s c 22 4 2 922 1 ES23 21 CF23 2353 163 L H 2153 kz L H 1153 90 CN 21 59 g lad Lesa 2343 x 133 12 Kitaa 1142 Koraal 200 Ketan 19 112 Hdd HILHO ry LWo plLlwo slad 38 3 3 15 8104 1243 ELMW3I 133 7 121 437 153 TB12 15 GRD ty rs 78 fe 2324 zo ECHO 5155 2289 Kz LYH 1283 11 1 642 5 12883 269 1649 90000 E 90998 9999996 texa z943 99 129 1292 1
209. CH POTENTIAL TRANSFORMER RIBBON CABLE REMOTE MONITORING PLUG RETURN TEMPERATURE SENSOR SOLENOID MODULATING VALVE START STOP SWITCH SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION CONTROLLER RELAY COOLING CONTROLLER RELAY EVAP CONTROLLER RELAY IN RANGE CONTROLLER RELAY HEATING CONTROLLER RELAY CONDENSER FAN TRANSFORMER TRANSFORMER AUTO 230 460 CONTROLLER RELAY SUCTION SOLENOID VALVE VOLTAGE SWITCH Figure 5 13 Electrical Wiring Schematic Model 69NT20 274 1 Sheet 1 of 2 5 26 C D E F G H J K L M N O P Q R 10 4 50 VS POWER RECEPTACLE CABLE 460 RI BK TT 2
210. CTOR D2 CB1 CIRCUI BREAKER 460V L8 CDV CAPI ARY DE SUPERHEATER VALVE CR22 OPTION L8 N6 CF CONDENSER FAN CONTACTOR J8 CHT CYLINDER HEAD THERMOSTAT R22 OPTION 18 CI CO UNICATIONS I RFACE MODULE G8 Q6 CM CONDENSER FAN MOTOR D7 Q3 COMPRESSOR MOTOR 118 CPDS COMPRESSOR DISCHARGE SENSOR 118 CPSS COMPRESSOR SUCTION SENSOR J18 CSAS CONDENSER SATURATION SENSOR J2 CT CURRE TRANSFORMER Qs DHB DEFROS ATER BOTTOM PS DHB DEFROS ATER BOTTOM RIGHT PS D DEFROS A R OP 05 DEFROS ATER OP RIGHT 5 DPH DRAIN PAN HEATER C12 DT DEFROS TERMINATION THERMOSTAT K9 L8 N7 EVAPORATOR FAN CONTACTOR CHIGH SPEED D8 F8 Q8 Q9 E EVAPORATOR FAN MOTOR K8 L9 07 ES EVAPORATOR FAN CONTACTOR CLOW SP D2 5 6 14 USE FLA FUI OAD AMPS 34 1 CS UMIDITY CONTROL SWITCH F7 PS IGH PRESSURE SWITCH L10 N4 R A R CONTACTOR D10 TERMINATION THERMOSTAT D18 E18 Ic INTERROGATOR CONNECTOR 7K ILC INLINE CONNECTOR CR 22 OPTION C7 C8 F8 68 IP INTERNAL PROTECTOR Ele DS MANUAL DEFROST SWITCH L17 PP PROBE PLUG RTN L17 011 P11 PR PROB RECEPTACLE CUSDA G4 PT POTENTIA TRANSFORMER QV QUENCH VALVE 16 616 R RIBBON CABLE K19 RRS RETURN RECORDER S SOR G18 RTS RETURN 1 PERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE 8 SRS SUPPLY RECORDER SENSOR 6 SSV SUCTION SOLENOID VALVE S START STOP SWITCH 8 STS SUPPLY PERATURE SENSOR
211. DA one 8 TB11 E Uv K TB17 RED UV1 oe Re 1 0 BOARD us TB4 e BR 2 1 RTS 2 1 asa LTB16 R gt lt B lt 5 11 21 s 12 22 x _ C13 CB23 53 3357 44545 uj gt 0 as LLLI eg 1 eH F3A 51 r6 p 3 V 2 WP pr 19 63 8 HTT 3 K 1 Pp17 01 Q GA 187 Do s HPs gt gt Ela clea a PD4 a 6 G DTT BRD PD2 7 0 TBS H Hd HPS E NA m 29 a pon ogo V one She m pps bo100 ssv CIB1 4 2 S PD23 01 1 gt HCS3 a Keena Dat 204 TRX2 bd VIO PTS u1 302 PC17 2 TAN BLK 2 PNK NR e k 51 40 EMP1 7 ORN A 5 orn 14 15 2 4 3 GRY 16 ILC uvt BLU 7 S RED UVT K ar cci 9179 uv lt 1 2 0190 5 5221 SIDE a208 SMV MDS o210 TFC gt 4 T TN KEYWAY 1 SIDE Y5 YS tay REO 228 5 Ld gt d gt A gt d gt oo DD NA d BLK
212. DEN SIDE PE10 C1200 H 5Mv CFS M 5 Ban me TB2 D DF SIGNAL 12 gt C K lt 5 L SIDE gR 3 3 m c SS u ST Bk O T n 11 il ey EB 58 Ee orn 28 RE 2 B aC mur L 14 12 14 12 Sa ee 99 66 96 RE m x 2 2m lt lt gt gt Li RED So 3 2 5 5 a ome ARTWORK 69NT35 7834 REV Figure 5 10 Electrical Wiring Diagram Model 69NT40 454 Sheet 2 of 2 5 21 K9 L8 7 08 28 08 09 13 07 AS B6 C14 J11 F 9 4 018 18 7 8 68 E12 L1 L1 011 P11 G4 H10 816 615 E11 111 K19 618 F14 H18 E6 H18 J J8 611 19 18 010 14 19 LEGEND SYMBOL AMBS CB CI CM 5 CPSS 5 5 CT DHBL DHBR DHTL DHTR DPH DTT SMV SRS 5 STS TB TC TF TI TH TN TQ WP DESCRIPTION AMBIENT SENSOR COMPRESSOR CONTACTOR CIRCUIT BREAKER 460V CONDENSER FAN CONTACTOR COMMUNICATIONS INTERFACE MODULE CONDENSER FAN MOTOR COMPRESSOR MOTOR COMPRESSOR DISCHARGE SENSOR COMPRESSOR SUCTION SENSOR CONDENSER SATURATION SENSOR CURRENT TRANSFORMER DEFROST HEATER BOTTOM LEFT DEFROST HEATER BOTTOM RIGHT DEFROST HEATER TOP LEFT DEFROST HEATER TOP RIGHT
213. DRAIN PAN HEATER DEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR HIGH SPEEC EVAPORATOR FAN MOTOR EVAPORATOR FAN CONTACTOR LOW SPEED FUSE FULL LOAD AMPS HUMIDITY CONTROL SWITCH HIGH PRESSURE SWITCH HEATER CONTACTOR HEAT TERMINATION THERMOSTAT INTERROGATOR CONNECTOR INTERNAL PROTECTOR MANUAL DEFROST SWITCH PROBE PLUG RTN PROBE RECEPTACLE USDA POTENTIAL TRANSFORMER QUENCH VALVE RIBBON CABLE REMOTE MONITORING PLUG RETURN RECORDER SENSOR RETURN TEMPERATURE SENSOR SOLENOID MODULATING VALVE SUPPLY RECORDER SENSOR START STOP SWITCH SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION CONTROLLER RELAY COOLING CONTROLLER RELAY HIGH SPEED EVAP TRANSFRESH CONTROLLER RELAY IN RANGE CONTROLLER RELAY HEATING CONTROLLER RELAY CONDENSER FAN CONTROLLER RELAY QUENCH TRANSFORMER CONTROLLER RELAY LOW SPEED EVAP WATER PRESSURE SWITCH Figure 5 11 Electrical Wiring Schematic Model 69NT20 274 Sheet 1 of 2 5 22 POWER PLUG 10 4 POWER CABLE T 460 3 60 W OR 380 3 50 12 22 R 5 5 TB2 13 23 TC 2 IPD20 TN 0141 IPp13 TE Pos 018 TV Poel IPD1 TH 09 PD10 TQ 017 1 021 TI PES 12 21 1 DEFROST SIGNAL USDA BATTERY MODULE PL 1 2 3 4 5 5 7 8 9110 11
214. E RECEPTACLE USDA G4 POTENTIAL TRANSFORMER H10 QV QUENCH VALVE B16 G16 RIBBON CABLE KB K11 K12 RM REMOTE MONITORING RECEPTACLE RRS RETURN RECORDER SENSOR G18 RTS RETURN TEMPERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE 8 SRS SUPPLY RECORDER SENSOR 10 SSV SUCTION SOLENOID VALVE ST START STOP SWITCH 8 STS SUPPLY PERATURE SENSOR TERMINAL BLOCK CONNECTION gy TC CONTROLLER RELAY COOLING J8 CONTROLLER RELAY HIGH SPEED EVAP 110 CONTROLLER RELAY HEATING 18 TN CONTROLLER RELAY CONDENSER FAND D10 TQ CONTROLLER RELAY QUENCH 14 TRANSFORMER E11 TS CONTROLLER RELAY SUCTION SOLENOID VALVE 19 CONTROLLER SPEED EVAP UV COMPRESSOR UNLOADER SOLENOID R22 OPTION J UVT COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTIOND Figure 5 35 Electrical Wiring Schematic Model 69NT40 444 14 Sheet 1 of 2 5 70
215. Ey a 25 6 WY 8 GXEL 3 2243 5 8 l S 5 8 8 pw J J giaa 5 o gt amp 04 8 oe lt 1 gt abo ee p 2842 gt G gt pe N lt lt lt a8 m a M rope gt CA Or Sl gt I T iq x o MS 140 2 e Figure 5 14 Electrical Wiring Diagram Model 69NT20 274 1 2 5 3 4 1 2 TRANS AUTO 3374 REV ARTWORK B9NT20 RTS HR22 DES DHTL HR21 DHBR DHTR HR23 DPH aa TB3 R TB16 R TB4 BR 9 BR TEMPERATURE CONTROLLER ANNUNCI ATOR PF PF DIGITAL DI SPLAY PG PG 1 0 BOARD LOGIC BOARD lt C11 VSA4 C12 VSB4 C13 VSC4 F6 82 THa E3 HTT PD17 TB CPB9 2 1812 3 emp I DTT 49 Mps2 MT 5 ot Hes
216. F G H I J K L M N N Power PLUG 19 2 POWER p Q 8 K 111121 B2 gl S2 lt WHT 12 22 12 22 lt 13 23 1 4 13 23 lt G 5 H1 HR 204 460 3 60 38098 so 1 2 TB13 5 x 2 121122 24 13123 ST x 13 TB 5 it 2 1 6 Cr E IP CP HPS 5 TC amp 6782 111121 BS be SAS PD2 PD20 c1 Ucal RM gt x UVT UV TB17 Sem gt mi 3 11 1 EF 2 11 21 1 12 12 IP CM 7815 IN q cF 1 25 55 4 P2 PD14 PD13 CTLIC2 2 TB3 IP EM IP EM 4 N EF 131123 1 2 2 1 PD6 PD18 31 41 CTUc2 13 23 4 11 TY 2 12 CTLIC2 31 41 3 HR TB3 HTT TB16 TH 1 A SET Pps 2 a 10 55 HCS 11 PR2 PRI TI 979 PM PES IPE12 TEE b 4 DTT TB21 RM RM lt MDS lt 05 gt 20791 d USDA BATTERY MODULE PN f 2 2159 1 1155 2 PMY 77 LL 3 3159 JL F3c pe ki AMP H BATTER 1 23 4 1567 8 319 1112131 416 181715 PD 1 2 3 4 5 6 71 8 110 111 12 13 14 15 16 17 18 14 20 21 22 231 24 2 CONTROLLER PH 2 1 4 5 6 R 1 0 BOARD
217. H 060 Hermetic Reciprocal 4th DIGIT 6th amp 7th DIGIT VOLUME 28 7 b Condenser Section The condensing section consists of a condenser fan motor condenser fan condenser saturation sensor CSAS and an air cooled condenser coil When the unit is operating with air cooled condenser operation air is pulled in the bottom of the coil and discharges horizontally through the center of the unit Some units are equipped with an optional water cooled condenser condenser receiver and a water pressure switch or condenser fan switch CFS See Figure 1 3 c Evaporator Section The evaporator section contains the temperature recorder bulb return recorder sensor RRS and thermistor return temperature sensors RTS thermostatic expansion valve evaporator fan motors and fans 2 evaporator coil and heaters drain pan and heaters defrost and heat termination switches See Figure 1 2 and Figure 1 3 for sensor location The evaporator fans circulate air throughout the container by pulling air in the top of the refrigeration unit and directing the air through the evaporator coil where it is either heated or cooled and then discharged out the bottom of the refrigeration unit into the container 1 7 Some units are equipped with two speed evaporator fan motors Refer to Table 1 1 When transporting perishable commodities the fan motors will be in high speed above 10
218. I TB6 1821 DEFROST SIGNAL 1820 P 19 8 9 10 11 12 13 14 16 18 17 15 PD 1 2 3 4 5 6 7 8 9110 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 0 BOARD s PH LOGIC BOARD 4 17 11 20 2 21 19 8 24 1 22 2 13 3 18 5 23 9 10 14 16 5 2 5 7 6 3 4 8 B 5 6 COMMUNICATIONS INTERFACE MODULE PPa N59NT35 7694 REV 1 2 3 4 Figure 5 1 Electrical Wiring Schematic Models 69NT40 444 amp 444 2 Sheet 2 of 2 5 3 f rr Cc 21 EF22 3 522 OPTION ES21 EMP2 1 GRD I EF22 I EF23 522 523 814 EMP2 EMG EM2 e Pl 22533 153 kera 2153 11534 1253 SEE pHdd r I8Hg POO e LHO 1 2 1 59 gt T LLN3 1 1 1154 8 Onal EX a ry ld Fifaa
219. IC BOARD 8 1 2 5 7 6 3 4 8 SEE ER A B C PA PB 112 13141518 1 1819 4 1982422 2133195 23 9 5156 1121314 R LI P _ COMMUNICATIONS EJ ui D INTERFACE DISPLAY ASSEMBLY L MODULE PF 1 m 2 ANNUNCI ATOR 4 X 3 5 t m amp S E D B s g ue e VS ou 45 231 ARTWORK PLATE FOR REORDERING SPECIFY _69 735 9494 REV E9NT35 1647 CTD P N BSNT20 373 123 Figure 5 37 Electrical Wiring Schematic Model 69NT40 444 15 Sheet 2 of 2 5 75 10 15 Cc EF21 EF22 ES21 ES22 TB3 EMP2 GRD EMG EF22 EF23 ES22 ES23 EMP2 EMG 2 4 2 slad PO erai FE C Do 0 17 L R2 54 E Lad 1953 L 5 ud E 102350 GH era OS the atta gt 1148 trosa Le RP eu N 99
220. ID VALVE CONTROLLER RELAY LOW SPEED EVAP COMPRESSOR UNLOADER SOLENOID R22 OPTION COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTION Figure 5 25 Electrical Wiring Schematic Model 69NT40 444 7 amp 444 8 Sheet 1 of 2 5 50
221. J PG pum COMMUNICATIONS DISPLAY ASSEMBLY 4 T INTERFACE L TT B C D Pp3 MODULE Pr r AA 1 2 ANNUNCIATOR 1 4 X 5 ABCDE 4 n o e 2 5 ICR ICF 5 5 8 8 8 2 5 lt RRS a 1 e 1 2 4 5 1 2 17 A n ARTWORK 69 35 7734 REV B Figure 5 3 Electrical Wiring Schematic Model 69NT40 444 1 Sheet 2 of 2 5 7 13 18 19 SE vsvi 5 2 783 22 2 EF21 1 GRD d 51381 EhVSA 4 B ZIKI 243 099 X l gt eal PS Seri yl fu n n ms E Bes v gt mn ust ZISA Gl 5 5 m Gori noun PISA TA 4 F3B TB14 TBI ASM HEASA 1H3 1243 L LIH3 195 1N3 OO 999 JOO CIAT FROM CIB 2000 PROVISION FOR OPTION 460 3 60 n 1242 5 9108 249 gt
222. K DIGITAL DISPLAY USDA CABLE PER SO A lt H PG A Q SHIELDA ORG ILCI 9 8R YEL PK aes uv 1 0 BOARD g BLK TB3 R TB4 BR 2 1 A RIS Deum 22 G po 11 821 51 s cr PB C12 CB22 C13 CB23 y N b i a an ddgdx 4551 be gt m m 48258 GORGS Uto a Y 0 2 CPBS V F6 2 12 13 9 4 011 N SHLD Ts _ 052 ppza 2050 6894 SHLD ANIAN 04 0 6 0 0 F r BRO x po2 O 7 9 785 a Hs M i 20 8 0 _ 0 88 8 rh F P Q 5 8 pag n PD21 9 00 V T TT S PD8 11100 55v 4 Nu 23 0 11 0 5 on 7 7 PD3 ERE 7 TRX2 VIO cupi 2012086 2 BLK 7 2 3H amp 11 1 17 2 sd MD PD6 C114CI EMP1 nep Ul 1 ORN A 5 6 H on 014 0150 2 PW GRY ILC ur i 9 959 cur n 01170 uv 1 lt lt e 0180 KEYWAY 1 0180 5 2 2 SIDE PE1O 01200 4 smv MDS Po 21 Y 4 D La Ce ene C lt T YT gt SIDE See px 9 aud gt q gt l
223. LER RELAY CONDENSER FAN CONTROLLER RELAY QUENCH TRANSFORMER CONTROLLER RELAY SUCTION SOLENOID VALVE VOLTAGE SWITCH WATER PRESSURE SWITCH Figure 5 3 Electrical Wiring Schematic Model 69NT40 444 1 Sheet 1 of 2 5 6
224. LING CONTROLLER RELAY EVAP CONTROLLER RELAY IN RANGE CONTROLLER RELAY HEATING CONTROLLER RELAY CONDENSER FAN TRANSFORMER CONTROLLER RELAY SUCTION SOLENOID VALVE COMPRESSOR UNLOADER SOLENOID R22 OPTION COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTION VOLTAGE SWITCH WATER PRESSURE SWITCH Figure 5 23 Electrical Wiring Schematic Model 69NT40 444 10 Sheet 1 of 2 5 46
225. LOADER SOLENOID THERMOSTAT R22 OPTION Revised 8 6 93 Figure 5 53 Electrical Wiring Schematic Model 69NT40 441 24 Sheet 1 of 2 5 106 10 11 D E
226. LWSTT 9 1253 9 9 1733 1233 lt gt lt gt 8 vlW3 rlH3 lt CO 1153 I ci3d3 4 133 FIN0 DE I ZXY1L I 933 LLWO CF23 12 7815 GRD 999 6006 0 6 O zgdo Lado CMG EMG CPG 5 izao 1 4 6 N 1 2283 CIB3 BLU PE17 TB2 o 38 Do FSA H O a 26 O O F38 TB1 BLK 11 13 RED CLA 23 TRH41 Pal CDV FERRITE CORES NO OF NO OF TURNS WIRES 2 THRU CABLE WIRES RTS SRS STS PR1 PR2 PR3 USDA BRN N YEL eR 3 PE PU BLK Pa 460 3 60 REV A ARTWORK 69NT35 9434 Figure 5 40 Electrical Wiring Diagram Model 69NT40 444 16 Sheet 1 of 2 5 80
227. Measure Superheat 1 Open access panel to expose the expansion valve and 1 4 port see Figure 1 1 The 1 4 port is equipped with a Schrader fitting 2 Attach a temperature tester sensor near the expansion valve bulb and insulate Make sure the suction line is clean and firm contact is made with tester 3 Connect an accurate gauge to the 1 4 port 4 Rununit until unit has stabilized Set controller 5 5 C 10 F below container temperature NOTE Suction pressure must be 0 5 kg cm 6 psig below valve M O P maximum operating pressure Example if valve rated at 55 MOB suction pressure must be below this MOP Recommended pressure is below 3 44 kg cm 49 psig 5 From the temperature pressure chart Table 4 6 determine the saturation temperature corresponding to the evaporator outlet pressure 6 Note the temperature of the suction gas at the expansion valve bulb 7 Subtractthesaturation temperature determined in Step 6 from the average temperature measured in Step 5 The difference is the superheat of the suction gas d Adjusting Superheat 1 Remove the refrigerant and then remove the two bolts holding the valve body together 2 Remove the cage assembly and rotate the adjusting nut to increase or decrease the superheat Turning the nut to compress the valve spring will increase the superheat and decrease refrigerant flow through the valve Decompressing the spring will decrease the superheat and increase
228. NTACTOR E10 TT AT TERMINATION THERMOSTAT E18 1 INTERROGATOR CONNECTOR ILC IN LINE CONNECTOR R22 OPTION C9 69 INTERNAL PROTECTOR K12 IRL IN RANGE LIGHT E12 MDS MANUAL DEFROST SWITCH G4 PT POTENTIAL TRANSFORMER 1 616 RIBBON CABLE K12 L7 R REMOT ONI TORING RECEPTACLE K19 RRS RETURN RECORDER SENSOR RTS RETUR MPERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE 8 SRS SUPPLY RECORDER SENSOR ST START STOP SWITCH 8 878 SUPPLY PERATURE SENSOR B TERMINAL BLOCK CONNECTIO J7 TC CONTRO R RELAY COOLING Jg CONTRO R RELAY CHIGH SPEED EVAP 19 TH CONTRO R RELAY CHEATING T CONTRO RELAY CCONDENSER FAND 14 TR TRANSFORMER E11 TS CONTROLLER RELAY SUCTION SOLENOID VALVE 110 TV CONTRO R RELAY CLOW SPEED EVAP 2 L7 UV COMPRESSOR UNLOADER SOLENOID R22 OPTION K7 UVT COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTION WATER PRESSURE SWITCH Figure 5 43 Electrical Wiring Schematic Model 69NT20 274 3 Sheet 1 of 2 Revised 8 6 93 5 86
229. OMPRESSOR SUCTION SENSOR J18 CSAS CONDENSER SATURATION SENSOR J2 CURRE TRANSFORMER Qs DHB DEFROS EATER BOTTO 5 DHBR DEFROS EATER BOTTOM RIGHT PS D DEFROS EATER OP 05 DHTR DEFROS EATER OP RIGHT NS DPH DRAIN PAN HEATER C12 DT DEFROST TERMINATION THERMOSTAT K9 L8 N7 EVAPORATOR FAN CONTACTOR CHIGH SPEED D8 F8 99 EVAPORATOR FAN MOTOR K8 L9 07 ES EVAPORATOR FAN CONTACTOR CLOW SPEED USE FLA FUI OAD AMPS 1 5 UMIDITY CONTROL SWITCH FZ PS IGH PRESSURE SWITCH L10 N4 R ATER CONTACTOR D10 FT TERMINATION THERMOSTAT D18 E18 INTERROGATOR CONNECTOR 7K ILC INLINE CONNECTOR R 22 OPTION C7 C8 F8 68 IP INTERNAL PROTECTOR E12 DS MANUAL DEFROST SWITCH 21 2 PROBE PLUG RTN L17 011 P11 PROBE RECEPTACLE CUSDA G4 POTENTIA TRANSFORMER H10 QV QUENCH VALVE B16 G16 R RIBBON CABLE K18 RRS RETURN RECORDER SENSOR G18 RTS RETURN TEMPERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE 8 SRS SUPPLY RECORDER SENSOR 10 SSV SUCTION SOLENOID VALVE 5 START STOP SWITCH 8 STS SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION JY TC CONTRO R RELAY COOLING CONTRO R RELAY HIGH SPEED gt 110 CONTRO R RELAY CHEATING 18 T CONTRO R RELAY CONDENSER FAND D10 CONTRO RELAY QUENCH I4 TRANSFORMER E11 TS CONTRO RELAYCSUCTION SOLENOID VALVE
230. ONTACTOR E CONDENSER FAN SWITCH CHT DER HEAD THERMOSTAT 22 OPTION 18 CI COMMUNICATIONS I RFACE MODULE 59 95 CONDENSER FAN MOTOR 07 93 CP COMPRESSOR MOTOR 118 CPDS COMPRESSOR DISCHARGE SENSOR 118 CPSS COMPRESSOR SUCTION SENSOR J18 CSAS CONDENSER SATURATION SENSOR J2 GT CURRE TRANSFORMER Qs DHBL DEFRO ATER BOTTOM P5 DHBR DEFROS ATER BOTTOM RIGHT P5 DHTL DEFROS ATER OP 05 DHTR DEFROS ATER OP RIGHT 5 DPH DRAIN PAN HEATER C12 DEFROST TERMINATION THERMOSTAT K10 L9 N7 EVAPORATOR FAN CONTACTOR HIGH SPEED D9 FS 08 G9 EVAPORATOR FAN MOTOR O7 ES EVAPORATOR FAN CONTACTOR CLOW SPEED 5 USE FLA FUI OAD AMPS 5 IGH PRESSURE SWITCH 4 R ATER CONTACTOR TT AT TERMINATION THERMOSTAT E18 1 INTERROGATOR CONNECTOR K8 ILC IN LINE CONNECTOR R22 OPTION C7 C9 F8 6G8 INTERNAL PROTECTOR E12 DS MANUAL DEFROST SWITCH G4 PT POTENTIAL TRANSFORMER QV QUENCH VALVE B16 616 R RIBBON CABLE RRS RETURN RECORDER SENSOR G18 RTS RETURN TEMPERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE 8 SRS SUPPLY RECORDER SENSOR I10 SSV SUCTION SOLENOID VALVE ST START STOP SWITCH 18 STS SUPPLY MPERATURE SENSOR B TERMINAL BLOCK CONNECTION CONTRO RELAY COOLING CONTRO R RELAY CHIGH SPEED EVAP 110 CONTRO RELAY CHEATING IS T CONTRO RELAY CCONDENSER FAN D11 TQ CONTRO RELAY QUENCH I4 TR TRANSFORMER Ls CONTRO
231. ORME D3 TRANS TRANSFORMER CAUTO 230 460 D11 TS CONTROLLER RELAY CSUCTION SOLENOID VALVE TT HOUR METER I10 TV CONTROLLER RELAY CLOW SPEED EVAP 2 L7 UV COMPRESSOR UNLOADER SOLENOID R22 OPTION K7 UVT COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTION VS VOLTAGE SWITCH 09 WATER PRESSURE SWITCH OPTIONAL Figure 5 37 Electrical Wiring Schematic Model 69NT40 444 15 Sheet 1 of 2 5 74
232. OSTAT R22 OPTION WATER PRESSURE SWITCH Electrical Wiring Schematic Model 69NT40 444 11 Sheet 1 of 2 5 42 CBI POWER PLUG 06 H sk Fr 4650 3 50 BLU E 12 380 3 50 BRN GRN YEL F3B 5 AMP F3A F 5 TB2 TQ PD1 2 2 1 1 3 3 F3C PL CHARGER BOARD 1234 5 67 8 9 1011 1273174 16 1811715 CONTROLLER 3 2 PG R PG DISPLAY ASSEMBLY PF ANNUNCIATOR 13 021 1 4 1 ICR TRC TC PD2 PD20 UVT TB1 n CHT 1 TN Pl 2 P2 IPD13 TE 1 018 Poe 0 09 1 PD10 5 RM L3 Li TB21 3 DEFROST SIGNAL USDA BATTERY MODULE T 1820 Pu 1 19 PD 1234 5 67 8 9 10 11 12 13 14 15 16 17 18 19 20 27 22 23 24 516 1 0 LOGIC BOARD 2 3 4 5 5 7 8 9 PC 4 17 11 20 7 21 19 8 24 1 22 2 13 18 5 23 9 10 14 16 6 COMMUNICATIONS INTERFACE B C D pp3 MODULE A ICF ARTWORK 9 35 8754 REV Figure 5 21 Electrical Wiring Schematic Model 69NT40 444 11 Sheet 2 of 2
233. Piston Pin Diameter Piston Ring Gap Piston Ring Side Clearance 28 amp 37 CFM Piston Ring Side Clearance 41 CFM Table 4 1 Wear Limits For Compressors FACTORY MAXIMUM INCHES Ww INCHES INCHES 1 6268 41 3207 0020 1 6233 41 2318 0020 1 3760 34 9504 0020 1 3735 34 8869 0020 1 3768 34 9707 0020 T oro 1 3735 34 8869 0025 omo 5 1 3735 34 8869 0025 ose seem neo ms n 1 3735 34 8869 0025 mem om mem _ 50 8254 00 3302 00 0254 00 0508 4 22 FACTORY MINIMUM 50 4444 17 4574 00 1270 00 0000 00 0254 MAXIMUM WEAR BEFORE REPAIR MM 0 0508 0 0508 0 0508 0 0508 0 0508 0 0254 0 0635 0 0635 0 0635 0 6350 0 6350 0 0508 0 0508 0 0254 0 6350 0 0508 0 0508 Table 4 2 Compressor Torque Values TORQUE RANGE SIZE DIAMETER THREADS FT LB INCHES mee 1 16 1 8 1 4 1 4 5 16 AEC 7 16 eee 5 8 5 8 10 e re 1 1 2 NEF National Extra Fine 4 23 USAGE Pipe Plug Crankshaft Oil Return Check Valve Crankcase Pipe Plug Gauge Connection Connecting Rod Capscrew Baffle Plate Crankcase Side Shield Oil Pump Drive Segment Unloader Valve Cover Plate Plate End Bearing Head Terminal Block Cap Screws Suction Valve Discharge Valve Pump End Bearing Head Bottom Plate Crankcase Compressor Fo
