Home

OPERATION AND SERVICE 69NT40--511--300 to

1. D E F J K L M N P R T 230 3 60 460 3 60 48959 80 10 4 50 oR oR 380 3 50 oR 190 3 50 8 4 DVM 380 3 50 POWER PLUG 11 4 op POWER PLUG 50 CABLE CH CABLE 082 B C x Ta Ly 1 RT rd xwemgpH 11
2. B c D E F 6 J L M N P R T 230 3 60 460 3 60 480 5780 10 4 50 R 380 3 50 190 3 50 8 4 380 3 50 POWER PLUG 11 4 cgi POWER PLUG 50 CH CABLE 2 TBU x B1 mn wur L1 A 1 TH A 1 Vv JH 11 21 Lil fri 24 Hale 2 52 82 1 12 2 52 5
3. eno MK f MB DISPLAY MODULE OD SEOOGOGOOOEOOOGOO i he ek sb MO 000 m gt MA bpbbbbgb rrr rrcc AO HG NA OR A lt 17 5 B 12 MBS ee OG ali 2 8 510 COMMUN LCAT IONS CONTROLLER g 5 8 INTERFACE MB11 MODULE 12 MAINS POWER 4 FUSE S COMBINATION d e ques 2 AT SENSOR ONLY IF EQUIPPED sx Eum e E 5 4 35 82 5 4 E MB16 s E 5 Qe Ga i N m 7 0 Lamao 106703
4. DHTL ECG3 A HRT HRT2 DHBL ORN A r ECLI ICR Ecxi lt c ark c EcL3 A HRT1 DHBR ECS2 PR3 Eo2 K D ECX1 ECW2 K H kar 3 T2 T11 T4 T3 T2 T1 P2 P1 IRT3 DPH ECD3 PRI TRX2 VVVVVVY Y gt COMBINATION SINGLE SENSOR ED5 Y mas GEED ALGEED BA SENSOR CONFIGURATION Fy T Y T Y ED8 51 ebSeekess g GRD PR SFR on ER amp amp a 04 T7 83 55 X i 9 T 11 mn 2 2 2 lt lt 2 E E2A2 9 2 t T d n KG a an are WOO Cae MHA 9 a i a 9 E Eug C ox gt lt 5 a8 Plaga 200 ee 1 5 S 4 4 NEN SOL 5000 koeee e a 7 0260302300 Gao N AN m c 9000 GG A sess 9 96 isse 54 oc Usi e jagga 23322306 rS
5. x tija 1 R1 lt BLK CR SEE Figure 7 9 Cherra 12 2 s24 wmr Gt ICF 14 9 2 tal c gt ECTS 5 4 cFT3 lt 2 s teon DVR E BRIS LEN D pEcx2 e 4560 3 60 450 3 60 E ECW2 5n 380 3 50 380 5 50 ICF MAY BE IN 2 CH1 CONTROL BOX GRD D AWW CH32 BK 1 Ci ee CCH mane mane 1 4 V s 9 0 WHT3 RED 1 13 3 c L3 A B 2 ATE ATE e 6RD GRN PL E HPS 239 3289 SPT DPT oR TEE s Uo 190 3 50 BRN 1 gt PDR To pa jt WHA1 NOTE WHEN EB ED BM OR CFS IS ARE INSTALLED WIRE DESTINATIONS CHANGE FROM THE STANDARD ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS XXXT Figure 7 5 WIRING DIAGRAM Normal Evaporator Fan Operation Units with Dual Capacitor Evaporator Fan Motors Sheet 1 of 2 T 285 7 6 FOR UNITS WITHOUT ELECTRONIC CR ONLY FOR CR WIRING SEE FIGURE 7 7
6. 6 7 Figure 6 11 Motor End Cover 6 7 T 285 vi LIST OF ILLUSTRATIONS continued FIGURE NUMBER Page Figure 6 12 Equalizing Tube and Lock Screw Assembly 6 8 Figure 6 13 Crankshaft Assembly 6 8 Figure 6 14 Suction Valve amp Positioning Springs 6 8 Figure 6 15 Piston RING een ts accu 6 8 Figure 6 16 High Pressure Switch Testing 6 10 Figure 6 17 Water Cooled Condenser Cleaning Forced Circulation 6 11 Figure 6 18 Water Cooled Condenser Cleaning Gravity Circulation 6 12 Figure 6 19 Thermostatic Expansion Valve Bulb 4 6 13 Figure 6 20 Hermetic Thermostatic Expansion Valve 6 13 Figure 6 21 Hermetic Thermostatic Expansion Valve Brazing Procedure 6 13 Figure 6 22 Thermostatic Expansion Valve 4 6 14 Figure 6 23 Evaporator Fan Assembly 6 15 Figure
7. 4 amp ov OFF o Compressor Contactor Heater Contactor Display Module Communications Interface Module Controller DataCORDER Module Controller Key Pad Emergency Defrost Light Start Stop Switch Remote Monitoring Receptacle Manual Defrost Switch if equipped Condenser Fan Switch Emergency Defrost Switch h 2 1 8 Communications Interface Module The communications interface module is a slave module which allow communication with a master central monitoring station The module will respond to communication and return information over the main power line Refertothe master system technical manual for further information 16 15 14 13 12 11 10 9 13 Emergency Defrost Fuse 14 Emergency Bypass Switch 15 Controller Battery Pack 16 Interrogator Connector Box Location 17 Control Transformer 18 Fan Contactor E1 19 Evaporator Fan Contactor S1 20 Evaporator Fan Contactor S2 or EF 21 Evaporator Fan Contactor E2 or ES 22 Condenser Fan Contactor 23 Circuit Breaker 460V 24 Current Sensor Module Figure 2 6 Control Box Section T 285 2 2 REFRIGERATION SYSTEM DATA Number of yind o y CFM a Compressor Motor Assembly b Expansion Valve Superheat c Heater Termination Thermostat d High Pressure Switch e Refrigerant Charge Oi
8. 2 praed M C ai re 1 maa tls 3 5 505 5 DTS HIT pama 5 1 06 23 G2 Gp anes E D css 2 ED4 FED ED cess A MC BLK 2 4 XO 777 BLU arrneo 63 GX Gy pe E ED we Y an I MP2 YQ 5 cos OSG NOTE RM MAY BE G3 DEA 5 RO OUTSIDE BOX 30096 x 11 F3 45 TRX2 H1 C1B BMDC SDON A PHASE 1 BMON reo 5 _ FUSE lt Sst i Hsc 2 Co ED EQUIPPED HA aye 5 2 Oa 14 Reo 9 5 FUSE Qe 5 Garp RZ LOCATING TAB 2 5 IF EQUIPPED Rest 23 1 E E ON BOTTOM 65r 3 PHASE 3 2 FUSE NICRA HPR2A a MN 1 S ASHES 1 051 1 3 1CR L Bae KA 50811 2 Cy irs BMS1 A EB4 lt 9 162 gt iero amp 2 pase Leray PRI 77 rera ER XE 5 T les ae 5 8 E ud 5052 KEYWAY SIDE 4 B ELA DE BMS2 RA AA AINA T TTA RRS 4
9. 4 6 4 10 2 Sequence Of Operation Perishable Mode Heating 4 7 4 10 3 Sequence Of operation Frozen Mode 4 7 4 10 4 Sequence Of Operation Defrost 4 7 4 11 EMERGENCY OPERATION 2 4 9 4 11 1 Emergency Bypass Operation 4 9 4 11 2 Emergency Defrost Operation 4 9 iii T 285 TABLE OF CONTENTS Continued PARAGRAPH NUMBER Page TROUBLESHOOTING 5 1 5 1 UNIT WILL NOT START OR STARTS THEN 5 1 5 2 UNIT OPERATES LONG OR CONTINUOUSLY IN COOLING 5 1 5 3 UNIT RUNS BUT HAS INSUFFICIENT COOLING 5 2 5 4 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING 5 2 5 5 UNIT WILL NOT TERMINATE HEATING 5 2 5 6 UNIT WILL NOT DEFROST PROPERLY 5 2 5 7 ABNORMAL PRESSURES COOLING 5 3 5 8 ABNORMAL NOISE OR VIBRATIONS 5 3 5 9 CONTROLLER
10. FCR TRX2 MAS 11 MAS GG OD CRS5 GG CR4 ui e SR Coy ay 5 ICT 12 222 CONTROLLER m DO MB ORO 49 5 OGA 55 2 oe Go 2 2 0X0 el 1 eee OGO d e e e 69 2 3 2 2 1 5 lt 3 6 OO als DDO DOQ SEE Figura 7 6 Y SHEET 1 5 c ST 5 KB 999 BATTERY OOD KS 6 O i NOTE STANDARD CONTROLLER JUMPERS MA3 TO MA7 AND MA9 TO MA11 SEE Figure 7 2 SHEET 1 ARE REMOVED IN THIS APPLICATION T 285 Figure 7 9 WIRING DIAGRAM Electronic Partlow Temperature Recorder Air Cooled Condenser Section 2 4 Alarm 3 6 3 10 3 11 3 17 3 26 Arctic Mode 3 4 Autotransformer 6 18 B Bulb Mode 3 5 C Capacitors 6 16 Checking Superheat 6 13 Communications Interface Module 3 10 3 11 6 32 Composite Control Box 6 29 Compressor 6 5 Compressor Section 2 3 Condenser Coil 6 10 Condenser Pressure Control 3 4 Configuration Soft
11. RMB 1 4 0 CX cP2 1 G X a X CCH N O e p WHA1 gt gt WHTT r7 Qin 99 Bnth2 5 x iurfri Po n jg riip CPG 7 2 a Y 8 OO N QX A X 5 Cd D O 2 ac eG 5 55 SE 5605 DD NE EUREN ay 5 s 5 MI e mies Mj 5 ESR 56425 eek b gg 58 gs 3 zou 5 8 t 22 D d 4 8 N 2 Y Y n N E a 1 gt v 292 gt I DES j HPR TRX2 t CB21 WIRES TO TR X2 Q2 WHT EDL DF TFC P TFC CIB1 GRD CHA2 RMA 12 2 HRA2 CR8 CHL3 CHL 1 CB21 CHL2 CB22 HRA2 HPT5 amp DHH lt C
12. 2 5 3 5 10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR 5 4 5 11 THERMOSTATIC EXPANSION VALVE MALFUNCTION 5 4 5 12 AUTOTRANSFORMER MALFUNCTION 5 4 5 13 WATER COOLED CONDENSER OR WATER PRESSURE SWITCH 5 4 SERVICE 12 sce Sed ated oes Rae eles ae ee eet ine ae oe 6 1 6 1 SECTION LAYOUT pony ERA REED Eee RE ELA RE 6 1 6 2 SERVICE VALVES cio Eu Tex ee en iyu a aad 6 1 6 3 MANIFOLD GAUGE SET census ade gx ea x ER Ee em 6 1 6 4 PUMPING THE UNIT DOWN 6 2 6 5 REFRIGERANT LEAK CHECKING 6 3 6 6 EVACUATION AND DEHYDRATION 6 3 6 631 General Der Due 6 3 6 6 2 eeepc e cod a be a ee Medos 6 3 6 6 3 Procedure Complete 6 3 6 6 4 Procedure Partial System 6 4 6 7 REFRIGERANT CHARGE 2 p 6 4 6 7 1 Checking the Refrigerant Charge
13. 4 2 4 4 1 Water Cooled Condenser with Water Pressure Switch 4 2 4 4 2 Water Cooled Condenser with Condenser Fan Switch 4 3 45 CONNECT REMOTE MONITORING RECEPTACLE 4 3 4 6 STARTING AND STOPPING INSTRUCTIONS 4 3 4 6 1 Starting the Rt Sle Rer RC EACH RR HL A 4 3 4 6 2 Stopping the Unit 2222 cee eb reir EI Rp bee rix E Matera p 4 3 4 7 _ START UP INSPECTION 55 vane ite grae dert EA 4 3 4 7 4 Physical e meet e ed ee 4 3 4 7 2 Check Controller Function Codes 4 3 4 7 8 Start Temperature Recorder 4 3 4 7 4 Complete Inspection 1 4 3 4 8 PRE TRIP BIAGNOSIS te edt Tuck ette dtu idees eee 4 3 49 OBSERVE UNIT OPERATION 4 4 4 9 Grankca se Heater etalon ELEM ME EEUU RR 4 4 4 9 2 Probe ChecK 102 025 ten RITARDI IEEE A IET 4 5 4 10 SEQUENCE OF OPERATION 2 4 5 4 10 1 Sequence Of operation Perishable Mode Cooling
14. anu caua uon uu un I TETUER LS ANA OOA DA OON UT LE TE HE I LH E E E I I E IT LE EET HIT HIE IH Oe 4 tnn va m mmm pn TE ANOA HEIL HH E LL A A WOONDE JUI ILI UIT AH AH HH EIU T m mEIEPEMeTM T um Tn ES 5 5 5 E e 5 9 M gt mm 2 2 Fi Help 234567aa dox ML2i 1234567 04163552 08 22 2000 09 05 2001 A Start a ViewD ata Graph BY Microsoft Word Documenti Y 1 41 Figure 3 5 Standard Configuration Report 3 9 T 285 3 6 4 Logging Interval dCF03 The user may configure four time intervals between data recordings Data is logged at exact intervals in accordance with the real time clock The clock is factory set at Greenwich Mean Time 3 6 5 Thermistor Format dCF04 The user may configure the format in which the thermistor readings are recorded The low resolution is a 1 byte format and the normal resolution is a 2 byte
15. 21 Ecx2 a E JOH mzn JOUY ECJ1 Gy iere d Ecos PRI EST ECXI 2 QAO EST oqo COMBINATION SINGLE SENSOR md GRD SENSOR CONFIGURATION ECES D A gt X TCC TFC LLL 5 EsT1 en g d d d GRD PR2 amp 2 c CFLtN HA1 TIT Trt VASAS A WHA1 gt gt WHTT 4 f y 5 8 1 5 l 1 45 2 lt 13 h HiP24 DG KB2 PDR XO DOG lt DO KO 9 D HPT6 3 z o o OXON v Gci OX Y Y A Y HPR gt E oN TRX24 5 2 M WIRES TR X2 EDL DF TFC CIB1 GRD CHA2 RMA 12 EFA2 HRA2 2 5 amp DHH Ares 2j REA m 21 5 17 BLK HLA CBI 12 CIAS aes 3 2 WHT LU CHL3 CHL2 CB22 CHL 1 CB21 C
16. 6 4 6 7 2 Adding Refrigerant to System Full Charge 6 4 6 7 3 Adding Refrigerant to System Partial Charge 6 4 6 8 COMPRESSOR iR Ee REA EUR ER E Rex bU Re Redde Re RERO RR d 6 5 6 8 1 Removal and Replacement of Compressor 6 5 6 8 2 Compressor Disassembly 6 6 6 8 3 Compressor 6 8 6 8 4 eet erties te Pee ER 6 8 6 8 5 Installing the Components 6 9 6 8 6 Compressor Oil 6 9 6 9 HIGH PRESSURE SWITCH 6 10 6 9 1 Replacing High Pressure 6 10 6 9 2 Checking High Pressure Switch 6 10 6 10 CONDENSER pao gue P Dex le ue ar gate 6 10 6 11 CONDENSER MOTOR ASSEMBLY 6 10 6 12 WATER COOLED CONDENSER CLEANING 6 10 6 13 EIETER DRIER creen Ee Gane Pees Gear Ses 6 12 T 285 iv TABLE CONT
17. Ri 4 BLK CR SEE Figure 7 9 CP OSN el OKEn 12 2 s24 war du 9 OLX muB bez T3q pep gt PECT3 rEcT2 771 GRN YEL GRN DVR GRN YEL D rEcx2 4560 3 60 460 3 60 E rEcw2 OR 6 n 380 3 50 380 3 50 ICF MAY BE IN CONTROL BOX D VWF CH32 BK DRI an B Keno epp If fff ctf ff HWH EEEE 1552 2 555 655 655 WHT1 4 TBU TRANS AUTO LI m a WHT3 RED 73 L3 XB jy in CY ASB AAA GRD 1 GRN L 6 GR HPS 230 3 60 FDH ast 9 s a TCC 7 190 3 50 lt RN 15 PDR DHH CL RED4 C c WHA1 NOTE WHEN EB ED BM OR CFS IS ARE INSTALLED WIRE DESTINATIONS CHANGE FROM THE STANDARD ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS XXX Figure 7 7 WIRING DIAGRAM Normal Evaporator Fan Operation Units with Single Capacitor Evaporator
18. 3 10 3 6 8 DataCORDER POoWer Up es ee ves net ente pees nak nerf ud gine 3 10 3 6 9 Pre Trip Data Recording 3 10 3 6 10 DataCORDER Communications 3 10 3 6 11 USDA Gold Treatment ehh Mente edie oasis Sew ae hie PEE HERE ES 3 11 3 6 12 USDA Cold Treatment Procedure 3 11 3 6 18 DataCORDER Alarms 3 11 OPERATION Cab RIA DX IRR ME ne RE 4 1 4 1 INSPECTION Before Starting 4 1 4 27 GONNEGT POWER ipe RR PRAE RR deat ace pad ae 4 1 4 2 1 Connection To 380 460 vac 4 1 4 2 2 Connection to190 230 vac 4 1 4 3 ADJUST FRESH AIR MAKEUP 4 1 4 3 1 Upper Fresh Air Makeup 1 40 4 1 4 3 1 Fresh Air Vent Position Sensor VPS 4 2 4 3 2 Lower Fresh Air Makeup 21 0 2 4 2 4 4 CONNECT WATER COOLED CONDENSER
19. MODULE Cy 3 H ves e MAINS POWER ma PR FUSE NES quas TO 2 AT SENSOR ONLY HG IF EQUIPPED 60 82 1 RTS 57 KEYPAD CIC I RTS 4 DaD SPON d gp MA4 5 prs HTT E1A2 berae 1061 03 3 Gp mes 92 WHT D E D ut i ere EB2 1 7 8 4 BLU I HPSB 58 8 V PRA 5 G2 e e ED l A cip 62 cmp Ol 5 i 9 amo DOGO E lt NOTE RM MAY lt ey 5 lt gt RO OUTSIDE BOX 30063 x 11 1 1 SDON A 1 BMON L FED 5 2 FUSE SDGDY I ST 099 1 BMGD ED3 FeD LK LA 1 1 Lud IF EQUIPPED ee QO BED 14 PHASE 2 ate 9 Mk 1277 LOCATING TAB 22 5 EQUIPPED oeta EREDE rep Pra 7 E rne O rue 1 I PR3A T XI 1 Nicree See KA C2 em 051 o BMS1 C lt Nice Licri amp 2 a PR2I UN 1 A 77 E 80508 88 88 m Cons
20. 21 ST 17 BLK HLA CBI cras WIRES TO TR X2 EM 2 Q2 pu eco EDL DF TFC P TFO 9 9 CIB1 CHA2 TRH4 KA12 EM1B EM2B HRA cHL3 DVM CP tila fai CR GRD 5 SEE Figure 7 9 CFT Sjors 12 2 s24 1 4 e dos ie UE 3 2 L3 c 3 T3 RED JOU ECH1 CBRN gt PECT2 cr13 s 2 A 6 1 lt GRN DVR GRN YEL rEcx2 460 3 60 460 3 2 A ax 89 380 3 50 380 3 s0 ICF MAY BE IN CH1 wat CONTROL BOX D NNN FCH32 i E fecal DUTY HWH wWHrT ps2 2 B 2 555 6585 5885 TRANS AUTO HH Ir SM a i in WHT3 d RED gt T3 3 A B amp lt ACB ATE e GRD GRN P gt L e en E HPS 230 3 60 SPT DPT TCC FDH e 190 3 50 BLK 4B DHH ZA HHT TRX2 Tice NOTE WHEN ED CFS IS ARE INSTALLED WIRE DESTINATIONS CHANGE FROM THE STANDARD ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS XXX Figure 7 8 WIRING DIAGRAM Single Evaporator Fan Capacity Units with Single Capacitor Evaporator Fan Moto
21. I TH THE IH IM LE 5 00 MEET HH IHH HEHHE 1 3 50 AOE IWA d 22 00 16 50 aiii ET IHRER tt eee RR EU PUTET ae HII AIL UHR tet VETT TUI IIIA HH TI 40 T AI wma 46 LE 0 50 p n n HERE rrr TET HM iy 7 HM rt utr man o
22. 3 5 3 3 10 Perishable Mode Dehumidification 3 5 3 3 11 Perishable Dehumidification Bulb Mode 3 5 3 3 12 Temperature Control Frozen Mode 3 6 3 3 13 Frozen Mode Conventional 3 6 3 3 T4 Frozen Mode Economy Gp VE Gd FUERIS IUE RIS 3 6 3 8 CONTROLLER ALARMS 2 3 6 3 5 UNIT PRE TRIP DIAGNOSTICS 3 7 3 6 DataCORBDER Soci sd 3 7 3 621 Description etu or estu uotis 3 7 3 6 2 DataCORDER Software 3 7 3 6 3 Sensor Configuration ACFO2 3 8 3 6 4 Logging Interval 3 10 285 11 TABLE CONTENTS Continued PARAGRAPH NUMBER Page 3 6 5 Thermistor Format 04 3 10 3 6 6 Sampling Type 5 amp dCF06 3 10 3 6 7 Alarm Configuration dCF10
23. Air exchange depends on static pressure differential which will vary depending on the container and how the container is loaded Units may be equipped with an Vent Position Sensor VPS The VPS determines the position of the fresh air vent and sends data to the controller display 4 3 1 Upper Fresh Air Makeup Vent Two slots and a stop are designed into the disc for air flow adjustments The first slot allows for a O to 3096 air flow and the second slot allows for a 30 to 100 air flow To adjust the percentage of air flow loosen the wing nut and rotate the disc until the desired percentage of air flow matches with the arrow Tighten the wing nut To T 285 clear the gap between the slots loosen the wing nut until the disc clears the stop Figure 4 2 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 210 180 150 120 90 60 30 0 10 20 30 40 50 60 70 80 90 100 For 60HZ operation multiply curves by 1 2 Figure 4 2 Make Up Air Flow Chart 4 3 1 Fresh Air Vent Position Sensor VPS The VPS allows the user to determine position of the fresh air vent via function code 45 This function code is accessible via the code select key The vent position will display for 30 seconds whenever motion corresponding to 5 CMH 3 CFM or greate
24. P8 NoApplcable Compressor On Setup A current draw test is performed before the compressor is started The compressor is started SMV is opened and another current draw test is per formed Pass Fail Criteria Passes if the change in compressor current draw is within the specified range P6 H amp P6L Not Applicable Suction Modulation P6 2 Valve Open and Closed P6 3 Quench Valve Test Setup The compressor and fans continue to run from the previous test The quench valve if configured will operate as in normal control mode The SMV is closed to 0 open current and condenser pressure readings are taken The SMV is opened to 5096 with continuous current and condenser pressure read ings taken to establish maximum values The SMV is returned to 096 open and final readings are taken Pass Fail Criteria Passes if the calculated difference in current at the 5096 open position are above a specified value before and after opening of the SMV OR the calculated difference in condenser pressure at the 50 open position are above a specified value before and after opening of the SMV Setup The compressor suction temperature is measured with the Quench valve closed The Quench valve is energized and the suction temperature drop is checked Pass Fail Criteria Passes if suction temperature is within the valid range Not Applicable Not Applicable NOTE P7 0 amp P8 are included with the Auto2 amp Auto 3 only P9 0
25. 2 1 2 Fresh Air Makeup Vent The function of the upper or lower makeup air vent is to provide ventilation for commodities that require fresh air circulation 9 Interrogator Connector Front right 10 Temperature Recorder 11 Lower Fresh Air Makeup Vent Location Blank Cover Shown 12 Transports Internationaux Routiers Sealing Provisions Typical All Panels 13 Upper Fresh Air Makeup Vent with VPS if equipped 14 Access Panel Evap Fan 2 Figure 2 1 Refrigeration Unit Front Section T 285 2 1 3 Evaporator Section The evaporator section Figure 2 2 contains the temperature recorder bulb or return recorder sensor return temperature sensor thermostatic expansion valve dual speed evaporator fans EM1 and 2 evaporator coil and heater drain pan heater defrost heaters defrost temperature sensor heat termination thermostat and heat exchanger SS lt lt gt 55555 55552 lt lt 559 595555955969 555555555 5555555 55555555555 555555555555 555555555555 555555555555 555555555555 555555552555555555555255 52 lt 555555555555 55 555 55 255555555502 555555555555 gt gt 555555555555 5555555 SOS SS Evaporator Fan Motor 1 Return Recorder Sensor Return Temperature Sensor Humidity Sensor Mechanical Recorder Bulb Evaporator Fan Motor 2 Defrost Temperature Sensor Heater Termination Thermostat Evaporator Coil
26. 6 21 6 22 3 Sensor Re Installation 6 22 6 23 ELECTRONIC PARTLOW TEMPERATURE RECORDER 6 23 6 24 MECHANICAL PARTLOW TEMPERATURE RECORDER 6 25 6 24 1 Checking The Temperature Recorder 6 25 6 25 SAGINOMIYA TEMPERATURE RECORDER 6 27 6 26 MAINTENANCE OF PAINTED SURFACES 6 29 M T 285 TABLE CONTENTS Continued PARAGRAPH NUMBER Page 6 27 COMPOSITE CONTROL BOX REPAIRS 6 29 6 27 1 Introduction cs Sirk dtd eet ede eret dede edet Pix edet Rete 6 29 6 27 2 Cracks eoe estt ein ttg ivo oto evel PE hu ee ie el ias 6 29 6 27 3 Chips And Holes bu MPO Eu dae e te 6 29 6 27 4 InSerts sick ior uec C Pe EE Mer RR Fade Mo REP 6 29 6 27 5 Door Hinge Inserts Dei eed nud 6 29 6 28 COMMUNICATIONS INTERFACE MODULE INSTALLATION 6 32 6 29 POWER FACTOR CORRECTOR CAPACITORS 6 33 ELECTRICAL WIRING SCHEMATIC 7 1 Yale INTRODUCTION 7 1 LIST OF ILLUSTRATIONS FIGURE
27. Container Refrigeration 27 mg Y d 2 n nnm OPERATION AND SERVICE for 69NT40 511 300 to 399 excluding 310 344 amp 359 Container Refrigeration Units T 285 Rev H TRANSICOLD OPERATION AND SERVICE MANUAL CONTAINER REFRIGERATION UNIT 69N T40 511 300 to 399 excluding 310 344 amp 359 SAFETY SUMMARY GENERAL SAFETY NOTICES 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 The general safety notices are presented in the following three sections labeled First Aid Operating Precautions and Maintenance Precautions A listing of the specific warnings and cautions appearing elsewhere in the manual follows the general safety notices FIRST AID An injury no matter how slight should never go unattended Always obtain first aid or medical attention immediately OPERATING PRECAUTIONS Always wear safety glasses Keep hands clothing and tools clear of the evaporator and condenser fans No work should be performed on the unit until all circuit breakers start stop switches are turned off and power supply is disconnected Always work in pairs Never work on the equipment alone In case of severe vibration or unusu
28. Qr mes HTL Enforss 65 2 BRN 04 FED EDI ED9 cess AMC BLK EB2 C uf C f f GG 63 62 E I Np KC 5 E lt rer eo amp H zn 5 5 DIS NOTE RM MAY e 5 RO OUTSIDE BOX O 3906 3 11 TRX2 1 1 BMDC 50004 PHASE 1 BMON 82 8 4 lt FUSE lt HSS ram L FED 87 39 Hsc 2 Co EQUIPPED HA CUR 2 Goes OT pep 9 PHASE 2 I CPTC 9823 lt FUSE 2 Qe 5 1 ke parte 12 2 LOCATING TAB c822 5 EQUIPPED RA ON BOTTOM Nepriattrs R 3 GHT cB21 3 FUSE M MV 32 574 9 1 REE Orr ICRI CA dicre oy irs _ srs EB4 N C 9 1 TENN BHEN J ED TZ gT 77 ea EE PRIE XE 5 2201 88 88 wA 8 5 5 HA A A AA uu 5092 n KEYWAY SIDE 4 ABCD ELA BCD ER n S A g mE Cortese dd 9 lt SINGLE C KEYWAY SIDE 8 8 9 6 gt SENSOR ONLY sy s ces
29. a gt I KA2 9 E SINGLE Eers IUE sag se 6 54 SENSOR ONLY sy s 2 DUNS 2 UNITS WITHOUT 49 iz les 60 52 51 0101919099 NE g t amp 7 ED12 D ST SMV les 62 1 BM ON aaa gt i x x Y MDS 85 p pg gg BATTERY p a M 3 X k 0 5929 TERR D a i 225 5 e Kp 2 2 2888 ts Eg 2 OO nico qug n 2 gt gt m De fen onl feel foal 1 DF 7_ L p FT stio FCR st10 0680 52 151 0 28 18 1 TFC ED11 5 127 NOTE WHEN ED BM VPS OR CFS IS ARE INSTALLED WIRE DESTINATIONS CHANGE FROM THE STANDARD ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS XXX Figure 7 5 WIRING DIAGRAM Normal Evaporator Fan Operation Units with Single Capacitor Evaporator Fan Motors Sheet 2 of 2 7 11 285 6 Heaters PFC o HRT2 PHBL ECG3 A O5 ORN A r ECLI TCR DHTL Reo Kek EcL A lt c HRTI ECT2 K B Tec E
30. rs 052 KEYWAY SIDE 4 Ine ee 8 4 d Se a ys GBA GG SL NA g RRS lt 2 gt gd 9 SINGLE 10 52421 510 c 5268 SENSOR ONLY CES ya lt UNITS WITHOUT 495 iz les 60 52 61 DO OOF EETA ED ONLY e n E E 2 ED12 D ST 52 51 BM I SURE xy 55223 516660 m o a kK 3 gt b o o HW ARES ee es 19 5 5 888 bs Del eb Ss ret fon 2p oa 1 7 L p FT 10 Lert ES ST10 Cro ED11 NOTE WHEN EB ED BM OR CFS IS ARE INSTALLED WIRE DESTINATIONS CHANGE FROM THE STANDARD ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS XXX Figure 7 6 WIRING DIAGRAM Single Evaporator Fan Capacity Units with Dual Capacitor Evaporator Fan Motors Sheet 2 of 2 7 9 T 285 HRT1 EGGS R T e Os TCR ecxi 2 S HRT2 ED B amp EcL2 lt ECP2 4 3 2 lt a ECES ECX1 EcS2 K 2
31. 1 Mechanical Temperature Recorder Bulb Element Recorder Box 31 Day Clock Mechanism and Platen Assembly wh 10 11 Set Screw Pinion Shaft Recorder Door Stylus Clock Winding Key Push Rod Figure 6 32 Partlow Mechanical Temperature Recorder 6 25 SAGINOMIYA TEMPERATURE RECORDER NOTE Do not overtighten chart nut after replacing chart 6 25 1 Battery Check a Open door and remove chart nut and platen b Push voltage indicator test switch item 3 Figure 6 33 Replace battery if voltage indicator points to the red or white zone 6 25 2Calibration NOTES 1 One full turn with the adjustment screw changes the indicated temperature by approximately 5 C 9 F 2 Overtightening of setscrew may change set temperature 3 Calibration should only be done when sensor temperature is decreasing 4 DO NOT move stylus by hand 6 27 Install new chart on platen Place the recording thermometer sensing bulb in 0 32 F ice water bath Ice water bath is prepared by filing an insulated container of sufficient size to completely immerse bulb with ice cubes or chipped ice filling voids between ice with water and agitating until mixture reaches 0 32 F as shown by a laboratory thermometer When the ice bath temperature reaches 0 C 32 F as shown by the laboratory thermometer reading compare the temperature indicated by stylus wit
32. 18 4 27 5 35 41 46 49 2 292 1580 1880 7185 88 811 1838 1876 1937 285 Note Curves to be used as troubleshooting guide only for model series 69 40 with fresh air makeup vent closed unit powered 460 VAC 60hz and SMV 100 open Bar psig 22 0 20 7 B _ Compressor Discharge Pressure 70 21 1 26 7 32 2 Ambient Air Temperature 5 Oo E a 70 80 90 10 21 1 26 7 32 2 37 8 Ambient Air Temperature Compressor Discharge Pressure Versus Ambient Air Temperature at Stable Box Temperature Figure 6 37 R 134a Compressor Pressure and A A Curves Versus Ambient Temperature Sheet 1 of 2 T 285 6 36 Compressor Suction Pressure 15 6 21 1 26 7 32 2 37 8 Ambient Air Temperature Compressor Suction Pressure Versus Ambient Air Temperature at Stable Box Temperature m a lt 2 tc tc 23 o tc O 15 6 21 1 26 7 32 2 37 8 43 3 48 9 Ambient Air Temperature Compressor Motor Current Versus Ambient Air Temperature At Stable Box Temperature Figure 6 37 R 134a Compressor Pressure rs erae Curves Versus Ambient Temperature heet 2 of 2 6 37 T 285 SECTION 7 ELECTRICAL WIRING SCHEMATIC 7 1 INTRODUCTION This section c
33. 3 3 6 Condenser Pressure Control When configuration variable CnF14 is set to In the condenser pressure control logic is activated to maintain discharge pressures above 130 psig in low temperature ambients The logic turns the condenser fan on or off in accordance with the condenser pressure transducer reading Refer to Table 3 4 The function is enabled when the following conditions are met 1 The ambient sensor reading is less than or equal to 27 C 80 F 2 Voltage Frequency ratio is less than or equal to 8 38 When the above conditions are met either pressures or timers may dictate a change of state from OFF to ON or ON to OFF If the condenser fan is OFF it will be energized if saturated condensing pressure is greater than 200 psig OR if the condenser fan has been OFF for a variable time period of up to sixty seconds depending on the ambient temperature As the ambient temperature increases the amount of time that the condenser fan is energized will correspondingly increase towards the maximum If the condenser fan is ON it will de energize only if the saturated condensing pressure is less than 130 psig and the condenser fan has been running for a minimum of thirty seconds depending on the ambient temperature 3 3 7 Arctic Mode With arctic mode enabled configuration variable CnF29 set to there will be a 30 minute time delay at startup if the ambient is colder than 10 0 C 14 F When the START STO
34. Sensor 2 one half the height of the load Place in pulp of product five feet from the end of the load for 40 foot containers or three feet from the end of the load for 20 foot containers This probe should be placed in a carton at a side wall at one half the height of the load To initiate USDA Recording connect the personal computer and perform the configuration as follows Fill in ISO header information Add a trip comment if desired Configure for five probes s r P1 P2 P3 Configure for one hour logging interval Set the sensor configuration at USDA Configure for two byte memory storage format Doa trip start 3 6 13 DataCORDER Alarms Alarm display is an independent DataCORDER function If an operating parameter is outside of the expected range or a component does not return the correct signals back to the DataCORDER an alarm is generated The DataCORDER contains a buffer of up to eight alarms A listing of the DataCORDER alarms is provided in Table 3 10 page 3 26 Refer to paragraph 3 6 7 for configuration information To display alarm codes a While in the Default Display mode press the ALT MODE amp ALARM LIST keys This accesses the Data CORDER Alarm List Display Mode which displays any alarms stored in the Alarm Queue To scroll to the end ofthe alarm list press the UP AR ROW Depressing the DOWN ARROW key will scroll the list backward The left display will show where
35. Te 1 79101112121 28 5 9 al MX X CONTROLLER A PROGRAMMING SLOT D E 6 1 CR 2 NOTE STANDARD CONTROLLER JUMPERS MA7 AND MA9 TO 11 SEE Figure 7 2 SHEET 1 ARE REMOVED IN THIS APPLICATION SAGINOMIYA TEMPERATURE ELECTRONIC PARTLOW TEMPERATURE RECORDER Chart Recorder RECORDER Chart Recorder Figure 7 4 SCHEMATIC DIAGRAM TransFRESH Vent Position Sensor VPS Humidity and Recorders 7 5 T 285 4 Heaters p HRT2 PR4 IRN KA r ECL1 ICR DHTL kd B EC ECT3 X lt c DHBR ECT2 K B 6 ECX1 ECS2 A 1 DHTL DHTR Ecx2 1 B T HRT3 ECW2 K E Kc DF11 T11 T4 T3 T2 P2 P1 T11 T3 T2 T1 P2 P1 OPH ED bee TFC ECD3 I PR1 aN HL ASEH COMBINATION SINGLE SENSOR ECXI K SEED Y AJGEEDCBA SENSOR CONFIGURATION _ T Y T if L i T 5 ED8 51 PR2 8 pePPpPRSEROTLLPL S g NE GRD ECXI K B CLE K 16 x L WU B 25 5021202 BR E a 90000090 H FI CN Iu E d OO x RY HPT 9
36. 6 16 6 18 SUCTION MODULATION VALVE 6 16 6 18 1 Precheck Procedure ese teem TUER T eR RI 6 16 6 18 2 Checking The Stepper valve 6 17 6 18 3 Checking The Drive Module 6 17 6 18 4 Checking The Controller 6 18 6 18 5 Emergency Repair Procedures 6 18 6 19 AUTOTRANSFORMER S stes Pee A TONO Deeds 6 18 6 20 VENT POSITION SENSOR SERVICE 6 19 6 21 CONTROLLER pu EA E E eue pu EU EUR ee 6 19 6 21 21 Handling Controllers cv Scag ube stew nes Vestae is bee 6 19 6 21 2 Controller Trouble Shooting 6 19 6 21 3 Controller Programming Procedure 6 20 6 21 4 Removing and Installing the Controller 6 20 6 21 5 Battery Replacement nace dot th oae aed eet lye x a 6 21 6 22 TEMPERATURE SENSOR SERVICE 6 21 6 22 1 Sensor Checkout Procedure 6 21 6 22 2 Sensor Replacement
37. Configuration numbers not listed are not used in this application These items may appear when loading configuration software to the controller but changes will not be recognized by the controller programming T 285 3 12 Table 3 5 Controller Function Codes Sheet 1 of 4 DESCRIPTION Note If the function is not applicable the display will read Display Only Functions Suction Modulati Displays the SMV percent open The right display reads 10096 when the valve is Valuc bns fully open and 0 when the valve is fully closed The valve will usually be at 21 9 on start up of the unit except in very high ambient temperatures 2 Quench Valve Displays state of the solenoid quench valve open or closed Not Applicable Line Current The current sensor measures current on two legs The third unmeasured leg is calculated based on a current algorithm The current measured is used for control and diagnostic purposes For control processing the highest of the Phase A and Cdo5 Line Current B current values is used for current limiting purposes For diagnostic processing PhaseB the current draws are used to monitor component energization Whenever a heater or a motor is turned ON or OFF the current draw increase reduction for Line Current that activity is measured The current draw is then tested to determine if it falls PhaseC within the expected range of valu
38. Function codes Cd27 through Cd37 are user selectable functions The operator can change the value of these functions to meet the operational needs of the container There are two modes for defrost initiation user selected or automatic control The user selected values are OFF 3 6 9 12 or 24 hours with a factory de fault of 12 hours Automatic defrost starts with an initial defrost at 3 hours and then adjusts the in terval to the next defrost based on the accumulation of ice on the evaporator coil Following a start up or after termination of a defrost the time will not begin count ing down until the defrost temperature sensor DTS reading falls below set point If the reading of DTS rises above set point any time during the timer count down the interval is reset and the countdown begins over If DTS fails alarm code 160 Defrost Interval is activated and control switches over to the the return temperature sensor The Hours or Automatic Controller will act in the same manner as with the DTS except the return tempera ture sensor reading will be used Defrost Interval Timer Value Configuration variable CnF23 f the software is configured to SAv save for this option then the value of the defrost interval timer will be saved at power down and restored at power up This option prevents short power interruptions from resetting an almost expired defrost interval and possibly delaying a needed defrost cycle NOTE The defrost
39. Removing the compressor motor press fit stator in the field is not recommended The rotor and sta tor are a matched pair and should not be separated 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 posi tions CAUTION Ensure that thrust washer does not fall off dowel pins while installing oil pump CAUTION The set screw on the crankshaft must be removed for this type of oil pump CAUTION Use only Carrier Transicold approved Polyol Ester Oil POE Mobil ST32 compressor oil with R 134a Buy in quantities of one quart or smaller When using this hygroscopic oil immediately reseal Do not leave container of oil open or contamination will occur Safety 3 T 285 SPECIFIC WARNING AND CAUTION STATEMENTS Continued CAUTION Take necessary steps place plywood over coil or use sling on motor to prevent motor from falling into condenser coil CAUTION If the thermostatic expansion valve is found to be in need of replacement then the power head and cage assembly are to replaced as a pair They are a matched pair and replacing one without the other will affect the superheat setting CAUTION DO NOT disassemble piston from NEW suction modulating valve powerhead assembly Doing so may result in damage to piston CAUTION The unit must be OFF whenever a programming card is inserted or removed f
40. the hub nuts or bolts Install venturi Apply Loctite H to fan set screws Adjust fan within venturi so that the outer edge of the fan projects 3 2 to 6 4 mm 3 16 E1 16 back from edge of the venturi Spin fan by hand to check clearance Close and secure condenser fan screen guard Apply power to unit and check fan rotation If fan motor rotates backward reverse wire numbers 5 and 8 6 12 WATER COOLED CONDENSER CLEANING The water cooled condenser is of the shell and coil type with water circulating through the cupro 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 Example Dischar
41. 1 Replacing The Evaporator Fan Assembly 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 2 2 by removing mounting bolts and T I R locking device Reach inside of unit and remove the Ty Rap securing the wire harness loop Then unplug the connector by twisting to unlock and pulling to separate b Loosen four 1 4 20 clamp bolts that are located onthe underside of the fan deck at the sides of the of the fan assembly Slide the loosened clamps back from the fan assembly c Slide the fan assembly out from the unit and place on a sturdy work surface 6 15 o 1 Stator 6 Impeller Fan 2 Flat washer 1 4 7 Key 3 Bolt 1 4 20 x 3 4 8 Mylar Protector 4 Locknut 5 8 18 9 Evaporator Motor 5 Flat washer 5 8 Figure 6 23 Evaporator Fan Assembly 16 2 Disassemble The Evaporator Fan Assembly Attach a spanner wrench to the two 1 4 20 holes located in the fan hub Loosen the 5 8 18 shaft nut by holding the spanner wrench stationary and turning the 5 8 18 nut counter clockwise see Figure 6 23 Remove the spanner wrench Use a universal wheel puller and remove the fan from the shaft Remove the washers and key Remove the four 1 4 20 x 3 4 long bolts that are located under the fan that support the motor and sta tor housing Remove the motor and plastic
42. 21 BLK y 2 2 52 2 nm Pu Hi WHT gt se Y 12 2 52 z 1 RED L3 C 3 T3 RED a R BRN 13 23 4 L3 r3 B3 L 68 lt GRN cs Her 5 A WC 7 m 7 TBU DVR PE PFC 3 117 h2 HH Y CI 5 24 ARA ait cen c 65 1 XY Y RA 20 Os 6 Heater mo 5 D 79 Pog HR DHTL DHMR m AF3 19 og DHML DHBR va 12 EA DHBL DHTR Y CH lig OPE p KA2 5 an 5 Heater HPS 2 gt gt gt lt lt gt L2 T2 B9 2 v ECF1 Al U2 L3 T3 20 r2 3 ar Ir 1 Q 5 4 6 8 07 9 3 5 u 1 B 4 8 L3 T3 4 TN 5 SE 1 2 OTTS gt So LI ECG2 1 P P2 ECH2 2 1 A2 EF cc 15 1 1 1 1 Lim ss gt gt cm SHUT am ECJ1 ECJ2 L T4 A2 P c P2 L2 14 amaz 52 2 2 cal T2 T E2 L T4 P A1 A2 EM2A P P 2 11 M02 J lt Li KA4 L T4 Al A2 4 HTT 11 5 L3 9 929 L3 T3 ECD3 8 Tue TH HR r1 9 lt 1 gt Al A2 31
43. 33 Condenser Grille ey hee ee ie eee ee PEE ae ES 1 3 1 3 34 Emergency Bypass t eeu ieee i ice ed ea eee ant 1 3 TABLE CONTENTS Continued PARAGRAPH NUMBER Page DESCRIPTION ger huge LEPIDE E Re 2 1 21 GENERAL 2 1 2 1 1 Refrigeration Unit Front Section 2 1 2 1 2 Fresh Air Makeup Vent o esee sete tin de ia 2 1 21 3 Evaporator Section o cero e 2 2 2 1 4 Compressor Section 2 3 2 1 5 Air Cooled Condenser Section 2 4 2 1 6 Water Cooled Condenser Section 2 5 2 1 7 Control Peter ep dee 2 6 2 1 8 Communications Interface Module 2 6 2 2 REFRIGERATION SYSTEM 2 7 2 9 EFEGTRIGALE DATA rms nene eo erat metes ete tees dee p EE 2 8 2 4 SAFETY AND PROTECTIVE DEVICES 2 9 25 REFRIGERATION CIRCUIT 2 10 MICROPROCESSOR culic
44. 36 and remove low voltage shield Open high voltage shield T 285 Remove the circuit breaker panel with circuit breaker from the control box Locate wires 21 CB22 CIA5 CB23 CIA7 that have been tied back in the wire harness Remove the protective heat shrink from the ends of the wires Attach the three wires as addressed to the LOAD side of the circuit breaker Refit the circuit breaker panel Fit the new RMU into the unit Remove plugs CIA CIB and CID from the wiring harness and attach to the module Replace the low voltage shield Table 6 6 Recommended Bolt Torque Values 5 2 in Ibs 9 6 in lbs 20 in Ibs 23 in Ibs 75 in lbs 11 ft lbs 20 ft lbs 31 ft lbs 43 ft lbs 57 ft lbs 92 ft lbs 124 ft lbs 82 5 in lbs 145 2 in Ibs 22 0 ft lbs 34 1 ft lbs 47 3 ft lbs 62 7 ft lbs 101 2 ft lbs 136 4 ft lbs 6 29 POWER FACTOR CORRECTOR CAPACITORS PFC The power factor corrector capacitors are of the permanent split capacitor type There are a total of three capacitors with discharge resistors enclosed in a single case a When to check for a defective capacitor The capacitors assist in correcting current draw by the compressor If one or more of the capacitors is faulty there will be an imbalance in current In addition the power consumption of the unit will increase b Removing the capacitor WARNING Make sure power to the unit is OFF and power plug disconnected before
45. 40 foot Ibs T 285 Open all valves Start the unit Adjust the suction service valve so that the approxi mate temperature OR current limit is maintained For perishable loads it is recommended that the ad justment be made so that the available capacity is larger than the load the unit will cycle OFF and ON h Once repair parts become available repair as re quired 6 19 AUTOTRANSFORMER If the unit does not start check the following a Make sure the 460 vac yellow power cable is plugged into the receptacle item 3 Figure 4 1 and locked in place b Make sure that circuit breakers CB 1 and CB 2 are in the ON position If the circuit breakers do not hold check voltage supply c There is no internal protector for this transformer design therefore no checking of the internal protec tor is required d Using a voltmeter and with the primary supply circuit ON check the primary input voltage 460 vac Next check the secondary output voltage 230 vac The transformer is defective if output voltage is not available 6 20 VENT POSITION SENSOR SERVICE The fresh air vent position sensor alarm AL50 will occur if the sensor reading is not stable for 5 minutes or if the sensor is outside of its valid range shorted or open This can occur if the vent is loose or the panel is defective To confirm a defective panel assure that the wing nut is secure and then power cycle the unit The alar
46. 6 8 for applicable compressor torque values 6 8 4 Preparation a Suction and Discharge Valves If the valve seats look damaged or worn replace valve plate assembly Always use new valves because it is T 285 6 8 difficult to reinstall used valves so that they will seat as before removal Any valve wear will cause leakage 1 Suction Valve 2 Suction Valve Positioning Spring 3 Valve Plate Dowel Pin Figure 6 14 Suction Valve amp Positioning Springs Suction valves are positioned by dowel pins see Figure Figure 6 14 Do not omit the suction valve positioning springs 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 b Compression Rings The compression ring is chamfered on the inside circumference This ring is installed with the chamfer toward the top Stagger the ring end gaps so they are not aligned Figure 6 15 Piston Ring The gap between the ends of the piston rings can be checked with a feeler gauge by inserting the ring into the piston bore approximately 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 respectively 6 8 5 Installing the Components a Push pistons from the inside ofthe crankcase through the cylinders being careful not to brea
47. 75 of its proper value 3 19 T 285 Table 3 7 Controller Test Codes Sheet 1 of 4 S TITLE DESCRIPTION NOTE Auto or Auto1 menu includes the P P1 P2 P3 P4 P5 P6 and rSLts Auto2 menu in cludes P P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 and rSLts Auto3 menu includes P P1 P2 P3 P4 P5 P6 P7 P8 and rSLts All lights and display segments will be energized for five seconds at the start of Pre Trip Initiated the pre trip Since the unit cannot recognize lights and display failures there are no test codes or results associated with this phase of pre trip Setup Heater must start in the OFF condition and then be turned on A current Heaters Turned On draw test is done after 15 seconds Pass Fail Criteria Passes if current draw change is within the range specified Setup Heater must start in the ON condition and then be turned off A current Heaters Turned Off draw test is done after 10 seconds Pass Fail Criteria Passes if current draw change is within the range specified Requirements Water pressure switch WP input must be closed Condenser Fan Setup Condenser fan is turned ON a current draw test is done after 15 sec onds Pass Fail Criteria Passes if current draw change is within the range specified Setup Condenser fan is turned OFF a current draw test is done after 10 sec Condenser Fan Off onds Pass Fail Criteria Passes if current draw change is within
48. Alarm 23 is triggered by a missing jumper wire The alarm will stay active until AL23 the jumper wire is reconnected On units with Single Evaporator Fan Capability CnF32 set to 1EFO this alarm is deactivated Alarm 24 is triggered by the opening of the compressor motor internal protector AL24 Compressor Motor This alarm will disable all control units except for the evaporator fans and will re Safety main active until the motor protector resets This alarm triggers the failure action code set by Function Code Cd29 Alarm 25 is triggered by the opening of the condenser motor internal protector AL25 Condenser Fan Mo and will disable all control units except for the evaporator fans This alarm will tor Safety remain active until the motor protector resets This alarm is deactivated if the unit is operating on water cooled condensing All Supply and Re Alarm 26 is triggered if the Controller determines that all of the control sensors AL26 turn temperature are out of range This can occur for box temperatures outside the range of Control Sensors 50 C to 70 C 58 F to 158 F This alarm triggers the failure action code Failure set by Function Code Cd29 The Controller has a built in Analog to Digital A D converter used to convert Probe Circuit Cal analog readings i e temperature sensors current sensors etc to digital read AL27 ibration Failure ings The Controller continuously performs calibration tests on the A D c
49. C EE D SEE SEE FIGURE 7 2 or 7 3 5 5 TransFRESH CONTROLLER VENT POSITION SENSOR Note DPT may not be installed if unit is equipped with VPS TR 5 SEE FIGURE SEE FIGURE 7 2 or 7 3 2 o CB1 1 2 x2 SEE FIGURE 7 2 or 7 487705 WH HWH C HPT 12 1 22 bad MEER 13113 4 8 2 2 cl 5 le 1 A aci 4 B 1 id F3 1 A 2 lt i TI PDR a1Haz lt lt xus a 2 m aus TC SEE FIGURE 7 2 or 7 3 NatureFresh HUMIDITY MANAGEMENT SYSTEM COMMUNICATIONS m INTERFACE 1 MODULE 5 Cl 5 ST TR SEE FIGURE SEE FIGURE 5 7 2 7 3 7 2 7 3 55 1 1 102 24 2 n 49 70g x2 5 Sr SEE FIGURE i T wen 24V 49 70s X2 25 hs Tesases 14
50. Disc Alternate 3 Key 11 Pressure Transducer 4 Fan Motor 12 Sight Glass Moisture Indicator 5 Condenser Coil Cover 13 Filter Drier 6 Condenser Coil 14 Liquid Line Service Valve 7 Motor Mounting Bracket 15 Quench Valve 8 Receiver Figure 2 4 Condenser Section T 285 2 4 2 1 6 Water Cooled Condenser Section quench expansion valve rupture disc condenser pressure transducer filter drier water couplings and water pressure switch The water cooled condenser replaces the standard unit receiver The water cooled condenser section Figure 2 5 consists of a water cooled condenser sight glass C TO A Sight Glass Water Cooled Condenser Rupture Disc Condenser Pressure Transducer Quench Valve Filter Drier DIRON LA Liquid Line Service Valve Moisture Liquid Indicator Coupling Water In Self Draining Coupling Water Out Water Pressure Switch 4 4 Figure 2 5 Water Cooled Condenser Section T 285 2 1 7 Control Box Section The control box Figure 2 6 includes the manual operation switches circuit breaker CB 1 compressor fan and heater contactors control power transformer fuses key pad display module current sensor module controller module and the communications interface module
51. Drain Pan Heater 0 SSN 55555555595 5255555 lt 55052 555 lt gt 55555555 ALTERNATE USDA The evaporator fans circulate air through the container by pulling it in the top of the unit directing it through the evaporator coil where it is heated or cooled and discharging it at the bottom The evaporator components are accessible by removing the upper rear panel as shown in the illustration or by removing the front access panels HTT Alternate Location 559 lt gt 525552555 595559 SK x 5 lt gt 5555555555555555555555 555555555555 lt gt 555552 555590 55255 LOCATION 11 Hermetic Thermostatic Expansion Valve 12 Semi Hermetic Thermostatic Expansion Valve 13 Heat Exchanger 14 Interrogator Connector Rear 15 USDA Probe Receptacle PR2 16 USDA Probe Receptacle PR1 17 USDA Probe Receptacle 18 Cargo Probe Receptacle PR4 19 Evaporator Coil Heaters Figure 2 2 Evaporator Section T 285 2 2 2 1 4 Compressor Section The compressor section includes the compressor with high pressure switch power cable storage compartment and autotransformer This section also contains the suction modulating valve A CALO 0 modulating valve stepper motor drive discharge pressure regulator valve and discharge suction pressure transducers The supply temperature sensor supply recorder sensor a
52. NUMBER Page Figure 2 1 Refrigeration Unit Front Section 2 1 Figure 2 2 Evaporator Sectlohr i ee ac 2 2 Figure 2 3 Compressor Section 2 3 Figure 2 4 Condenser 2 4 Figure 2 5 Water Cooled Condenser Section 2 5 Figure 2 6 Control Box Section 1 2 6 Figure 2 7 Refrigeration Circuit Schematic 2 11 Figure 3 1 Temperature Control System 3 1 Figure 3 2 Key Pad pent luem Ep REIS 3 2 Figure 3 Display Module 2 3 2 Figure 3 4 Micro Link 2i Controller 3 3 Figure 3 5 Standard Configuration 3 9 Figure 3 6 Data Reader eo Lr RR Reg DI enit be ER ee CR RS 3 10 Figure 4 1 Autotranstonmen PNE MERI 4 1 Figure 4 2 Make Up Air Flow Chart 4 2 Figur
53. TF al n RM DL CHO 24 ED HHT DHH gt 959 O i o ANA TS Tl Em m lt gt 1 KEYPAD 3 A 2 1 MDS 9 TPS DISPLAY MODULE MB RECHARGEABLE gi BATTERY PACK 7 2VDC F RRS SINGLE SENSOR ONLY 16 3 e ANN ped Pl eee 234 Postel 6 5 4 2 1 T 101112 9 16 ra 1 F2 F3 LJ CONTROLLER bow PROGRAMMING SLOT E EC A B D E 6 l L M P R 5 1 1 1 2 n n 2 r1 H 2 3 h h 3 h h H 3 al I5 iip 6 oj Fe a 5 CBA CB CB s vm NN BAC 5 gt RRS PR4 20 SENSOR ONLY HS SPT DPT g SD r3 po 1A DC pc pc 5 25 ar l zB d e 1 Seis 155 gt 60 198 PRI PR3 PR2 aot 2A ON H2EP ON ONDE 2 os s1 51 515 5 S249 52 m 52 45 20 285 Figure 7 3 SCHEMATIC DIAGRAM Single Evaporator Fan Capability 7 4 ST TR a SEE FIGURE SEE FIGURE 7 2 or 7 3 7 2 or 7 3 24 2 47 0 x2 P R 5 T W x Y EC 7 1 z TFC Tl A TO DL TERMINAL
54. Table 6 5 Drill Information Drill size and depth 34 06231 01 10 3 mm x 17 8 mm deep 404 in x 700 in deep 34 06231 03 6 8 mm x 16 3 mm deep 266 In x 640 in deep in x 1 0 in 34 06231 07 T 285 6 30 GALVOIGNI SV SI 3H3HM L cC90 t SHJAWNN LHVd LH3SNI y Figure 6 35 Insert Location T 285 6 31 6 28 COMMUNICATIONS INTERFACE MODULE INSTALLATION Communications interface Module Figure 6 36 Communications Interface Installation Units with communication interface module provision have the required wiring installed The provision wiring kit part number 76 00685 00 includes three pre addressed wires installed between the circuit breaker and communication interface module locations These wires are to be connected to the module and circuit breaker to allow the module to communicate over the power system To install the module do the following WARNING THE UNIT POWER PLUG MUST BE DIS CONNECTED TO REMOVE POWER FROM CIRCUIT BREAKER CB1 1 is connected to the power system see wiring schematic Ensure that the unit power is off AND that the unit power plug is disconnected b Open control box see Figure 6
55. aol ig wu a 1 2 1 3 16 Thermometer Port lt i ide dace eae Siok ect Pen Seda atl bg reed n ae dure D aes 1 2 1 8 1 Water Cooling sci iter ob IECUR ae tto Mee Pret ORAE Mate eee 1 2 1 9 18 Back Panels crecer teque tenete Ranta edad NR deo dette 1 2 13 19 460 Volt Cable 4c Sele ed CR EHE E ES 1 2 1 3 20 230 Volt Cable RE e RE AD WD E exe ex Quests 1 2 1 3 21T Gable Resiralhit usu rc ea oed op t 1 2 1 3 22 Upper Air Fresh Air Make Up 1 2 1 3 23 Lower Air Fresh Air Make Up 1 2 1 3 24 Controlled 4 1 2 123 25 Mode uo ed Den RU baee Eaedem cei 1 2 1 3 26 H midifICatlOnt DR ORDER UR ED DET A ODE d 1 2 1 3 27 Power Gorrectioni iocur ety re RAD RR RR ela Rn 1 2 1 39 28 Evaporator dex eese he PED e Os CO eU Fe pee DE THEE ES 1 2 1 3 29 Evaporator Fan Operation 1 3 1 39 30 Labels gt ks aed dead e ESAME 1 3 Too IPAO SO a r rar r E 1 3 1 3 32 Controller eade ee pra Aa E RA 1 3 13
56. by pressing the EN TER key The alarm list will clear and will be displayed 3 5 UNIT PRE TRIP DIAGNOSTICS Pre Trip Diagnostics is an independent controller function which will suspend normal refrigeration controller activities and provide preprogrammed test routines The test routines include Auto Mode testing which automatically preforms a pre programmed sequenced of tests or Manual Mode testing which allows the operator to select and run any of the individual tests CAUTION Pre trip inspection should not be per formed with critical temperature cargoes in the container CAUTION When Pre Trip key is pressed dehumidifi cation and bulb mode will be deactivated Atthe completion of Pre Trip activity dehu midification and bulb mode must be reacti vated Testing may be initiated by use of the Key Pad or via communication but when initiated by communication the controller will execute the entire battery of tests auto mode At the end of a pre trip test the message rSLts pretest results will be displayed Pressing the ENTER key will allow the user to see the results for all subtests The results will be displayed as PASS or FAIL for all the tests run to completion A detailed description ofthe pre trip tests and test codes is provided in Table 3 7 page 3 20 detailed operating instructions are provided in paragraph 4 8 3 6 DataCORDER 3 6 1 Description The Carrier Trans
57. continued S Safety and Protective Devices 2 9 Sampling Type 3 10 Sensor Configuration 3 8 Sequence Of operation 4 6 Service Valves 6 1 Starting 4 3 Stopping 4 3 Suction Modulating Valve 6 16 T Temperature Control 3 4 3 6 Temperature Recorder 4 3 6 23 6 25 6 27 Temperature Sensor 6 20 Thermistor Format 3 10 Torque Values 6 32 6 34 U USDA 3 11 V Vent Postion Sensor 6 18 Water Cooled Condenser 6 10 Water Cooled Condenser Section 2 5 Wear Limits 6 34 Wiring Schematic 7 1 Index 2 2 Carrier United Technologies Company Carrier Transicold Division Carrier Corporation Container Products Group P O Box 4805 Syracuse N Y 13221 U SA Gp www carrier transicold com A member of the United Technologies Corporation family Stock symbol UTX TRANSICOLD 2004 Carrier Corporation Printed in U S A 03 04 Dc