234. R DISCHARGE SENSOR 18 CPSS COMPRESSOR SUCTION SENSOR J18 CSAS CONDENSER SATURATION SENSOR J3 CT CURRENT TRANSFORMER 5 DHBL DEFROST HEATER BOTTOM LEFT M5 DHBR DEFROST HEATER BOTTOM RIGHT M5 DHTL DEFROST HEATER TOP LEFT L5 DHTR DEFROST HEATER TOP RIGHT K12 DL DEFROST LIGHT AMBER 15 DRAIN PAN HEATER C12 DTT DEFROST TERMINATION THERMOSTAT L9 N7 EF EVAPORATOR FAN CONTACTOR C9 F9 07 08 EVAPORATOR FAN MOTOR A6 B6 C14 F FLA FULL LOAD AMPS 7 HPS GH PRESSURE SWITCH L4 L10 HR EATER CONTACTOR 010 HTT EAT TERMINATION THERMOSTAT E18 IC TERROGATOR CONNECTOR C7 C9 F9 G9 TERNAL PROTECTOR K11 RL RANGE LIGHT GREEN 8 LC LINE CONNECTOR R22 OPTION D12 MDS MANUAL DEFROST SWITCH G4 PT POTENTIAL TRANSFORMER B16 G16 R RIBBON CABLE 7 411 012 REMOTE MONITORING PLUG K18 RRS RETURN RECORDER SENSOR G18 RTS RETURN TEMPERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE H18 SRS SUPPLY RECORDER SENSOR 11 SSV SUCTION SOLENOID VALVE D6 ST START STOP SWITCH H18 STS SUPPLY TEMPERATURE SENSOR TB TERMINAL BLOCK CONNECTION G7 CONTROLLER RELAY COOLING 9 E CONTROLLER RELAY EVAP F11 CONTROLLER RELAY IN RANGE K10 H CONTROLLER RELAY HEATING K9 CONTROLLER RELAY CONDENSER FAN 5 TRANSFORME C11 TS CONTROLLER RELAY SUCTION SOLENOID VALVE J8 UV COMPRESSOR UNLOADER SOLENOID R22 OPTION H8 UVT COMPRESSOR UNLOADER SOLENOID THERMO
235. Remove two lower capscrews securing motor assembly to bracket and then remove Ty Raps from wire harness Loosen two upper capscrews on the fan motor assembly Remove or set aside motor to reach capacitors With power OFF discharge the capacitor and disconnect the circuit wiring c Checking the capacitor Three methods for checking capacitors are 1 Direct replacement 2 volt ohmmeter and 3 capacitor analyzer l Direct replacement of capacitor with one of the same value 2 Volt ohmmeter set on RX 10 000 ohms Connect ohmmeter leads across the capacitor terminals and observe the meter needle If the capacitor is good the needle will make a rapid swing toward zero resistance and then gradually swing back toward a very high resistance reading If the capacitor has failed open the ohmmeter needle will not move when the meter probes touch the terminals If the capacitor is shorted the needle will swing to zero resistance position and stay there 3 Capacitor analyzer The function of the analyzer is to read the microfarad value of a capacitor and to detect insulation breakdown under load conditions The important advantages of a analyzer is its ability to locate capacitors that have failed to hold their microfarad ratings or ones that are breaking down internally during operation It is also useful in identifying capacitors when their microfarad rating marks have become unreadable 4 28 HUMIDISTAT a Maintenance Soil
236. SENSOR ESSOR CONTACTOR BREAKER 460V BREAKER 230 SER FAN CONTACTOR CYLINDER HEAD THERMOSTAT R22 OPTION COMMU C00 CON COM COM COM CO CO U V VOT m 20 DdD DM lt gt lt RRE FRO RO RO RO RO N RO gt gt gt T C2 CO C2 C02 C2 7 lt lt IT rm rm rm rm cL WUg rn rn gt xL CD Umc coc D gt O Ur UD gt 22 gt WATER D 2 NAL ROLL SFRE TROLL SFRE TROLL TROLL TROLL TRANSFRE TRANSF RE TRANSFOR CONTROLL COMPRESSO COMPRESSOR VOLTAGE ICATIONS INTERFACE MODULE LIGHT WHITE SER FAN MOTOR ESSOR MOTOR ESSOR DISCHARGE SENSOR ESSOR SUCTION SENSOR SER SATURATION SENSOR T TRANSFORMER ST HEATER BOTTOM LEFT ST HEATER BOTTOM RIGHT ST HEATER TOP LEFT H L N ST HEATER TOP RIGHT ST LIGHT AMBER PAN HEATER ST TERMINATION THERMOSTAT RATOR FAN CONTACTOR RATOR FAN MOTOR TRANSFRESH LOAD AMPS PRESSURE SWITCH R CONTACTOR TERMINATION THERMOSTAT OGATOR CONNECTOR AL PROTECTOR GE LIGHT GREEN E CONNECTOR R22 OPTION L DEFROST SWITCH TIAL TRANSFORMER CABLE TE MONITORING PLUG RN RECORDER SENSOR TEMPERATURE SENSOR OID MODULATING VALVE Y RECORDER SENSOR TION SOLENOID VALVE T STOP SWITCH
237. STAT R22 OPTION VS E VOLTAGE SWITCH D9 WP WATER PRESSURE SWITCH Figure 5 51 Electrical Wiring Schematic Models 69NT40 444 20 444 22 444 23 amp 69NT40 441 22 23 25 Sheet 1 of 2 Revised 8 6 93 5 102
238. SV valves are fully open unless suction solenoid override is activated See section 1 11 for explanation of suction solenoid override The temperature control is still within the tight limits Conditions could exist however which may cause the return air temperature to rise rapidly Such a case would be the initial reaching of set point temperature When the set point temperature is initially reached the load may still be warmer than the set point temperature This could cause a rapid rise in return air temperature when the compressor is off causing a rapid restart or on off cycling of the compressor which is undesirable prevent this from occurring a 6 minute compressor off time must be satisfied before the compressor will restart Under a condition of a rapidly changing return air temperature the time delay may allow the return air temperature to rise slightly more than 0 2 C 0 4 F above the set point temperature before the compressor can restart 1 13 4 Function and Data Codes There are 30 functions which the operator may access to examine the operating status of the unit access these functions perform the following Press the code select key press an arrow key until the left window displays the desired code number see Table 1 4 The right window will display the value of this item for 5 seconds before returning to the normal display mode If a longer time is desired pressing the Enter key will extend the time to
239. Solenoid Modulating Valve SMV Suction Solenoid Valve SSV 69NT40 Condenser Saturation Sensor CSAS If Used Ambient Sensor AMBS Water Pressure Switch WP Optional Water Cooled Condenser Receiver Optional Sight Glass Supply Air Temperature Sensor STS 12 13 14 15 16 17 18 19 20 21 SIDE VIEW UNITS WITH PROVISIONS FOR R 22 Supply Recorder Sensor SRS Optional Suction Service Valve Filter Drier Pressure Relief Valve Liquid Line and Charging Valve Moisture Liquid Indicator Quench Valve QV Solenoid Quench Valve Thermostatic Expansion Nitrogen Feed Optional Receiver Optional Figure 1 3 Water Cooled Condenser Receiver Section 1 5 m 6 2 r 18 9 e mod 1 UNITS WITH TWO SPEED EVAPORATOR MOTOR
240. T PS D DEFROST HEATER OP 05 DHTR DEFROST HEATER OP RIGHT K12 DL DEFROS IGHT 5 DPH DRAIN PAN HEATER C12 DT DEFROST TERMINATION THERMOSTAT K9 L8 N7 EF VAPORATOR FAN CONTACTOR HIGH SPEED D8 F8 EM EVAPORATOR FAN MOTOR K8 L9 07 ES EVAPORATOR FAN CONTACTOR LOW SPEED 5 5 14 FUSE FLA FUI OAD AMPS 1 cs UMIDITY CONTROL SWITCH PS IGH PRESSURE SWITCH L10 N4 R EATER CONTACTOR D10 TT EAT TERMINATION THERMOSTAT DIB E18 IC INTERROGATOR CONNECTOR 7K ILC INLINE CONNECTOR R 22 OPTION C7 C8 F8 G8 IP INTERNAL PROTECTOR K11 IRL IN RANGE LIGH E12 MDS MANUAL DEFROST SWITCH L17 PROBE PLUG RTN L17 011 P11 PROBE RECEPTACLE USDA G4 POTENTIAL TRANSFORMER B16 G16 R RIBBON CABLE K6 K11 K12 RM REMOTE MONITORING RECEPTACLE K19 RRS RETURN RECORDER SENSOR G18 RTS RETURN TEMPERATURE SENSOR F14 SMV SOLENOID MODULATING VALVE 18 SRS SUPPLY RECORDER SENSOR 10 SSV SUCTION SOLENOID VALVE E6 ST START STOP SWITCH 8 STS SUPPLY TEMPERATURE SENSOR TERMINAL BLOCK CONNECTION J7 CONTROLLER RELAY COOLING J8 CONTROLLER RELAY HIGH SPEED gt 110 TH CONTROLLER RELAY HEATING 18 TN CONTROLLER RELAY CONDENSER FAND 14 TRANSFORMER E11 TS CONTROLLER RELAY SUCTION SOLENOID VALVE 19 CONTROLLER RELAYC LOW SPEED EVAP L7 UV COMPRESSOR UNLOADER SOLENOID R22 OPTION 27 UVT COMPRESSOR UN
241. TRANSICOLD Container Refrigeration Unit 69NT40 454 T 246 10 lt lt O Q gt Tr T 2 lt TRANSICOLD SERVICE MANUAL CONTAINER REFRIGERATION UNIT MODELS 69NT20 274 69NT40 441 69NT40 444 69 40 454 UNITED 34 TECHNOLOGIES TRANSICOLD Carrier Transicold Division Carrier Corporation Box 4805 Syracuse N Y 13221 Carrier Corporation 1993 e Printed in U S A 0593 TABLE OF CONTENTS Section Page 1 DESCRIPTION KOREA WAREN QURE Ede o 1 1 1 1 Introduction o segetes sate RE reae 1 1 1 2 General Description aM eS ar E t da ale 1 7 1 3 Refrigeration System Data 1 7 1 4 BIC CHICA ess Sexe teh HE Ie d EPI RE 1 8 1 5 Voltage Switch and Power Transformer Optional 1 8 1 6 Fresh Air Makeup Vent au ass dee Rr br eere rien 1 9 1 7 Safety and Protective Devices 1 10 1 8 R trigeration Circuit a tus v RI s vus ESSE M IE ARS 1 10 1 9 Water Cooled Condenser Optional 1 11 1 9 1 Water Cooled Condenser with Water Pressure Switch 1 11 1 9 2 Water Cooled Condenser with Condenser Fan Switch CFS 1 11 110 Remote Monitoring Optional 1 11 1101 Remote Monit
242. This results in de energizing the compressor and condenser fan motor Also the cool light is de energized The evaporator fan motors continue to run to circulate air throughout the container When the return air temperature increases to 0 2 0 4 F above set point and providing a sufficient off time period has elapsed relays TC and TN energizes to restart the compressor Also at this time the condenser fan motor starts and the cool light is illuminated 2 4 2 Controller Set Above 10 C 14 F NOTE Setting the controller above 109 14 F on units with two speed motors will place the motors in high speed relay EF energizes Contactor ES de energizes 2 2 a Cooling See Figure 2 1 With decreasing supply air temperature and if the supply air is above set point the unit will be cooling with the condenser fan motor compressor motor and evaporator fan motors energized Also at this time the cool light is illuminated When the air temperature decreases to a tolerance above set point relay TI energizes and the in range light is illuminated Refer to section 1 13 4 Code 29 If the air temperature continues to fall modulating cooling starts at approximately 0 2 C 0 4 F above set point The modulating valve will have a variable current up to 1 30 amps at full modulation At this time it is possible for the quench solenoid valve to energize before the compressor shuts off as the valve energizes with a
243. UNLOADER SOLENOID R22 OPTION JY UVT COMPRESSOR UNLOADER SOLENOID THERMOSTAT R22 OPTION WP WATER PRESSURE SWITCH Figure 5 47 Electrical Wiring Schematic Model 69NT40 444 19 Sheet 1 of 2 Revised 8 6 93 5 94
244. URE SENSOR TERMINAL BLOCK CONNECTION CONTROLLER RELAY COOLING CONTROLLER RELAY EVAP CONTROLLER RELAY IN RANGE CONTROLLER RELAY HEATING CONTROLLER RELAY CONDENSER CONTROLLER RELAY QUENCH TRANSFORMER CONTROLLER RELAY VOLTAGE SWITCH SUCTION SOLENOID VALVE Figure 5 7 Electrical Wiring Schematic Model 69NT40 444 4 Sheet 1 of 2 5 14
245. any leaks d Evacuate and dehydrate the unit Refer to section 4 3 e Charge unit per section 4 4 4 3 EVACUATION AND DEHYDRATION 4 3 1 General Moisture is the deadly enemy of refrigeration systems The presence of moisture in a refrigeration system can have many undesirable effects The most common are copper plating acid sludge formation freezing up of metering devices by free water and formation of acids resulting in metal corrosion 4 3 2 Preparation a Evacuate and dehydrate only after pressure leak test Refer to section 4 2 b Essential tools to properly evacuate and dehydrate any system include a vacuum pump 8 5 cfm volume displacement P N 07 00176 01 and electronic vacuum gauge c Keeptheambient temperature above 15 6 C 60 F to speed evaporation of moisture If ambient temperature is lower than 15 6 C 60 F ice might form before moisture removal is complete Heat lamps or alternate sources of heat may be used to raise the system temperature d Replace the filter drier with a section of copper tubing with the appropiate fittings This idea will help speed up the evacuation procedure 4 3 3 Procedure 12 T
246. at 0 32 F as verified by the resistance thermometer If the temperature indicated by the thermometer differs from 0 C 32 F by more than 0 6 C 1 F when compressor cycles off rezeroing must be performed Unit Off Place the recording thermometer element sensing bulb in 0 C 32 F ice water bath Ice water bath is prepared by filling an insulated container of sufficient size to completely immerse bulb with ice cubes or chipped ice then filling voids between ice with water and agitating until mixture reaches 0 C 32 F as shown by a laboratory thermometer When the temperature at the element sensing bulb has stabilized at 0 C 32 F as indicated by stable stylus indication compare temperature indicated by stylus with temperature shown by a laboratory thermometer If the two readings do not agree the recording thermometer should be rezeroed Refer to paragraph d d Rezeroing the Recording Thermometer 1 Be certain that the element bulb temperature has stabilized at 0 32 F the amount of temperature difference between the test meter or thermometer reading and the stylus indicated temperature If the difference noted between the known element temperature and indicated temperature is within acceptable limits 0 3 of 0 C 1 2 of 32 F do not attempt to rezero If more than 0 3 C 1 2 F in variation carefully note the number of degrees 2 lf recording thermometer is found to require re
247. at light The evaporator fans continue to run to circulate air throughout the container As the supply air decreases to the in range tolerance below set point relay TI and the in range light de energize after 15 minutes time delay and will remain de energized until the supply air increases to a tolerance below set point Refer to section 1 13 4 Code 29 When the temperature rises to 0 2 C 0 4 F below set point TH opens heating off and the system again enters the holding zone The compressor and condenser fan motor are not running as contactors C and CF remain de energized The evaporator fans continue to run to circulate air throughout the container A safety heater termination thermostat HTT attached to an evaporator coil support set to open at 54 5 130 F will open the heating circuit if overheating occurs TO CONTROL TRANSFORMER F3B 5 5 6 2 1 8 5 5 TQ PD17 PD21 TS 10 0171 PD8 17 TI RM PD14 PD13 PDS TB18 D D L3 12 vd USDA BATTERY MODULE 2 1 3 CHARGER PL 1 2 3 4 5 6 7 81 9110 11112 13 14 16 18 17 15 PD PH CONTROLLER 372 1141516 1 2 3 4 5 56 7 8 3 Energized Circuit
248. ata can be displayed in tabular form The interrogator will not erase the data from the unit DataCORDER memory After 1500 hours of data recording the older data will be overwritten by the latest reading Refer to section 1 13 5 amp h Provide a two way communication link to transmit operational and stored unit data to a remote computer communication center and the ability to allow remote control of refrigeration unit operation pre trip initia tion defrost initiation set point change defrost interval Cor in range tolerance time delay start interval and current limiting i For software revision number 106 or greater provide the ability to select or change Codes 26 to 32 without AC power being hooked up Refer to section 1 13 9 1 13 2 General Layout of Control Center The entire Computer Control Electronic Center is housed in one control box consisting of a control panel which has the annunciator board and display board attached behind it The relay board and logic board are secured above the control panel Locking push on connectors are used to attach the wiring of the unit to the logic and relay boards Gold plated terminals are used to ensure reliable electrical connections and eliminate corrosion The microprocessor control box is designed to permit ease of installation and removal and allows rapid replacement of the microprocessor on board the ship This permits analysis and repair of the cont
249. ator Fan Motor Relay High Speed EF 15 Voltage Switch VS Optional 5 Current Transformer CT 16 Circuit Breaker CB 1 460V 6 Terminal Block TB 17 Potential Transformer PT 7 Microprocessor Control Box 18 Circuit Breaker CB 2 230V Optional 8 Remote Monitoring Receptacle RM Optional 19 Evaporator Fan Motor Relay Low Speed ES 9 Manual Defrost Switch MDS 20 Battery Module Switch BMS Optional 10 Start Stop Switch ST 20 Condenser Fan Switch CFS Optional 11 Microprocessor Control Panel Display Figure 1 4 Control Box Revised 8 6 93 1 6 1 2 GENERAL DESCRIPTION a Compressor Section NOTE Check the compressor Serial Model Number plate for CFM displacement refer to Table 1 2 The compressor section includes the compressor with high pressure switch power cable storage compartment and an optional power transformer which is located to the left of the compressor This section also contains the modulating solenoid valve suction solenoid valve Model 69NT40 only quench valve moisture liquid indicator manual liquid line valve filter drier pressure relief valves compressor suction sensor CPSS and compressor discharge sensor CPDS The supply air temperature sensor STS supply recorder sensor SRS and ambient sensor AMBS are located at the right side of the compressor Table 1 2 Compressor Model Number Significance Chart 06DR2379CC1970 nde
250. ator Motor Turned On See P3 2 1 Minute Test P4 3 Evaporator Motor Off See 1 1 P5 Probe Tests See P5 0 and P5 1 also you should make note that during the pre trip test codes P5 0 and P5 1 will be seen only when a failure occurs P5 0 Return Supply Probe Test A temperature comparison is made between the return and supply probes High speed evaporator fans are run for 8 minutes to eliminate air temperature differences P5 1 Primary Secondary Probe Test Forunitwith DataCORDER only After 8 minutes the temperature difference between the primary and secondary probe supply and return is compared to a standard A failure may be due to some temperature extreme which existed before the test started and the test should be rerun If still bad check probes and connections and possibility of airflow restriction P6 0 Compressor Started And Runs for 45 Seconds Check for a minimum current increase is made A failure indicates a compressor motor problem or power source fault P6 1 Suction Modulation Valve Opening The Modulation Valve is fully opened for two minutes unless restricted by the current limiting function A predetermined temperature difference dependent upon the valve position and box temperature is compared to the supply and return probe readings A failure indicates low capacity This could be due to the modulation valve not opening as required or some other restriction in the line such as the filter dri