58. dehumidification and bulb mode must be reactivated manually if required 4 9 OBSERVE UNIT OPERATION 4 9 1 Crankcase Heater When the crankcase heater is installed it will be operational whenever the compressor is off and there is power to the unit The heater is connected to set of normally closed auxiliary contacts on the compressor contactor 4 9 2 Probe Check If the DataCORDER is off or in alarm mode the controller will revert to a four probe configuration which includes the DataCORDER supply and return air probes as the secondary controller probes The controller continuously performs probe diagnosis testing which compares the four probes If the probe diagnosis result indicates a probe problem exists the controller will perform a probe check to identify the probe s in error a Probe Diagnostic Logic Standard If the probe check option controller configuration code CnF31 is configured for standard the criteria used for comparison between the primary and secondary control probes is 1 C 1 8 F for perishable set points or 2 C 3 6 F for frozen set points If 25 or more of 30 readings taken within a 30 minute period are outside of the limit then a defrost is initi ated and a probe check is performed In this configuration a probe check will be run as a part of every normal time initiated defrost b Probe Diagnostic Logic Special If the probe check option is configured for special the above c
59. door and wind mechanical clock or check battery of electronic recorder Be sure key is re turned to storage clip of mechanical recorder Lift stylus pen by pulling the marking tip outward un til the stylus arm snaps into it s retracted position c Install new chart making sure chart is under the four corner tabs Lower the stylus until it has made contact with the chart Close and secure door Saginomiya Recorders Open recorder door Remove chart nut and platen Push voltage indicator test switch to check battery condition Replace battery if required Lift stylus pen by pushing in the stylus lifter and ro tating the lifter clockwise raising stylus at the same time until lifter locks in position c Install new chart 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 Close and secure door DataCORDER a Check and if required set the DataCORDER Config uration in accordance with desired recording parame ter Refer to paragraph 3 6 3 b Enter a Trip Start To enter a trip Start do the fol lowing 1 Depress the ALT MODE key and scroll to Code dC30 2 Depress and hold the ENTER key for five seconds 3 The Trip Start event will be entered in the Data CORDER 4 7 4 Complete Inspection Allow unit to run for 5 minutes to stabilize co
60. down scale then move upscale to the chart ring at 0 C 32 F and stop b Ifthe tip of the pen item 4 is on the 0 C 32 F chart ring the recorder is in calibration proceed to step c If the tip of the pen is NOT on the 0 C 32 F chart ring the operator must loosen the two screws onthe bottom of the stylus arm to adjust the pen tip manually to the 0 C 82 F chart ring Tighten the screws when adjustment is complete c Press the calibration button and the pen will position itself to the correct temperature reading For Electronic Partlow Recorder CTD P N 12 00464 02 NOTE Use only the customer specific chart contact the unit owner for supplies a Press the Calibration button item 7 Figure 6 31 on the bottom of the recorder The pen tip will drive fully down scale then move upscale to the chart ring at 30 C 22 F and stop b Ifthe tip of the pen item 4 is on the 30 C 22 chart ring the recorder is in calibration proceed to step c If the tip of the pen is NOT on the 30 C 22 F chart ring the operator must loosen the two screws on the bottom of the stylus arm to adjust the pen tip manually to the 30 C 22 F chart ring Tighten the screws when adjustment is complete c Press the calibration button and the pen will position itself to the correct temperature reading 6 24 MECHANICAL PARTLOW TEMPERATURE RECORDER CAUTION The inside mechanism of the recorder particularly
61. format The low requires less memory and records temperature in 0 25 C 0 45 F steps when in the perishable mode or 0 5 C 0 9 F steps when in the frozen mode The normal records temperature in 0 01 C 0 02 F steps for the entire range 3 6 6 Sampling Type dCF05 amp 4 6 Three types of data sampling are available average snapshot and USDA When configured to average the average of readings taken every minute over the recording period is recorded When configured to snapshot the sensor reading at the log intervale time is recorded When USDA is configured the supply and return temperature readings are averaged and the 3 USDA probe readings are snapshot 3 6 7 Alarm Configuration dCF07 dCF10 The USDA and cargo probe alarms may be configured to OFF ON or AUTO If a probe alarm is configured to OFF then the alarm for this probe is always disabled Ifaprobe alarm is configured to ON then the associated alarm is always enabled If the probes are configured to AUTO they act as a group This function is designed to assist users who keep their DataCORDER configured for USDA recording but do not install the probes for every trip If all the probes are disconnected no alarms are activated As soon as one of the probes is installed then all of the alarms are enabled and the remaining probes that are not installed will give active alarm indications The DataCORDER will record the initiation of a pre trip test refer to p
62. include fixed handles located at the sides of the unit and or a hinged handle at the center attached to the condenser coil cover 1 3 16 Thermometer Port The unit may be fitted with ports in the front of the frame for insertion of athermometer to measure supply and or return air temperature If fitted the port s will require a cap and chain 1 3 17 Water Cooling The refrigeration system may be fitted with a water cooled condenser The condenser is constructed using copper nickel tube for sea water applications The water cooled condenser is in series with the air cooled condenser and replaces the standard unit receiver When operating on the water cooled condenser the condenser fan is deactivated by either a water pressure Switch or condenser fan switch 1 3 18 Back Panels Back panel designs that may be fitted include panels of aluminum and stainless steel Panels may have access doors and or hinge mounting T 285 1 3 19 460 Volt Cable Various power cable and plug designs are available for the main 460 volt supply The plug options tailor the cables to each customers requirements 1 3 20 230 Volt Cable Units equipped with an autotransformer require an additional power cable for connection to the 230 volt source Various power cable and plug designs are available The plug options tailor the cables to each customers requirements 1 3 21 Cable Restraint Various designs are available for storage of the power cab
63. interval timer counts only during compressor run time This code determines the temperature units or which will be used for all temperature displays The user selects C or F by selecting function code Cd28 and pushing the ENTER key The factory default value is Celsius units Temperature Units C or F This function code will display set to F If all of the control sensors are out of range alarm code AL26 or there is a probe circuit calibration failure alarm code AL27 the unit will enter the shutdown state Failure Action defined by this setting The user selects one of four possible actions as follows Mode A Full Cooling stepper motor SMV at maximum allowed opening B Partial Cooling stepper motor SMV 11 open C Evaporator Fan Only D Full System Shutdown Factory Default The in range tolerance will determine the band 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 0 5 C 0 9 F In Range Tolerance 1 8 2 7 3 6 F Factory Default o 1 2 3 4 1 0 1 5 2 0 C 285 3 14 Table 3 5 Controller Function Codes Sheet 3 of 4 The stagger start offset time is the amount of time that the unit will delay at start Stagger Start Offset up thus allowing multiple units to stagger their contr
64. is placed in the EMERGENCY DEFROST position to a De energize the compressor condenser fan and evaporator fan contactors b Illuminate the EMERGENCY DEFROST LIGHT c Energize the heater contactor d Illuminate the DEFROST LIGHT CAUTION The unit will remain in the DEFROST mode as long as the emergency defrost switch is in the DEFROST position To prevent cargo damage the operator must monitor con tainer temperature and manually cycle op eration as required to maintain temperature within required limits Toreturn the unitto normal operation place the switch in the NORMAL OPERATION position When emergency defrost is no longer required re install the wire tie at the switch mounting T 285 SECTION 5 TROUBLESHOOTING REMEDY CONDITION POSSIBLE CAUSE REFERENCE SECTION 5 1 UNIT WILL NOT START OR STARTS THEN STOPS gt Bride Components Not Operating Compressor internal protector open _ 68 Compressor hums but does not Hot oad Failure to Prezcoo Repair DUK 671 615 don tially closed completely Compesserwm 68 5 1 T 285 REMEDY CONDITION POSSIBLE CAUSE REFERENCE SECTION 5 3 UNIT RUNS BUT HAS INSUFFICIENT COOLING Compressor Compressor vaos defesi 88 MIT 5 4 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING No operation of any kind No control power Unit will not heat or has insuffi Evaporator fan motor contactor defective cient heat Controller malfunct
65. is brought to the tool being used To connect the manifold gauge hose set do the following 1 Remove service valve stem caps and check to make sure they are backseated Remove service port caps See Figure 6 1 2 Connect the high side field service coupling see Figure 6 3 to the discharge or liquid line valve ser vice valve port 3 Turn the high side field service coupling knob red clockwise which will open the high side of the sys tem to the gauge set 4 Connect the low side field service coupling to the suction service valve port 5 Turn the low side field service coupling knob blue clockwise which will open the low side of the system to the gauge set 6 To read system pressures slightly midseat the high side and suction service valves T 285 8 YELLOW 9 RED 1 Discharge Service 7 Low Side Hose Valve 8 Center Hose 2 Compressor 9 High Side Hose 3 Suction Service Valve 10 Electronic Vacuum 4 Receiver or Water Gauge Cooled Condenser 11 Manifold Gauge Set 5 Liquid Service Valve 12 Refrigerant Cylinder 6 Vacuum Pump 13 Reclaimer Figure 6 4 Refrigeration System Service Connections CAUTION To prevent trapping liquid refrigerant in the manifold gauge set be sure setis brought to suction pressure before disconnecting c Removing the Manifold Gauge Set 1 While the compressor is still ON backseat the high side service valve 2 Midseat both hand
66. 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 6 6 Refer to Table 6 7 and Table 6 8 for 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 fill plug see Figure 6 6 to vent the crankcase Loosen the drain plug in bottom plate and allow the oil to drain out slowly Remove the plug slowly to relieve any crank case pressure Some units have a plug in the bottom center of the crankcase which may be removed for draining the motor end more quickly 1 Oylinder Head Gasket 4 Discharge Valve 2 Discharge Valve 5 Valve Plate Screw amp Lockwasher 6 Valve Plate Assembly 3 Discharge Valve Stop 7 Valve Plate Gasket Figure 6 7 Exploded View of Valve Plate T 285 1 Oil Pressure Relief 3 Oil Suction Tube Valve 4 Capscrew 2 Oil Return Check 5 Connecting Rod and Valve Cap Assembly Figure 6 8 Bottom Plate Removed Loosen cylinder head capscrews If the cylinder head is stuck tap the center of the cylinder head with a wooden or lead mallet Do not strike the side of the cylinder head Be careful notto drop the head or dam age the gasket sealing surface Remove cylinder head bolts and gasket see Figure 6 7 Remove valve stop
67. is only applicable to units with Auto Fresh If not configured the mode is permanently deactivated and CD 43 will display When mode is Cd43 Air Slide Mode available it can be set OFF AUTO USER or TEST After AUTO or USER mode has been selected and entered the user may use function code 45 and 46 to make desired changes This code is only applicable to units with Auto Fresh If not configured the per Cd44 Slide Opening cent opening is permanently deactivated and Cd44 will display 5 When percent opening is available it can be set to 0 to 100 Cd45 Air Slide Timer This code is enabled only if Air Slide Mode is AUTO or USER If not Cd45 will software revision 5125 Codes 43 45 consolidated Code 43 and Codes Cd44 Cd45 were reassigned Code Cd43 is a user selectable mode of operation that allows the opening and closing of a mechanical air vent door via a stepper motor These selection modes are as follows OFF Air makeup vent will remain closed User Allows for manual selection of the setting Delay The opening of the door is based on selected time return temperature and flow rate percent opened Cd43 AutoFresh Mode gASLM The opening is based percent open and CO2 and O2 selectable limits LM This selection is only active if the unit has a CO2 sensor TEST CAL CO2 sensor option units only The door will fully open and c
68. operation are provided in paragraph 4 10 7 1 T 285 LEGEND SYMBOL DESCRIPTION Schematic Location SYMBOL DESCRIPTION Schematic Location AMBS AMBIENT SENSOR 19 HS HUMIDITY SENSOR G 20 BM BYPASS MODULE D 20 HST HOSE HEATER SAFETY THERMOSTAT G 14 CB1 CIRCUIT BREAKER 460 VOLT J 1 HTT HEAT TERMINATION THERMOSTAT 12 CB2 CIRCUIT BREAKER AUTO TRANSFORMER D 1 HWH HUMIDITY WATER HEATER Figure 7 4 CCH CRANKCASE HEATER T 2 HWP HUMIDITY WATER PUMP Figure 7 4 CF CONDENSER FAN CONTACTOR M 10 P 6 IC INTERROGATOR CONNECTOR FRONT REAR CFS CONDENSER FAN SWITCH L 10 7 19 20 COMPRESSOR CONTACTOR 9 6 P 1 INTERNAL PROTECTOR F7 7 H 10 CI COMMUNICATIONS INTERFACE MODULE A 3 15 COOL LIGHT H 6 MDS MANUAL DEFROST SWITCH H 15 eM CONDENSER FAN MOTOR T 6 PDR PUMP DIRECTION RELAY Figure 7 4 1 PRIMARY CPT CONDENSER PRESSURE TRANSDUCER 20 PR POE CACTUS CPDS COMPRESSOR DISCHARGE SENSOR C 19 EM EMOTE MONITORING CPSS COMPRESSOR SUCTION SENSOR 19 H 6 L 13 L 15 CR CHART RECORDER TEMPERATURE RECORDER RRS RETURN RECORDER SENSOR D 19 or M17 Figure 7 4 RTS RETURN TEMPERATURE SENSOR 0 19 cs CURRENT SENSOR M 2 1 EVAPORATOR FAN 1 LOW DHBL DEFROST HEATER BOTTOM LEFT T 5 G 11 J 11 R 8 DHBR DEFROST HEATER BOTTOM RIGHT T 5 S
69. or if the suction modulation valve SMV is open beyond the control ler desired point Table 3 6 Controller Alarm Indications Sheet 3 of 3 Disch T Alarm 64 is triggered if the discharge temperature sensed is greater than 135 AL64 275 for three continuous minutes if it exceeds 149 300 or if the sen Sor is out of range This is a display alarm and has no associated failure action Alarm 65 is triggered by a compressor discharge transducer reading outside the 165 Discharge Pressure valid range of 73 20 cm Hg 30 Hg to 32 34 Kg cm 460 psig This is a dis play alarm and has no associated failure action Scion Pressure Alarm 66 is triggered by a suction pressure transducer reading outside the valid AL66 Transd Failure range of 73 20 cm Hg 30 in Hg to 32 34 Kg cm 460 psig This is a display alarm and has no associated failure action Humidity S Alarm 67 is triggered by a humidity sensor reading outside the valid range of 0 AL67 cote Se to 100 relative humidity If alarm AL67 is triggered when the dehumidification are mode is activated then the dehumidification mode will be deactivated Alarm 68 is triggered by a condenser pressure transducer reading outside the Aces Condenser Pressure valid range of 73 20 cm Hg 30 in Hg to 32 34 Kg cm 460 psig This is a dis play alarm and has no associated failure action Alarm 69 is triggered by a suction temperature sens
70. removing capacitor s WARNING Before removing the capacitors the terminals must be checked for voltage with a multimeter The discharge resistors installed on the unit capacitors should bring the voltage to a safe level in a minute However there may be a broken resistor that retains voltage for a longer period it is highly recommended to wait 15 minutes and to check for voltage 1 The capacitors are located on the unit sidewall above the evaporator fan deck and may be removed by two methods a container is empty open upper rear panel of the unit The capacitors will be on the right and may be serviced after disconnecting power plug 6 33 b f container is full turn the unit power OFF and disconnect power plug Remove the upper fresh air makeup vent WARNING With power OFF discharge the capacitor and disconnect the circuit wiring c Checking the capacitor If the capacitor is suspected of malfunction you may choose to simply replace it Direct replacement requires a capacitor of the same value Two methods for checking capacitor function are 1 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 The reading should read about 330 000 ohms for a good capacitor due to the di
71. shown in Figure 6 28 Heattubing to shrink over splice Make sure all seams are sealed tightly against the wiring to prevent mois ture seepage Slide large heat shrink tubing over both splices and shrink CAUTION Do not allow moisture to enter wire splice area as this may affect the sensor resis tance m Reinstall sensor refer to paragraph 6 22 3 NOTE The P5 Pre Trip test must be run to inactivate probe alarms refer to paragraph 4 8 T 285 REPLACEMENT 2 WIRE TO 2 WIRE OR 3 WIRE TO 3 WIRE REPLACEMENT FOR DUAL SINGLE SENSOR CONFIGURATION Sensor ame BLACK RED WHITE Cable Large Heat Shrink Tubing Figure 6 28 Sensor and Cable Splice 6 22 3 Sensor Re Installation a Sensors STS SRS To properly position a supply sensor the sensor must be fully inserted into the probe holder This positioning will give the sensor the optimum amount of exposure to the supply air stream and will allow the Controller to operate correctly Insufficient probe insertion into the probe holder will result in poor temperature control due to the lack of air flow over the sensor It is also necessary to ensure that the probe tip does not contact the evaporator back panel The design minimum clearance of 6 mm 1 4 inch should be maintained see Figure 6 29 b Sensor RTS RRS Reinstall the return sensor as shown in Figure 6 30 For proper placement of the return sensor be sure to position the seal sec
72. spacer 16 3 Assemble The Evaporator Fan Assembly Assemble the motor and plastic spacer onto the sta tor Apply loctite to the 1 4 20 x 3 4 long bolts and torque to 0 81 mkg 70 inch pounds Place one 5 8 flat washer on the shoulder of the fan motor shaft Insert the key in the keyway and lubricate the fan motor shaft and threads with a graphite oil solution such as Never seez Install the fan onto the motor shaft Place one 5 8 flat washer with a 5 8 18 locknut onto the motor shaft and torque to 40 foot pounds Install the evaporator fan assembly in reverse order of removal Torque the four 1 4 20 clamp bolts to 0 81 mkg 70 inch pounds Apply power momentarily to check for proper fan rotation refer to paragraph 2 3 If fan spins backward then motor wiring or motor 1 defective T 285 f Replace access panel making sure that panel does not leak Make sure that the T I R locking device is lockwired 6 17 EVAPORATOR FAN MOTOR CAPACITORS Units are equipped with one of 2 types of evaporator fan motors single and dual capacitor The evaporator fan motors are of the permanent split capacitor type 6 17 1 When To Check For A Defective Capacitor Fan motor will not change speed For example in the conventional perishable mode the motors should run in high speed In the economy perishable mode they should switch speeds and in the frozen mode the mo tors should run in low speed NOTE The evaporator
73. the proper model dash number For example to program a model number 69NT40 511 100 press the UP or DOWN ARROW key until the display shows 511 on the left display and 100 on the right If a defective card is being used the Display will blink the message bAd Turn start stop switch OFF and remove the card 5 Press the ENTER key on the keypad 6 When the software loading has successfully com pleted the Display will show the message donE If a problem occurs while loading the soft ware the Display will blink the message Pro FAIL or bad 12V Turn start stop switch OFF and remove the card Turn unit OFF using start stop switch ST T 285 6 20 8 Remove the programming card from the program ming software port and return the unit to normal op eration by placing the start stop switch in the ON position 6 21 4 Removing and Installing the Controller a Removal 1 Disconnect all front wire harness connectors MA MB MC KA amp KB and move wiring out of way The lower controller mounting is slotted loosen the top mounting screw see Figure 6 26 and lift up and out 2 Disconnect the two back connectors EC and re move module When removing the replacement controller from its packaging note how it is packaged When returning the old controller for service place it in the packaging in the same manner as the replacement The pack aging has been designed t
74. the temperature tester is properly calibrated before using If a temperature tester is not available the thermistor reading may be obtained using an accurate Ohmmeter To read the thermistor place one probe of ohmmeter in the middle of the receptacle provided on the chart platen and ground other probe to unit Note reading on meter and using Table 6 2 convert resistance to temperature b Check With Ice Bath Checking of the temperature recorder stylus reading is accomplished by comparing the stylus reading against a known temperature at the sensing bulb To properly check the temperature indication the sensing bulb T 285 should be stabilized at atemperature 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 three to five times to be certain temperature has stabilized at O C 32 F If the temperature indicated by the recorder differs from 0 82 F more than 0 6 C 1 F when compressor cycles off rezeroing must be performed Unit Off Place the recording thermometer 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 filling voids between ice with water and agitating until mixture reac
75. 0 250 vac 1 5 hz Humidity Power FH h Compressor Crankcase Heater 180 watts 460 vac T 285 2 8 Orange wire Red wire Brown wire Input voltage Output voltage i Humidity Sensor E 3 Output voltage readings verses relative humidity RH percentage 0 99 V 0 1 65 V 70 2 31 V j Controller Setpoint Range 30 to 30 22 to 86 F 2 4 SAFETY AND PROTECTIVE DEVICES Unit components are protected from damage by safety and protective devices listed in the following table These devices monitor the unit operating conditions and open a set of electrical contacts when an unsafe condition occurs Open safety switch contacts on either or both of devices IP CP or HPS will shut down the compressor Open safety switch contacts on device IP CM will shut down the condenser fan motor The entire refrigeration unit will shut down if one of the following safety devices open a Circuit Breaker s b Fuse F3 15A or c Evaporator Fan Motor Internal Protector s IP EM Table 2 1 Safety and Protective Devices UNSAFE CONDITION SAFETY DEVICE DEVICE SETTING Circuit Breaker CB 1 Circuit Breaker CB 2 50 amp Manual Reset Excessive current draw Manual Reset Trips at 29 amps 460 vac Trips at 62 5 amps 230 vac Circuit Breaker CB 2 70 amp Manual Reset Trips at 87 5 amps 230 vac Excessive current draw in the 10 amp rating Excessive current draw by the Excessive
76. 0 C the closed values will decrease to the same value as the open setting Bulb mode is terminated when 1 Bulb mode code Cd35 is set to Nor 2 Dehumidification code Cd33 is set to Off 3 The user changes the set point to one that is in the frozen range When bulb mode is disabled by any of the above the evaporator fan operation for dehumidification reverts to alt and the DTS termination setting resets to the value determined by controller configuration variable CnF41 T 285 3 3 12 Temperature Control Frozen Mode With configuration variable CnF26 set to 10 C the frozen mode of operation is active with set points at or below 10 C 14 F With the variable set to 5 C the frozen mode is active at or below 5 C 23 When in the frozen mode the controller maintains the return air temperature at set point the RETURN indicator light will be illuminated on the display module and the default reading on the display window will be the return air probe reading When the return air temperature enters the in range temperature tolerance as selected at function code Cd30 the in range light will energize 3 3 13 Frozen Mode Conventional Frozen range cargos are 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 unit Temperature control in the frozen range is accomplish
77. 0 Element Supply 2 Voltage Indicator 11 Return Temperature Sensor Assembly 3 Indicator Test Switch 12 Recorder Box 4 Battery C size Alkaline 13 Recorder Door 5 Chart Nut 14 Setscrew Adjustment 6 Stylus Supply 15 Stylus Return 7 Stylus Lifter Supply 16 Stylus Lifter Return 8 31 Day Timer 17 Element Return 9 Setscrew Adjustment 18 Bushing and Nut Figure 6 33 Saginomiya Temperature Recorder T 285 6 28 6 26 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 6 27 COMPOSITE CONTROL BOX REPAIRS 6 27 1 Introduction This procedure provides instructions for repair of the Carrier Transicold composite control box Damage to the control box may be in the form of a chip or hole a crack a damaged thread insert or damage to the door hinge inserts Generally the object of the repair must be to ensure sufficient strength is restored to
78. 1 16 Pipe Plug Crankshaft 1 8 20 pipe Oil Return Check Valve Crankcase 1 4 20 pipe 20 25 27 34 Pipe Plug Gauge Connection Connecting Rod Capscrew 2 10 3 12 15 16 20 Plate Crankcase 12 16 16 22 Side Shield 1 4 6 8 12 2 Oil Pump Drive Segen 16 22 Unloader Valve Cover Plate Plate End 16 20 27 Bearing Head Terminal Block Cap Screws 8 0 8 5 16 18 Suction Valve Pump End Bearing Head 3 8 16 40 50 55 70 Bottom Plate Crankcase Compressor Foot Cylinder Head 7 16 Motor End Cover Crankcase 58 Crankshaft 5 8 Oil Bypass Plug Crankcase Oil Pump Drive Segment 1 1 2 18 NEF 35 45 48 62 Oil Level Sight Glass NEF National Extra Fine 3k 285 6 34 Table 6 9 R 134a Temperature Pressure Chart 6 ommna rorem 40 40 14 6 49 4 37 08 0 49 20 29 3 5 11 9 8 89 0 12 O o bar 258 026 026 e ss 593 ose a 068 oer 38 airs 120 1187 2 798 572 140 147 Temperature 21 2 4 2 6 5 0 46 7 6 2 4 EUN E BE m EL p Uu Es 10 12 14 6 35 Temperature Pressure _ 6 psig kgem bar a o zs 195 192 50 500 450 EM 727 wer 5578 610 598 65 70 21 75 5 5 8 16
79. 1 4 inch Mounting Stud Type 40 mm 1 1 2 inches 6 3 mm 1 4 inch ensor Figure 6 27 Sensor Types 6 21 d Prepare the cables by cutting wires to the opposite of the sensor See Figure 6 28 When installing a single wire color two wire sensor cut one wire of existing two wire cable 40 mm 1 1 2 inch shorter than the other wire When replacing two single sensors with a combina tion three wire sensor the black wires of the cables should be cut to the same length and the red wire of one cable cut to the shorter length When replacing a original three wire sensor cut the black wire to the middle length and the red wire to the shorter length Strip back insulation on all wiring 6 3 mm 1 4 inch Slide a large piece of heat shrink tubing over the cable and place small pieces of heat shrink tubing one over each wire before adding crimp fittings as shown in Figure 6 28 If required slide the cap and grommet assembly onto the replacement sensor If the replacement sensor is of alarger diameter than the original a different grom met may be required Slip crimp fittings over dressed wires keeping wire colors together Make sure wires are pushed into crimp fittings as far as possible and crimp with crimp ing tool Solder spliced wires with a 6096 tin and 40 lead Rosincore solder Slide heat shrink tubing over splice so that ends of tubing cover both ends of crimp as
80. 12 volts e Repeat for pins C and D wires 2 A and 2 B f If only one set of pins reads a voltage check connec tions and retest g If the retest reads out the same the drive module or controller is faulty h If no voltage is present in any step the output from the controller to the drive module may be faulty and will require checking the connections and wires from the controller to the drive module Refer to step 6 18 4 i To replace the drive module disconnect all connec tors unscrew from mounting and replace with a NEW drive module in reverse order 6 18 4 Checking The Controller Turn the unit OFF b Disconnect the six pin connector to the stepper drive from the controller c With the voltmeter set to read 50 volts DC attach the positive lead to outlet pin A ofthe six pin connector T 285 and the negative lead to B or TP 9 of the con troller Turn ON the unit for 40 seconds and watch the volt meter There should be approximately 24 to 32 VDC shown on There should be zero volts on pin B After a short delay the reading should rise to approx imately 24 to 32 VDC on pin E Pins and D will have zero to 5 volts transistor logic TTL signals present however this can only be checked with the connector assembled as this is an open collector type circuit By checking the outputs on A and E it can be verified th
81. 2 EVAPORATOR FAN CONTACTOR 2 LOW DHH DRAIN HOSE HEATER 1 14 J 11 K 11 R 10 DHML DEFROST HEATER MIDDLE LEFT T 5 SD STEPPER MOTOR DRIVE C 20 DHMR DEFROST HEATER MIDDLE RIGHT R 5 SMV SUCTION MODULATING VALVE A 20 DEFROST HEATER TOP LEFT 5 SPT SUCTION PRESSURE TRANSDUCER K 20 DHTR DEFROST HEATER TOP RIGHT R 5 SRS SUPPLY RECORDER SENSOR L 20 BL DEFROST LIGHT M 13 ST START STOP SWITCH L 4 DPH DRAIN PAN HEATER R 5 STS SUPPLY TEMPERATURE SENSOR 20 DPT DISCHARGE PRESSURE TRANSDUCER L 20 TBU TRANSFORMER BRIDGING UNIT DTS DEFROST TEMPERATURE SENSOR 0 19 TC CONTROLLER RELAY COOLING K 7 DVM DUAL VOLTAGE MODULE E 1 TCC CONNECTOR Pigure La IONS DVR VOLTAGE RECEPTACLE F 2 15 CONTRO EG BEA WATER 1 EVAPORATOR FAN CONTACTOR 1 HIGH PUMP ATOMIZER Figure 7 4 o HM CONTROLLER RELAY HIGH E2 EVAPORATOR FAN CONTACTOR 2 HIGH SPEED EVAPORATOR FANS J 11 K 11 P 10 FIG 7 2 K 11 FIG 7 3 G 11 EB EMERGENCY BYPASS SWITCH L 8 CONTROLLER RELAY DEFROST D 14 ED EMERGENCY DEFROST SWITCH E 5 E 12 13 TFC TransFRESH CONTROLLER Figure 7 4 EDL EMERGENCY DEFROST LIGHT 1 12 TH CONTROLLER RELAY HEATING K 13 EF EVAPORATOR FAN CONTACTOR HIGH TI CONTROLLER RELAY IN RANGE 5 OR M 11 P 8 P 9 P 10 WATER PUMP REVERSE Figure 7 4 EM EVAPORATOR FAN MOTOR T 8 T 10 TN CONTROLLER RELAY CONDENSER FAN K 10 ES EVAPORATOR FAN CONTACTOR LOW
82. 30 psig AND the condenser fan remains ON for at least 30 seconds 1 UntWeght Refertountmodsinumberpate 0 5 0 2 kg cm 7 3 psig 1 6 0 4 kg cm 22 5 psig 32 7 2 5 kg cm 72 5 5 psig Rupture Disc part number 14 00215 04 may be installed as an alternate for the receiver mounted fusible plug Condenser Fan Starts i Condenser Pressure Transducer Condenser Fan Stops k Water Pressure Switch T 285 2 3 ELECTRICAL DATA a Circuit Breaker CB 2 50 amp Trips at b Compressor 17 6 amps 460 vac tul Eogu Amps FEAT with current limiting set at 21 amps 380 vac Single Phase 460 vac Single Phase 50 hz 60 hz Motor Rotations Per Minute 1725 rpm Voltage and Frequency 400 500 vac 2 5 hz Bearing Lubrication Rotation Number of Heaters Rating 750 watts 5 10 96 460 vac 9 Drain Pan Heaters Resistance cold Type Number of Heaters e Evaporator Coil Rating Heaters Resistance cold Type Sheath 380 vac 50 hz 460 vac 60 hz 1 6 2 0 Full Load Amps High Speed Full Load Amps Low Speed Nominal Horsepower High Speed Nominal Horsepower f Evaporator Fan Low Speed Motor s Rotations Per Minute High Speed 2850 rpm 3450 rpm Rotations Per Minute Low Speed 1425 rpm 1750 rpm Voltage and Frequency 360 460 vac 1 25 hz 400 500 vac 1 5 hz Voltage amp Frequency us 2 7 ing power autotransformer 180 230 vac 1 25hz 20
83. 32 set AL11 OrMotor to 1 only The alarm is triggered if the evaporator fan motor 1 Pend pro tector opens If the alarm is active probe check is deactivated Eva orator Motor 2 Alarm 12 is applicable to units with Single Evaporator Fan Capability CnF32 set AL12 to 1EFO only alarm is triggered if the evaporator fan motor 2 internal pro tector opens If the alarm is active probe check is deactivated Control Circuit F Alarm 20 is triggered by control power fuse F3 opening and will cause the soft AL20 Open 2 Aa USE ware shutdown of all control units This alarm will remain active until the fuse is replaced Alarm 21 is triggered by one of the fuses F1 F2 being opened on 18 volts AC AL 21 Micro Circuit Fuse power supply to the Controller The suction modulation valve SMV will be Open 18 vac opened and current limiting is halted Temperature control will be maintained by cycling the compressor Alarm 22 responds to the evaporator motor internal protectors On units with Nor mal Evaporator Fan Operation CnF32 set to 2EFO the alarm is triggered by AL22 Evaporator Fan opening of either internal protector It will disable all control units until the motor tor Safety protector resets On units with Single Evaporator Fan Capability CnF32 set to 1EFO the alarm is triggered by opening of both internal protectors It will disable all control units until a motor protector resets KA2 KB10 Jumper
84. 6 24 Suction Modulation Valve 6 16 Figure 6 25 Jumper Assembly 6 18 Figure 6 26 Controller Section of the Control Box 6 19 6 27 Sensor TYPOS een ep Meee eh DERE PRI 6 21 Figure 6 28 Sensor and Cable Splice 6 22 Figure 6 29 Supply Sensor Positioning 6 22 Figure 6 30 Return Sensor Positioning 6 22 Figure 6 31 Electronic Partlow Temperature Recorder 6 24 Figure 6 32 Partlow Mechanical Temperature Recorder 6 27 Figure 6 33 Saginomiya Temperature Recorder 6 28 Figure 6 34 Door Hinge Repair 2 4 6 29 Figure 6 35 Insert Localo e saisi IRI rM i 6 31 Figure 6 36 Communications Interface 6 32 Figure 6 37 134 Compressor Pressure and Motor Current Curves Versus Ambient Temperature 6 36 Fig re 7 T LEGEND 122 DR Ea md ta E 7 2 Figure 7 2 SCHEMATIC DIAGRAM Normal
85. 6 9 R 134a Temperature Pressure 6 35 T 285 viii SECTION 1 INTRODUCTION 1 14 INTRODUCTION The Carrier Transicold model 69 40 511 300 series units are of lightweight aluminum frame construction designed to fit in the front of a container and serve asthe container s front wall They are one piece self contained all electric units which includes cooling and heating systems to provide precise temperature control The units are suppled with a complete charge of refrigerant R 134a and compressor lubricating oil and are ready for operation upon installation Forklift pockets are provided for unit installation and removal The base unit operates on nominal 380 460 volt 3 phase 50 60 hertz power An optional autotransformer may be fitted to allow operation on nominal 190 230 3 phase 50 60 hertz power Power for the control system is provided by a transformer which steps the supply power down to 18 and 24 volts single phase The controller is a Carrier Transicold Micro Link 2i microprocessor controler will operate automatically to select cooling holding or heating as required to maintain the desired set point temperature within very close limits The unit may also be equipped with a mechanical or electronic temperature recorder The controller has a keypad and display for viewing or changing operating parameters The display is also equipped with lights to i
86. C 5 4 F The fans will continue to run in low speed for one hour At the end of the hour the evaporator fans will switch back to high speed and the cycle will be repeated 3 3 10 Perishable Mode Dehumidification The dehumidification mode is provided to reduce the humidity levels inside the container The mode is activated when a humidity value is set at at function code Cd33 The display module SUPPLY led will flash ON and OFF every second to indicate that 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 humidity sensor reading is above the set point 2 The Supply air temperature is less than 0 25 C above set point 3 The heater debounce timer three minutes has timed out 4 Heater termination thermostat HTT is closed If the above conditions remain true for at least one hour the evaporator fans will switch from high to low speed operation The evaporator fan speed will switch every hour thereafter as long as all conditions are met see Bulb Mode section for different evaporator fan speed options If any condition except for item 1 becomes false OR if the relative humidity sensed is 2 below the dehumidification set point the high speed evaporator fans will be energized In the dehumidification mode power is applied to the defrost and drain pan heaters This added heat load causes
87. Compressor The unit is fitted with a single speed reciprocating compressor T 285 1 3 11 Condenser Coil The unit may be fitted with a 2 row or 4 row coil using nominal 3 8 inch tubing or the unit may be fitted with a 3 row coil using 7mm tubing The required refrigerant charge is different for each coil 1 3 12 Autotransformer An autotransformer may be provided to allow operation on 190 230 3phase 50 60 hertz power The autotransformer raises the supply voltage to the nominal 380 460 volt power required by the base unit The autotransformer may also be fitted with an individual circuit breaker for the 230 volt power If the unit is equipped with an autotransformer and communications module the autotransformer will be fitted with a transformer bridge unit TBU to assist in communications 1 3 13 Temperature Recorder One of three recording devices may be fitted to the unit The devices include a mechanical recorder manufactured by Partlow Corporation a mechanical recorder manufactured by Saginomiya Corporation and an electronic recorder manufactured by Partlow Corporation 1 3 14 Gutters Rain gutters may be fitted over the control box and recorder section to divert rain away form the controls The different gutters include standard length bolted gutters extended length gutters and riveted gutters 1 3 15 Handles The unit may be equipped with handles to facilitate access to stacked containers These handles may
88. DESTINATIONS CHANGE FROM THE STANDARD ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS XXX Figure 7 6 WIRING DIAGRAM Single Evaporator Fan Capacity Units with Dual Capacitor Evaporator T 285 Fan Motors Sheet 1 7 8 of 2 FOR UNITS WITHOUT ELECTRONIC CR ONLY FOR CR WIRING SEE FIGURE 7 7 DE eR f MB DISPLAY MODULE O CCOCCCOOOCCAQCAQ i 9 1 pac DINEM SK 1 5 B 12 M89 OG 85 510 COMMUNICATIONS CONTROLLER GYG g 5 8 INTERFACE lt 811 4
89. E db 3 xz ud 690901 Ufo oiu OF ooz uv 58 Er 92 855 a a 8 VA NN LN gt 5 6 8 T 1 gt 91 sts gt fjes ES HLI 1 amp cras WIRES TO TR X2 a a Q2 HHT BLU EDL DF TFO P TFC 9 9 e GRO CHA HAS 5 N TRH4 KA12 EM2B 5 5 cetur CBRN aes DHH amp CR8 cHL3 CP tija 1 RT BLK CR GRD DUM SEE Figure 7 9 lt 3 y i L2 B 2 524 4 lt BLU aK 2 CM 9 TRANS AUTO L3 3 rs RED A f mM lt BRN B pECT2 rs T E OR DVR 6 L XL __ __ 6 2 D rEcx2 ec CB2 46053 60 4560 3 60 E 2 P2 lt lt 380 3 50 380 3 50 ICF MAY BE IN 1 CONTROL BOX GRD 5 NNN FCH32 BK DRI 46 RK 55 222 RNa Hw ami we Gee BES BRE WHT LX n o VY n WHT3 RED 7 gt T3 3 c L3 48 AGA AA 7 j cl T 7 GRN P E HPS is 230 2 60 SPT DPT HST TCC FDH e Val 190 3 50 BLK 4B DHH TRX2 Mem NOTE WHEN ED BM CFS IS ARE INSTALLED WIRE
90. E HIA REE 2080 4 rime mirim im mimm mim minimi 25 90 HU PU A I E iat i mmm mm MA W UH IE V AR 19 80 imirimimin mirmimimirmim mimimimim VITA dirum tmi um ATT m mimi imi mi mam mimimimim minima mirim im mim im mim minimi ml 24 00 vim IHE HIE HE IEEE UBI EHE HIE LH 7 IU alka LH E HH EH B AE ATEM RHUL inm m mmm ILI HH mm m mam mn HH inm mm m am ILU ME A HP HH LI PHI SAn SA 00 V TH 19 50 Mt HR LFU Lr ot t t Piet 1 5 00 ME IMAH AAIR AE AMANA ANAA t Hf LFU Hf e ot f iet ae 5 50 EU
91. ECH3 x KEYPAD 11 15 2 2h 9 MDS TPS DISPLAY MODULE MB 16 RECHARGEABLE BATTERY PACK 2 RRS SINGLE SENSOR ONLY 16 3 ANN 1 45 34 6 1 s s 4 s a 1 141312 116 8 1 1g 1 17 Mc 10111219 16 KA KB 1 F2 LJ CONTROLLER cl Q lt PROGRAMMING SLOT 18 B D E 6 K L M EC P R 5 W E 1 1 1 2 n n P 2 ri m 2 3 ri h 3 b h h 3 19 n B 29 8 E n O a CBA s BAC Y NNN ANN o F pa PRA MBINATION 30 On ONLY HS SPT g Sila 5 _ _ B 1 BRE BAS LAE 20 Opa OSTA 0 DCTP A or VPS Sce fig 7 4 PRI PR2 58 H 18 6D gt gt 60 6048 tise 2A ON gt E gt ON 2 55 51 90 51 51 0 SMV 52 90 52 e 5240 Figure 7 2 SCHEMATIC DIAGRAM Normal Evaporator Fan Operation 7 3 T 285
92. ENTS Continued PARAGRAPH NUMBER Page 6 14 THERMOSTATIC EXPANSION VALVE 6 12 6 14 1 Checking Superheat 6 13 6 14 2 Hermetic Valve Replacement 1 6 13 6 14 3 Semi Hermetic Valve 6 14 6 15 EVAPORATOR COIL AND HEATER ASSEMBLY 6 15 6 15 1 Evaporator Coil Replacement 6 15 6 15 2 Evaporator Heater Replacement 1 6 15 6 16 EVAPORATOR FAN AND MOTOR ASSEMBLY 6 15 6 16 1 Replacing The Evaporator Fan 6 15 6 16 2 Disassemble The Evaporator Fan Assembly 6 15 6 16 3 Assemble The Evaporator Fan 6 15 6 17 EVAPORATOR FAN MOTOR CAPACITORS 6 16 6 17 1 When To Check For A Defective Capacitor 6 16 6 17 2 Removing The 6 16 6 17 3 Checking The
93. Evaporator Fan Operation 7 3 Figure 7 3 SCHEMATIC DIAGRAM Single Evaporator Fan Capability 7 4 Figure 7 4 SCHEMATIC DIAGRAM TransFRESH Vent Position Sensor VPS Humidity amp Recorders 7 5 Figure 7 5 WIRING DIAGRAM Normal Evaporator Fan Operation Units with Dual Capacitor Evaporator Fan Motors 7 6 Figure 7 6 WIRING DIAGRAM Single Evaporator Fan Capacity Units with Dual Capacitor Evaporator Fan Motors 7 8 Figure 7 7 WIRING DIAGRAM Normal Evaporator Fan Operation Units with Single Capacitor Evaporator Fan Motors 7 10 Figure 7 8 WIRING DIAGRAM Single Evaporator Fan Capacity Units with Single Capacitor Evaporator Fan Motors 7 12 Figure 7 9 WIRING DIAGRAM Electronic Partlow Temperature Recorder 7 14 vii T 285 LIST TABLES TABLE NUMBER Page Table 2 1 Safety and Protective 2 9 Table 3 1 Key Pad 3 2 Table 3 2 DataCORDER Configuration Variables 3 8 Table 3 3 DataCORDER Standard lt 8 8 eh 3 8 Table 3 4 Controller Configuration Variab
94. FT2 pem BRN c L EcL3 c Ecs2 K 2 2 D 1 ECJ2 n DHTR ECW2 K rer EMI 2 YOU ECHI DPH pu TFC 2 QQQT EMI Q QO er12 _ ECDs Um 2 gt 8 8 2 COMBINATION SINGLE SENSOR EDS V md GRD E GB SENSOR CONFIGURATION _ UN ED8 ECS1 K EST 272 g E g E n GRD Ecx K PR PC ANAK LE 2 B lt nagaiand i a lt Iu mcacmacma 55 og o 9 x 11 55 2 2 lt 2 E E2A2 gt 2 T dea I gah fgg c SN LAK HWH RYH craz N WHA 1 gt gt WHTT E a o WA t A L2 d E N 3j 5 a d x Y Y Y 5 6 89 21 Apes 2
95. Fan Defective wiring Will not control Fuse F1 F2 blown 5 3 T 285 5 10 EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW 5 11 THERMOSTATIC EXPANSION VALVE MALFUNCTION Low refrigerant charge External equalizer line plugged Wax oil or dirt plugging valve or orifice Ice formation at eM 14 valve seat Superheat too high Power assembly failure Loss of Loss ofelement bulb charge Loss ofelement bulb charge da REMEDY CONDITION POSSIBLE CAUSE REFERENCE SECTION Broken capillary i Broken capillary i Foreign material in vave ssi Foreign material in vave ssi in valve Superheat setting too low ME en pressure with low External equalizer line plugged Ice holding valve open Foreign material in valve expansion valve eroded or held open by M 6 14 Improper bulb location or installation Fluctuating suction pressure Low superheat setting 5 12 AUTOTRANSFORMER MALFUNCTION i 5 13 WATER COOLED CONDENSER OR WATER PRESSURE SWITCH High discharge pressure p 6 12 Noncondensibles Water pressure switch malfunction Condenser fan starts and stops Water supply interruption T 285 5 4 SECTION 6 SERVICE NOTE To avoid damage to the earth s ozone layer use a refrigerant recovery system whenever removing refriger ant When working with refrigerants you must comply with all local government environmental laws I
96. Fan Motors Sheet 1 of 2 T 285 7 10 FOR UNITS WITHOUT ELECTRONIC CR ONLY FOR CR WIRING SEE FIGURE 7 7 axe MB DISPLAY MODULE OD 0 OG ji PFE su dr ke cc 1 5 lt 12 MBS OG 6 KEYWAY SIDE COMMUNICATIONS CONTROLLER INTERFACE MB11 MODULE Qf MAINS POWER 59 12 4 FUSE X 813 e 2 SENSOR ONLY 5 MESA IF EQUIPPED e GSS 7
97. Filter Drier 1 Test for a restricted or plugged filter drier 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 Check the moisture liquid indicator if the indicator shows a high level of moisture the filter drier should be replaced b To Replace Filter Drier 1 Pump down the unit refer to paragraph 6 4 and replace filter drier Evacuate the low side in accordance with paragraph 6 6 After unit is in operation inspect for moisture in sys tem and check charge 6 14 THERMOSTATIC EXPANSION VALVE The thermal expansion valve see Figure 2 2 is an automatic device which maintains constant superheat ofthe refrigerant gas leaving the evaporator regardless of suction pressure The valve functions are 1 Automatic control of the refrigerant flow to match the evaporator load 2 Prevention of liquid refrigerant entering the com pressor Unless the valve is defective it seldom requires maintenance other than periodic inspection to ensure that the thermal bulb is tightly secured to the suction line 2 3 and wrapped with insulating compound See g Subtract the saturation temperatures determined in Figure 6 19 On units fitted with asemi hermetic valve step f from the temperatures measured in step e check to be sure the excess capillary is secured to the The difference is the superheat of t
98. LIA zo UNITS WITHOUT 495 iz les 60 52 61 DO c 0 2 ED ONLY e E E E E SN i gt Hl SMV 99070 ic Bc a D lt 322 2 Gy Ent ARR BEE Sy gt 2 us 2 2888 Oe dz 1 i KB7 1 S 65626 69 AES M ALL 1 FCR 10 NOTE WHEN EB ED BM CFS IS ARE INSTALLED WIRE DESTINATIONS CHANGE FROM THE STANDARD ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS XXX Figure 7 5 WIRING DIAGRAM Normal Evaporator Fan Operation Sheet 2 of 2 Units with Dual Capacitor Evaporator Fan Motors 7 7 285 6 5 4
99. P switch is placed in the 4 ON position the controller will energize the compressor crankcase heater Operation of the heater will warm the oil and boil off any liquid refrigerant that may be present in the crankcase If Pre Trip is initiated during the 30 minute time period Pre Trip will be allowed to run normally Once Pre Trip is over the controller will revert to its normal control mode logic Refer to Table 3 4 3 3 8 Perishable Mode Conventional The unit is capable of maintaining supply air temperature to within 0 25 0 5 F of set point Supply air temperature is controlled by positioning of the suction modulation valve SMV cycling of the compressor and cycling of the heaters When pulling down from a temperature that is more than 5 C 9 F above set point the SMV will open to reduce the pulldown time However pressure and current limit functions may restrict the valve if either exceeds the preset value The Operational Software is designed so the SMV will begin to close as the set point is reached The SMV will continue to close and restrict refrigerant flow until the capacity of the unit and the load are balanced If the temperature drops below the set point the compressor will remain running for a few minutes This is to accommodate any initial undershoot which might occur After this time has expired and the temperature is 0 2 C 0 4 F or greater below the set point the compressor will be turn
100. R Software Figure 3 3 Display Module ALT Mode The remaining keys function the same as described above except the Fhe Monte i M readings or changes are made to the The display module Figure 3 3 consists of five digit DataCORDER programming displays and seven indicator lights The indicator lights include 5 Supply Yellow LED Energized when the supply air 1 Cool White LED Energized when the refrigerant probe is used for control When this LED is illuminated compressor is energized the temperature displayed in the AIR TEMPERATURE 2 Heat Orange LED Energizedto indicate heater op display is the reading at the supply air probe This LED eration in the heat or defrost mode will flash if dehumidification or humidification is en abled 3 Defrost Orange LED Energized when the unit is in ine derasi mode 6 Return Yellow LED Energized when the return air 4 In Range Green LED Energized when the con probe is used for control When this LED is illuminated trolled temperature probe is within specified tolerance the temperature displayed in the AIR TEMPERATURE of set point display is the reading at the return air probe This LED will flash if dehumidification or humidification is en NOTE abled The controlling probe in the perishable range is the SUPPLY air probe and the controlling probe 7 Alarm Red LED Energized when there is an active in the frozen range is the RETURN air probe or
101. SA SS wow 5052 KEYWAY SIDE 4 g BMS2 T 3 5 E nnb re 9 92 2 SIDE 8 gt gt 8 SENSOR ONLY s 5 M 3 ED ONLY 8 588 0101919099 55 ose 7 00008 o amp 1 PE rem 2 2 m m Det 22 PACK O EE life GT io AAA AA tT tte 9 2 2888 5 lt ep 52 51 28 24 18 14 1 DF KB7 L p stio lL 10 Cro ED11 NOTE WHEN ED BM OR CFS IS ARE INSTALLED WIRE DESTINATIONS CHANGE FROM THE STANDARD ADDRESSES FOR THE CHANGED DESTINATIONS ARE SHOWN IN BRACKETS XXX Figure 7 6 WIRING DIAGRAM Single Evaporator Fan Capacity Units with Single Capacitor Evaporator Fan Motors Sheet 2 of 2 7 13 T 285 os lt COMMUNICATIONS INTERFACE MODULE 4 E MAINS POWER CO FUSE 2 AT EQUIPPED cic OOOO COOOOO CID TRX2 PHASE 1 FUSE IF EQUIPPED CB23 22 CB21 PHASE 2 FUSE 1 AT EQUIPPED PHASE 3 FUSE CIF EQUIPPED
102. TE MONITORING RECEPTACLE If remote monitoring is required connect remote monitor plug at unit receptacle See item 9 Figure 2 6 When the remote monitor plug 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 4 6 STARTING AND STOPPING INSTRUCTIONS WARNING Make sure that the unit circuit breaker s CB 1 amp CB 2 and the START STOP switch ST are in the OFF position before connecting to any electrical power source 4 6 4 Starting the Unit 1 With power properly applied the fresh air damper set and if required the water cooled condenser con nected refer to paragraphs 4 2 4 3 amp 4 4 place the START STOP switch to I ON 2 Continue with Start Up Inspection paragraph 4 7 4 6 2 Stopping the Unit To stop the unit place the START STOP switch in position 0 OFF 4 7 START UP INSPECTION 4 7 1 Physical Inspection a Check rotation of condenser and evaporator fans b Check compressor oil level Refer to paragraph 6 8 6 4 7 2 Check Controller Function Codes Check and if required reset controller Function Codes 27 through Cd39 in accordance with desired operating parameters Refer to paragraph 3 2 2 4 7 3 Start Temperature Recorder Partlow Recorders a Open recorder
103. TP TEST POINT E 15 E 17 G 10 J 10 K 7 K 13 M 12 R 8 R 10 M 15 FIG 7 4 amp FIG 7 2 K 11 FIG 7 3 F 11 F FUSE D 5 TQ CONTROLLER RELAY WATER TANK HEATER FCR FUSE CHART RECORDER Figure 7 4 Figure 7 4 FDH FUSE DRAIN LINE HEATER E 14 TR TRANSFORMER M 3 FED FUSE EMERGENCY DEFROST E 5 TRANS AUTO TRANSFORMER 230 460 D 3 Ed FUSE HUMIDITY Figure 7 4 TransFRESH REAR CONNECTOR Figure 7 4 er FUSE TransFRESH Figure 7 4 TS CONTROLLER RELAY NOT USED D 15 HA HUMIDITY ATOMIZER Figure 7 4 TV Nae A HHT HOSE HEATER THERMOSTAT J 14 uE WH HEATER RELAY Figure 7 4 HERS HUMIDITY FOWER RELAY Figure 7 4 WHTT WATER HEATER TERMINATION THERMOSTAT HPS HIGH PRESSURE SWITCH J 7 Figure 7 4 HPT HUMIDITY POWER TRANSFORMER Figure 7 4 WP WATER PRESSURE SWITCH F 10 HR HEATER CONTACTOR M 13 P 3 T 285 Figure 7 1 LEGEND 7 2