251. ble ring pistons and ring sets are to be installed both compression rings must be installed Also double ring and single ring pistons may be installed in the compressor 2 Thecompression ring is chamfered on the inside circumference This ring is installed with the chamfer towards the top If using a double ring piston stagger the ring end gaps so they are not aligned The gap between the ends of the piston rings can be checked with a feeler gauge by inserting the ring into the piston bore about one inch below the top of the bore Square the ring in the bore by pushing it slightly with a piston The maximum and minimum allowable ring gaps are 0 33 and 0 127 mm 0 013 and 0 005 inch Compression ring Figure 4 13 Piston Rings c Installing the Components 1 Install the crankshaft through the pump end of the compressor Do not damage main bearings Push pistons from the inside of the crankcase through the cylinders being careful not to break the rings Place chamfered side of connecting rod against radius of crankpins Install matching connecting rod caps through bottom cover plate 2 The oil screen located in the bottom of the crankcase is connected to the inlet of the oil pump Whenever the compressor crankcase is opened inspect the screen for holes or an accumulation of dirt The screen can be cleaned with a suitable solvent There are two types of oil pumps vane and gear See Figure 4 3 to identify which oil pump is used
252. bq m Po C114 TRH1 C13 TRH4 FTRHI MODA 4 X 4 RED GRD c2 Ses OK 788 8 e TB2 FERRITE CORES WIRES 10 NO OF NO OF TURNS THRU WIRES RTS SRS 575 AMBS CPSS RRS 460 3 60 8424 ARTWORK 69NT3S Figure 5 18 Electrical Wiring Diagram Model 69NT40 454 1 Sheet 1 of 2 5 36 lt TEMPERATURE CONTROLLER i DHTL ANNUNCIATOR LOGIC BOARD DHBR PF 3 HR23 ONR PF DPH DIGITAL DISPLAY AOA 91919 9 845 1LC1 6 8RN 8 RRS J J 7817 BLK 1 0 BOARD
253. bricated and do not require additional grease WARNING Always turn OFF the unit circuit breakers CB 1 amp CB 2 and disconnect main power supply before working on moving parts a Remove upper access panel See Figure 1 1 by removing mounting bolts and T I R locking device Reach inside of unit and remove Ty Rap securing wire harness loop b Removethetwo lower mounting bolts that secure the motor fan assembly to the unit Loosen the two upper bolts as the motor mount upper holes are slotted c Remove motor fan and wiring from unit Place fan motor and fan on a support Remove the wiring and fan d Lubricate fan motor shaft with a graphite oil solution Never Seez Apply thread sealer Loctite H brown in color to the two fan set screws Install fan on motor The evaporator fan locating dimension is shown in Figure 4 15 10 79 4 25 INCHES FH Figure 4 15 Evaporator Fan Locating Dimension e Connect wiring per applicable wiring diagram and install motor and fan assembly in unit Apply power momentarily to check fan rotation Refer to section 1 44 If fan spins backwards refer to section 4 27 for two speed motors Replace access panel making sure panel does not leak Make sure T I R locking device is lockwired 4 15 SERVICING THE EVAPORATOR COIL HEATERS WARNING Before servicing unit make sure the unit circuit breakers CB 1 and
254. ck Reset Open valves completely 4 16 or 4 21 4 5 1 13 4 INDICATION TROUBLE POSSIBLE CAUSES 3 4 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING Start Stop switch OFF or defective Circuit breaker OFF or defective External power source OFF No power to unit Circuit breaker or fuse defective Transformer defective TR Condenser fan internal motor protector open Evaporator fan internal motor protector open Heat relay defective No control power Heater termination switch open Unit will not heat or has insufficient heat Heater s defective Heater contactor or coil defective Evaporator fan motor s defective or rotating backwards Evaporator fan motor contactor defective Temperature controller malfunction Defective wiring Loose terminal connections Low line voltage 3 5 UNIT WILL NOT TERMINATE HEATING Unit fails to stop heating Temperature controller improperly set Temperature controller malfunction Heater termination switch remains closed along with the heat relay 3 6 UNIT WILL NOT DEFROST PROPERLY Will not initiate defrost automatically Defrost timer malfunction Loose terminal connections Defective wiring Defrost termination or heat termination switch open Heater contactor or coil defective Manual defrost switch defective Defrost termination switch open Will not initiate defrost manually Initiates but relay DR drops out Low line voltage Heater contactor or coil defective Heater s
255. compressor wear limits and bolt torque values a Place the compressor in a position where it will be convenient to drain the oil Remove the oil plug on oil pump inlet passage See Figure 4 6 for location to vent the crankcase Loosen the drain plug See Figure 4 2 in bottom plate and allow the oil to drain out slowly Remove the plug slowly to relieve any crankcase pressure A plug in the bottom center of the crankcase may also be removed for draining the motor end more quickly Some units do not have this plug Cylinder Head Gasket Discharge Valve Screw and Lockwasher Discharge Valve Stop Discharge Valve Valve Plate Valve Plate Assembly Valve Plate Gasket Figure 4 4 Exploded View of Valve Plate b Remove cylinder head capscrews If the cylinder head is stuck tap the cylinder head with a wooden or lead mallet Be careful not to drop the head or damage the gasket sealing surface See Figure 4 2 and Figure 4 4 Remove cylinder head gasket c Free the valve plate from the cylinder deck by using the discharge valve hold down capscrews as jack screws through the tapped holes of the valve plate after the valve stops and valves have been removed Remove the valve plate gasket See Figure 4 4 d Turn compressor over on its side and remove the bottom plate Remove the bolts and connecting rod caps See Figure 4 5 Match mark each connecting rod cap and connecting rod for correct reassembly
256. control mode operation To exit pre trip at any time press the pre trip key and hold it for 1 second A delay of up to 5 seconds may be encountered NOTE The compressor time guard may be in effect upon completion of pre trip Consequently the compressor may not start for up to 6 minutes Tests are performed by measuring temperatures amperage of the individually tested components These values are compared to proper values and the Pass Fail indication given Test Codes P Initiated Alllights LED s and LCD segments are turned on for visual inspection P1 0 Heaters Turned On Amperage measurements are made Failure is an indication of faulty heater s or improper wiring P1 1 Heaters Turned Off Amperage should be zero Failure indicates contactor has remained arced closed or current sensor is reading improperly P2 0 Preheaters Checked If so Equipped See P1 P3 0 Low Speed Condenser Fan If so Equipped See P3 2 P3 1 Low Speed Condenser Fan Off If so Equipped See 1 1 P3 2 High Speed Condenser Fan On Amperage measurements are made after 15 seconds Failure is an indication that the motor is defective or didn t start due to bad contactor or defective wiring Motor could also be heavily loaded i e bad bearing P3 3 Condenser Fan Off See 1 1 P4 0 Low Speed Evaporator Motor Turned On See P3 2 1 Minute Test P4 1 Evaporator Motor Off See 1 1 P4 2 High Speed Evapor
257. e port and drum of refrigerant 12 Open VAPOR valve e Partially frontseat turn clockwise the suction service valve and slowly add charge until the refrigerant appears at the proper level refer to section 4 4 1 4 5 REPLACING THE COMPRESSOR See Figure 4 2 WARNING Make sure power to the unit is OFF and power plug disconnected before replacing the compressor rah 14_ 3 7 iE 11 5 10 Z 9 6 1 Discharge Valve Flange 2 High Pressure Switch Connection 3 Low Pressure Connection 4 Suction Valve Flange 5 Motor End Cover 6 Serial Model No Plate 7 Sight Glass 8 Bottom Plate 9 Oil Drain Plug 10 Bearing Head 11 Oil Pump See Figure 4 3 12 Oil Fill Plug Refer to paragraph 4 8 13 Oylinder Head 14 Valve Plate Figure 4 2 Compressor Model 06DR GEAR PUMP VANE PUMP Figure 4 3 Oil Pump There are two types of oil pumps vane and gear Force feed lubrication of the compressor is accomplished by a oil pump driven directly from the compressor crankshaft Refrigeration oil is drawn from the compressor crankcase through the oil filter screen and pick up tube to the oil pump located in the bearing head assembly The crankshaft is drilled to enable the pump to supply oil to the main bearings connecting rod bearings and the shaft seal NOTES 1 Check the compressor Serial Model Number plate for CFM displacement
258. e 29 OFF OFF ON ON ON Energized De energized Energized De energized De energized Energized De energized Energized De energized De energized De energized De energized Energized Energized Energized Energized Energized Energized Energized De energized Table 2 2 Electrical Control Positions Below 10 C 14 F COOLING HOLDING Dehumidifica HEATING DEFROST ZONE tion Energized De energized De energized Energized De energized De energized Energized Energized SUR SUE De energized De energized at set points below 10 14 F Energized at set points below 10 14 F gt De energized De energized De energized Energized De energized De energized UE Energized Refer to paragraph De energized De energized 1 13 4 Code 02 ON OFF SE ae On In Range Refer to paragraph 1 13 4 Code 29 OFF OFF Energized De energized Re De energized Energized De energized di ie De energized De energized De energized Energized Energized Energized do du De energized Unit with optional Humidistat Refer to section 1 17 Dehumidification and heating modes do not operate at set points below 10 C 14 F 2 6 INDICATION TROUBLE SECTION 3 TROUBLESHOOTING POSSIBLE CAUSES 31 UNIT WILL NOT START OR STARTS THEN STOPS No power to unit Loss of control power Compressor hums but does not start External power source OFF Start Sto
259. e cool the container to the treatment temperature or below b The product should be pre cooled to treatment temperature c Latch in the USDA back up battery box d Probe calibration is achieved by ice bathing the three USDA probes and performing the Calibrate Monitor Probes function on a DOS based portable computer or Husky interrogator This calibration determines the three probe offsets e The product is then loaded directly from the pre cooling storage area to the container so that the product temperature does not rise f Placement of probes there are three probes required for a USDA cold treatment procedure Sensor1 Place in pulp of the product located next to the return air intake Sensor 2 Place in pulp of the product five feet from the end of the load for 40 ft con tainers and three feet from the end of the load for 20 ft containers This probe should be placed in a center car ton at 1 2 the height of the load Sensor3 Place in pulp of product five feet from the end of the load for 40 ft containers and three feet from the end of the load for 20 ft containers This probe should be placed in a carton at a side wall at 1 2 the height of the load g To initiate USDA Recording begin the cold treatment recording connect the interrogator and select Cold Treatment Initialization Update option h Interrogation software is available for DOS based personal computers which allow retri
260. e suction solenoid valve SSV Once opened the refrigerant flow rate and unit cooling capacity is increased If set point is above 10 C 14 F and the suction solenoid valve SSV is not activated suction solenoid valve opens during temperature pulldown period unless current limiting restricts its use b Suction Solenoid Override This function restricts the opening of the suction solenoid valve SSV under certain ambient and box temperature conditions If the primary return sensor RTS fails AL56 the suction solenoid valve will not open unless the ambient temperature is less than 10 50 F If the ambient sensor fails AL58 the suction solenoid valve will not be allowed to open until the return air temperature is less than 1 67 35 F If both the ambient and return air RTS sensors fail the suction solenoid valve will not be allowed to open until at least one of the sensors is repaired 1 12 FROST FORMATION ON COMPRESSOR NOTE Some Models have a thermostatic expansion quench valve so frost formation on compressor is NOT APPLICABLE To see which Models have a solenoid quench valve refer to Section 5 Frost may in normal operation form on the compressor suction service valve and end bell This is caused by normal quench solenoid valve operation in conjunction with the suction modulation valve Figure 1 6A shows the allowable frost limit pattern for units operating with the controller set point above
261. ect equalizing line from expansion valve 4 Remove capscrews and lift off power assembly and remove cage assembly Check for foreign material in valve body 5 thermal bulb is located below the center of the suction line 4 o clock position This area must be clean to ensure positive bulb contact Strap thermal bulb to suction line and insulate both with Presstite b Installing Expansion Valve 1 Replace all gaskets make sure to lightly coat with oil Insert cage and power assembly and bolts 4 18 Tighten bolts equally Fasten equalizer flare nut to expansion valve 2 Leak check the unit per section 4 2 Evacuate and dehydrate unit per section 4 3 and add refrigerant charge per section 4 4 2 3 Clean suction line with sandpaper before installing bulb to ensure proper heat transfer Strap thermal bulb to suction line making sure bulb is firmly against suction line The bulb is located in the 4 o clock position on the suction line 4 Check superheat See Table 4 6 Superheat setting is 4 4 to 5 5 8 to 10 F at 0 C 32 F container temperature Checking Superheat NOTE It is not recommended adjusting internal adjustable valves unless absolutely necessary If a replacement valve has the wrong superheat setting the valve may be adjusted if you do not have another replacement valve on hand Due to the time involved in adjusting the superheat replace the valve rather than adjusting it 10
262. ed as an effective postharvest method for the control of the Mediterranean and certain other tropical fruit flies Exposing infested fruit to temperatures of 2 2 degrees Celsius 36 F or below for specific periods results in the mortality ofthe various stages of this group of notoriously injurious insects In response to the demand to replace fumigation with this enviromentally sound process Carrier has integrated this Cold Treatment capability into its microprocessor controller These units have the ability to maintain the container temperature within 1 4 degree Celsius of setpoint and record minute changes in product temperature within the DataCORDER memory and thus meet USDA criteria refer to section 1 13 7 if EE LT 5 PEN 2 85 m 1 Dummy Receptacle 2 Power Cable 3 12v DC Battery and Charger Module or 9 Battery Box 4 Dummy Plug Figure 1 8 USDA Battery Module 1 25 The following is summary of steps required to initiate a USDA Cold Treatment a Pr
263. ed sensing elements can be cleaned by dipping the stem in soapy fresh water or fresh water with washing powder max 80 176 F When drying the stem must remain tensioned 1 the set point knob is set to approximately 0 R H Drying time approximately 24 hours If necessary recalibrate the humidistat b Setting 1 The upper switching point of switch is set by the set point knob E See Figure 4 25 2 Incase of deviations of the measured humidity from the set point a recalibration by means of the nut S is recommended E EUN Figure 4 25 Humidistat 3 If the actual value is higher than the set point turn nut S clockwise 4 If the actual value is lower than the set point turn nut S counterclockwise Set Point 1 6 tum 2096 15 40 15 60 11 70 8 80 5 4 29 MICROPROCESSOR CONTROLLER NOTE For manual override operation of the microprocessor refer to Table 4 7 CAUTION When doing any arc welding on the unit or container disconnect all connectors from controller and remove ground lead going to I O board to prevent any damage due to electrostatic discharge Handling of Microprocessor Controllers Here is a list of guidelines that should be followed when handling a microprocessor controller These steps should be implemented when replacing the controller when doing any arc welding on the unit
264. er If the suction solenoid valve open test below fails this would indicate that another part of the system is bad i e Revised 8 6 93 compressor There is the possibility that a probe is in error even if P5 0 passed P6 2 Quench Valve Test NOTE Some models have a thermostatic expansion quench valve so quench valve test is NOT APPLICABLE for these models To see which models have a solenoid quench valve refer to Section 5 The compressor suction temperature is measured with the quench closed Modulation Valve is at 20 The quench is energized and the suction temperature drop after 60 seconds is checked A failure indicates a defective quench valve or improper wiring Other possible causes are expansion valve not seating properly unit low on refrigerant charge or a faulty suction temperature sensor P6 3 Suction Modulation Valve Closed The modulation and suction solenoid valve are closed and the unit is run for 5 minutes The return and supply probe readings are to be within a range indicating a minimal capacity A failure indicates improper closing of the valve The possibility of a faulty probe could also be examined P6 4 Suction Solenoid Valve 69NT40 The suction solenoid valve is opened Modulation Valve closed The supply and return probe temperature difference is compared to a predetermined value A failure indicates low capacity This could be caused by the valve being defective or improperly wired Also
265. er or Water Pressure Switch Malfunction 3 4 3 13 Step Up Power Transformer Malfunction 3 4 TABLE OF CONTENTS CONTINUED Section Page 4 SERVICE CREAR CRDI OON RUE E ER 4 1 41 Removing Refrigerant 4 1 4 2 Refrigerant Leak Checking 4 1 43 Evacuation and Dehydration 4 1 4 3 1 General Aree e RR rede Er wes 4 1 4 3 2 Preparation uy qu ERE DR I Fee D IR Eee Res 4 1 4 3 3 Proc dure se ski te de ex o rad e e redo EV reg 4 1 4 4 Adding or Checking the Refrigerant Charge 4 2 4 4 1 Checking the Refrigerant Charge 4 2 4 4 2 Adding Refrigerant to System Full Charge 4 2 4 4 3 Adding Refrigerant to System Partial Charge 4 2 4 5 Replacing the Compressor 4 3 4 6 Compressor Disassembly 4 4 4 7 Compressor 4 6 4 8 Checking Compressor Level 4 7 4 9 Checking or Replacing Moisture Liquid Indicator 4 8 4 10 Checking or Replacing the Filter Drier
266. er than 30V Alarm 54 Primary Supply Air Sensor Alarm 54 is set by an invalid primary supply sensor reading outside the range of 38 to 4 54 C This alarm is ignored during the first 15 minutes of operation See Alarm 26 If Alarm 54 is set and the primary supply is the control sensor the secondary supply sensor will be used for control Alarm 55 Secondary Supply Air Sensor Alarm 55 is set by an invalid secondary supply sensor reading outside the range of 38 to 4 54 C This alarm is ignored during the first 15 minutes of operation See Alarm 26 If Alarm 55 is set and the secondary supply is the control sensor the the primary return sensor will be used for control Alarm 56 Primary Return Air Sensor Alarm 56 is set by an invalid primary return sensor reading outside the range of 38 to 4 54 C This alarm is ignored during the first few minutes of operation See Alarm 26 If Alarm 56 is set and the primary return is the control sensor the primary supply sensor will be used for control Alarm 57 Secondary Return Air Sensor not applicable for some units Alarm 57 is set by an invalid secondary return sensor reading outside the range of 38 to 4 54 C This alarm is ignored during the first 15 minutes of operation See Alarm 26 This sensor is only used for data logging and has no backup Alarm 58 Ambient Temperature Sensor Alarm 58 is triggered by an ambient temperature outside the