104. a low reading Take readings of temperature and pressure every three to five minutes for a total of 6 readings f Fromthetemperature pressure chart Table 6 9 de termine the saturation temperature corresponding to Figure 6 20 Expansion the evaporator outlet test pressures at the suction modulation valve 1 Pump down the unit per paragraph 6 4 Braze Rod Copper Tube Sil Phos 5 5 Silver 6 Phosphorus Apply heat for 10 15 seconds Bi metallic Tube Connection Apply heat for 2 5 seconds Use of a wet cloth is not neces sary due to rapid heat dissipation of the bi metallic connections Figure 6 21 Hermetic Thermostatic Expansion Valve Brazing Procedure 6 13 T 285 2 Remove cushion clamps located on the inlet and out let lines 3 Unbraze the equalizer connection 1 4 the outlet connection 5 8 and then the inlet connection 3 8 See Figure 6 21 Be careful to protect the in sulation on the heaters and their wires 4 Remove insulation Presstite from expansion valve bulb 5 Unstrap the bulb located below the center of the suction line 4 o clock position and remove the valve b Installing the Expansion Valve 1 Clean the suction line with sandpaper before instal ling bulb to ensure proper heat transfer Apply ther mal grease to the indentation in the suction line 2 Strap the thermal bulb to the suction line making sure bulb is placed firmly i
105. afety 1 INTRODUCTION eign cee wep ee wa walle necare pene mcr e Wel ane 1 1 Tat INTRODUCTION bete e cre RAL Lr TR ir ERROR E etre a Pals ee De E 1 1 12 CONFIGURATION IDENTIFICATION 1 1 1 3 OPTION DESCRIPTION us adie eae Saw are ieee ed TOES 1 1 1 32 c Battery s cte p ee e eu eg ce eee tiet 1 1 123 2 Deh rmidifICatlOr rer ER ER UE ERU ERU Rr eei 1 1 1 3 9 Gonttol BOX ER epi ee e BW pt Sha 1 1 1 3 4 Temperature Readout 2o cles Il IRI Lew EID EAR IRR RADO 1 1 1 3 5 Pressure Readout E Ri Rut eub 1 1 1 9 6 USDA oe RERO Ese gae oit 1 1 1 3 7 Interrogator eode DER te en UPC PLE UO EE E 1 1 1 3 8 Remote Monitoring ELDER etuer Re EE e Ae MR HER 1 1 1 3 9 Gomrnurnicalioris zo ceo Cete aoa sean ada aca eR 1 1 1 810 Compressor 2 9 m doe Lo e tesi b ice E 1 1 1 82 Condenser mir tree m Dad e ea Dr ae 1 2 1 3 12 acea ane 1 2 1 3 13 Temperature Recorder secet pA rA eta ADR RU RR ARA 1 2 1 914 GUES eyecare rk Ip PE i PEE EE 1 2 1 315 Handles I ERR xag Sw stig
106. ais 575 sf 82 A Gaye MBB p gp MA4 5 Ks CQ COP oTs Y Y HTT E1A2 5 1 06 03 3 Gp mes o WHT HTT CG BRN ED4 FED 01 EDS 5 4 MC BLK B 5 58 4 463 LWP 6 Ges 5 e 25 Gene 5 5 B5 4 5 Dg BQH NOTE RM MAY BE t OUTSIDE BOX SDDC 11 4 Ie e QQ 2 1 CIB f IBMDC SDON A D PHASE 1 BMON L FED 5 2 FUSE SDGDY STN pep Lm 1 AT Ed EE LIH IF EQUIPPED HSB Y g cers 5 2 t cpTe penes 5 FUSE 2 Qe E 1 AT C RN LOCATING TAB 22 5 EQUIPPED y E PHASE 3 I RRS 2 y ceat T9 FUSE PR2A 3 sT4 2 1 AT Nicrad 7 MDS1 NIcRE ICR GRD 1 CIE EQUIP PED Nicred CA Shi D oy 16 92 4 EB4 Nice 5 Ter ICR Y3 Y2 ICRC N C Geor PRI LED amp 4 r4 7 524 E Ee 5 09 V g GILEN B 8 IE Lena Ak AEAIR D
107. al noise stop the unit and investigate MAINTENANCE PRECAUTIONS Beware of unannounced starting of the evaporator and condenser fans Do not open the condenser fan grille or evaporator access panels before turning power off disconnecting and securing the power plug Be sure power is turned off before working on motors controllers solenoid valves and electrical control switches Tag circuit breaker and power supply to prevent accidental energizing of circuit Do not bypass any electrical safety devices e g bridging an overload or using any sort of jumper wires Problems with the system should be diagnosed and any necessary repairs performed by qualified service personnel When performing any arc welding on the unit or container disconnect all wire harness connectors from the modules in both control boxes Do not remove wire harness from the modules unless you are grounded to the unit frame with a static safe wrist strap In case of electrical fire open circuit switch and extinguish with never use water UNIT LABEL IDENTIFICATION To help identify the label hazards on the unit and explain the level of awareness each one carries an explanation is given with the appropriate consequences DANGER means an immediate hazard which WILL result in severe personal injury or death WARNING means to warn against hazards or unsafe conditions which COULD result in severe personal injury or death CAUTION means to warn against po
108. an inactive shutdown alarm in the alarm queue T 285 3 2 ONTROLLER icro Link 2i ith DagaCORDER 1 Mounting Screw 2 Micro Link 2i Controller 3 Connectors 4 Test Points Figure 3 4 Micro Link 3 1 3 Controller CAUTION Do not remove wire harnesses from con troller unless you are grounded to the unit frame with a static safe wrist strap CAUTION Unplug all controller wire harness connec tors before performing arc welding on any part of the container NOTE Do not attempt to service the controller Break ing the seal will void the warranty The Micro Link 2i controller is a single module microprocessor as shown in Figure 3 4 It is fitted with test points harness connectors and a software card programming port 3 2 CONTROLLER SOFTWARE The controller software is a custom designed program that is subdivided into the Configuration Software and the Operational Software The controller software performs the following functions a Control supply or return air temperature to required limits provide modulated refrigeration control elec tric heat control and defrost Defrost is performed to clear build up of frost and ice from the coil to ensure continuous conditioned air delivery to the load Provide default independent
109. an motor CF compressor motor CH evaporator 4 7 fan motors ES energized and the COOL light illumi nated See Figure 4 7 b When the air temperature decreases to a predeter mined tolerance above set point the in range light is illuminated ENERGIZED DE ENERGIZED FOR FULL DIAGRAM AND LEGEND SEE SECTION 7 POWER TO CONTROLLER CONTROL TRANSFORMER SIGNAL TO CONTROLLER Figure 4 7 Frozen Mode c Contacts TC and TN are opened to de energize the compressor and condenser fan motors when the re turn air temperature decreases to 0 2 C 0 4 F be low set point The cool light is also de energized d The evaporator fan motors continue to run to circulate air throughout the container The in range light re mains illuminated as long as the return air is within tol erance of set point e When the return air temperature increases to 0 2 0 4 F above set point and the three minute off time has elapsed relays TC and TN are energizes to re start the compressor and condenser fan motors The cool light is also illuminated 4 10 4 Sequence Of Operation Defrost The defrost cycle may consist of up to three distinct operations The first is de icing of the coil the second is a probe check cycle and the third is snap freeze Defrost may be requested by any one of the following methods 1 The manual defrost function also manual defrost switch function if equipped is initiated Through the use of
110. apping the component with a soft hammer to break the seal WARNING Do not use a nitrogen cylinder without a pressure regulator Do not use oxygen in or near refrigera tion system as an explosion may occur WARNING Do not open the condenser fan grille before turning power OFF and disconnecting power plug WARNING Oakite No 32 is an acid 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 WARNING Wear rubber gloves and wash the solution from the skin immediately if accidental contact occurs Do not allow the solution to splash onto concrete WARNING Always turn OFF the unit circuit breakers CB 1 amp CB 2 and disconnect main power supply before working on moving parts WARNING Make sure power to the unit is OFF and power plug disconnected before removing capacitor s WARNING With power OFF discharge the capacitor before disconnecting the circuit wiring WARNING The unit power plug must be disconnected to remove power from circuit breaker CB1 CAUTION Do not remove wire harnesses from controller unless you are grounded to the unit frame with a static safe wrist strap CAUTION Unplug all controller wire harness connectors before performing arc welding on any part of the con tainer T 285 Safety 2 SPECIFIC WARNING AND CAUTION STATEMENTS Continued CAUTION Pre trip inspection should not be performed with critical temperature cargoes
111. aragraph 3 5 and the results of each of the tests included in pre trip The data is time stamped and may be extracted via the Data Retrieval program Refer to Table 3 9 for a description of the data stored in the DataCORDER for each corresponding Pre Trip test 3 6 8 DataCORDER Power Up The DataCORDER may be powered up in any one of four ways 1 Normal AC power The DataCORDER is powered up when the unit is turned on via the stop start switch 2 Controller DC battery pack power If a battery pack is installed the DataCORDER will power up for communication when an interrogation cable is plugged into an interrogation receptacle 3 External DC battery pack power A 12 volt battery pack may also be plugged into the back of the interrogation cable which is then plugged into an interrogation port No controller battery pack is required with this method 4 Heal Time Clock demand If the DataCORDER is equipped with a charged battery pack and AC power is not present the DataCORDER will power up when the real time clock indicates that a data recording should take place When the DataCORDER is finished recording it will power down During DataCORDER power up while using battery pack power the controller will perform a hardware voltage check on the battery If the hardware check passes the Controller will energize and perform a T 285 software battery voltage check before DataCORDER logging If either test fails the real time clo
112. arm Configuration USDA Sensori Awo Onom acros Configuration USDA On Of 7 7 4069 NammConiguaionUSDASensors Ato On Of acro Configuration Cargo Sensor Amo On om b Configuration Software The configuration software controls the recording and alarm functions of the DataCORDER Reprogramming to the factory installed configuration is achieved via the same configuration card as the unit control module software Changes to the software may be made made using the Data View integration device A listing of the configuration variables is provided in Table 3 2 Descriptions of DataCORDER operation for each variable setting are provided in the following paragraphs 3 6 3 Sensor Configuration dCF02 Two modes of operation may be configured the Standard Mode and the Generic Mode a Standard Mode In the standard mode the user may configure the DataCORDER to record data using one of seven standard configurations seven standard configuration variables with their descriptions are listed in Table 3 3 The six thermistor inputs supply return USDA 1 2 3 and cargo probe and the humidity sensor input will be generated by the DataCORDER An example of a report using a standard configuration is shown in Figure 3 5 NOTE The DataCORDER software uses the supply and return recorder sensors The temperature control software uses the supply and return tem
113. ation CnF35 is enabled then humidification will be enabled and dehumidification locked out at set points of 7596 and above At set points be low 75 dehumidification will be enabled and dehumidification locked Cd34 Economy Mode Economy mode is a user selectable mode of operation provided for power saving On Off purposes Bulb mode is a user selectable mode of operation that is an extension of dehu midification control Cd33 If dehumidification is set to Off code Cd35 will dis Cd35 Bulb Mode play Nor and the user will be unable to change it After a dehumidification set point has been selected and entered for code Cd33 the user may then change code Cd35 to bulb After bulb has been selected and entered the user may then utilize function codes Cd36 and Cd37 to make the desired changes This code is enabled only if in the dehumidification mode code Cd33 and bulb mode Cd35 has been set to bulb If these conditions are not met alt will be displayed indicating that the evaporator fans will alternate their speed and the Evaporator Speed display cannot be changed If a dehumidification set point has been selected Select along with bulb mode then alt may be selected for alternating speed Lo for low speed evaporator fan only or Hi for high speed evaporator fan only If a setting other than alt has been selected and bulb mode is deactivated in any manner then selection reverts back to alt This code as wi
114. attery Internal Battery Replace ment Real Time Clock Modification Trip Start ISO Trip Header When entered via Interrogation program Economy Mode Start and End Auto 2 Pre Trip Start and End Bulb Mode Start Bulb Mode changes Bulb Mode End USDA Trip Comment Humidification Start and End USDA Probe Calibration 3 6 2 DataCORDER Software The DataCORDER Software is subdivided into the Configuration Software Operational Software and the Data Memory a Operational Software The Operational Software reads and interprets inputs for use by the Configuration Software The inputs are labeled Function Codes There are 35 functions see Table 3 8 page 3 24 which the operator may access to examine the current input data or stored data To access these codes do the following 1 Press the ALT MODE amp CODE SELECT keys Press an arrow key until the left window displays the desired code number The right window will display the value ofthis item for five seconds before returning to the normal display mode If a longer time is desired press the ENTER key to extend the time to 30 seconds T 285 Table 3 2 DataCORDER Configuration Variables CONFIGURATION NO TITLE DEFAULT OPTION dCFO1 Future Use dCF02 Sensor Configuration 2 5 6 9 54 64 94 Logging Interval Minutes 60 15 30 60 120 dooa Thermistor Format amp CF06 Gontrotied Atmosphere Humidiy Samping A ab A
115. atthe controller is supplying power to the drive module To be thorough and if it is desired the signals on pins C and D can be checked as follows 1 Install a jumper assembly Carrier part number 07 00408 00 to connect the drive module and con troller connectors as shown in Figure Figure 6 25 Connect the positive lead of the voltmeter to test connector socket C and negative lead to socket B and run as before by resetting unit 3 Repeat for sockets D and B Drive Module Connector SD Controller Connector EC Test Connector Figure 6 25 Jumper Assembly There should be approximately five volts DC on sockets C and D 81 and S2 when measured as above If not the connections or controller is faulty If any of these pins are not consistent the connections or controller is suspect Check and replace as required 6 18 5 Emergency Repair Procedures In the event that the SMV system has a failure and replacement components are not readily available the system can be by passed by removing the valve piston to remove the piston do the following a Perform a low side pump down Refer to paragraph b Remove SMV powerhead by loosening the 2 1 8 inch diameter nut see Figure 6 24 to relieve any pressure and then sliding the powerhead out Remove the piston by loosening the Allen screw and removing the piston and screw Install the powerhead assembly without the piston torque to 35 to
116. based on the conditions seen When the return air falls to 7 C 45 F the controller checks to ensure the defrost temperature sensor DTS reading has dropped to 10 C or below If it has not a DTS failure alarm is given and the defrost mode is operated by the return temperature sensor RTS If controller function code CnF33 is configured to snap freeze the controller will sequence to this operation The snap freeze consists of running the compressor without the evaporator fans in operation for a period of four minutes with the suction modulation valve at maximum allowed opening When the snap freeze is completed defrost is formally terminated 4 11 EMERGENCY OPERATION Operation by the refrigeration controller may be overridden by use of the EMERGENCY BYPASS or by use of the EMERGENCY DEFROST switch The EMERGENCY BYPASS switch functions to bypass the controller the event of controller failure The EMERGENCY DEFROST switch functions to bypass the controller and place the unit in the defrost mode 4 11 1 Emergency Bypass Operation To place the unit in the emergency bypass mode of operation cut the wire tie installed at the switch mounting see Figure 2 6 and place the switch in the EMERGENCY BYPASS COOLING position The switch is a normally open four pole switch which is placed in the EMERGENCY BYPASS COOLING position to a Provide power to the compressor contactor with the high pressure switch and compressor motor
117. ccurs an indication is given on the display but the unit will continue to run An alarm is indicated by flashing an alarm code on the display panel and for some alarms by the alarm light illuminating When an Alarm Occurs a The red alarm light will illuminate for 20 series alarms and alarm code number AL55 If a detectable problem is found to exist its alarm code will be alternately displayed with the set point on the left display c The user should scroll through the alarm list to deter mine what alarms exist or have existed Alarms must be diagnosed and corrected before the Alarm List can be cleared To Display Alarm Codes a While in the Default Display mode press the ALARM LIST key This accesses the Alarm List Display Mode which displays any alarms archived in the Alarm Queue The alarm queue stores up to 16 alarms in the se quence in which they occurred The user may scroll through the list by depressing an ARROW key c The left display will show AL where is the alarm number sequentially in the queue d The right display will show the actual alarm code will display for an active alarm where is the alarm code Or IA will display for an inactive alarm See Table 3 6 END is displayed to indicate the end of the alarm list if any alarms are active f CLEAr is displayed if all alarms are inactive The alarm queue may than be cleared
118. ck battery power up will be disabled until the next AC power cycle Further DataCORDER temperature logging will be prohibited until that time An alarm will be generated when the battery voltage transitions from good to bad indicating that the battery pack needs recharging If the alarm condition persists for more than 24 hours on continuous AC power the battery pack needs replacement 3 6 9 Pre Trip Data Recording The DataCORDER will record the initiation of a pre trip test refer to paragraph 3 5 and the results of each of the tests included in pre trip The data is time stamped and may be extracted via the Data Retrieval program Refer to Table 3 9 for a description of the data stored in the DataCORDER for each corresponding Pre Trip test 3 6 10 DataCORDER Communications Data retrieval from the DataCORDER can be accomplished using one of the following DataReader DataLine DataView or a communications interface module NOTE A DataReader DataLine DataView or a com munications interface module display of Com munication Failed is caused by faulty data transfer between the datacorder and the data retrival device Common causes include 1 Bad cable or connection between DataCORDER and data retrieval device 2 PC communication port s unavailable or misassigned 3 Chart Recorder Fuse FCR blown a DataReader The Carrier Transicold Data Reader see Figure 3 6 is a simple to operate hand held device designed to extract da
119. current draw the emergency defrost circuit Fuse FED 5 amp rating Excessive condenser fan mo tor winding temperature Internal Protector IP CM Automatic Reset E Excessive compressor motor _ winding temperature Internal Protector IP CP Automatic Reset Internal Protector s IP EM Excessive evaporator fan mo tor s winding temperature Abnormal pressures tempera tures in the high refrigerant side denser Abnormally high discharge pressure Fusible Plug Used on the Receiver Rupture Disc Used on the Water Cooled Con High Pressure Switch HPS Automatic Reset 99 210 F 35 kg cm 500 psig Opens at 25 kg cm 850 psig 2 9 T 285 2 5 REFRIGERATION CIRCUIT Starting at the compressor see Figure 2 7 upper schematic the suction gas is compressed to a higher pressure and temperature The gas flows through the discharge service valve into the pressure regulator valve During periods of low ambient operation the pressure regulator valve modulates the flow of refrigerant to maintain a pre set minimum discharge pressure Refrigerant gas then moves into the air cooled condenser When operating with the air cooled condenser active air flowing across the coil fins and tubes cools the gas to saturation temperature By removing latent heat the gas condenses to a high pressure high temperature liquid and flows to the receiver which stores the additional charge necessary for low tem
120. d and prevents operation with low coil temperatures In this mode of operation the quench valve will open as required to provide sufficient liquid refrigerant flow into the suction line for cooling of the compressor motor The quench valve senses refrigerant condition entering the compressor and modulates the flow to prevent entrance of liquid into the compressor The refrigeration system is also fitted with a condenser pressure transducer which feeds information to the controller When operating on the air cooled condenser the controller programming will operate the condenser fan so as to attempt to maintain discharge pressures above 130 psig in low ambients At ambients below 27 C 80 F the condenser fan will cycle on and off depending on condenser pressure and operating times 1 The condenser fan will start if the condenser pres sure is greater than 200 psig OR the condenser fan has been OFF for more than 60 seconds The condenser fan will stop if the condenser pres sure is less than 130 psig AND the condenser fan has been running for at least 30 seconds At ambients above 27 C 80 F condenser pressure control is disabled and the condenser fan runs continuously On systems fitted with a water pressure switch the condenser fan will be off when there is sufficient pressure to open the switch If water pressure drops below the switch cut out setting the condenser fan will be automatically started When operating a system fit
121. d Capillary The element and bulb are mercury filled 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 d The stylus reading will continue to fall below actual container temperature if a leak develops in the flange capillary or bulb To replace the temperature recorder element 1 2 Turn unit OFF and disconnect power source Remove upper back panel Remove bulb clamps securing bulb to unit Remove two flange screws from recording thermom eter If a thermistor is installed remove the fitting from the recorder platen Feed capillary and element through the unit CAUTION Recorder element capillary tubing may be bent but never sharper than 1 2 radius extra care should be taken when bending adjacent to welds The bulb should never be bent as this will affect calibration 3 Push replacement bulb and capillary through the unit Fill slots with silastic RTV432 Dow Corning Attach bulb clamps tightly to sensor Connect element flange to recorder making sure hub of flange faces out to fit into the hole in recorder box Install thermistor fitting if required Rezero the recorder Refer to sections 6 24 a through 6 24 d Install inlet air grille and upper panel Start unit and check recorder calibration
122. ded in Alarm List Failure 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 3 17 T 285 Table 3 6 Controller Alarm Indications Sheet 2 of 3 Battery Pack Failure Primary Supply Tem perature Sensor Failure STS DataCORDER Primary Return Tem perature Sensor Failure RTS Ambient Tempera 157 ture Sensor Failure Compressor High ALS8 Pressure Safety Heat Termination ALS9 Thermostat Defrost Temperature Sensor Failure Heaters Failure Compressor Circuit Failure Current Over Limit T 285 Alarm 53 is caused by the battery pack charge being too low to provide sufficient power for battery backed recording Renew replaceable batteries If this alarm on start up allow a unit fitted with rechargeable batteries to operate for up to 24 hours to charge rechargeable batteries sufficiently to deactivate the alarm Alarm 54 is activated by an invalid primary supply temperature sensor reading that is sensed outside the range of 50 to 70 C 58 F to 158 F or if the probe check logic has determined there is a fault with this sensor If Alarm 54 is activated and the primary supply is the control sensor the secondary supply sen sor will be used for control if the unit is so equipped If the unit does not have a secondary supply temperature sensor and AL54 is activated the primary return sensor reading minus 2 wi
123. denser change over to air cooled operation Bring the container temperature to approximately 1 7 35 F or 17 8 C 0 F Then set the control ler set point to 25 13 F to ensure that the suc tion modulation valve is at maximum allowed open position Partially block the condenser coil inlet air Increase the area blocked until the compressor discharge pressure is raised to approximately 12 kg cm 175 psig Onunits equipped with a receiver the level should be between the glasses On units equipped with a water cooled condenser the level should be at the center of the glass If the refrigerant level is not correct contin ue with the following paragraphs to add or remove re frigerant as required 6 7 2 Adding Refrigerant to System Full Charge a b d e Evacuate unit and leave in deep vacuum Refer to paragraph 6 6 Place cylinder of R 134a on scale and connect charg ing line from cylinder to liquid line valve Purge charg ing line at liquid line valve and then note weight of cyl inder and refrigerant Open liquid valve on cylinder Open liquid line valve half way and allow the liquid refrigerant to flow into the unit until the correct weight of refrigerant refer to paragraph 2 2 has been added as indicated by scales 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 Refe
124. desired test code is dis played 1 Individually selected tests other than the LED Dis play test will perform the operations necessary to verify the operation of the component At the conclu sion PASS or FAIL will be displayed This message will remain displayed for up to three minutes during which time a user may select another test If the three minute time period expires the unit will termi nate pre trip and return to control mode operation 2 While the tests are being executed the user may ter minate the pre trip diagnostics by pressing and hold ingthe PRE TRIP key Theunit will then resume nor mal operation If the user decides to terminate a test but remain at the test selection menu the user may press the UP ARROW key When this is done all test outputs will be de energized and the test selection menu will be displayed 3 Throughout the duration of any pre trip test except the P 7 high pressure switch tests the current and pressure limiting processes are active d Pre Trip Test Results At the end of the pre trip test selection menu the message rSLts pre trip results will be displayed Pressing the ENTER key will allow the user to see the results for all subtests i e 1 0 1 1 etc The results will be displayed as PASS or FAIL for all the tests run to completion since power up If a test has not been run since power will be displayed Once all pre test activity is completed
125. e 5 Fillthe tubes with this solution by filling from the bot tom See Figure 6 17 Important be sure to provide a vent at the top for escaping gas Vent Centrifugal pum 30 GPM at 35 head Globe Priming valves connection Pump Suction 2 DE Close vent pipe valve when pump is running Remove water regulating valve urs Return Fine mesh screen Figure 6 17 Water Cooled Condenser Cleaning Forced Circulation T 285 Allow the 32 solution to soak the tube Coils for several hours periodically pump circulating it with an acid proof pump An alternate method may be used whereby a pail see Figure 6 18 filled with the solution and attached to the coils by a hose can serve the same purpose by filling and draining The solution must contact the scale at every point for thorough de scal ing Air pockets in the solution should be avoided by regularly opening the vent to release gas Keep flames away from the vent gases The time required for de scaling will vary depending upon the extent of the deposits One way to deter mine when de scaling has been completed is to titrate the solution periodically using titrating equip ment 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 indicati
126. e 4 3 Controller Operation Perishable Mode 4 5 Figure 4 4 Controller Operation Frozen 4 6 Figure 4 5 Perishable Mode Cooling 2 4 6 Figure 4 6 Perishable Mode Heating 04 4 7 Figure 4 7 Frozen Mode urbes mE en eS Rev ES enr Y Rien tesa S P Rm 4 7 Figure 4 8 Detrost 208 ete e ELS s Leo ee LEER 4 8 Figure 6 1 Service Valve 6 1 Figure 6 2 Manifold Gauge Set 6 1 Figure 6 3 R 134a Manifold Gauge Hose 6 2 Figure 6 4 Refrigeration System Service Connections 6 2 Figure 6 5 Compressor Service Connections 1 6 4 Figure 6 6 Compressor s ek Rer RE E Y Rer c Ae RE UR RR AO 6 5 Figure 6 7 Exploded View of Valve 6 6 Figure 6 8 Bottom Plate Removed 1 2 6 6 Figure 6 9 Oil Pump and Bearing 6 7 Figure 6 10 Low Profile Oil
127. e oxygen in or near a refrigeration system as an explosion may occur NOTE The high pressure switch is non adjustable a Remove switch as outlined in paragraph 6 9 1 b Connect ohmmeter or continuity light across switch terminals Ohm meter will indicate no resistance or continuity light will be illuminated if the switch closed after relieving compressor pressure c Connect hose to a cylinder of dry nitrogen See Figure 6 16 Oylinder Valve and Gauge Pressure Regulator Nitrogen Cylinder Pressure Gauge 0 to 36 kg cm 0 to 400 psig Bleed Off Valve 1 4 inch Connection Figure 6 16 High Pressure Switch Testing d Set nitrogen pressure regulator at 26 4 kg cm 375 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 should open at a static pressure up to 25 kg cm 350 psig If a light is used light will go out If an ohmmeter is used the meter will indicate open circuit g Slowly open bleed off valve to decrease the pres sure The switch should close at 18 kg cm 250 psig T 285 6 10 CONDENSER COIL The condenser consists of a series of parallel copper tubes expanded into copper fins The condenser coil must be cleaned with fresh water or steam so the air flow is not restricted To replace the coil do the following WARNING Do not open the condenser
128. ed OFF If the temperature drops to 0 5 C 0 9 F below set point the heaters will be energized The heaters will de energize when the temperature rises to 0 2 0 4 F below the set point The compressor will not restart until the temperature rises to 0 2 C 0 4 F above the set point and three minutes have elapsed since the last compressor turn off 3 3 9 Perishable Mode Economy The economy mode is an extension of the conventional mode and is applicable to units with two speed evaporator fan motors The mode is activated when the setting of function code Cd34 is ON Economy mode is provided for power saving purposes Economy mode could be utilized in the transportation of temperature tolerant cargo or non respiration items which do not require high airflow for removing respiration heat There is no active display indicator that economy mode has been activated To check for economy mode perform a manual display of code Cd34 In order to achieve economy mode a perishable set point must be selected prior to activation When economy mode is active the evaporator fans will be controlled as follows At the start of each cooling or heating cycle the evaporator fans will be run in high speed for three minutes They will then be switched to low speed any time the supply air temperature is within 0 259 0 45 F of the set point and the return air temperature is less than or equal to the supply air temperature 3
129. ed by cycling the compressor on and off as the load demand requires The unit will operate in the conventional frozen mode when the controller set point is at or below the frozen range and function code CD34 is set to OFF If the return air temperature in the container drops 0 2 C 0 4 F below the set point the compressor is cycled off When the temperature is greater than 0 2 C 0 4 F above the set point and the three minute time delay has been met the compressor will restart The unit will always operate at full capacity and the suction modulation valve will open as allowed by current and pressure limiting NOTE On start up of the unit SMV will reset to aknown open position This is accomplished by assum ing the valve was fully open driving it fully closed resetting the percentage open to zero then opening to a known 21 staging position To prevent rapid cycling of the compressor a three minute compressor off time must be satisfied before the compressor will restart Under a condition of rapidly changing return air temperature the time delay may allow the return air temperature to rise slightly above set point temperature before the compressor can restart 3 3 14 Frozen Mode Economy In order to activate economy frozen mode operation a frozen set point temperature must be selected The economy mode is active when function code Cd34 is set to When economy mode frozen is active the system will perfor
130. ee item 11 Figure 6 6 This quantity is recommended to allow for return of any oil that may be in the refrigerant system Install compressor and check oil level after it is placed in operation Refer to paragraph 6 8 6 d Removing Oil from the Compressor 1 If the oil level is above one eighth sight glass must be removed from the compressor 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 removeremaining re frigerant Loosen the oil drain plug on the bottom plate of the compressor and drain the proper amount of oil from the compressor to obtain the correct level Backseat the suction and discharge service valves Repeat step a to ensure proper oil level T 285 6 9 HIGH PRESSURE SWITCH 6 9 1 Replacing High Pressure Switch a Turn unit start stop switch OFF Frontseat both suc tion and discharge service valves to isolate compres sor Remove the refrigerant from the compressor Disconnect wiring from defective switch The high pressure switch is located on the center head and is removed turning counterclockwise See Figure 2 3 Install a new high pressure switch after verifying switch settings Refer to paragraph 6 9 2 Evacuate dehydrate the compressor per graph 6 6 6 9 2 Checking High Pressure Switch WARNING Do not use a nitrogen cylinder without a pressure regulator Do not us
131. environmental connector EC Make sure that the wires terminate in accordance with the wire markings addresses h Attach a manifold gauge set refer to paragraph 6 3 If the unit is operating in the perishable mode proceed to step i f the unit t is operating in the frozen mode proceed to step j i Perishable operation If the operation of the unit is in question place the set point to approximately 6 11 F less than the current box temperature so the unit goes into pulldown Runthe unit for approximate ly one minute Record readings on gauges and cur rent draw The current draw and pressures should go up Place set point to 0 5 C 0 9 F above current box temperature to fully modulate valve and run for approximately one minute NOTE The unit may shut off for a short time Wait until the unit self starts and sufficient time has elapsed to cause the valve to fully modulate Record new gauge readings and current draw The suction pressure should go into a vacuum and the current draw should have gone down If little or no change to the suction pressure or current draw oc Curs this is an indication of a malfunctioning SMV j Frozen operation In frozen mode the valve will tend to stay open as much as possible Again this is de pendent upon current limit setting and control logic Turn the unit OFF and ON as inthe perishable mode and watch the gauges The valve will run at 2196 open if CREL logic is active and wil
132. es for the component Failure of this test will re sult in a pre trip failure or a control alarm indication 007 Main Power Voltage The main supply voltage is displayed Main Power Fre The value of the main power frequency is displayed in Hertz The frequency dis quency played will be halved if either fuse F1 or F2 is bad alarm code 121 Cd01 Ambient Tempera ture Compressor Suction TM C Temperature Compressor suction temperature sensor reading is displayed Compressor Dis 1 Cd11 charge Temperature Compressor discharge temperature sensor reading is displayed 12 Suction Compressor suction pressure transducer reading is displayed Cd13 Condenser Pressure Condenser pressure transducer reading is displayed Compressor Dis TE Cd14 Compressor discharge pressure transducer reading is displayed 15 on Valve Not used in this application Cd16 Compressor Motor Records total hours of compressor run time Total hours are recorded in incre Hour Meter ments of 10 hours i e 3000 hours is displayed as 300 Cd17 Relative Humidity Humidity sensor reading is displayed This code displays the relative humidity as 96 a percent value Cd18 Software Revision The software revision number is displayed This code checks the Controller DataCORDER battery pack While the test is run ning btest will flash on the right display followed by the result PASS will be displayed for battery voltages
133. es s qu E 3 1 3 1 TEMPERATURE CONTROL MICROPROCESSOR SYSTEM 3 1 Sled Key Pad ke Y RE Redux a eer Valea EP EROS 3 2 3 1 2 Display Module success tas cae how eas Se ee de ee Paw eee haw eas TUERI 3 2 3 135 COWON o eener ee UE Tan 3 3 3 2 50 ERE MEER Le 3 3 3 2 1 Configuration Software Configuration Vatiables Le eR oeque ur 3 3 3 2 2 Operational Software Function Codes 3 3 MODES OF OPERATION iT Lnd ERRORIS 3 3 3 3 1 Temperature Control Perishable Mode 3 4 3 3 2 Evaporator Fan Operation 3 4 3 3 3 Detrost Interval oen Re em ehem en dn A REDI RACE AR d A Un e een 3 4 984 Failure Actio sinan ee 3 4 3 3 5 Generator Protection 3 4 3 3 6 Condenser Pressure 2 3 4 3 8 7 rete ADR AD 3 4 3 3 8 Perishable Mode Conventional 3 4 3 3 9 Perishable Mode Economy
134. esive sealant Sikaflex 221 is included in Crack Repair Kit Carrier Transicold number 76 00724 006 see Table 6 3 Do not use an acetone based silicone 2 Which can be identified by a vinegar like odor a To make up the patch cut a piece of aluminum or stainless steel so that it will overlap the damaged area by at least 40 mm 1 1 2 on all sides 6 29 b Choose rivet locations and drill the rivet holes in the corresponding locations on the control box and patch piece c Apply the adhesive sealant around the damaged area to form a seal between the control box and the patch piece d Rivet the patch piece in place e File smooth any rough edges including rivets that may come into contact with wires 6 27 4 Inserts The threaded brass inserts that are molded into the control box will need to be replaced if the threads become stripped or if the insert becomes loose The inserts and epoxy are contained in repair kit Carrier Transicold part number 76 50084 00 see Table 6 4 There are 6 different inserts used in the control box Refer to Figure 6 35 for the locations of the various inserts NOTE An epoxy application gun is also needed Carri er Transicold part number 07 00391 00 The damaged insert must be removed from the control box Table 6 5 identifies the drill size and drill depth to be used for each insert A stop ring should be used on the drill bit to limit the depth a Center the dril
135. essure switch HPS fails to open within 15 minutes The discharge temperature exceeds 138 C 280 F The discharge temperature is less than or equal to ambient temperature plus 5 9 F The condenser pressure transducer CPT or discharge pressuretransduc er DPT pressure exceeds 27 42 kg cmo 390 psig Requirements Test 7 0 must pass for this test to execute Setup The con High Pressure denser fan is started and a 60 second timer is started Switch Open Pass Fail Criteria Passes the test if the high pressure switch HPS closes within the 60 second time limit otherwise it fails Setup If the container temperature is below 15 6 60 F the set point is changed to 15 6 C and a 60 minute timer is started The left display will read Perishable Mode P8 0 The control will then heat the container until 15 6 C is reached If the Heat Test container temperature is above 15 6 at the start of the test then the test pro ceeds immediately to test P8 1 and the left display will change to P8 1 Pass Fail Criteria The test fails if the 180 minute timer expires before the con trol temperature reaches set point The display will read P8 0 FAIL Requirements Control temperature must be at least 15 6 C 60 F Setup set point is changed to 0 C 32 F and 180 minute timer is started The left display will read P8 1 the right display will show the supply air Perishable Mode temperature The unit wil
136. esume normal temperature recording If using the Electronic Partlow Recorder CTD P N 12 00464 01 The recorder will STOP when the power is OFF and the pen tip will remain at the last recorded temperature on the chart When power is applied and the power off period is less than two days the recorder will retrieve the logged data from the DataCORDER for the power off period and record it onto the chart thereafter the recorder will resume normal temperature recording If the optional DataCORDER battery pack is being used and the charge is too low to enable recording during the power off period of less than two days the pen tip will move to below the inner chart ring for the period when NO data was recorded by the DataCORDER If the power has been OFF for more than two days the recorder will NOT re synchronize the chart will not advance to present time the pen tip will move to the currently recorded temperature and the recorder will resume normal temperature recording If using the Electronic Partlow Recorder CTD P N 12 00464 02 The recorder will STOP when the power is OFF and the pen tip will remain at the last recorded temperature on the chart When power is applied and the power off period is less than two days the pen tip will mark a spike to 25 C 77 F the recorder will retrieve the logged data from the DataCORDER for the power off period and record it onto the chart thereafter the recorder will resume normal tem
137. f operation include perishable chill mode and frozen mode Descriptions of the controller interaction and modes of operation are provided in the following sub paragraphs Perishable Mode With configuration variable CnF26 Heat Lockout Temperature set to 10 the perishable mode of operation is active with set points above 10 C 414 F With the variable set to 5 C the perishable mode 1 active below 5 23 F Refer to Table 3 4 When in the perishable mode the controller maintains the supply air temperature at set point the SUPPLY indicator light will be illuminated on the display module and the default reading on the display window will be the supply temperature sensor reading When the supply air temperature enters the in range temperature tolerance as selected at function code Cd30 the in range light will energize 3 3 1 Temperature Control 3 3 2 Evaporator Fan Operation Opening of an evaporator fan internal protector will shut down a unit with Normal Evaporator Fan Operation CnF32 set to 2EFO On units equipped with Single Evaporator Fan Capability CnF32 set to 1EFO additional relays are installed to allow the unit to continue to operate on a single fan Refer to Table 3 4 3 3 3 Defrost Interval Controller function code Cd27 sets two modes for defrost initiation either user selected timed intervals or automatic control The user selected values are 3 6 9 12 or 24 hours The factory defau
138. f the oil pump was not operating properly the entire oil pump amp bearing head assembly must be replaced Individual parts are not available If the pump requires inspection or cleaning dis assemble and reassemble by referring to Figure 6 10 Clean all parts and coat all moving parts with compressor oil before proceeding with reassembly Capscrews 7 O Ring Cover 8 Oil Pump amp Bearing Reversing Assembly 9 Set Screw Pinion 10 Relief Valve Gear 11 Pin Drive 12 Gasket Figure 6 10 Low Profile Oil Pump h Be very careful not to damage the motor windings when removing the motor end cover see Figure 6 11 as the cover fits over the winding coils Loosen the cap screws break the seal and then re move all capscrews except one in the top of the cover While holding the cover in place remove the remain ing capscrew Do not allow the cover to drop from its own weight To prevent striking the winding remove the cover horizontally and in line with the motor axis 1 Strainer Screws and 4 Motor End Cover Washers 5 Valve Gasket 2 Suction Strainer 6 Suction Service Valve 3 Motor End Cover 7 Valve Capscrew Gasket Figure 6 11 Motor End Cover Remove the refrigerant suction strainer If it is removed with ease it may be cleaned with solvent and replaced If the strainer is broken corroded or clogged with dirt that is not easily removed replace the strainer Install new gaskets upon reassembly Bloc
139. factory installed Configuration Software is achieved via a configuration card 3 2 2 Operational Software Function Codes The Operational Software is the actual operation programming of the controller which activates or deactivates components in accordance with current unit operation conditions and operator selected modes of operation The programming is divided into function codes Some of the codes are read only while the remaining codes may be user configured The value of the user configurable codes can be assigned in accordance with user desired mode of operation A list of the function codes is provided in Table 3 5 To access the function codes perform the following a Press the CODE SELECT key then press an arrow key until the left window displays the desired code number b The right window will display the value of this item for five seconds before returning to the normal display mode c If a longer time is desired press the ENTER key to extend the time to 30 seconds 3 8 MODES OF OPERATION The Operational Software responds to various inputs These inputs come from the temperature and pressure sensors the temperature set point the settings of the the configuration variables and the function code assignments The action taken by the Operational ON T 285 Software will change if one of the inputs changes Overall interaction of the inputs is described as a mode of operation The modes o
140. fan grille before turning power OFF and disconnecting power plug Using arefrigerant reclaim system remove the refrig erant charge b Remove the condenser coil guard Unsolder discharge line and remove the line to the receiver or water cooled condenser Remove coil mounting hardware and remove the coil Install replacement coil and solder connections Leak check the coil connections per paragraph para graph 6 5 Evacuate the unit per paragraph 6 6 then charge the unit with refrigerant per paragraph 6 7 6 11 CONDENSER FAN AND MOTOR ASSEMBLY WARNING Do not open condenser fan grille before turning power OFF and disconnecting power plug The condenser fan rotates counter clockwise viewed from front of unit pulls air through the the condenser coil and discharges horizontally through the front of the unit To replace motor assembly Open condenser fan screen guard b Loosen two square head set screws on fan Thread sealer has been applied to set screws at installation 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 Remove motor mounting hardware and replace the motor It is recommended that new locknuts be used when replacing motor Connect wiring per wiring dia gram Install fan loosely on motor shaft hub side in DO NOT USE FORCE If necessary tap the hub only not
141. fan motors will always start in high speed b Motor running in wrong direction after checking for correct wiring application c Motor will not start and IP EM s are not open 6 17 2 Removing The Capacitor WARNING Make sure power to the unit is OFF and power plug disconnected before removing capacitor s The capacitors are located on the motor and may be removed by two methods 1 If container is empty open upper rear panel of the unit The capacitor may be serviced after discon necting power plug If container is full turn the unit power OFF and dis connect power plug Remove the evaporator fan motor access panel See Figure 2 1 For removal ofthe evaporator fan assembly refer to section 6 16 WARNING With power OFF discharge the capacitor before disconnecting the circuit wiring 6 17 3 Checking The Capacitor If the capacitor is suspected of malfunction you may choose to simply replace it Direct replacement requires a capacitor of the same value Two methods for checking capacitor function are 1 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
142. g down to the rSLts code and pressing ENTER will allow the user to scroll through the results of the last pre trip testing run If no pre testing has been run or an individual test has not been run since the unit was powered up will be displayed To start a pre trip test do the following NOTE 1 Prior to starting tests verify that unit voltage Function Code Cd 07 is within tolerance and unit amperage draw Function Codes 04 Cd05 is within expected limits Otherwise tests may fail incorrectly 2 All alarms must be rectified and cleared before starting tests 3 Pre trip diagnosis may also be initiated via communications The operation is the same as for the key pad initiation described below except that should a test fail the pre trip mode will automatically terminate When initiated via communications a test may not be interrupted with an arrow key but the pre trip mode can be terminated with the PRE TRIP key a Press the PRE TRIP key This accesses a test selec tion menu TO RUN AN AUTOMATIC TEST Scroll through the selections by pressing the UP ARROW or DOWN ARROW keys to display AUTO AUTO 2 or AUTO 3 as desired and then press the ENTER key The unit will execute the series of tests without any need for direct user interface These tests vary in length depending on the component under test 2 While tests are running P will appear on the left display
143. ge pressure is 10 3 kg cm 146 4 psig Referring to Table 6 9 R 134a pressure temperature chart the 10 3 kg cm 146 4 psig value converts to 43 C 110 F 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 loosen ing the two flare nuts Install one quarter inch flare cap on water cooled condenser inlet tube replaces tubing flare nut De scale tubing if necessary What You Will Need 1 Oakite composition No 22 available as a powder in 68 kg 150 Ib and 136 kg 300 Ib containers 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 rub ber hose NOTE When Oakite compound No 32 is being used for the first time the local Oakite Technical Ser vice representative should be called in for their suggestions in planning the procedure They will advise the reader on 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 and de
144. greater than 7 0 volts FAIL will be displayed for Cd19 Battery Check battery voltages between 4 5 and 7 0 volts and will be displayed for battery voltages less than 4 5 volts After the result is displayed for four seconds ptest will again be displayed and the user may continue to scroll through the The ambient sensor reading is displayed Q e various codes This code indicates the dash number of the model for which the Controller is Cd20 Config Model figured i e if the unit is a 69 40 489 100 the display will show 89100 Humidity Water This code displays the status of the humidity water pump forward re Cd21 Pump Atomizer verse or off If not configured the mode is permanently deactivated and will dis Status 2 3 13 T 285 Table 3 5 Controller Function Codes Sheet 2 of 4 Cd22 Compressor Speed status of the compressor is displayed high low or off Cd23 Displays the current evaporator fan state high low or off Controlled m ET Cd24 Atmosphere State Not used in this application Compressor Run This code displays the time remaining until the unit goes into defrost in tenths of Cd25 Time Remaining Un an hour This value is based on the actual accumulated compressor running til Defrost time Defrost Temperature T Cd26 Sensor Reading Defrost temperature sensor reading is displayed Configurable Functions NOTE