267. esistance to temperature b Checking Resistance Thermometer Calibrate the resistance thermometer by completely filling a thermos container full of ice cubes or chips and filling the voids between the ice with plain water Stir the solution until the mixture registers 0 to 0 3 32 to 32 59 as indicated by a laboratory thermometer Immerse the resistance thermometer in 0 C 32 F solution and check its accuracy at this temperature With this instrument be certain that the recommended length of the check probe is immersed so that it accurately will reflect temperature Bear in mind that this measurement checks the test probe at 0 C 32 F only it is possible for this type of instrument to be inaccurate at other temperatures Rezero check thermometer if necessary by manufacturer s instructions c Checking the Recording Thermometer Bulb Temperature Checking temperature is accomplished comparing the instrument s indicated temperature stylus with the known temperature existing at the element sensing bulb To properly check the temperature of the recorder the element sensing bulb should be stabilized at a temperature of 0 C 32 F This is accomplished by using one of the two following methods whichever is more convenient Unit Running Place set point at 0 C 32 F After unit has pulled down to this temperature allow the compressor to cycle ON OFF 3 to 5 times to be certain temperature has stabilized
268. et 2 of 2 5 83 21 EF224 ES214 ES224 2 2 1 Oe GRD 222 223 522 523 CF21 e o EM2 CF23 DO 4 2 P1 EMG Eye cwe2 EMG 1 expo H s s a x Z x a u 1253 N gt O ou HR amo Trait 22 T LLWa i 1233 3 Ca GEX tlld Frid TB2 5 O 5 0 uj Fe o SPARE O ee F3B JG CIB3 CIB 8103 L a lt eiua XR COH 99 rh LWwo r LLWwo 12 15 GRD Do rs me fe 099 2 8832 Qe 33 5153 C ZZN 38
269. eval of trip data from the DataCORDER memory Contact Carrier service representative for details 1 16 NITROGEN FEED Optional The purpose of the option is to provide a way to inject nitrogen into the air stream of the unit This is done by connecting a nitrogen line to the quick connect on the front of the unit with a 1 4 nipple conforming to the MIL C 4109 The nitrogen can then be feed into the unit with a maximum pressure of 35 PSI which gives a flow rate of 19 2 CFM WARNING Do not use a nitrogen feed inlet pressure higher then 35 PSI Revised 8 6 93 NITROGEN FEED FLOW RATE INLET PRESSURE PSIG 0 2 4 6 8 FLOW RATE CFM 10 12 14 16 18 117 HUMIDISTAT OPTIONAL NOTE The supply air must be in range or humidistat circuit will not energize The humidistat Figure 1 2 is factory set at 70 relative humidity R H and is designed to operate when transporting a chill load controller set above 10 14 F and is locked out when the controller is set below 10 C a The humidistat will be in operation if 1 Supply air is illuminated 2 Dehumidification control Code 32 is ON 3 Controller is set above 10 14 F 4 Container relative humidity reaches the 70 R H setting of humidistat in range in range light The above energizes the humidistat circuit to energize the heaters and heat light b For testing purposes WARNING Beware of rotating evaporator
270. f the rings will facilitate removal Each piston pin is locked in place by lock rings which are snapped into grooves in the piston wall 1 Capscrew 6 Connecting Rod 2 Cap 7 Compression Ring 3 Crankshaft 8 Piston 4 Thrust Washer 9 Pin 5 Rotor Drive Key 10 Retainer Figure 4 9 Crankshaft Assembly k Since the stator is not replaced in the field the terminal plate assembly need not be disturbed unless a leak exists or a terminal part requires replacing Disassemble and assemble the terminal plate as shown in Figure 4 11 1 Equalizer Tube and Lockscrew Assy 2 Lockwasher 3 Counterweight Motor End Figure 4 10 Removing Equalizing Tube and Lock Screw Assembly The terminal mounting plate assembly as originally installed is assembled so as to leave a small space between the outer terminal bushing and the surface of the mounting plate This is to provide further crush of the terminal bushing in case a leak should occur To stop leak tighten the terminal bushing nut only enough to stop the escape of gas Do not tighten until terminal bushing is flush with the mounting plate The tightening torque used at the factory is 0 21 to 0 23 mkg 18 to 20 inch pounds maximum to prevent damage to the plastic parts NOTE Parts shown are for one terminal 1 Terminal Bushing Nut Lock Washer Terminal Washer Outer Terminal Bushing O Ring Terminal Bushing Washers Grey Terminal Bushing Washers Red Inner Termi
271. fan when conducting following test 1 Remove the front evaporator fan motor 1 access panel see Figure 1 1 The humidistat is located behind this panel 2 Setthe controller set pointer within 2 C 3 6 F of container supply air temperature 3 Set the dehumidification control Code 32 to ON 4 Turn the humidistat control knob until heaters are energized heat light ON and then reset control to 70 R H Replace access panel and lockwire 1 26 FALLING RISING TEMPERATURE TEMPERATURE 1 5 2 7 F 0 5 0 9 F 20 20 0 5 0 9 CIRCULATION 1 C 1 8 F CIRCULATION ONLY ONLY 1 5 2 7 F NOTE For In Range Tolerance Refer to section 1 13 4 Code 29 Figure 1 9 Controller Set Point Below 10 14 1 27 FALLING RISING TEMPERATURE TEMPERATURE 1 5 2 7 MODULATING o o MODULATING ere tunt 0 5 C 0 9 F 20 U SET POINT AIR CIRCULATION ONLY 20 0 5 0 9 1 C 1 8 F HEATING HEATING 1 5 2 7 F NOTE For In Range Tolerance Refer to section 1 13 4 Code 29 Figure 1 10 Controller Set Point Above 10 C 14 Revised 8 6 93 1 28 SECTION 2 OPERATION 2 4 PRE TRIP INSPECTION Before Starting WARNING Beware Of Unannounced Starting Of The Evaporator And Condenser Fans Ifcontainer is empty check inside for the follo
272. fore be sure that the acid is slowly added to the water DO NOT PUT WATER INTO THE ACID this will cause spattering and excessive heat Wear rubber gloves and wash the solution from the skin immediately if accidental contact occurs Do not allow the solution to splash onto concrete 5 the tubes with this solution by filling from the bottom See Figure 4 18A Important be sure to provide a vent at the top for escaping gas 6 Allow the Oakite No 32 solution to soak in the tube coils for several hours periodically pump circulating it with an acid proof pump An alternate method may be used whereby a bottle See Figure 4 18B filled with the solution and attached to the coils by a hose can serve the same purpose by raising and lowering of the bottle The solution must contact the scale at every point for thorough de scaling therefore ensure that no air pockets exist by regularly opening the vent to release gas Keep flames away from the vent gases Close vent pipe Centrifugal pump I 30 at 35 head 6925 Priming valve when pump is running d uu d 15 runni 4 Condenser Remove water regulating valve Ev Return PES mesh screen A Forced Circulation Fill condenser with cleaning solution Do not add solution more rapidly than vent can exhaust gases caused by chemical action 1 Pipe 5 Approximate 3 to 4 Condenser B
273. from high ambient this cycle will repeat until the control temperture is less than or equal to the set point temperature 5 At such time the selected defrost interval time will be completed If the unit drifts out of range and the control temperature is greater than 5 C above set point afterthe 2 5 hours of countdown but prior to completion of the selected interval the unit will immediately go into defrost Upon termination of defrost the selected interval will be reset If DTT opens at any time during the timer count down the interval is reset and the countdown begins over If DTT has failed open ie AL61 is active and the primary return sensor temperature is less than 10 C the interval timer countdown begins The interval timer is reset if the return air temperature rises above 24 C See section 2 4 3 Code 27 Temperature Units C or F This code determines the temperature unit s C or F which will be used for all temperature displays The user selects C or F by selecting code 27 and pushing the Enter key The factory default value is C Code 28 Failure Action If after 15 minutes of running all four of the control sensors are out of range the system will enter the shutdown state defined by the failure action The user selects one of four possible actions as designated by a selection code A Full Cooling SMV 100 B Partial Cooling SMV 50 open C Evaporator Fan Only
274. g to 30 seconds the time a chosen function code is displayed Entering a code se lect mode to interrogate the alarm list Entering the value of a user selectable mode Clear ing the alarm list and initiating pre trip Enter b Two 2 large LCD s 19mm 0 748 inch high which are easily viewed in direct sunlight and backlighted for superior nighttime visibility c Five 5 Mode Indicator Lights Cool Heat Defrost In Range Alarm d Two 2 Yellow high intensity light emitting diodes LED for return or supply air probe display indication 1 14 DataCORDER Key v Display Optional Hours Since Last Trip Start Trip Start Hours since last trip start Initiates Start when pressed simultaneously with hours since last trip start 1 13 3 Microprocessor Temperature Control There are two control ranges Frozen and Perishable The Frozen range is active with set points at or below 10 C 14 F and the Perishable range is active at set points above 10 C 14 F See Figure 1 9 and Figure 1 10 a Perishable range above 10 C 14 F For set points above 10 C 14 F the controller will maintain supply air at the set temperature by the following modes of operation 1 Conventional Dehumidification Control Code 32 OFF cooling by refrigeration with suction modulation and the compressor cycling at light loads Electric resistance heating 2 Conventio
275. gure 5 18 Electrical Wiring Diagram Model 69NT40 454 1 Sheet 2 of 2 5 37 C12 K9 L8 N7 08 F8 Q8 Q9 K8 L9 07 AS B6 C14 J11 F L10 N4 D10 018 18 K C C8 F8 68 E12 L1 L1 011 P11 G4 H10 815 615 11 111 K19 618 F14 H18 110 H18 J J8 611 110 18 010 LEGEND SYMBOL AMBS 1 COV CF CHT Ci CM CP CPDS 55 CSAS CT DHBL DHBR DHTL DHTR DTT EF EM ES DESCRIPTION AMBIENT SENSOR COMPRESSOR CONTACTOR CIRCUIT BREAKER 460V CAPILLARY DE SUPERHEATER VALVE R22 OPTION CONDENSER FAN CONTACTOR CYLINDER HEAD THERMOSTAT R22 OPTION COMMUNICATIONS INTERFACE MODULE CONDENSER FAN MOTOR COMPRESSOR MOTOR COMPRESSOR DISCHARGE SENSOR COMPRESSOR SUCTION SENSOR CONDENSER SATURATION SENSOR CURRENT TRANSFORMER DEFROST HEATER BOTTOM LEFT DEFROST HEATER BOTTOM RIGHT DEFROST HEATER TOP LEFT DEFROST HEATER TOP RIGHT DRAIN PAN HEATER OEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR HIGH SPEED EVAPORATOR FAN MOTOR EVAPORATOR FAN CONTACTOR LOW SPEED FUSE FULL LOAD AMPS HUMIDITY CONTROL SWITCH HIGH PRESSURE SWITCH HEATER CONTACTOR HEAT TERMINATION THERMOSTAT INTERROGATOR CONNECTOR INLINE CONNECTOR R 22 OPTION INTERNAL PROTECTOR MANUAL DEFROST SWITCH PROBE PLUG RTN PROBE RECEPTACLE USDA POTENTIAL TRANSFORMER QUENCH VALVE RIBBON CABLE REMOTE MONITORING PLUG RETURN RECORDER SENSOR RETURN TEMPERATURE SENSOR
276. h silastic RTV432 Dow Corning 6 Attach bulb clamps tightly to bulb 7 Connectelement flange to recorder making sure hub of flange faces out to fit into the hole in instrument case recording thermometer 8 Rezero the recorder Refer to sections 4 18 a through 4 18 d 9 Install inlet air grille and upper panel Start unit and check recorder calibration CAUTION Capillary tubing may be bent but never sharper than 1 2 radius extra care should be taken when bending adjacent to welds The sensing bulb should never be bent as this will affect calibration 4 19 RECORDING THERMOMETER SAGINOMIYA NOTE Do not overtighten chart nut after replacing chart Battery I 2 Push voltage indicator test switch item 2 Figure 4 17 Replace battery if voltage indicator points to the red or white zone b Calibration 1 2 Place recorder bulb in ice bath 0 0 2 C 32 0 35 F Remove rear upper panel to remove bulb Leave bulb immersed in ice bath for 10 minutes 3 After 10 minutes rotate the chart by hand and check the stylus indicated temperature Do not touch stylus during the checkout procedure 4 If adjustment is required loosen setscrew cross recessed head Using a 7 mm wrench rotate the adjustment screw clockwise to set the stylus 1 to 2 C 1 8 to 3 6 F higher than desired temperature Open door and remove chart nut and platen Install new chart on platen 5 Rotate the adjustme
277. he resistance indicates a ground short is present inspect the length of wiring for damaged or exposed wires Replace where necessary 3 Settingthe digital ohmmeter for low range check coil s resistance If coil s resistance is below 5 ohms it is recommended to be replaced New coils have an approximate resistance of 7 6 ohms at 25 C 77 F The chart below gives the resistance of a new coil at various ambient temperatures Ambient Temperature Cold Coil 10 6 45 ohms 40 6 90 ohms 70 7 40 ohms 100 7 90 ohms 4 17 NOTE A cold coil is a coil which had not been operating and is assumed to be at ambient temperature Hot temperatures taken after the unit has been operating in deep modulation for a long period of time may give higher resistance readings 4 Reconnect the modulation valve coil wires to their correct terminal locations 1 8 1 Coil Nut 7 Piston 2 Coil Nut O ring 8 Top Return Spring 3 Coil Housing 9 Valve Body 4 Solenoid Coil 10 Bottom Return Sleeve Spring 5 Solenoid Coil 11 Filter 6 Enclosing Tube Assembly Figure 4 23 Modulating Solenoid Valve b Replacing the Coil Remove locking nut and remove coil after disconnecting wiring When replacing nut torque to a value of 0 41 mkg 3 ft Ib To Replace Valve 1 2 Remove two bolts from suction service valve Store refrigerant in an evacuated container 3 Melt solder at modulating
278. hut off the vacuum pump Wait a few minutes to be sure the vacuum holds f Break thevacuum with clean dry refrigerant gas Use refrigerant that the unit calls for Raise system pressure to approximately 2 psig by monitoring it with the compound gauge g Remove refrigerant using a refrigerant recovery system h Repeat steps e through g one time i Remove the copper tubing and change the filter drier Evacuate unit to 500 microns Close the electronic vacuum gauge and vacuum pump valves Shut off the vacuum pump Wait five minutes to see if vacuum holds This checks for residual moisture and or leaks j With a vacuum still in the unit the refrigerant charge may be drawn into the system from a refrigerant container on weight scales The correct amount of refrigerant may be added by observing the scales Refer to section 4 4 44 ADDING OR CHECKING THE REFRIGERANT CHARGE 4 41 Checking the Refrigerant Charge NOTE 1 Set the controller set point to 259 13 F to ensure that the modulating solenoid valve is fully open when checking operation of unit 2 refrigerant level should only be checked when the unit is running with the modulating solenoid valve fully open container temperature should be approximately 17 35 F or 17 8 0 a Connect the gauge manifold to the compressor discharge and suction service valves b Units equipped with the optional water cooled condenser check charge
279. icable to units with a humidistat 1 13 5 Alarms The alarm philosophy balances the protection of the refrigeration unit and that of the refrigerated cargo The action taken when an error is detected always considers the survival of the cargo Rechecks are made to confirm an error actually exists Some alarms requiring compressor shutdown have time delays before and after to try to keep the compressor on line An example is a low main voltage When the voltage drops over 20 an indication is given on the display but the unit will continue to run If a detectable problem is found to exist the red alarm light will illuminate and its alarm code will be alternately displayed with the set point on the left display For software revision number 106 or greater the red alarm light will illuminate for 20 series alarms only To determine if other alarms exist or have existed the alarm list must be accessed The alarm list will store up to eleven alarms in the sequence in which they occurred When accessing the alarm list or an will appear to the left of the alarm code number The indicates an inactive alarm one that has occurred but no longer exists The AA indicates an active alarm one that is still indicating an improper condition The codes in memory are displayed by pressing the code select key and then an arrow key until Code 00 is displayed in the left window Strt will be displayed in the
280. ical Wiring Schematic Model 69NT40 444 14 Sheet 2 of 2 5 71 10 11 12 13 14 15 16 17 18 19 ZB C 21 EF22 521 522 I EMP2 GRD 95 gt EMG I EF22 I EF23 ES22 ES23 EMP2 9 r TB14 EMG o AE 2953 5 H couHd 1157 L lt ELS34 Ext ney E LuH4 21594 1 LLS3 LLYHS O O o FA 17 t 143 LLWA CLWSTT LLWSTT 1253 BLU TBI qd u 6 TB2 a F3B TB1 FOR OPTION a a N 41 21 1 CIB3 CFROM CIB PROVISION CO raa 19934 05 G glad DR z 1193 Ooo Es t LWA z n 5 bd gt r0 BLK Pa 60 460 3 11 s1 WHT 13 RED BLK TERM END 7 Elsa J 2056 m I Zxu1 I z94
281. icroprocessor Rev 104 or greater software includes code 32 for dehumidification even though the units do not have a humidistat C Provision for heat exchanger X Features that apply to model Revised 8 6 93 1 2 UNI O Im i i j XI 14 Access Panel Fan Motor 2 10 Discharge Service Valve Access Panel Heater Location 11 Compressor Sight Glass TIR Locking Devices 12 High Pressure Switch HPS Recording Thermometer Optional 13 Compressor Motor CP Make Up Air Cover 14 Pressure Gauges Optional Condenser Fan Motor CM 15 Control Box Interrogator Connector 16 Fork Lift Pockets Power Cables and Plug 17 Expansion Valve Location Serial Model No Plate Location 18 Access Panel Evap Fan Motor 1 Figure 1 1 Refrigeration Unit Front 1 3
282. ing Diagram Model 69NT20 274 3 Sheet 1 of 2 5 88 R2 DHBL TEMPERATURE CONTROLLER TB3 ANNUNCTATO LOGIC BOARD DHBR HCS 25 aen 960 HR23 Sor DIGITAL DISPLAY AOA m OOO MZE 8 LLC1 9 BRN 8 PK ms TP 1B17 RED UVT HA BLK 1 0 BOARD TB4 eBR 3 ues Leonor DC lt ay GHE 6 65s HE C11 CB21 pad C12 CB22 CT NS SS NIN N S C13 CB23 Y no 29 3 Eee lt 1 WP 1 CREE I HCS1 4 K I bTT SHLD PRAE 8 sio 263 6363 pp23 205 UH HPS N
283. ing Tube Figure 4 21 Suction Solenoid Valves Sporlan 1 Remove and store the refrigerant charge in an evacuated container Refer to section 4 1 2 Remove the top locknut nameplate and coil assembly 3 Usinga 12 point 1 3 8 inch box wrench loosen the enclosing tube locknut and bleed off remaining refrigerant 4 16 4 Remove enclosing tube and locknut assembly The gasket is inside the enclosing tube 5 Remove seat disc from inside of body and check for obstructions and foreign material 6 Place the seat disc into the valve body with the smaller diameter end facing up 7 Install stem and plunger item 7 Figure 4 21 8 Place the enclosing tube locknut over the enclosing tube Install spacer over enclosing tube making sure it is seated properly in the enclosing tube locknut Tighten enclosing tube locknut to a torque value of 2 78 mkg 20 ft lb Do not overtighten 9 Install coil assembly nameplate and top locknut 10 Dehydrate and evacuate the system Refer to section 4 3 Charge unit with refrigerant per section 4 4 11 Start unit and check operation c Replacing Valve Internal Parts Alco See Figure 4 22 1 Snap Cap 9 Gasket 2 10 Top Plate 3 Installation 11 Capscrews Removal Tool 12 Spring 4 Enclosing Tube Collar 18 Gasket 5 O Ring 14 Diaphragm 6 Enclosing Tube 15 O Ring 7 Spring 16 Body 8 Plunger Figure 4 22 Suction Solenoid Valves Alco 1 Re
284. its packaging and install it on the refrigeration unit Place the old controller into the same packaging that accompanied the new controller Make sure that you package it in the exact same manner NOTE This packaging has been designed to protect the controller from both physical and electrostatic discharge damage during storage and transit Removing and Installing Microprocessor Control Box 1 Remove two screws item 5 Figure 4 26 and swing control panel item 6 down 2 Remove three screws and loosen three other screws to remove cover item 3 3 Disconnect all plug connectors and move wiring out of the way 4 Remove two screws item 1 and slide microprocessor control box item 4 and two spacers item 2 to the left and out NOTE There are two spacers in the right hand side of the electrical box DO NOT LOOSEN these spacers as they are factory positioned 5 Install microprocessor control box by reversing the above steps
285. key ERR The microprocessor performs self check routines If an internal failure occurs an ERR 0 4 will appear on the display This is an indication the microprocessor needs to be replaced 1 21 LO This message will be alternately displayed with the set point whenever the main voltage drops more than 2096 of its proper voltage The unit may operate at even lower voltages but damage to motors may occur 1 13 6 Pre Trip Inspection CAUTION Pre Trip inspection should not be performed with critically controlled cargoes loaded into the container The following is the sequence the microprocessor performs when pre trip inspection is initiated To initiate pre trip push the pre trip key and within 5 seconds the Enter key As each test is successfully completed the word pass will appear in the right hand side display window The individual test code is displayed in the left hand side window If a failure should occur the microprocessor will indicate this by displaying the word fail in the right window The return and supply indicators will also alternately flash This will continue until the user provides further instructions Pressing the down arrow will cause the last test series to be repeated This is recommended to avoid being misled by an erroneous reading Pressing the up arrow will start the next test in the sequence When no problems are encountered pre trip will finish and the unit will return to normal
286. ls E 22 BATTERY BLV 3 395 5 RED 71 CB23 TF OPTION E ARTWORK 69 35 8134 REV A Figure 5 12 Electrical Wiring Diagram Model 69NT20 274 Sheet 2 of 2 5 25 2 J18 L3 J D2 D4 L6 J8 1 68 Q6 D7 03 118 J18 J3 5 5 5 5 K12 LS 12 L8 N 08 8 08 09 A6 B E L4 L9 ES C7 C8 F8 68 K11 E12 65 817 616 17 11 618 F14 06 H18 H J8 611 19 18 15 04 E11 E2 4 LEGEND SYMBOL AMBS C C8 CB2 CL _ 55 5 5 OHBL DHBR _ DHTL DHTR DL FLA HPS HR HTT 1 IRL MDS RM RTS SMV ST 515 TB TC TE TH TN TRANS TS vS DESCRIPTION AMBIENT SENSOR COMPRESSOR CONTACTOR CIRCUIT BREAKER 460 CIRCUIT BREAKER 230V CONDENSER FAN CONTACTOR COOL LIGHT CONDENSER FAN MOTOR COMPRESSOR MOTOR COMPRESSOR SUCTION SENSOR CONDENSER SATURATION SENSOR CURRENT TRANSFORMER DEFROST HEATER BOTTOM LEFT DEFROST HEATER BOTTOM RIGHT DEFROST HEATER TOP LEFT DEFROST HEATER TOP RIGHT DEFROST LIGHT DRAIN PAN HEATER DEFROST TERMINATION THERMOSTAT EVAPORATOR FAN CONTACTOR EVAPORATOR FAN MOTOR FUSE FULL LOAD AMPS HIGH PRESSURE SWITCH HEATER CONTACTOR HEAT TERMINATION THERMOSTAT INTERNAL PROTECTOR IN RANGE LIGHT MANUAL DEFROST SWIT
287. minimum amp draw of 0 60 The quench solenoid valve will de energize if the modulation valve exceeds 60 NOTE Some Models have thermostatic expansion quench valve To see which Models have a solenoid quench valve refer to Section 5 During this cooling mode a running sum of the temperature differential supply air temperature set point is kept When the supply air falls below set point the differential is negative The longer supply air remains below set point the more negative the running sum becomes When the supply air temperature decreases to 0 2 C below set point and the running sum is less than 250 degrees C seconds relays TN and TC de energize shutting off the condenser fan and compressor motors Also the cool light is de energized The evaporator fan motors continue to run to circulate air throughout the container The in range light remains illuminated as long as the supply air is within a tolerance of set point If the unit is in the holding mode neither heating or cooling and the supply air temperature increases to 0 2 0 4 above set point and providing a 6 minute off time has elapsed relay TC energizes to restart the compressor Also at this time the condenser fan motor starts and the cool light is illuminated TO CONTROL TRANSFORMER F3B 5 AMP F3A 5 AMP F TB2 IP CP 5 5 TC PD2INPD20 TN 014
288. move and store the refrigerant charge in an evacuated container Refer to section 4 1 2 Remove snap cap and coil 3 Remove enclosing tube collar item 4 Figure 4 22 using installation removal tool supplied with repair kit item 3 4 Check plunger for restriction due to a Corroded or worn parts b Foreign material lodged in valve c Bent or dented enclosing tube 5 Removetop plate diaphragm spring diaphragm and body gaskets 6 Install new parts assemble in reverse order of disassembly 7 orque the 4 capscrews to 40 inch pounds 8 Do not overtighten enclosing tube assembly Torque to a value of 1 15 mkg 100 inch pounds 9 Remove supplied installation removal tool Install coil and snap cap 10 Dehydrate and evacuate the system Refer to section 4 3 Charge unit with refrigerant per section 4 4 11 Start unit and check operation 4 25 SERVICING THE MODULATING SOLENOID VALVE NOTE When repairing modulating valve with the enclosing tube kit CTD P N 14 50021 01 be sure not to remove items 7 8 amp 10 See Figure 4 23 Proper alignment of these items is achieved only at the factory Coil Checkout Procedure WARNING Make sure power to the unit is OFF and power plug disconnected before replacing the coil 1 Disconnect the modulation valve coil wires from their terminal locations Refer to section 5 2 Using a reliable digital ohmmeter test each lead s resistance to ground If t
289. n Solenoid Valve Open or Closed Model 69NT40 will have a suction solenoid valve SSV to provide maximum refrigerant flow to the refrigeration system This valve will always be open for set points below 109 14 and during temperature pulldown periods unless current limiting restricts its use Codes 04 05 amp 06 Line Current PhaseA B amp C The container is supplied by a three phase electrical system so there are three current sensors in the system The current draw is used for control and diagnostic purposes For control processing the largest of the three current values is used for current limiting purposes For diagnostic processing the current draws are used to determine control unit operations Whenever a heater or a motor is turned ON or OFF the current draw increase reduction for that activity is measured for all three legs of the system Each current draw is then tested to determine if it falls within the expected range of values for the respective unit Failure of this test will result in a pre trip failure or a control alarm indication Code 07 Supply Voltage The supply voltage will be a nominal 230 vac or 460 vac level and will determine which set of current draw values to use for testing The voltage is constantly monitored and a voltage level lower than 20 of its proper voltage will result in LO being alternately displayed with the set point Code 08 Supply Frequency The
290. n valve will close to restrict refrigerant flow until the capacity of the unit and the load are balanced If the temperature drops below set point the compressor will remain running for a few minutes This is to accommodate any initial overshoot which might occur 1 15 After this time and at 0 2 C 0 4 F or greater below set point the compressor will be turned OFF The heaters will be energized if the temperature drops to 0 5 0 9 F below set point The heaters will de energize when the temperature rise to 0 2 C 0 4 below set point The compressor will not restart until the temperature rise to 0 2 0 4 above set point and the 6 minute time delay has been satisfied 2 Operation in the Dehumidification Mode Code 32 ON Optional The dehumidification mode is activated by selecting Code 32 and pressing the Enter key to display The control probe LED supply 1 will flash ON and OFF every second to indicate the dehumidification mode is active Once the Mode is active and the following conditions are satisfied the controller will activate the heat relay to begin dehumidification 1 The humidistat is calling for dehumidification ie HCS is closed and 24 vac is at plug Pd23 2 The pulldown mode is NOT active ie The bypass valve is closed 3 Thecontrol probe ie Supply 1 temperature is less than or equal to setpoint 25 4 he system is in the control mode and the compresso
291. nal Bushing Terminal Mounting Plate Cover Gasket Inner Terminal Block Terminal Screw 04090 N 10 11 12 Figure 4 11 Terminal Mounting Assembly 4 7 COMPRESSOR REASSEMBLY To clean compressor parts use a suitable solvent with proper precautions Coat all moving parts with compressor oil before assembly Refer to Table 4 2 for applicable compressor torque values a Suction and Discharge Valves If the valve seats look damaged or worn replace valve plate assembly Always use new valves because it is difficult to reinstall used discharge valves so that they will seat as before removal Any valve wear will cause leakage for this reason Suction valves are positioned by dowel pins see Figure 4 12 and will assume their original position when reinstalled No two valves are likely to wear exactly the same Never interchange used valves Do not omit the suction valve positioning springs See Figure 4 12 Place the springs so that the ends bear against the cylinder deck middle bowed away from cylinder deck Use new gaskets when reinstalling valve plates and cylinder heads 1 1 Suction Valve 2 Suction Valve Positioning Spring 3 Valve Plate Dowel Pin Figure 4 12 Suction Valve amp Positioning Springs b Compression Rings 1 Depending on date of manufacture the compressor may be equipped with double or single ring pistons This variation may also exist with replacement piston assemblies If dou
292. nal plus Dehumidification Humidity Control Code 32 ON cooling by refrigeration with suction modulation and compressor cycling at low humidities suction modulation and simultaneous electric resistance heating at high humidities 1 Operation in the Conventional Mode Code 32 OFF The supply probe is used for control and is so indicated by the LED on the display board The Perishable temperature range demands high accuracy The system is capable of maintaining supply air temperature to within 0 25 C 0 5 F of the set point temperature setting The compressor is energized continuously to ensure a steady and stable supply air temperature to the container In Perishable range above 10 C 14 F control is maintained by controlling the positions of the solenoid modulation valve SMV and suction solenoid valve SSV on 69NT40 only When pulling down to set point both valves will be open to reduce the pulldown time unless suction solenoid override is activated See section 1 11 for explanation of suction solenoid override The current limit function will override if the current is above the selected value and restrict the valves When the temperature reaches set point the suction solenoid valve will close As the temperature enters the in range temperature tolerance the in range light will energize The controller logic is designed so the solenoid modulating valve will begin to close as set point is reached The modulatio
293. necessary to add some refrigerant to the system Refer to section 4 4 3 4 4 2 Adding Refrigerant to System Full Charge a Evacuate unit and leave in deep vacuum Refer to section 4 3 b Place drum of R 12 on scale and connect charging line from drum to liquid line valve Purge charging line at liquid line valve and then note weight of drum and refrigerant c Open liquid valve on drum Open liquid line valve half way and allow the liquid refrigerant to flow into the unit until the correct weight of refrigerant has been added as indicated by scales Correct charge is noted in Table 1 1 NOTE It may be necessary to finish charging unit through suction service valve in gas form due to pressure rise in high side of the system Refer to section 4 4 3 d Backseat liquid line valve to close off gauge port Close liquid valve on drum Crack connection on charging line at liquid line valve to vent charging line e Start unit in cooling mode Run approximately ten minutes and check the refrigerant charge Refer to section 4 4 1 b 4 4 3 Adding Refrigerant to System Partial Charge a Examine the unit refrigerant system for any evidence of leaks Repair as necessary Refer to section 4 2 b Maintain the conditions outlined in section 4 4 1 c Fully backseat to close off gauge port the suction service valve see Figure 1 3 and remove the 1 4 flare cap d Connect charging line between suction service valv
294. ng Solenoid Valve 4 17 4 26 Thermostatic Expansion 4 18 4 27 Evaporator Fan Motor 1 4 19 428 Humidist t ac E Ie La 4 19 4 20 Microprocessor Controller 4 20 5 ELECTRICAL WIRING SCHEMATIC AND DIAGRAMS 5 1 5 1 Introduction s etm Rd 5 1 Revised 8 6 93 ii Figure 1 1 1 1 1 1 Ne 1 NNN T E 1 BRA 4 6 4 7 4 8 4 9 4 10 4 11 4 12 4 13 4 14 4 15 4 16 4 17 4 18 4 19 4 20 4 21 4 22 4 23 4 24 4 25 4 26 EA A CA QA CA QA Un CA CA Cn CA CA LIST OF ILLUSTRATIONS Refrigeration Unit Front Refrigeration Unit Rear Panels Removed Water Cooled Condenser Receiver Section Control BOX 415 over eeu x Seige Hite eese eee pee d Refrigeration Circuit Frost Pattern on Compressors Microprocessor Control Panel USDA Battery Module ene tete bere TR e en bati ele malus Controller Set Point Below 10 C 14 F Controller Set Point Above 10 C 14 a Heating Mode este
295. ngs over dressed wires keep wire colors together Make sure wires are pushed into crimp fittings as far as possible and crimp with crimping tool h Solder spliced wires with a 60 tin and 40 lead Rosincore solder i Slide heat shrink tubing over splice so that both ends of tubing cover both ends of crimp as shown in Figure 4 20 SENSOR HEAT SHRINK TUBING 2 LARGE HEAT SHRINK TUBING 1 Figure 4 20 Sensor and Cable Assembly j Heat tubing preferably with a flameless heat gun If not available a propane torch will work caution should be taken not to burn the heat shrink tubing or wire insulation Make sure all seams are sealed tightly against the wiring to prevent moisture seepage k Slide large heat shrink tubing over both splices and shrink tubing and heat as in step j l Secure sensor to unit and check sensor resistance as detailed in section 4 23 4 24 SERVICING SUCTION SOLENOID VALVE 69NT40 ONLY a Replacing the Coil NOTE The coil may be replaced without removing the refrigerant 1 Disconnect leads Remove snap cap or locknut Lift off coil See Figure 4 21 or Figure 4 22 2 Verify coiltype voltage and frequency of old and new coil This information appears on the coil housing b Replacing Valve Internal Parts Sporlan See Figure 4 21 2 3 4 SPORLAN 1 Locknut 6 Gasket 2 Nameplate 7 Stem and Plunger 3 8 Seat Disc 4 Locknut 9 Body 5 Enclos
296. nt screw counterclockwise to set the stylus about 0 5 C 0 9 F higher than set temperature Rotate the chart by hand The indicated temperature should be 0 C 32 F NOTES 1 One full turn with the adjustment screw changes the indicated temperature by approximately 5 C 9 2 Overtightening of setscrew may change set temperature 3 Calibration should only be done when bulb temperature is decreasing 4 DO NOT move stylus by hand c Replacing Sensor Probe 1 2 Remove nut and bushing item 9 Figure 4 17 3 Install replacement probe and bushing Seal with silicone before securing to case Remove box from unit 4 Install box into unit 4 mr 1 5 RII 3 6 Voltage Indicator Indicator Test Switch Battery C size Alkaline Sensor Assembly Stylus Stylus Lifter Setscrew Adjustment Bulb and Mechanism Bushing and Nut 04090 Figure 4 17 Saginomiya Recording Thermometer 4 20 RUST PREVENTION AND MAINTENANCE OF PAINTED SURFACES a Rust Prevention Components To prevent corrosion external parts such as compressor cable clamps fasteners and evaporator fan motor should be sprayed with clear urethane CRC Chemicals Part No 2 53 every six months The inside of
297. o calibration Alarm 27 is triggered The controller continues to try to calibrate The alarm will remain active until successful calibration is achieved Alarm 51 List Failures During start up diagnostics the alarm list is examined to determine validity of its contents This is done by testing the set point and the alarm list If the contents are invalid Alarm 51 is set During control processing any operation involving alarm list activity that results in an error will cause Alarm 51 to be set Alarm 51 is a display only alarm and is not written into the alarm list Pressing the alarm reset key will result in an attempt to clear the alarm list If that action is successful all alarms are inactive Alarm 51 will be reset Alarm 52 List Full Alarm 52 is set whenever the alarm list is determined to be full at start up or after recording an alarm in the list Alarm 52 is displayed but is not recorded in the alarm list This alarm can be reset by clearing the alarm list This can be done only if all alarms written in the list are inactive Revised 8 6 93 Alarm 53 Main Voltage Sensor Failure Alarm 53 is caused by a line voltage reading of less than 30V It is a display alarm with no associated failure action While Alarm 53 is active no range testing will be done ofthe line voltage and for current test purposes the voltage will be assumed to be 460 vac Alarm 53 will be reset by any voltage reading great