145. gv WHT En BLU 12 22 L2 z 3 RED 3 1 RED H R ng 3 L3 83 Hern 5 L E enl IL gt 3 cs 1 5 l 1 1l 2 N 43H 2 TBU DVR 3h PFC TRANS AUTO 1 AB CI 12 c B ejs i 31 4 to 60 gt 391 0 70 POs 6 Heater 5 ac FED DHTL DHMR 100 pL DHML DHBR cH ae kz V gt 7al SS ct Dx DHBL DHTR 5 5 A gt IOS gt lt lt gt TH B8 B9 KB9 ECF2 ue ECF1 t 1 7 2 F3 3 c ao 5 4 ast 2t 2 a a a 5 8 oz 1 11 19 3 5 9 n e Lois i 1 4 L3 Ira m 1 TN cFS gt oq 0 2 919 lt Ky o o i8 ECG2 1 P P2 ECH2 2 1 A1 A2 EF cc ES T3 1 1 2 1 2 2 56 PLN 0 lt 12 1 11 2 lt 2 1 2 2 lt 2 ret EM2B 2 KAS A2 La Ira ES EF se 2 ri 11 M2 25 KA4 L T4 42 T yoo EF a ks ECD3 8 10 HR o 9 L3 9 lt gt 2 13 il 31 32 TF T RM 7 RM DL c Oo 7 587 FDH HST HHT DHH lt gt 99 AWWW TS a S
146. h temperature shown by the thermometer Allow sufficient time to ensure bulb has cooled to the ice bath temperature If the two readings do not agree within 0 3 1 2 F the recording thermometer should be rezeroed Do not touch stylus during the checkout procedure If adjustment is required loosen setscrew cross recessed head Using 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 Rotate the adjustment screw counterclockwise to set the stylus about 0 5 C 0 9 F higher than set T 285 temperature the chart by hand The b Remove nut and bushing item 18 Figure 6 33 indicated temperature should be 0 C 32 F c Install replacement probe and bushing Seal with 6 25 3 Replacing Sensor Probe silicone before securing to case a Remove box from unit d Install box into unit 1 Thermistor Sensor 1
147. harge may be drawn into the system from a refrigerant con tainer on weight scales Continue to paragraph 6 7 6 6 4 Procedure Partial System a If the refrigerant charge has been removed from the compressor for service evacuate only the compres sor by connecting the evacuation set up at the com pressor service valves Follow evacuation proce dures of the preceding paragraph except leave compressor service valves frontseated until evacua tion Is completed If refrigerant charge has been removed from the low side only evacuate the low side by connecting the evacuation set up at the compressor service valves and liquid service valve except leave the service valves frontseated until evacuation is completed Once evacuation has been completed and the pump has been isolated fully backseatthe service valves to isolate the service connections and then continue with checking and if required adding refrigerant in accordance with normal procedures T 285 6 7 REFRIGERANT CHARGE 6 7 4 Checking the Refrigerant Charge a To avoid damage to the earth s ozone layer use arefrigerant recovery system whenever remov ing refrigerant When working with refrigerants you must comply with all local government envi ronmental laws In the U S A referto EPA sec tion 608 Connect the gauge manifold to the compressor dis charge and suction service valves For units operat ing on a water cooled con
148. he suction gas power head assembly and wrapped with insulating Determine the average superheat It should be 4 5 to compound 6 7 C 8 to 12 F 6 14 2 Hermetic Valve Replacement a Removing the Expansion Valve NOTES 1 The TXV is a hermetic valve and does not have adjustable superheat 2 All connections on the hermetic TXV are bi metallic copper on the inside and 1 Suction Line 3 Nut and Bolt stainless on the outside 2 TXV Bulb Clam 4 TXV Bulb 3 All joints on the hermetic inlet outlet Figure 6 19 Thermostatic Expansion Valve Bulb and equalizer lines are brazed 6 14 1 Checking Superheat 4 Bi metallic connections heat up very quickly NOTE Proper superheat measurement should be completed at 18 C 0 F container box tem perature where possible a Open the heater access panel see Figure 2 1 to ex pose the expansion valve b Attach a temperature sensor near the expansion valve bulb and insulate Make sure the suction line is clean and that firm contact is made with the sensor c Connect an accurate gauge to the service port direct ly upstream of the suction modulating valve d Set the temperature set pointto 18 C 0 F and run Hermetic Thermostatic Expansion Valve unit until conditions stabilize Non adjustable Superheat Stem Equalizer Connection Inlet Connection Outlet Connection Hermetic Expansion Valve Bulb The readings may cycle from high to
149. hes 0 32 as shown by a laboratory thermometer When the ice bath temperature reaches 0 32 F as shown by the laboratory thermometer reading compare the temperature indicated by stylus with temperature shown by the thermometer Allow sufficient time to ensure bulb has cooled to the ice bath temperature If the two readings do not agree within 0 3 1 2 F the recording thermometer should be rezeroed c Rezeroing the Temperature Recorder 1 Becertain that the element sensing bulb tempera ture has stabilized at 0 C 32 F Note the amount of temperature difference between the test meter or thermometer reading and the stylus indicated tem perature 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 1 2 F in variation carefully note the number of degrees Loosen set screw item 6 Figure 6 32 and zero thermometer by turning pinion shaft item 7 Length ening pinion shaft counterclockwise raises stylus indicated temperature reading shortening shaft T 285 6 26 clockwise lowers stylus reading Then retighten set Screw Reset control at 0 32 F start the refrigeration unit and repeat accuracy check After temperature stabilization temperature recorder should be within 0 3 1 2 F limits Replacing Temperature Recorder Element Bulb an
150. ia Passes if change in current draw is within the range speci fied Fails if AL11 or AL12 activates during test Setup The High Speed Evaporator Fan is turned on and run for eight minutes with all other outputs de energized Pass Fail Criteria A temperature comparison is made between the return and supply probes Supply Return Probe Test NOTE If this test fails P5 0 and FAIL will be displayed If both Probe tests this test and the PRIMARY SECONDARY pass the display will read P5 PASS T 285 3 20 Table 3 7 Controller Test Codes Sheet 2 of 4 Supply Probe Test Return Probe Test Requirements For units equipped with secondary supply probe only Pass Fail Criteria The temperature difference between primary and secondary probe supply is compared NOTE If this test fails P5 1 and FAIL will be displayed If both Probe tests this and the SUPPLY RETURN TEST pass because of the multiple tests the display will read P 5 PASS Requirements For units equipped with secondary return probe only Pass Fail Criteria The temperature difference between primary and secondary probe return is compared NOTES 1 Ifthis test fails P5 2 and FAIL will be displayed If both Probe tests this test and the SUPPLY RETURN pass because of the multiple tests the display will read P 5 PASS The results of Pre Trip tests 5 0 5 1 and 5 2 will be used to activate or clear control probe alarms
151. ice using the manifold gage hose set do the following a Preparing Manifold Gauge Hose Set For Use 1 If the manifold gauge hose set is new or was exposed to the atmosphere it will need to be eva cuated to remove contaminants and air as follows 2 Back seat turn counterclockwise both field service couplings see Figure 6 3 and midseat both hand valves 3 Connect the yellow hose to a vacuum pump and re frigerant 134a cylinder 4 Evacuate to 10 inches of vacuum and then charge with R 134a to a slightly positive pressure of 0 1 kg cm 1 0 psig T 285 5 Front seat both manifold gauge set valves dis connect from cylinder The gauge set is now ready for use To Low Side To High Side Service Port Service Port 6 Blue Knob 1 2 3 4 5 6 Red Knob Manifold Gauge Set Hose Fitting 0 5 16 Acme Refrigeration and or Evacuation Hose SAE J2196 R 134a Hose Fitting w O ring M14 x 1 5 High Side Field Service Coupling Low Side Field Service Coupling Figure 6 3 R 134a Manifold Gauge Hose Set b Connecting Manifold Gauge Hose Set Connection of the manifold gauge hose set see Figure 6 4 is dependent on the component being serviced If only the compressor is being serviced the high side coupling is connected to the discharge service valve For service of the low side after pump down the high side coupling is connected to the liquid line service valve The center hose connection
152. icold DataCORDER software is integrated into the controller and serves to eliminate the temperature recorder paper chart DataCORDER functions may be accessed by key pad selections and viewed on the display module The unit is also fitted with interrogation connections which may be used with the Carrier Transicold Data Reader to down load data A personal computer with Carrier Transicold Data View software may also be used to download data and configure settings The DataCORDER consists of Configuration Software Operational Software Data Storage Memory Real Time Clock with internal battery backup Six thermistor inputs Interrogation Connections Power supply battery pack 3 7 The DataCORDER performs the following functions a Logs data at 15 30 60 or 120 minute intervals and stores two years of data based on one hour interval b Records and displays alarms on the display module c Records results of pre trip testing d Records DataCORDER and temperature control software generated data and events as follows Container ID Change Software Upgrades Alarm Activity Battery Low Battery Pack Data Retrieval Defrost Start and End Dehumidification Start and End Power Loss w wo battery pack Power Up w wo battery pack Remote Probe Temperatures in the Container USDA Cold treatment and Cargo probe recording Return Air Temperature Set Point Change Supply Air Temperature Real Time Clock B
153. in the container CAUTION When Pre Trip key is pressed dehumidification and bulb mode will be deactivated At the comple tion of Pre Trip activity dehumidification and bulb mode must be reactivated CAUTION When condenser water flow is below 11 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 CAUTION When a failure occurs during automatic testing the unit will suspend operation awaiting operator intervention CAUTION When Pre Trip test Auto 2 runs to completion without being interrupted the unit will terminate pre trip and display Auto 2 end Theunit will suspend operation until the user depresses the ENTER key CAUTION The unit will remain in the full cooling mode as long as the emergency bypass switch is in the BY PASS position If the cargo may be damaged by low temperatures the operator must monitor con tainer temperature and manually cycle operation as required to maintain temperature within required limits CAUTION The unit will remain in the DEFROST mode as long as the emergency defrost switch is in the DE FROST position To prevent cargo damage the operator must monitor container temperature and manually cycle operation as required to maintain temperature within required limits CAUTION To prevent trapping liquid refrigerant in the manifold gauge set be sure set is brought to suction pressure before disconnecting CAUTION
154. internal protector in line Provide power to the condenser fan motor contactor with the water pressure switch and condenser motor internal protector in line c Provide power to the evaporator fan motor high speed contactors with the evaporator fan motor inter nal protectors in line d Provide power to the bypass module item15 Figure 2 3 The bypass module supplies power to the stepper motor drive to bring the valve to the full open position CAUTION Theunit will remain in the full cooling mode as long as the emergency bypass switch is in the BYPASS position If the cargo may be damaged by low temperatures the operator must monitor container temperature and manually cycle operation as required to maintain temperature within required lim its Toreturn the unitto normal operation place the switch in the NORMAL OPERATION position When emergency oparation is no longer required re install the wire tie at the switch mounting 4 11 2 Emergency Defrost Operation To place the unit in the emergency defrost mode of operation cut the wire tie installed at the switch mounting see Figure 2 6 and place the switch in the EMERGENCY DEFROST position NOTE 1 If the unit is in the emergency bypass cooling mode the emergency defrost Switch will override this mode and place the unit in defrost The IN RANGE LIGHT is de energized when in the emergency defrost mode The switch is a normally open four pole switch which
155. ion Defective wiring Loose terminal connections Low line voltage 5 5 UNIT WILL NOT TERMINATE HEATING Controller improperly set Controller malfunction Heater termination thermostat remains closed along with the heat relay 5 6 UNIT WILL NOT DEFROST PROPERLY Defrost timer malfunction Cd27 Table 3 5 Loose terminal connections Tighten Will not initiate defrost Defective wiring automatically Defrost temperature sensor defective or heat termination Replace thermostat open P Heater contactor or coil defective Will not initiate defrost Manual defrost switch defective manually Defrost temperature sensor open 4 10 4 initiates but relay DR drops Low line Voltage itatea bard Heater contactor or coil defective Replace nitiates but does not defros Heater s burned out Tighten N Unit fails to stop heating o 285 5 2 REMEDY CONDITION POSSIBLE CAUSE REFERENCE SECTION 5 6 UNIT WILL NOT DEFROST PROPERLY Continued Frequent defrost Wet load Normal Will not terminate defrost Unit in Emergency Defrost mode 4 11 2 5 7 ABNORMAL PRESSURES COOLING 3T MUERE pido Excessive frost on evaporator coil quum sures tend to equalize when unit Compressor valves defective Is operating Compressor cycling stopped 5 8 ABNORMAL NOISE OR VIBRATIONS Loose mounting bolts Tighten Wom bearings Compressor Worn or broken valves 68 Condenser or Evaporator
156. is placed over the center hub and the chart edges are behind the four hold down tabs item 9 e Mark today s date container number and other required information on the new chart and install under hold down tabs f Replace the chart nut loosely rotate the chart until the correct day is aligned with the start arrow and hand tighten the chart nut CAUTION Do not allow the recorder stylus to snap back down The stylus arm base is spring loaded and damage may occur to the chart or the stylus force may be altered g Gently lower the stylus arm until the pen tip item 4 comes in contact with the chart T 285 1 Recorder Door 2 Change Chart Button 3 Recorder Box 4 PenTip 5 Stylus Arm Connector Calibration Button Located underneath Mounting Screws 10 24 x 7 16 inches long Hold Down Tab Chart Retaining Nut 1 COOND Figure 6 31 Electronic Partlow Temperature Recorder 6 23 3 Adjusting the Recorder Stylus Proper stylus force upon the chart paper is important Factory adjustment is 113 to 127 grams 4 to 4 5 ounces To measure the force use a spring type gage and attach it under the stylus as close as possible to the pen tip item 4 Exert pull on the gage perpendicular to the chart surface The measured force should be noted just as the pen tip leaves the surface NOTE The two coil springs near the base of the stylus are NOT involved in establishing chart contact force They serve on
157. is the alarms number in the queue The right display will show AA if the alarm is active where is the alarm number IA will show if the alarm is inactive END is displayed to indicate the end of the alarm list if any alarms are active CLEAr is displayed if all the alarms in the list are inactive If no alarms are active the Alarm Queue may be cleared The exception to this rule is the DataCORD ER Alarm Queue Full alarm AL91 which does not have to be inactive in order to clear the alarm list To Clear the Alarm List Press the ALT MODE amp ALARM LIST keys Press the UP DOWN ARROW key until CLEAr is displayed Press the ENTER key The alarm list will clear and will be displayed Press the ALARM LIST key AL will show on the left display and on the right display when there are no alarms in the list Upon clearing of the Alarm Queue the Alarm light will be turned off Sensor 3 gt 285 Table 3 4 Controller Configuration Variables CONFIGURATION NUMBER TITLE DEFAULT OPTION Bypass Valve Enable a ros CnF08 Single Phase T hree Phase Motor 3Ph CnF11 Defrost Selection Out cra Condenser Pressure Out 52 1 SAV Out bemamdDesi in Timed Deiros Deae Note
158. ise Counterclockwise 1 Suction Discharge or 3 Stem Cap Liquid Line 4 Valve stem Connection 5 Compressor Or Filter 2 Service Port Drier Inlet Connection Figure 6 1 Service Valve 6 1 DISCHARGE PRESSURE SUCTION PRESSURE OPENED Backseated HAND VALVE CLOSED Frontseated HAND VALVE A CONNECTION TO LOW SIDE OF SYSTEM B CONNECTION TO EITHER REFRIGERANT CYLINDER OR OIL CONTAINER C CONNECTION TO HIGH SIDE OF SYSTEM Figure 6 2 Manifold Gauge Set 6 3 MANIFOLD GAUGE SET The manifold gauge set see Figure 6 2 is used to determine system operating pressure add refrigerant charge and to equalize or evacuate the system When the suction pressure hand valve is frontseated turned all the way in the suction low pressure can be checked When the discharge pressure hand valve is frontseated the discharge high pressure can be checked When both valves are open turned counter clockwise all the way out high pressure vapor will flow into the low side When the suction pressure valve open and the discharge pressure valve shut the system can be charged Oil can also be added to the system A R 134a manifold gauge hose set with self sealing hoses see Figure 6 3 is required for service of the models covered within this manual The manifold gauge hose set is available from Carrier Transicold Carrier Transicold P N 07 00294 00 which includes items 1 through 6 Figure 6 3 To perform serv
159. it will heat only when in the Perishable Mode relay TH is electronically locked out when in the Frozen Mode a If the air temperature decreases 0 5 0 9 F below set point the system enters the heating mode See Figure 4 3 The controller closes contacts TH see Figure 4 6 to allow power flow through the heat ter mination thermostat HTT to energize the heaters HR The HEAT light is also illuminated The evapo rator fans continue to run to circulate air throughout the container b When the temperature rises to 0 2 C 0 4 F below set point contact TH opens to de energize the heat ers The HEAT light is also de energized The evapo rator fans continue to run to circulate air throughout the container C A safety heater termination thermostat HTT at tached to an evaporator coil support will open the heating circuit if overheating occurs ENERGIZED DE ENERGIZED FOR FULL DIAGRAM AND LEGEND SEE SECTION 7 POWER TO CONTROLLER CONTROL TRANSFORMER SIGNAL TO CONTROLLER 1 1 2 Figure 4 6 Perishable Mode Heating 4 10 3 Sequence Of operation Frozen Mode Cooling NOTES 1 In the Frozen Mode of operation the evaporator motors run in low speed 2 low temperature ambients the condenser fan will be cycled by the controller to maintain proper condensing pressure a With supply air temperature above set point and de creasing the unit will be cooling with the condenser f
160. k the compressor crankshaft so that it cannot turn Use a screwdriver to bend back the tabs on the lockwasher and remove the equalizer tube and lock Screw assembly See Figure 6 12 The slingers at the end of the tube draw vapor from the crankcase Remove the rotor using a jack bolt Insert a brass plug into the rotor hole to prevent damage to the end ofthe crankshaft Ifthe piston rings extend beyond the cylinder tops the pistons can be pulled through the bottom plate open ing after the piston rings are compressed A piston ring compresser will facilitate removal Each piston pin is locked in place by lock rings which are snapped into grooves in the piston wall See Figure 6 13 Since the stator cannot be replaced in the field the terminal plate assembly need not be disturbed unless a leak exists and the plate assembly needs to be re placed If no terminal plate repair is required proceed with reassembly T 285 1 Equalizer Tube Lock Screw Assembly 2 Lockwasher 3 Counterweight Motor End Figure 6 12 Equalizing Tube and Lock Screw Assembly 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 6 13 Crankshaft Assembly 6 8 3 Compressor Reassembly Clean all compressor parts use a suitable solvent with proper precautions Coat all moving parts with the proper compressor oil before assembly Refer to Table
161. k the rings Place rods so that the chamfered side will be against radius of crankpins Install the crankshaft and thrust washer through the pump end of the compressor En sure thrust washer is fitted on locating pin Do not damage main bearings Bring rods in position against crank bearings b Install the pump end thrust washer on the two dowel pins located on the bearing head See Figure 6 9 CAUTION Ensure that thrust washer does not fall off dowel pins while installing oil pump CAUTION The set screw on the crankshaft must be removed for this type of oil pump See Figure 6 9 c Install the bearing head assembly with a new gasket on the compressor crankshaft Carefully push oil pump on by hand ensuring that the thrust washer re mains on the dowel pins The tang on the end of the drive 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 and should be oriented with the oil pick up tube and oil inlet port aligned as shown in Figure 6 9 d Align the gasket and install the eight capscrews in the mounting flange Refer to Table 6 8 for applicable torque values Install matching connecting rod caps Be sure rod is not bound and crankshaft will turn correctly as each set of rod bolts is torqued key fits properly when installng rotor on shaft Screw on equalizer tube and lock screw asse
162. l Charge Oil Sight Glass Verify at 18 C 0 F container box temperature Opens Closes Cutout Cut In Unit Configuration Water Cooled Condenser Receiver NOTE 2 row 3 row condenser condenser 4 5 kg 4 9 kg 9 0 Ibs 10 75 16 11 5 Ibs g 3 7 kg 4 0k 8 3 165 8 8 165 060 4 Weight Dry 118 kg 260 Ib Approved Oil Mobil ST32 3 6 liters 7 6 U S pints The oil level range with the compressor off should be between the bottom and one eighth level of the sight glass 4 5 to 6 7 8 to 12 F 3 130 5 F 38 4 100 7 F 25 1 0 kg cm 350 10 psig 18 0 7 kg cm2 250 10 psig Charge Requirements 134 4 row condenser 5 2 kg 4 9 kg 10 8 Ibs When replacing the following components f g and h refer to the installation instructions included with the replacement part for additional information f Fusible Plug Melting point 99 210 F Torque 6 2 to 6 9 mkg 45 to 50 ft Ibs g Sight Glass Moisture Indicator 8 9 to 9 7 mkg 65 to 70 ft Ibs 35 5 kg cm 500 5 psig h Rupture Disc Torque P N 14 00215 03 1 4 to 2 10 to 15 ft lbs The condenser fan will start if the condenser pressure is greater than 14 06 kg cm 200 psig OR the condenser fan is OFF for more than 60 seconds The condenser fan will stop if the condenser pressure is less than 9 14 kg cm 1
163. l bit on the insert and drill to the pre scribed depth b Remove the chips from the drilled hole c Mix the two component epoxy and fill the hole 1 2 way to the top with epoxy d Press the insert in until it is flush with the surface e Wipe away any excess epoxy The part is ready for service after the bond material has hardened and is tack free approximately 20 minutes 6 27 5 Door Hinge Inserts If the door hinges have been pulled from the control box drill and reinstall the hinge as shown in Figure 6 34 and described in the following steps Figure 6 34 Door Hinge Repair T 285 Materials needed Drill a 1 4 hole in the center of each square backing plate 1 Cuttwo square pieces of 3 mm thick 1 8 inch alumi b Pass the bolts through the bolts holes in the door num or stainless steel approximately 40 mm 1 5 8 hinge then through the control box at the location square These squares will serve as backing plates where the hinge insert pulled out c From inside the control box slide the backing plates 2 Two nuts bolts 10 24 x 1 and washers for each over the bolts and secure in place with the washers insert that needs repair and nuts Table 6 3 Crack Chip amp Hole Repair Kit ITEM DESCRIPTION PART NUMBER Table 6 4 Insert Repair Kit Note Insert repair procedures require use of an Application Gun Carrier number 07 00391 00 Loctite 983435
164. l open to maximum al lowable after this Dependent on ambient conditions there should be an increase in suction pressure and current draw as the valve opens however this may be difficult at times to fully determine Ifthe unit still does not operate properly stop unit and proceed to the following step to check out the SMV system 6 18 2 Checking The Stepper valve a Checking with ohmmeter Disconnect the four pin connector to the stepper SMV With a reliable digital ohmmeter check the winding resistance In normal ambient the valve should have 72 to 84 ohms measured on the red green a b terminals andonthe white black c d terminals leads If an infinite or zero reading occurs check connections and replace the motor If near normal or normal reading occurs proceed to step 6 18 4 to check out the controller b Checking with SMA 12 portable stepper drive tester The SMA 12 portable stepper drive tester Carrier Transicold P N 07 00375 00 is a battery operated stepper drive which will open and close the SMV which allows a more thorough check of the motor 6 17 To check operation 1 Stopthe unit disconnect the four pin connector from the stepper module to the valve see Figure 6 24 and attach the SMA 12 stepper drive to the connec tor going to the valve 2 Setthe SMA 12 pulse per second PPS to one PPS and either open or close valve Each LED should light sequentially until all four are lit Any LED failing