298. ode 24 Secondary Supply Air Temperature The secondary supply air temperature for four probe systems is measured at the same place as the primary supply air temperature Code 25 Time Remaining Until Defrost This code displays the time remaining until the unit goes into defrost in hours NOTE The following are user selectable functions The operator can change the value of these functions to meet the operational needs of the container Code 26 Defrost Interval Software Revision 108 or lower 402 304 The defrost interval is the time interval between defrost cycles of which there are four possible selectable values 3 6 12 or 24 hours The factory default value is 3 hours During pulldown the interval is automatically set at 2 5 hours The time interval of the first defrost will not begin counting down until DTT is closed At the time DTT closes or at power up if DTT is already closed the time interval to the first defrost cycle is entered into the microprocessor When the interval timer has counted down 2 5 hr the in range status of the unit is checked If out of range the unit immediately goes into the defrost mode Upon termination of defrost the user selected interval ie 3 6 12 amp 24 hr isreset During pulldown from high ambient this cycle will repeat until the unit is in range after 2 5 hours of timer countdown At such time the selected defrost interval time will be completed If the uni
299. ons 1 Unplug dummy plug Item 4 Figure 1 8 2 Connect power cable 2 to USDA battery box module 3 Install with flat side on plug body up CAUTION Anytime power cable is connected to module and the refrigeration unit is not operating the battery will be discharging Therefore the power cable must be unplugged from module except when performing cold treatment recording calibration or charging battery NOTE Stow power cable in dummy receptacle and insert dummy plug in module receptacle to prevent corrosion of terminals when not in use b Battery Check and Charging Plug power cable into module and start unit or apply 24 vac to module If low battery charge light illuminates charge battery by operating unit or applying 24 vac to module until charge light extinguishes Alternatively install a module with a pre charged battery When charging from an external source apply 24 vacto pin PL2 Ground pin PL1 NOTE Normally charging the battery until the light is extinguished will provide adequate power to perform cold treatment calibration without AC power available to unit Depending on the ambient temperature and degree of discharge charging for as little as one hour or as much as 24 hours could be required to extinguish the light Charging for 4 to 6 hours after light is extinguished is required to fully charge battery 1 15 USDA COLD TREATMENT PROCEDURE Sustained cold temperature has been employ
300. ons per minute The water pressure switch will open to de energize the condenser fan relay The con denser fan motor will stop and will remain stopped until the water pressure switch closes The refrigeration unit operating with the water cooled condenser will perform as outlined in section 2 4 except that the condenser fan motor is stopped in all modes To shift to air cooled condenser operation do the following Disconnect the water supply and the discharge line to the water cooled condenser The refrigeration unit will shift to air cooled condenser operation when the water pressure switch closes Refer to section 1 3 1 9 3 Water Cooled Condenser with Condenser Fan Switch CFS For operation of the refrigeration unit with the water cooled condenser with CFS do the following a Connect water supply line to inlet side of condenser and discharge line to outlet side of condenser b Maintain a flow rate of 11 to 26 lpm 3 to 7 gpm Set CFS switch to position when water is sup plied to water cooled condenser This will de ener gize the condenser fan relay The condenser fan mo tor will stop and will remain stopped until the CFS switch is set to position 1 The refrigeration unit operating with the water cooled condenser and CFS switch in position will perform as outlined in section 2 4 except that the condenser fan motor is stopped in all modes WARNING When water flow is below 11
301. oou A Do 88 mg PNIS E3c 12345123 TL GRD ORN 95 2003 USDA ANB Of sv sa 1 19 15 9 64 BATTERY si oc C821 1 1 0 x m E MODULE lt CI CB22 21 RED 2 p La i lv BATTERY 5 5 TRX1 gt apd an RN zoo 092 S26 5 2895 a e 9 69NT35 2207 5 215 ARTWORK lt 9 amp 9NT35 1088 REV Figure 5 48 Electrical Wiring Diagram Model 69NT40 444 19 Sheet 2 of 2 5 97 Revised 8 6 93 ZONE J18 7 13 02 03 98 L9 L6 H8 18 1 69 06 C7 P3 18 18 J18 J3 5 M5 5 L5 K12 L5 C12 L9 N7 C9 F3 07 08 A6 B6 C14 F5 E7 L4 L10 010 18 C7 C9 F9 G9 1 2 6 616 411 412 UOAIUOO0g K9 P11 P11 HS C11 J8 H8 D9 Figure 5 49 Electrical Wiring Schematic Models 69NT40 441 21 amp 69NT40 444 21 Revised 8 6 93 lt BOL MBS nou uu gt gt MDS TRCI TRC2 UV UVT VS WP DES CRIPTION AMBIE COMPR CIRCUIT CIRCUIT CAPILLARY DE SUPERHEATER VALVE R22 OPTION CONDE T
302. oring 1 11 1 10 2 Remote Monitoring Receptacle 1 12 1 11 Suction Solenoid Valve seis nae pP 1 12 112 Frost Formation On Compressors 1 12 1 13 Computer Control Electronics Center 1 13 LISA Briet Description Der eth e 1 13 1 13 2 General Layout of Control Center 1 14 1 13 3 Microprocessor Temperature Control 1 15 1134 Function and Data Codes 1 16 11325 Vasa ERE 1 19 113 6 Pre ip Inspection eer ere ense mo ee m nen ee A 1 21 1 13 7 DataCORDER Optional 1 22 1 13 8 cC mmu nicatiOns eR eg RE ERI 1 23 1 13 9 Setting Function Codes Without AC Power Optional 1 24 1 14 USDA Battery Module Optional 1 25 115 USDA Cold Treatment 1 25 1 16 Nitrogen Feed 2 2 2 1 26 117 Humidistat Optional 2 4 1 26 2 OPERATION 2 1 24 Inspection Before Starting
303. ors from controller and remove ground lead going to I O board to prevent any damage due to electrostatic discharge The Carrier Transicold Computer Control Electronics Center CC EC is a custom designed computer which incorporates electronic intelligence to a Control temperature of supply or return air to ex tremely tight limits by providing modulation refrigera tion control and electric heat control and defrost to en sure continuous conditioned air delivery to the load b Provide dual independent readouts of set point and supply or return air temperatures and in addition the following data Ambient Air Temperature DataCORDER Probe Temperatures Optional Refrigeration Valve Positions open close or open Power Supply Voltage Frequency and Line Currents Refrigerant Suction Discharge Condenser Temper atures Refrigerant Discharge Pressure Compressor Running Hours Time Remaining Until Defrost 1 13 c Provide digital readout and ability to select the fol lowing data Defrost Interval Cor F In Range Tolerance Time Delay Start Interval Start of Unit d Signal malfunction alarm light and or digital display identification of the following Current Limiting Internal or Fuse Protection of Control Circuit Transformer Compressor Evaporator and Condenser Motor High Pressure Cut Out Individual Sensor Failure High Temperature Thermostat Failure of Heaters Defrost Termination Thermo
304. osition No 22 available as a powder in 68 kg 150 Ib and 136 kg 300 Ib 2 Oakite composition No 32 available as a liquid in cases each containing 3 785 liters 4 U S gallon bottles and also in carboys of 52 6 kg 116 Ibs net 3 Fresh clean water 4 Acid proof pump and containers or bottles with rubber hose What You Will Do Summary 1 Drain water from condenser tubing circuit Clean water tubes with Oakite No 22 to remove mud and slime 2 Flush 3 De scale water tubes with Oakite No 32 to remove scale 4 Flush 5 Neutralize 6 Flush 7 Put unit back in service under normal load and check head discharge pressure Detailed Procedure 1 Drain and flush the water circuit of the condenser coil If scale on the tube inner surfaces is accompanied by slime a thorough cleaning is necessary before de scaling process can be accomplished 2 To remove slime or mud use Oakite composition No 22 mixed 170 grams 6 ounces per 3 785 liters 1 U S gallon of water Warm this solution and circulate through the tubes until all slime and mud has been removed 3 After cleaning flush tubes thoroughly with fresh clean water 4 Prepare a 1546 by volume solution for de scaling by diluting Oakite compound No 32 with water This is accomplished by slowly adding 0 47 liter 1 U S pint of the acid Oakite No 32 to 2 8 liters 3 U S quarts of water WARNING Oakite No 32 is an acid there
305. ot Cylinder Head Motor End Cover Crankshaft Oil Bypass Plug Crankcase Oil Pump Drive Segment Oil Level Sight Glass Crankcase Table 4 3 Partlow Bulb Temperature Resistance Chart Table 4 5 Recommended Bolt Torque Values RESISTANCE BOLT DIA THREADS TORQUE MKG TEMPERATURE F OHMS FREE SPINNING 10 12561 00 4 5 2 in Ibs 0 05 5 10579 70 28 1023 0 8944 17 10 23 in Ibs 0 26 5 7588 89 x jk 15 5520 32 3 8 20 ft lbs 2 76 20 4731 71 7 16 31 ft lbs 4 28 25 4068 68 29 IS Sd 30 3509 36 92 ft lbs 32 3310 57 35 3035 99 40 2634 10 82 5 in lbs 45 2291 85 145 2 in lbs 50 1999 52 55 1749 11 47 3 ft lbs 1594 0 2 65 1348 72 136 4 ft lbs 75 1050 14 80 929 87 85 825 21 90 733 93 95 654 12 100 584 19 105 522 79 Table 4 4 Controller and Recorder Sensor Temperature Resistance Chart Temperature Temperature Resistance Centigrade Fahrenheit Ohms SENSOR Resistance Temperature Detector RTD PART NO 12 01090 00 0 32 100 039 25 77 109 9 05 SENSOR PART 12 01119 00 0 32 100 039 25 77 109 7 05 SENSOR RTD PART NO 12 00306 00 0 32 100 039 25 7T 109 9 05 SENSOR Thermistor PART NO 12 00278 01 0 32 32 650 91 25 77 10 000 50 4 24 Table 4 6 Temperature Pressure Chart 12 BOLD FIGURES Inches Mercury Vacuum cm Hg Vac LIGHT FIGURES psig kg cm2 TEMPERATURE PRESSURE T e Koem
306. p gt lt TE2UH rs See 55 RX to LII d See 5 XP CR Quo 22 Satz De C Hab 5 we EJ ol 9 zvdo 51555 8 Q ex G syao4s o ON 1 1 MESZ s 194 gt LWI 149 122 2 X 5 Xe O 10d4 E x nc e L 62222 Mn op 8 o O C2 Cero gt sg 4 L em i SE DX CY xb lt Cues XI mens tezeo e Y Noza DAS Ge CY aA pere lt eem 2 D ngu se fe 1 SIG dee zin 7 88 1 3 i s Loo PALL 8 l 1 amp 2F al O BI LS Re e 8 5 460 3 60 230 3 60 ARTWORK B9NT35 7874 REV C Figure 5 8 Electrical Wiring Diagram Model 69NT40 444 4 Sheet 1 of 2 5 16 HR22 e AA HBL TEMPERATURE CONTROLLER ANNUNCIATOR LOGIC BOARD HR21 PF DHBR 2 5 4 4 2 DIGITAL DISPLAY 5 HR23 E 1 0 BOARD TB3 6 R
307. p EE ARTWORK N 69 35 8414 REV Figure 5 17 Electrical Wiring Schematic Model 69NT40 454 1 Sheet 2 of 2 5 35 10 11 12 18 14 15 16 17 18 19 EF22 814 EMP2 191 11394 r I8Hg r l1Hg _ s CMG EMG CPG 11 1280 i u 7 0 a N oy 2943 gei miim Li a E BR ell HS t 014 1 n poopoo 2n L 5 Nd E R Q L A Linn Netad4 C 7 25351 r 184 1 3 61394 5 8 2143 i 8 CF21 CF23 7812 7815 rs 113294 0109 zou 204 Kea 124 10d4 e 1 2 1 GRD o A04 N 23394 2289 1394 lt s 1 k 12824 11494 Nozad 99909010099 90999 99 p 8d9 2 L8d0 X21 G2 wr 13
308. p for Testing High Pressure Switch d Set nitrogen pressure regulator at 21 kg cm 300 psig with bleed off valve closed e Close valve on cylinder and open bleed off valve f Open cylinder valve Slowly close bleed off valve to increase pressure on switch The switch will open at a static pressure up to 21 kg cm 295 psig If light is used light will go out and if ohmmeter is used the meter will indicate open Slowly open bleed off valve to decrease the pressure The switch will close at 13 kg cm 190 psig 412 SERVICING QUENCH SOLENOID VALVE QV NOTE This section is NOT APPLICABLE to models having a thermostatic expansion quench valve To see which Models have a solenoid quench valve refer to Section 5 Replacing Solenoid Valve Coil The coil may be removed without removing the refrigerant Remove screw lockwasher and coil Disconnect leads and remove coil Verify new coil type voltage and frequency This information appears on the coil housing Place new coil on valve stem and secure same 4 13 REPLACING THE EVAPORATOR COIL AND HEATER ASSEMBLY The evaporator section including the coil should be cleaned with fresh water or steam preferably Another recommendation is to use Oakite 202 or similar cleaner following manufacturer s instructions The two drain pan hoses connected to the drain pan are routed behind the condenser fan motor and compressor The drain pan line s must be open to ensure adeq
309. p switch OFF or defective Circuit breaker tripped or OFF Circuit breaker OFF or defective Control transformer defective TR Fuse blown 3A or 6A Start Stop switch OFF or defective Evaporator fan motor internal protector open Condenser fan motor internal protector open Compressor internal protector open High pressure switch open Low line voltage Single phasing Shorted or grounded motor windings Compressor seized 3 2 UNIT RUNS BUT HAS INSUFFICIENT COOLING Compressor Refrigeration System Compressor valves defective Abnormal pressures Temperature controller malfunction Evaporator fan or motor defective Modulating solenoid valve malfunction Suction solenoid valve malfunction 3 3 UNIT OPERATES LONG OR CONTINUOUSLY IN COOLING Container Refrigeration System Hot load Defective box insulation or air leak Shortage of refrigerant Evaporator coil covered with ice Evaporator coil plugged with debris Evaporator fan s rotating backwards Defective evaporator fan motor capacitor Air bypass around evaporator coil Controller set too low Compressor service valves or liquid line shutoff valve partially closed Dirty condenser Compressor worn Current limit Code 31 set to wrong value REFERENCE SECTION Turn on Check Check Check Replace Check Check 4 14 4 17 4 5 3 7 Check Check 4 5 4 5 4 5 3 7 3 9 4 14 4 25 1 11 4 24 Normal Repair 4 2 4 4 3 6 4 13 4 14 4 27 4 14 4 27 Che
310. pep aight 23 e i PH CONTROLLER 372 114 1516 R 1 8 BOARD LOGIC BOARD r PK 91112 5 7 5131418 B PA PB 112 3141518 1 1891 297 9824 1 22 2133195 23 4186 5156 1121314 R T 3 pj P r c 1 PR3 COMMUNICATIONS A A INTERFACE DISPLAY ASSEMBLY MODULE PF T gt i AA A 1 T 2 ANNUNC I ATOR 7 xl 3 m Uu cl 6 et TCR g 9 E e 5 Hl RRS D B 1 1 1T2 3416112 317 I FOR REORDERING SPECIFY S CTD P N 69NT20 373 137 N 89NT35 1068 REV 69NT35 2197 2 Figure 5 47 Electrical Wiring Schematic Model 69NT40 444 19 Sheet 2 of 2 5 95 Revised 8 6 93 gt lt Z 13 823 21 22 ES21 522 TB3 2 I e EM1 EMG GRD 22 2 522 1 ES23 2 n TB14 4 CF2 de e B ad 2g t 143 LLWa r Z 1N3rr COUH 293 E LHH ELIA l L H LLO 17 53 __ 2933 ASS 2343
311. po R22 DHBL TEMPERATURE CONTROLLER SHR21 Pala ANNUNCIATOR LOGIC BOARD DHBR PE 594 1 9 DHTR DPH DIGITAL DISPLAY AOA 333 000 ILCI 9 8R PK jj TB17 e RED UVT 81 1 0 BOARD TB3 6 R TB49 8R h RTS L _TBl6 e R mut i as 7 GHE C11 VSA4 ale sy 8l C12 VSB4 13 8 4 MAN Se S aa e CT 1147 EXE DOGS F 21 C pes HTT 3 1 0 cce I 0TT PC 4 X 52 3 9 s Hrs 02
312. r ea eget ect pub edet aqa REC AERE C HE OR PS die UNS Vacuum Pump Connections Compressor Model 06DR Oil Bs e Rv ARIS DOE MEI RIPE E Exploded View of Valve Plate Bottom Plate Removed Vane Pump and Bearing Head Gear Oil Pump and Bearing Head Motor End Covent ro a haat AG M RISE ER SS S Crankshaft Assembly RAE E Ves Removing Equalizing Tube and Lock Screw Assembly Terminal Mounting Assembly Suction Valve and Positioning Springs Piston RAN BS pre eee ekle mama ere do mide kc e eee Une ies Sie Typical Setup for Testing High Pressure Switch Evaporator Fan Locating Dimension Partlow Recording Thermometer Saginomiya Recording Thermometer Water Cooled Condenser Cleaning 8 REN EE ha S UR I E Sensor and Cable Assembly Suction Solenoid Valves Sporlan Suction Solenoid Valves Alco Modulating Solenoid Valve Thermostatic Expansion Valve a r eats Microprocessor Control Electrical Wiring Schematic Models 69NT40 444 amp 444 2 Electrical Wiring Diagram Models 69NT40 444 amp 444 2 Electrical Wiring Schematic Model 69NT40 444 1
313. r be oiled however control mechanisms should be sprayed periodically every 60 days with corrosion inhibiting CRC 3 36a or 6 66 or LPS no 2 Close and secure condenser fan screen guard 1 Wind up Key 4 Pinion Shaft 2 Stylus 5 Stylus Lifter 3 SetScrew Figure 4 16 Partlow Recording Thermometer a Instruments for Checking Bulb Temperature The recording thermometer may be equipped with one or two Simpson accessories 344 units each consisting of a thermistor probe and receptacle mounted to instrument case Single probe is attached to the element bulb capillary which senses the container return air temperature If using two probes the other probe is attached to the supply air temperature sensor In the event of a failure with the 344 test lead other instruments for checking bulb temperatures are Simpson Meter CTC P N 07 00013 or Robinair Thermistor Temperature Tester Model 12860 A resistance thermometer with RCA lead and a phono plug at each end may be used to compare bulb temperature and stylus indicated temperature on chart by inserting one end of the lead into receptacle provided on the controller and other end in the meter Always check resistance thermometer before using Refer to para b Ohmmeter 1 Place one probe of ohmmeter in the middle of the receptacle provided on the chart platen Figure 4 16 and ground other probe to unit 2 Note reading of meter and using Table 4 3 convert r
314. r is running This applies power to the defrost and drain pan heaters This added heat load causes the controller to open the modulating valve to match the new total heat load while still holding the supply air temperature very close to set point Opening the modulating valve reduces the temperature of the evaporator coil surface which increases the rate water is condensed from the air passing through the coil Removing water from the air reduces the relative humidity until the HC setting is reached and controller de energizes the heat relay Humidity controller HC will continue to cycle heating to maintain relative humidity below HC setting Two timers are provided in the Dehumidification mode to prevent rapid mode switching and consequent contactor wear They are 1 2 Out of range timer 5 minutes Heater debounce timer 3 minutes The heater debounce timer is activated whenever the contactor status is changed The contactor remains energized or de energized for at least 3 minutes even if the humidistat switch HCS opens or closes This is to prevent rapid cycling of the heat contactor when the humidistat approaches setpoint If the mode is terminated by a condition other than the humidistat switch HCS For example an out of range condition or compressor shutdown the heat relay is de energized immediately The out of range timer is provided to allow the heaters to remain energized during a temporary out of range
315. r section 4 4 1 c After unit is in operation inspect for moisture in system Refer to section 4 9 411 CHECKING OR REPLACING HIGH PRESSURE SWITCH 4111 Replacing High Pressure Switch a Store the refrigerant in an evacuated container Refer to Section 4 3 3 Frontseat both suction and discharge service valves to isolate compressor b Disconnect wiring from defective switch The high pressure switch is located on the center head and is removed by turning counterclockwise See Figure 1 1 c Install new cutout switch after verifying switch settings Refer to section 4 11 2 d Evacuate and dehydrate the compressor per section 4 5 1 0 through 4 5 1 t 4 11 2 Checking High Pressure Switch WARNING Do not use a nitrogen cylinder without a pressure regulator Do not use oxygen in or near a refrigeration system as an explosion may occur NOTE The high pressure switch HPS is non adjustable a Remove switch as outlined in section 4 11 1 through c b Connect ohmmeter or continuity light across switch terminals Ohm meter will indicate resistance and continuity light will be illuminated if switch closed after relieving compressor pressure c Connect capillary to a cylinder of dry nitrogen See Figure 4 14 1 Cylinder Valve and Gauge 2 Pressure Regulator 3 Nitrogen Cylinder 4 Pressure Gauge 0 to 36 kg cm2 0 to 400 psig 5 Bleed Off Valve 6 1 4 inch Connection Figure 4 14 Typical Setu
316. rator fans The alarm will stay active until the transformer protector resets Alarm 23 Compressor Motor Alarm 23 is triggered by the opening of the compressor motor internal protector This alarm will disable all control units except for the evaporator fans and will remain active until the motor protector resets Table 1 5 Alarm Indications ALARM NO ALARM DESCRIPTION AL20 Control Circuit Fuse Open AL21 Evaporator Fan Motor Internal Protector AL22 Auto Transformer Internal Protector AL23 Compressor Motor Internal Protector AL24 Condenser Fan Motor Internal Protector AL25 Compressor High Pressure Limit Safety AL26 All Supply and Return Air Sensor Failure AL27 Probe Circuit Calibration Failure AL51 Alarm List Failure AL52 Alarm List Full AL53 Main Voltage Sensor Failure AL54 Primary Supply Air Sensor Failure AL55 Secondary Supply Air Sensor Failure AL56 Primary Return Air Sensor Failure AL57 Secondary Return Air Sensor Failure AL58 Ambient Temperature Sensor Failure AL59 Heat Termination Thermostat Failure AL60 Defrost Termination Thermostat Failure Closed AL61 Defrost Termination Thermostat Failure Open AL62 Heaters Failure AL63 Compressor Motor Failure eAL64 DataCORDER Low Battery AL65 Current Over Limit eTPOO Approaching DataCORDER Memory Overwrite eTPO1 DataCORDER Overwriting Data ERR Internal Microprocessor Failure LO Low Main Voltage More than 20 e Alarms that are NOT APPLICABLE for some units Alarm 24
317. rigeration oil container and pumps 0 0725 liters 3 5 ounces per stroke when connected to the suction service valve port Also there is no need to remove pump from can after each use When the compressor is in operation the pump check valve prevents the loss of refrigerant while allowing servicemen to develop sufficient pressure to overcome the operating suction pressure to add oil as necessary Backseat suction service valve and connect oil charging hose to port Crack the service valve and purge the oil hose at the oil pump Add oil as necessary Closed System Method In an emergency where an oil pump is not available oil may be drawn into the compressor through the suction service valve CAUTION Extreme care must be taken to ensure the manifold connection remains immersed in oil at all times Otherwise air and moisture will be drawn into the compressor Connect the suction connection of the gauge manifold to the compressor suction service valve port and immerse the common connection of the gauge manifold in an open container of refrigeration oil Crack the suction service valve and gauge valve to vent a small amount of refrigerant through the common connection and the oil to purge the lines of air Close the gauge manifold valve With the unit running frontseat the suction service valve and pull a vacuum in the compressor crankcase SLOWLY crack the suction gauge manifold valve and oil will flow through the
318. right window Press the Enter key to enter this code Now press the up arrow key and the alarm codes will be displayed on the right window in the sequence they Occurred To extinguish the alarm light and in so doing remove all alarms from the alarm list memory press the alarm reset key and within five seconds the Enter key If an active alarm has been corrected the microprocessor may not detect this until the unit has been turned OFF and ON The OFF and ON action will cause a retest of all components Alarms 00 and 01 can only be cleared by first trip starting the unit simultaneously pressing the trip start key and hours since trip start key and then pressing the alarm reset and Enter keys The controller must be in the Normal Display Mode ie Set point and control Probe Display and all alarms must be inactive to clear the alarm light and queue Alarm 20 Control Circuit Fuse Alarm 20 is triggered by the control circuit fuse opening and will cause the software shutdown of all control units This alarm will remain active until the 6 amp fuse is replaced Alarm 21 Evaporator Fan Motor Alarm 21 is triggered by the opening of the evaporator motor internal protector This alarm will disable all control units until the motor protector resets Alarm 22 Auto Transformer Alarm 22 is triggered by the auto transformer internal protector opening and will result in the disabling of all control units except the evapo
319. rol center at more convenient repair areas aboard ship or elsewhere control functions are accessed or viewed through a display panel designed for optimum user friendliness and convenience The display panel is mounted at a 15 degree downward tilt to aid in visibility when stacked in close quarters and consists of a Twelve 12 push energized membrane switches keypad are dedicated to the following functions Revised 8 6 93 Key Function Arrow Up Change set point upward Change codes upward Scan alarm list upward Change user selectable features upward Pre trip advance forward Arrow Down Change set point downward Change codes downward Scan alarm list downward Change user selectable features downward Pre trip repeat backward Return Supply Displays non controlling probe temperature momentary dis play Displays alternate units temperature scale momentary display Clears alarm light and alarm memory when followed by En ter key Code Select Access function codes see ar row up and arrow down Defrost Interval Displays selected defrost inter val Pre Trip Initiate pre trip gt inspection when followed by Enter key Discontinues pre trip in prog ress Manual Defrost Initiates a defrost cycle when pressed In addition a sepa rate toggle switch on the elec tric control box door is pro vided Entering a set point change Extendin
320. rovided for USDA cold treatment purposes Cold treatment recording requires either two or three remote probes that are placed in the cargo at various locations Provision is made to connect these probes to the DataCORDER via receptacles located at the rear left hand side of the unit Four receptacles are provided Three four pin are for the probes and one five pin is provided for the interrogator receptacles are sized to accept a MIL C 5015 14S size plug with a bayonet locking ring The DataCORDER inputs are designed to accept a four wire PT100 RTD resistance temperature detector probe A label on the back panel of the unit shows which receptacle is used for each probe The USDA 1 and 2 probes installed their receptacles The other receptacle is used for the third cold treatment probe as well as the standard DataCORDER return probe Therefore when cold treatment is begun the unit return probe must be removed from this receptacle and installed in a dummy receptacle next to it third cold treatment probe referred to as the RTN probe can then be installed See Figure 1 2 The five pin receptacle is used to latch in the USDA back up battery and for probe calibration at the beginning of the cold treatment These functions are performed by the interrogator with special interconnecting cable and software Contact the Carrier service representative for details The DataCORDER records four probe temperature
321. s C lt KEYWAY 1 SIDE RED o BLU OA 490 gt d gt d gt d gt d gt ni 5 ST 2 2 8 Ghort BB PN Fac 8 ono gt BLU 20 22 24 24 2 EN es es d z Bl ysa mO 79 78 25 5 5258 amp 8 el USDA BATTERY Da zem d lt Na 2 D 2 sg B 55 525 38 2 BI 256 PLATE 5 99 5 99 69NT35 2117 Nef ak ARTWORK 7 69NT35 9964 REV A Figure 5 50 Electrical Wiring Diagram Models 69NT40 441 21 amp 69NT40 444 21 Sheet 2 of 2 5 101 Revised 8 6 93 ZONE SYMBOL DESCRIPTIO J18 AMBS AMBIENT SENSOR I7 L3 COMPRESSOR CONTACTOR D2 CIRCUIT BREAKER 460V D3 CB2 CIRCUIT BREAKER 230V J8 CDV CAPILLARY DE SUPERHEATER VALVE R22 OPTION L9 L6 CF H8 CHT CYLINDER HEAD THERMOSTAT R22 OPTION N18 C COMMUNICATIONS INTERFACE MODULE 7 CL COOL LIGHT WHITE G9 Q6 CM CONDENSER FAN MOTOR C7 P3 cP COMPRESSOR MOTOR 18 CPDS COMPRESSO
322. s c lt R 3 21 ter 1121 vs l 12 22 lt TH 1 4 Jg Vis Li 12 CABLE PT 13 123 jiz ss ay 5 55 a 5 E z U CF OU I Tof ac Ld 111121 F3A 2 1 5 191 123 T IP CP HPS TEE Tc 80 Poa 020 ciLic2 ii ks RM 5 WP 7812 IP CM TB15 AN CF 13 123 9 014 2 TB3 1 IP EM 7814 EE 1 P2 22 061 IPD18 ci ic2 HTT 7816 TH HR P 10010 1 62 Te QV PD17 1 021 55 Hn 7818 RM RM 9 12 D TRL TB4 DTT 7821 RM RM Oo cS D gt 5 MDS i 0 6 TB20 y 1818 PEL 2 312 515 7 ro 2 15 po 1 2 3 4 5 27 rompers 18 19 20 21 24 CONTROLLER PH 1 0 BOARD 372 114 15 LOGIC BOARD r 9 1 215 716 3 4 8 PB Ac PG 12 s s 7 s s 3121201 21 8 24 1 2212313 1815 23 9 5 516 1 2 3 4 R 1 4 HI COMMUNICATIONS ET Pe 1 INTERFACE DISPLAY ASSEMBLY MODULE PF 1 2 lt 5 CI A 4 n n 5 Sen amp 5 8 51 J 1 2 3 4 5 1 2 47 A ARTWORK C 35 8304 REV Figure 5 15 Electrical Wiring Schematic Model 69NT40 444 6 Sheet 2 of 2 5 31 14 15 16 17 18 19
323. s are protected from damage by safety and protective devices listed in Table 1 3 These devices monitor the system operating conditions and open a set of electrical contacts when an unsafe condition occurs Open safety switch contacts of one or more of the following devices IP CM IP CP HPS or IP Trans Auto will shut down the compressor and condenser fan motor The entire refrigeration system will shut down if one of the following safety devices open Circuit Breaker s or b Fuse 6A or c Evaporator Fan Motor Internal Protector s IP EM 1 8 REFRIGERATION CIRCUIT Starting at the compressor the suction gas is compressed to a higher temperature and pressure When operating with the air cooled condenser the gas flows through the discharge service valve into the air cooled condenser Air flowing across the coil fins and tubes cools the gas to saturation temperature By removing latent heat the gas condenses to a hot liquid and then flows to the water cooled condenser receiver which stores the additional charge necessary for low temperature operation Revised 8 6 93 High Pressure Switch Fuse F3A Automatic Reset Refer to paragraph 1 3 i Opens at 5 amps Opens at 178 5 Internal Protector IP Trans 350 10 F Closes at 150 7 C 300 12 F When operating with the water cooled condenser the hot gas flows through the air cooled condenser and into the water cooled conden
324. s manual contains Operating Data Electrical Data and Service Instructions for the refrigeration units listed in Table 1 1 Also Table 1 1 charts some significant differences between these models The unit of lightweight aluminum construction is an all electric one piece self contained cooling and heating refrigeration unit The unit is designed to fit in the front of a container and to serve as the container front wall Fork lift pockets are provided for installation and removal of the unit The unit is complete with a charge of R 12 compressor lubricating oil mode indicating lights temperature controller and is ready for operation upon installation Some units are dual voltage units designed to operate on 190 230 or 380 460 volts ac 3 phase 50 60 hertz power Refer to section 1 5 Other units are designed to operate on 380 460 volts ac 3 phase 50 60 hertz power Operating control power is provided by a single phase transformer which steps down the ac supply power source to 24 volts ac 1 phase control power The temperature controller is a microprocessor solid state controller Refer to section 1 13 Once the temperature controller is set at a desired container temperature the unit will operate automatically to maintain the desired temperature within very close limits The control system automatically selects cooling holding or heating as necessary to maintain the desired temperature within the container 1 1
325. see P6 2 above 1 13 7 DataCORDER Optional Carrier Transicold has developed a microprocessor recorder for container refrigeration units which eliminates the mechanical recorder and paper chart and replaces it with a solid state memory device capable of recording at one hour intervals for a period of 62 days of continuous unit operation or more practically 120 calendar days average use This microprocessor temperature recorder which we have termed the DataCORDER has many additional capabilities which the old mechanical chart recorder did not have The following data is stored and can be displayed in report form Trip Start Date Initial Set Point Temperature Supply Air Temperature Return Air Temperature Remote Probe Temperatures in the Container Cold treatment recording Set Point Temperature Changes Power Outages Alarm Occurrences Defrost Occurrences Pre Irip Occurrences Dehumidification mode Trip start date is activated by simultaneously holding both Trip Start and Hours Since Last Trip Start keys 1 22 The operator can display Hours Since Last Trip Start by just depressing and holding this keypad switch Each one hour interval of the DataCORDER is called a TIC All events that occur are recorded at the TIC following the event Multiple occurrences of the same event between TIC s are not recorded only the last event A special type of recording is p
326. ser The heat flows from the hot gas into the condenser coolant thus cooling the compressed gas and changing the state of refrigerant from a gas to a liquid From the condenser receiver the liquid refrigerant flows by a pressure relief valve which opens if the refrigerant pressure is abnormally high The liquid refrigerant continues through a liquid line shutoff valve filter drier which keeps refrigerant clean and dry a moisture liquid indicator and then to the thermostatic expansion valve As the liquid refrigerant passes through the orifice of the expansion valve some of it vaporizes into a gas flash gas Heat is absorbed from the evaporator air by the balance of the liquid causing it to vaporize in the evaporator coil The vapor then flows through the modulating solenoid valve to the compressor The thermostatic expansion valve bulb on the suction line near the evaporator coil outlet controls the valve maintaining a relatively constant superheat at the coil outlet regardless of load conditions except at abnormally high container temperatures such as during pulldown valve at maximum operating pressure condition 1 10 lt gt 15
327. sh environments The interrogation software for the portable computer is supplied on a 3 5 inch floppy disk This software allows interrogation screen view of the data hard copy report generation cold treatment probe calibration cold treatment initialization and file management With a double sided double density disk the portable computer can store approximately 2995 trip days of data This is equivalent to interrogation of 100 units with an average trip length of 29 9 days With a few menu driven keystrokes either computer can read the DataCORDER A short report on that interrogation can be displayed on the computer to identify key information such as Trip Start Power Outages and Temperature Out of Range conditions The Husky computer comes with an IBM PC compatible program loaded on a 5 1 4 floppy disk which allows the customer to custom install a report format to the user s requirements This installation program is easily loaded into the PC and is menu driven so that the portable computer can be programmed to provide the desired customer report format headings and revised easily by the customer The Husky computer can then be attached to the serial port interface on the 69NT unit to interrogate the DataCORDER The computer has an LCD multi line dot matrix display which is menu driven for ease of use by the operator The Husky computer can store interrogation of up to 100 units for a maximum total of 750 trip days at an
328. sig and b appears after the value to indicate bars Code 14 amp 15 Future Expansion These codes are for future expansion Code 16 Compressor Motor Hour Meter Records total hours of compressor run time For software revision number 106 or greater records total hours in increments of 10 ten hours ie 3000 hours displayed as 300 Code 17 Hours Since Last Trip Start not applicable for some units This is the total number of hours since the last trip start Up to 62 days can be recorded A back up battery Keeps the clock running when power is disconnected Code 18 Software Revision Number The software revision number is displayed Code 19 Serial First 4 of 8 not applicable for some units The first 4 digits of the Serial number for the Microprocessor are displayed Code 20 Serial Second 4 of 8 not applicable for some units The last 4 digits of the Serial number for the Microprocessor are displayed Code 21 USDA 1 Probe Temperature not applicable for some units Displays the temperature of the 1 remote cold treatment probe Code 22 USDA 2 Probe Temperature not applicable for some units Displays the temperature of the 2 remote cold treatment probe Code 23 Secondary Return Air Temperature not applicable for some units The secondary return air temperature for four probe systems is measured at the same place as the primary return air temperature C
329. switch the BMS switch to the 0 position NOTE The controller will give the user two minutes to make a keystroke Ifa key is not pressed within the two minute period the micro will enter an inactive mode and Data Log will appear on the display To exit the inactive mode simply switch the BMS switch to the 0 position To reactivate the controller after switching BMS to the 0 position wait 10 seconds after the Data Log disappears then switch the BMS to position 1 Once the controller is activated if a key is depressed within the initial two minute period the controller will remain active for 30 seconds thereafter i e If a key is pressed 10 seconds after controller is activated Data Log will appear 30 seconds later if no other keys are pressed CAUTION Anytime BMS is in position 1 and the refrigeration unit is not operating the battery will be discharging Therefore the switch must be set to position 0 when battery power is not required 1 14 USDA BATTERY MODULE OPTIONAL Units configured for USDA cold treatment contain either a battery charger module or a C size battery box This allows for temperature and unit status recording while main system power 460 230 is not available or connected The three pin power cable is used to latch in the USDA back up battery box and for probe calibration at the beginning of the cold treatment a Operating Instructi
330. t Figure 4 7 Gear Oil Pump and Bearing Head g Be very careful not to damage the motor windings when removing the motor end cover as the cover fits over the winding coils Remove all capscrews except one in the top of the cover Then while holding the cover in place remove the remaining capscrew Do not allow the cover to drop from its own weight To prevent striking the winding move the cover off horizontally and in line with the motor axis h Remove the refrigerant suction strainer and if it is removed with ease it may be cleaned with solvent and replaced See Figure 4 8 If the strainer is broken corroded or clogged with dirt that is not easily removed replace the strainer Install new gaskets upon reassembly 7 6 5 Valve Capscrew Suction Service Valve Valve Gasket Motor End Cover Motor End Cover Gasket Suction Strainer Strainer Screws and Washers Figure 4 8 Motor End Cover i Block the compressor crankshaft so that it cannot turn Use a screw driver to bend back the tabs on the lockwasher and remove the equalizer tube See Figure 4 10 The slinger at the end of the shaft draws vapor from It may discharge through a tee or a single equalizer tube j Ifthe piston rings extend beyond the cylinder tops the pistons can be pulled through the bottom plate opening after the piston rings are compressed A piston ring squeezer made from sheet metal which almost encircles the periphery o
331. t and install the eight capscrews in the mounting flange 3 Install rotor with key Screw on equalizer tube and lock screw assembly with lock washer and bend over tabs of lock washer Assemble suction strainer to motor and cover and bolt cover to crankcase Assemble valve plates and gaskets Assemble cylinder heads and gaskets Feel if the shaft will turn by hand 4 Install oil suction screen and bottom plate 4 8 CHECKING THE COMPRESSOR OIL LEVEL a To Check the Oil Level in the Compressor 1 Operate the unit in six cylinder cooling for at least 20 minutes 2 Checkthe front oil sight glass on the compressor to ensure that no foaming of the oil is present after 20 minutes of operation If the oil is foaming excessively after 20 minutes of operation check the refrigerant system for flood back of liquid refrigerant Correct this situation before performing step a 3 3 Turn unit off and the correct oil level should be between 1 4 and 1 2 of the sight glass If the levelis above 1 2 oil must be removed from the compressor To remove oil from the compressor follow step d If the level is below 1 8 add oil to the compressor following step b below b Adding Oil with Compressor in System Two methods for adding oil are the oil pump method and closed system method Oil Pump Method One compressor oil pump that may be purchased is a Robinair part no 14388 This oil pump adapts to a 3 785 liters one U S gallon metal ref
332. t drifts out of range after the 2 5 hours of countdown but prior to completion of the selected interval the unit will immediately go into defrost Upon termination of defrost the selected interval will be reset If DTT opens at any time during the timer count down the interval is reset and the countdown begins If DTT has failed open 1 AL61 is active and the primary return sensor temperature is less than 10 C the interval timer countdown begins The interval timer is reset if the return air temperature rises above 24 C See section 2 4 3 Code 26 Defrost Interval Software Revision 110 502 503 The defrost interval is the time interval between defrost cycles of which there are four possible selectable values 3 6 12 or 24 hours The factory default value is 3 hours During pulldown the interval is automatically set at 2 5 hours The time interval of the first defrost will not begin counting down until DTT is closed At the time DTT Revised 8 6 93 closes or at power up if DTT is already closed the time interval to the first defrost cycle is entered into the microprocessor When the interval timer has counted down 2 5 hr the in range status of the unit is checked If out of range and the control temperature is greater than 5 C above set point the unit immediately goes into the defrost mode Upon termination of defrost the user selected interval ie 3 6 12 amp 24 hr is reset During pulldown
333. t o CI 22 __ RED TH 9 LE BATTERY 5 5 OD d NN N lt lt 538 5 53 385 cer PLATE aet 00 ttn amp 9NT35 2447 216 ARTWORK 40 B9NT35 1318 REV Figure 5 54 Electrical Wiring Diagram Model 69NT40 441 24 Sheet 2 of 2 5 109 Revised 8 6 93
334. t start when connected to a 190 230 vac power supply check the following a Make sure circuit breaker CB 2 is in the ON position If CB 2 does not hold in check voltage supply b Check to see if the transformer internal protector IP AUTO TRANS is closed Allow a reasonable length of time for transformer to cool down The transformer includes two 2 internal protectors Only one is wired into the system as the second protector is a spare c Check for Continuity Across the Internal Protector IP AUTO TRANS 1 2 Disconnect white wires 1 and 2 from terminal board 3 Check for continuity across the internal protector IP If IP is open and will not reset connect wires 3 and 4 18 gauge to terminal board Check to see if unit will start d Ifthe internal protector and circuit breakers CB 1 and CB 2 are good check the transformer Use a voltmeter and with the primary supply circuit ON check the primary input voltage 230 vac Next check the secondary output voltage 460 vac at the voltage selector switch The transformer is defective if voltage is not available 4 23 TEMPERATURE CONTROLLER AND RECORDER SENSOR CHECKOUT PROCEDURE a Placethe sensor sensing bulb in 0 32 F ice water bath Ice water bath is prepared by filling an insulated container of sufficient size to completely immerse bulb with ice cubes or chipped ice then filling voids between ice with water and agitating until mixture
335. tating lifter counterclockwise until stylus lifter locks in position and stylus has made contact with chart Then close door e Open Saginomiya recording thermometer if so equipped door and do the following 1 Check Chart drive battery condition Refer to section 4 19 2 Liftstylus pen by pushing in the stylus lifter and rotating the lifter clockwise raising stylus at same time until lifter locks in position 3 Install new chart on recording thermometer making sure chart is under the four corner tabs Release stylus lifter by pushing down and rotating lifter counterclockwise until stylus lifter locks in position and stylus has made contact with chart Then close door f Open control box door Check for loose electrical connections or hardware g Check color of moisture liquid indicator h Check oil level in compressor sight glass i Start refrigeration unit Refer to section 2 3 2 2 STARTING AND STOPPING INSTRUCTIONS CAUTION Make sure that the unit circuit breaker s CB and the start stop switch are in the OFF position before connecting to any electrical power source a Starting the Unit 1 Refer to Inspection section 2 1 2 Check power source for proper voltage Connect unit power plug and turn main power ON CAUTION On units with condenser fan switch CFS CFS must be in position 1 before starting unit unless cooling water is being supplied to water cooled condenser at a rate of
336. the refrigerant flow through the valve one complete turn will change the setting approximately 1 7 C 3 F 3 Reassemble the valve and then start the unit 4 When the unit has stabilized operation for at least 20 minutes recheck superheat setting 5 Ifsuperheat setting is correct remove gauge and thermocouple Secure panel in position 4 27 EVAPORATOR FAN MOTOR CAPACITORS The two speed evaporator fan motors are of the permanent split capacitor type The motor is equipped with one capacitor used in the high speed circuit and another capacitor is used for the low speed circuit a When to check for a defective capacitor 1 Fan motor will not change speed For example controller settings above 10 14 F cause the motor to run in high speed Controller settings below 10 14 cause the motor to run in low speed 2 Motor running in wrong direction after checking for correct wiring application b Removing the capacitor WARNING Make sure power to the unit is OFF and power plug disconnected before removing capacitor s 1 The capacitor located on the motor and above the evaporator fan deck may be removed by two methods a If container is empty open upper rear panel of the unit and capacitor may be serviced after disconnecting power plug b full turn the unit power OFF and disconnect power plug Remove the 2 evaporator fan motor access panel See Figure 1 1
337. the user to examine all alarms that are written in the list To notify the user ofthe top of the list Strt is displayed By using the arrow keys the entire list may be displayed Each alarm number will be preceded by a status indication for inactive alarm and for active alarm See Alarm section Code 01 Suction Modulation Valve Opening 90 The suction modulation valve SMV is a normally open valve which restricts flow of refrigerant to the compressor when energized by a pulse width modulated PWM output The amount of closing of the valve is proportional to the applied current over the range of 0 2 1 16 to 1 3 Amps The valve remains 100 open below 0 2 and is 0 open at 1 3 A Code 02 Quench Valve Open or Closed NOTE Some Models have a thermostatic expansion quench valve so Code 02 is NOT APPLICABLE To see which Models have a solenoid quench valve refer to Section 5 Modulating controllers shall also operate a Quench solenoid valve OV to supply a minimum flow of refrigerant to the compressor suction inlet to assure the required motor cooling and maintain the compressor discharge temperature below a maximum value The quench valve is opened whenever the suction solenoid valve is closed and the suction modulation valve is less than 40 open If the suction modulation valve is more than 60 open or the suction solenoid valve is open the quench valve is closed Code 03 Suctio
338. uate drainage Replace Evaporator Coil a Store the refrigerant charge in an evacuated container by attaching a line to the liquid line valve See Figure 1 3 and refer to section 4 1 b With power OFF and power plug removed remove the screws securing the panel covering the evaporator section upper panel c Disconnect the defrost heater wiring d Disconnect the klixon from the coil The defrost termination thermostat DTT is located on the middle coil support as shown in Figure 1 2 e Remove middle coil support f Remove mounting hardware from the coil Unsolder the two coil connections one at the distributor and the other at the coil header NOTE It may be necessary to raise the fan deck to break the solder connections to raise coil h After defective coil is removed from unit remove defrost heaters and install on replacement coil i Install coil assembly by reversing above steps j Leak check connections per section 4 2 Evacuate the unit per section 4 3 and add refrigerant charge per section 4 4 2 4 14 REPLACING THE AND MOTOR ASSEMBLY The evaporator fans circulate air throughout the container by pulling air in the top of the unit The air is discharged through the evaporator coil where it is either heated or cooled and then discharged out the bottom of the refrigeration unit into the container Refer to section 14 fan motor bearings are factory lu
339. upro nickel coil The refrigerant vapor is admitted to the shell side and is condensed on the outer surface of the coil Rust scale and slime on the water cooling surfaces inside of the coil interfere with the transfer of heat reduce system capacity cause higher head pressures and increase the load on the system By checking the leaving water temperature and the actual condensing temperature it can be determined if the condenser coil is becoming dirty A larger than normal difference between leaving condensing water temperature and actual condensing temperature coupled with a small difference in temperature of entering and leaving condensing water is an indication of a dirty condensing coil To find the approximate condensing temperature with the unit running in the cooling mode install a gauge 0 to 36 2 kg cm 0 to 500 psig on the compressor discharge service valve For example if the discharge pressure is 10 3 kg cm 147 psig and referring to Table 4 6 12 pressure temperature chart the 10 3 kg cm 147 psig converts to 46 C 115 If the water cooled condenser is dirty it may be cleaned and de scaled by the following procedure a Turn unit off and disconnect main power b Disconnect water pressure switch tubing by loosening the two flare nuts Install 1 4 inch flare cap on water cooled condenser inlet tube replaces tubing flare nut De scale tubing if necessary What You Will Need 1 Oakite comp
340. value of the main power frequency is displayed in Hertz Code 09 Ambient Air Temperature The ambient sensor AMBS measures the temperature outside the container It is a factor in determining which speed the condenser fans will use optional and it is also used as a diagnostic factor for determining the system load For locations of sensor see Figure 1 3 1 17 Code 10 Compressor Suction Temperature Measured just prior to the compressor suction service valve the compressor suction temperature is used for pre trip diagnostics as an indicator of proper quench operation For location of compressor suction sensor CPSS see Figure 1 3 Code 11 Compressor Discharge Temperature not applicable for some units The compressor discharge temperature is measured near the compressor discharge valve For location of compressor discharge sensor CPDS see Figure 1 3 Code 12 Saturated Condenser Temperature not applicable for some units The saturated condenser temperature is measured on a condenser return bend It is also used to calculate discharge pressure For location of condenser saturation sensor CSAS see Figure 1 3 Code 13 Compressor Discharge Pressure not applicable for some units Calculated the temperature from saturated condenser Pressure is displayed in units of psig when code 27 is set to F and units of bars when code 27 is set to appears after the value to indicate p
341. ve to moisture and will gradually change color in direct relation to an increase or decrease in the moisture content of the system The safe caution and unsafe system operating conditions are then easily determined by matching the element color with the colors displayed on the reference label To change indicator or lens a Pump down the unit per section 4 1 and install new indicator or lens b Evacuate the unit per section 4 3 and add refrigerant charge per section 4 4 c Start unit and after twelve hours re check indicator If indicator does not indicate a safe condition pump unit down and change filter drier Refer to section 4 10 4 10 CHECKING OR REPLACING THE FILTER DRIER If the sight glass appears to be flashing or bubbles are constantly moving through the sight glass the unit may have a low refrigerant charge or the filter drier could be partially plugged To Check Filter Drier a One test for a restricted or plugged filter drier is by feeling the liquid line inlet and outlet connections of the drier cartridge If the outlet side feels cooler than the inlet side then the filter drier should be changed b Another test is that the moisture liquid indicator shows moisture in the system Refer to section 4 9 To Replace Filter Drier a Store the refrigerant in an evacuated container and replace filter drier Refer to section 4 1 b Evacuate the unit per section 4 3 and charge unit with refrigerant pe
342. wing 1 Check channels or bars on floor for cleanliness Channels must be free of debris for proper air circulation 2 Check container panels insulation and door seals for damage Effect permanent or temporary repairs 3 Visually check evaporator fan motor mounting bolts for proper securement 4 Check for dirt or grease on evaporator fan or fan deck and clean if necessary 5 Check evaporator for cleanliness obstructions Wash with fresh water Refer to section 4 13 6 Check defrost drain pans and drain lines for obstructions and clear if necessary Wash with fresh water 7 Check panels on refrigeration unit for loose bolts and condition of panels Make sure T I R devices are in place on access panels b Check condenser coil for cleanliness Wash with fresh water Refer to section 4 16 c Check position of fresh air makeup vent cover Operator must determine if fresh air makeup vent cover is to be opened or closed d Open Partlow recording thermometer if so equipped door and do the following 1 Manually wind clock on recording thermometer key is located in a clip KEY MUST STAY WITH THE THERMOMETER 2 Liftstylus pen by pushing in the stylus lifter and rotating the lifter clockwise raising stylus at same time until lifter locks in position 3 Install new chart on recording thermometer making sure chart is under the four corner tabs Release stylus lifter by pushing down and ro
343. y WARNING Do not attempt to remove power plug before turning OFF voltage switch VS start stop switch ST unit circuit breakers CB 1 And CB 2 and external power source b To Place Unit on 190 230 vac Power Supply 1 Make sure voltage switch VS is in the OFF position Make sure start stop switch ST on control panel and circuit breakers CB 2 is in position 0 OFF See Figure 1 4 2 Connect 190 230 vac power cable plug black cable Place voltage switch VS in the 230 v position Place circuit breaker CB 2 in position 1 Close and secure control box door and then place the start stop switch ST in position 1 c To Place Unit on 380 460 vac Power Supply 1 Make sure voltage switch VS is in the OFF position Make sure start stop switch ST on control panel and circuit breaker CB 1 is in position 0 OFF 2 Connect 380 460 vac power cable plug yellow cable Place voltage switch VS in the 460 v position Place circuit breaker CB 1 in position 1 Close and secure control box door and then place the start stop switch ST in position 1 1 8 1 6 FRESH AIR MAKEUP VENT The purpose of the vent is to provide ventilation for commodities that require fresh air circulation and must be closed when transporting frozen foods Air exchange depends on static pressure differential which will vary depending on the container and how the container is loaded The chart below
344. zeroing a Loosen set screw item 3 Figure 4 16 and zero thermometer by turning pinion shaft item 4 Lengthening pinion shaft counterclockwise raises stylus indicated temperature reading shortening shaft clockwise lowers stylus reading Then retighten set screw b Reset control at 0 C 32 F start the refrigeration unit and repeat accuracy check After temperature stabilization recording thermometer should be within 0 3 C 1 2 F limits e Replacing Recording Thermometer Element Bulb and Capillary The element is mercury filled and the temperature pressure of the element controls the stylus which moves across the chart in response to temperature changes as sensed by the bulb located in the evaporator supply air The element flange contains three O rings Care should be taken to install the new element flange without damaging the O rings It is possible for a mercury leak to develop at the flange if O ring damage occurs The stylus will continue to fall container temperature will actually be higher if a leak develops in the flange capillary or bulb To replace the recording thermometer element 1 2 Remove upper back panel Remove bulb clamps securing bulb to unit Turn unit OFF and disconnect power source 3 Remove two flange screws from recording thermometer and feed capillary and element through the unit 4 12 4 Push replacement bulb end and capillary through the unit 5 slots wit

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