165. l then start to pull down the temperature to the 0 set Pull Down Test point Pass Fail Criteria The test passes if the container temperature reaches set point before the 180 minute timer expires T 285 3 22 Table 3 7 Controller Test Codes Sheet 4 of 4 Perishable Mode Maintain Tempera ture Test Defrost Test Frozen Mode Setup Test Frozen Mode Pull Down Test Frozen Mode Main tain Temperature Test Requirements Test P8 1 must pass for this test to execute Setup The left display will read 8 2 and the right display will show the supply air temperature A 60 minute timer is started The unit will be required to main tain the 0 C temperature to within or 0 5 C 0 9 F of set point until Data CORDER recording is executed The recorder supply probe temperature running total and its associated readings counter will be zeroed out for the remainder of the recording period at the start of this test so that the actual value recorded in the DataCORDER will be an average of only this test s results Once a recording interval is complete the average recorder supply temperature will be recorded in DataCORDER as well as stored in memory for use applying the test pass ail criteria Pass Fail Criteria If the recorded temperature is within 0 5 C of set point from test start to DataCORDER recording the test passes If the average tem perature is outside of the tolerance ra
166. lays the pre trip selection menu Discontinues pre trip in progress Displays alarm list and clears the Manual Displays selected defrost mode De Defrost pressing and holding the Defrost in Interval terval key for five 5 seconds will ini tiate defrost using the same logic as if the optional manual defrost switch was toggled on The Manual Defrost function can also be selected by simultaneously press ing and holding the Pre Trip and Alt Mode buttons Enter Confirms a selection or saves a selection to the controller Change or scroll a selection upward Pre trip advance or test interruption Change or scroll a selection down ward Pre trip repeat backward Return Displays non controlling probe tem Supply perature momentary display Displays alternate English Metric scale momentary display When set to F pressure is displayed in psig Figure 3 2 Key Pad and vacuum in hg P appears after the value to indicate psig and i ap pears for inches of mercury When set to pressure readings are in bars b appears after the val ue to indicate bars Batter Initiate battery backup mode to allow Bower set point and function code selection if AC power is not connected COOL HEAT DEFROSTIN RANGEALARM SUPPLY RETURN SETPOINT Code AIR TEMPERATURE Data This key is pressed to switch the functions from the temperature soft ware to the DataCORDE
167. lder the two coil connections one at the distribu tor and the other at the coil header 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 paragraph 6 5 Evacuate the unit per paragraph 6 6 and add refrigerant charge per paragraph 6 7 6 15 2 Evaporator Heater Replacement a Before servicing unit make sure the unit circuit break ers CB 1 amp CB 2 and the start stop switch ST are inthe OFF position and thatthe power plug and cable are disconnected b Remove the lower access panel Figure 2 1 by removing the 1 locking device lockwire and mounting screws c Determine which heater s need replacing by check ing resistance on each heater Referto paragraph 2 3 for heater resistance values d Remove hold down clamp securing heaters to coil e Lift the bent end of the heater with the opposite end down and away from coil Move heater to the side enough to clear the heater end support and remove 6 16 EVAPORATOR FAN AND MOTOR ASSEMBLY The evaporator fans circulate air throughout the container by pulling air in the top of the unit The air is forced through the evaporator coil where it is either heated or cooled and then discharged out the bottom of the refrigeration unit into the container The fan motor bearings are factory lubricated and do not require additional grease 6 16
168. les 3 12 Table 3 5 Controller Function Codes 2 3 13 Table 3 6 Controller Alarm Indications 3 17 Table 3 7 Controller Pre Trip Test Codes 3 20 Table 3 8 DataCORDER Function Code Assignments 3 24 Table 3 9 DataCORDER Pre Trip Result Records 3 25 Table 3 10 DataCORDER Alarm Indications 3 26 Table 6 1 Sensor Temperature Resistance Chart 6 21 Table 6 2 Temperature Resistance Chart 6 25 Table 6 3 Crack Chip amp Hole Repair Kit mr 6 30 Table 6 4 Insert Lue PME Hye RUTAS 6 30 Table 6 5 Drill Information 6 30 Table 6 6 Recommended Bolt Torque Values 1 6 32 Table 6 7 Wear Limits For Compressors 6 34 Table 6 8 Compressor Torque Values 6 34 Table
169. les These options are variations of the compressor section front cover 1 3 22 Upper Air Fresh Air Make Up The unit may be fitted with an upper fresh air makeup assembly The fresh air makeup assembly is available with a Vent Positioning Sensor VPS and may also be fitted with screens 1 3 23 Lower Air Fresh Air Make Up The unit may be fitted with a lower fresh air makeup assembly These assemblies are supplied in two designs the standard design and the macro design The openings may also be fitted with screens 1 3 24 Controlled Atmosphere The units may be fitted with the TransFresh option For information on the TransFresh system contact TransFresh Corporation P O Box 1788 Salinas CA 93902 1 3 25 Arctic Mode To improve operation in cold ambients the unit may be fitted with a crankcase heater and or a condensate drain line heater The crankcase heater is operated before start up to warm the compressor oil and boil off any liquid refrigerant that may be present in the crankcase The drain line heater is operated to prevent freezing of the evaporator condensate drain system 1 3 26 Humidification The unit may be equipped with the Carrier Transicold NatureFresh humidity management system The system includes a water tank water pump water heater and atomizer along with various control and monitoring devices It is designed to add additional moisture into the supply air for control of cargo moisture level A sepa
170. ll be used for control NOTE The P5 Pre Trip test must be run to inactivate the alarm This alarm activates to indicate the DataCORDER has a software failure To clear this alarm reconfigure the unit to the current model number This failure may be the result of a voltage dip in excess of 2596 Alarm 56 is activated by an invalid primary return temperature sensor reading that is outside the range of 50 to 70 58 F to 158 If Alarm 56 is acti vated and the primary return is the control sensor the secondary return sensor will be used for control if the unit is so equipped If the unit is not equipped with a secondary return temperature sensor or it fails the primary supply sensor will be used for control NOTE The P5 Pre Trip test must be run to inactivate the alarm Alarm 57 is triggered by an ambient temperature reading outside the valid range from 50 C 58 F to 70 C 158 F Alarm 58 is triggered when the compressor high discharge pressure safety switch remains open for at least one minute This alarm will remain active until the pres sure switch resets at which time the compressor will restart 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 thermo stat resets Alarm 60 is an indication of a probable failure of the defrost temperature sensor DTS It is triggered by the opening of the heat termi
171. lose to allow the user to inspect its operation If CAL is selected the controller will zero calibrate the 2 sensor input If the unit is not configured with AutoFresh the CD43 will display Code Cd44 will display CO2 and O2 concentrations and limits If the unit is not Cd44 AutoFresh Values configured for AutoFresh or a CO2 sensor is not installed CD44 will dis Cd38 Cd39 Code Cd45 will display whenever the control detects movement via the sensor 45 Vent Position Sensor unless alarm 50 is active The code will display for 30 seconds then time out and return to the normal display mode If the Temperature unit is F the VPS units will be CFM and in C the VPS units shall be CMH S Cd47 Variable Economy The variable temperature C or F setting is used with economy mode Func Temperature Setting tion code is when unit is not configured for economy mode Cd48 Hae eden Code CD48 is used to determine limits between 6096 9596 for dehumidification Parameter Selection and or bulb mode CNF28 when active Days Since Last Code CD49 will display the number of days since the last successful Auto1 Cd49 Successful Pre Trip Auto2 or Auto3 pre trip sequence T 285 3 16 Figure 3 1Table 3 6 Controller Alarm Indications Sheet 1 of 3 TITLE DESCRIPTION tor Motor 1 Alarm 11 is applicable to units with Single Evaporator Fan Capability CnF
172. lt for the timed interval is 12 hours All defrost interval times reflect the number of compressor runtime hours since the last defrost de ice cycle The minimum defrost interval under the automatic setting is 3 hours while the maximum is 24 Refer to Table 3 5 Defrost interval time is not accumulated in any mode until the defrost termination sensor reads less than 10 C 50 F When the unit is set to automatic control and in perishable mode perishable pulldown mode frozen pulldown mode defrost starts with an initial defrost set to 3 hours and then adjusts the interval to the next defrost based on the accumulation of ice on the evaporator coil In this way defrosts are scheduled to occur only when necessary Once setpoint has been reached in frozen operation the automatic control selection will set the time interval to 12 hours for the first two defrosts once the return probe is reading below the frozen setpoint and then adjust to 24 hours thereafter 3 3 4 Failure Action Function code Cd29 may be operator set to allow continued operation in the event the control sensors are reading out of range The factory default is full system shutdown Refer to Table 3 5 3 3 5 Generator Protection Function codes Cd31 and Cd32 may be operator set to control start up sequence of multiple units and operating T 285 current draw The factory default allows on demand starting of units and full current draw Refer to Table 3 5
173. ly to hold the stylus in its retracted position Correct adjustment is made by carefully bending the portion of the stylus arm between the bend near the pen tip and the first bend towards the stylus arm base If the force is too low the stylus trace will be light and difficult to read If the force is too great wrinkling or tearing of the paper chart may occur T 285 6 23 4Rezeroing the Recording Thermometer For Electronic Partlow Recorder CTD P N 12 00464 00 NOTE Use chart CTD P N 09 00128 00 F P N 09 00128 01 C a Press the Calibration button item 7 Figure 6 31 on the bottom of the recorder The pen tip will drive fully down scale then move upscale to the chart ring at 29 C 20 F and stop b Ifthe tip of the pen item 4 is on the 29 C 20 F chart ring the recorder is in calibration proceed to step c If the tip of the pen is NOT on the 29 C 20 F chart ring the operator must loosen the two screws on the bottom of the stylus arm to adjust the pen tip manually to the 29 C 20 F chart ring Tighten the screws when adjustment is complete c Press the calibration button and the pen will position itself to the correct temperature reading For Electronic Partlow Recorder CTD P N 12 00464 01 NOTE Use chart CTD P N 09 00128 00 F P N 09 00128 01 C a Press the Calibration button item 7 Figure 6 31 on the bottom of the recorder The pen tip will drive fully
174. m normal frozen mode operations except that the entire refrigeration system excluding the controller will be turned off when the control temperature is less than or equal to the set point 2 C After an off cycle period of 60 minutes the unit will turn on high speed evaporator fans for three minutes and then check the control temperature If the control temperature is greater than or equal to the set point 0 2 C the unit will restart the refrigeration system and continue to cool until the previously mentioned off cycle temperature criteria are met If the control temperature is less than the set point 0 2 C the unit will turn off the evaporator fans and restart another 60 minute off cycle T 285 3 4 CONTROLLER ALARMS Alarm display is an independent controller software function If an operating parameter is outside of expected range or a components does not return the correct signals back to the controller an alarm is generated A listing of the alarms is provided in Table 3 6 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 ofthe cargo Rechecks are made to confirm that 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 alarm code LO low main voltage when a voltage drop of over 2596 o
175. m should immediately go inactive check the 4 minute stability requirement If the alarm reoccurs after the four minutes and the panel was known to have been stable then the panel should be replaced If the alarm immediately reappears as active the panel should be replaced In order to replace the VPS the panel must be removed and replaced with another upper fresh air panel equipped with VPS Upon installation a new vent position sensor assembly requires calibration as follows 1 Rotate the vent to the 0 position 2 Code select 45 will automatically display Press the Enter key and hold for 5 seconds 3 After the enter key has been pressed the display will read CAL for calibration Press the ALT MODE key and hold for five seconds After the calibration has been completed Code 45 will display O CMH CFM 4 5 6 24 CONTROLLER 6 21 1 Handling Controller CAUTION Do not remove wire harnesses from con troller unless you are grounded to the unit frame with a static safe wrist strap CAUTION Unplug all controller connectors before performing arc welding on any part of the container The guidelines and cautions provided herein should be followed when handling the Controller DataCORDER module These precautions and procedures should be implemented when replacing the module when doing any arc welding on the unit or when service to the refrigeration unit requires handling and removal of the contr
176. mbly 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 Turn the shaft by hand to see that it moves freely g Install the oil suction screen the oil suction screen hold down plate and the bottom plate 6 8 6 Compressor Level CAUTION Use only Carrier Transicold approved Polyol Ester Oil POE Castrol Icematic SW20 compressor oil with R 134a Buy in quantities of one quart or smaller When using this hygroscopic oil immediately reseal Do not leave container of oil open or contamination will occur a Checking the Oil Level in the Compressor 1 Operate the unit in cooling mode for at least 20 min utes Checkthe front oil sight glass on the compressor to ensure that no foaming of the oil is present after 20 minutes of operation Ifthe oil is foaming excessively after 20 minutes of operation check the refrigerant system for flood back of liquid refrigerant Correct this situation before performing the following step Turn unit off to check the oil level The correct oil level range should be between the bottom to one eighth level of the sight glass If the level is above one eighth oil must be removed from the compressor To remove oil from the compressor follow step d in this section If the level is below the bottom of the sight glass add oil to the compressor followi
177. n digit base part number and a two digit dash number See the unit identification Matrix found at the Carrier Web site www container carrier com 1 3 32 Controller Two different controllers are available 1 Remanufactured Controller is the equivalent of a new OEM controller and is supplied with a 12 month warranty 2 Repaired Controller has had previous faults repaired and upgraded with the latest software Note Repaired controllers are NOT to be used for warranty repairs only full OEM Remanufactured controllers are to be used Controllers will be factory equipped with the latest version of operational software but will NOT be configured for a specific model number and will need to be configured at the time of installation or sale The following Part numbers cover ALL previous MicroLink 2 and 2i controllers Description Usage 69NT40 489 501 69NT40 489 501 69NT40 511 12 56005 RS 00 The identification label on each controller will have the part number as shown above followed by a dash and then a blank space to allow the final dash number to be added at the time of sale Once a unit has been configured the last digits of the part number can be found in the T 300 Unit Matrix It is important when installing a controller thatthis final piece of the part number is added Example If a repaired controller is required for a 69 40 511 343 PID 0809 Use the 21 reciprocati
178. n the U S A refer to EPA section 608 WARNING Never use air for leak testing It has been de termined that pressurized mixtures of re frigerant and air can undergo combustion when exposed to an ignition source 6 1 SECTION LAYOUT Service procedures are provided herein beginning with refrigeration system service then refrigeration system component service electrical system service temperature recorder service and general service Refer to the Table Of Contents to locate specific topics 6 2 SERVICE VALVES The compressor suction compressor discharge and liquid line service valves see Figure 6 1 are provided with a double seat and a gauge connection which enable servicing of the compressor and refrigerant lines Turning the valve stem clockwise all the way forward will frontseat the valve to close off the suction discharge or liquid line and open the gauge port to the compressor or low side Turning the stem counterclockwise all the way out will backseat the valve to open the connections and close off the port With the valve stem midway between frontseat and backseat the lines are open to both the connections and the gauge connection For example the valve stem is first fully backseated when connecting a manifold gauge to measure pressure Then the valve is opened 1 4 to 1 2 turn to measure the pressure a 2276666 mAN EN SS SS 55 LAE 4 VALVE VALV FRONTSEATED BACKSEATED Clockw
179. nation thermostat HTT or the failure of the DTS to go above set point within two hours of defrost initiation After one half hour with a frozen range set point or one half hour of continuous compressor run time if the return air falls below 7 C 45 F the Controller checks to ensure the DTS reading has dropped to 10 C or below If not a DTS failure alarm is given and the defrost mode is operated using the return tempera ture sensor The defrost mode will be terminated after one hour by the Controller Alarm 61 is triggered by detection of improper amperage resulting from heater activation or 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 62 is triggered by improper current draw increase or decrease resulting from compressor turn on or The compressor is expected to draw a mini mum of 2 amps failure to do so will activate 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 63 is triggered by the current limiting system If the compressor is ON and current limiting procedures cannot maintain a current level below the user se lected limit the current limit alarm is activated This alarm is a display alarm and is inactivated by power cycling the unit changing the current limit via the code select Cd32
180. nd ambient sensor are located at the right side of the compressor Autotransformer Power Cables and Plug Compressor Sight Glass View Port Compressor Guard Supply Temperature Sensor Supply Recorder Sensor Ambient Sensor Supply Air Thermometer Port Discharge Service Valve Discharge Temperature Sensor Discharge Pressure Regulator Valve Suction Temperature Sensor RON Tutte We 77 22 aec 16 13 Quench Valve Temperature Bulb 14 Stepper Motor Drive for item 18 15 Emergency Bypass Module for item 18 16 Quench Valve 17 Access Valve 18 Suction Modulating Valve 19 Suction Service Valve 20 Compressor Crankcase Heater 21 Compressor Motor 22 Suction Pressure Transducer 23 High Pressure Switch 24 Discharge Pressure Transducer Figure 2 3 Compressor Section T 285 2 1 5 Air Cooled Condenser Section line valve filter drier condenser pressure transducer and fusible plug The air cooled condenser section Figure 2 4 consists The condenser fan pulls air inthe bottom ofthe coil and it of the condenser fan condenser coil receiver with sight is discharged horizontally out through the condenser fan glass moisture indicator quench valve manual liquid grille 1 Grille and Venturi Assembly 9 Sight Glass 2 Condenser Fan 10 Fusible Plug Rupture
181. nd display module serve to provide user access and readouts for both of the controller functions temperature control and DataCORDER The functions are accessed by key pad selections and viewed on the display module The components are designed to permit ease of installation and removal Fy 8 t 4 of E B CONTROLLER e CONTROL MODULE E TEMPERATURE CONTROL SOFTWARE CONFIGURATION VARIABLE CnF CONFIGURATION OPERATIONAL ALARMS pRE TRIP SOFTWARE SOFTWARE AL lt 70 FUNCTION CODE DISPLAY ili ea Jj pu DATAREADER DataCORDER SOFTWARE 4 m go LN DATA CONFIGURATION OPERATIONAL ALARMS STORAGE ter Devi SOFTWARE SOFTWARE AL 69 MEMORY 1 1 Software CONFIGURATION FUNCTION TO VARIABLE DISPLAY DISPLAY dCF read only CODE dC Scrollback Figure 3 1 Temperature Control System 3 1 T 285 3 1 1 Key Pad Table 3 1 Key Pad Function The key pad Figure 3 2 is mounted on the right hand side of the control box The key pad consists of eleven FUNCTION push button switches that act as the user s interface Code Select Accesses function codes with the controller Descriptions of the switch functions are provided Table 3 1 Pre Trip Disp
182. ndicate various modes of operation 1 2 CONFIGURATION IDENTIFICATION Unit identification information is provided on a plate located near the compressor The plate provides the unit model number the unit serial number and the unit parts identification number PID The model number identifies the overall unit configuration while the PID provides information on specific optional equipment factory provision to allow for field installation of optional equipment and differences in detailed parts Configuration identification for the models covered herein are provided in the Carrier Transicold Container Identification Matrix found at the Carrier Web site www container carrier com 1 3 OPTION DESCRIPTION Various options may be factory or field equipped to the base unit These options are listed in the tables and described in the following subparagraphs 1 1 1 3 1 Battery The refrigeration controller may be fitted with standard replaceable batteries or a rechargeable battery pack 1 3 2 Dehumidification The unit may be fitted with a humidity sensor This sensor allows setting of a humidity set point in the controller In the dehumidification mode the controller will operate to reduce internal container moisture level 1 3 3 Control Box The control box may be of aluminum or composite material and each type box may be fitted with a lockable door 1 3 4 Temperature Readout The unit may be fitted with suction and discharge
183. nditions and perform a pre trip diagnosis in accordance with the following paragraph 4 8 PRE TRIP DIAGNOSIS CAUTION Pre trip inspection should not be per formed with critical temperature cargoes in the container o CAUTION When Pre Trip key is pressed dehumidifi cation and bulb mode will be deactivated Atthe completion of Pre Trip activity dehu midification and bulb mode must be reacti vated Pre Trip diagnosis provides automatic testing of the unit components using internal measurements comparison logic The program will provide a PASS or FAIL display to indicate test results The testing begins with access to a pre trip selection menu The user may have the option of selecting one of T 285 three automatic tests depending software revision installed These tests will automatically perform a series of individual pre trip tests The user may also scroll down to select any of the individual tests The contents of the menus are as follows PRE TRIP SELECTION MENU Auto or Auto 1 Auto Jawos P P1 P2 P3 P P1 P2 P3 P P1 P2 P3 P4 P5 P7 P4 P5 P6 P8 P9 P10 P8 rSLts rSLts P4 P5 P6 rSLts A detailed description of the pre trip test codes is listed in Table 3 7 page 3 20 If no selection is made the pre trip menu selection process will terminate automatically However dehumidification and bulb mode must be reactivated manually if required Scrollin
184. ng compressor base controller 12 56002 The dash number from the T 300 Unit Matrix Controller Column is 90 The full part number for the necessary controller is 12 56002 90 1 3 33 Condenser Grille Two styles of condenser grilles are available direct bolted grilles and hinged grilles 1 3 34 Emergency Bypass The unit may be equipped with switches to allow emergency bypass ofthe controller The EMERGENCY BYPASS switch functions to bypass the controller in the event of controller failure The EMERGENCY DEFROST switch functions to bypass all controls and place the unit in the defrost mode 69NT40 531 69NT40 489 501 69NT40 489 1XX T 285 SECTION 2 DESCRIPTION 2 1 GENERAL DESCRIPTION 2 1 1 Refrigeration Unit Front Section The unit is designed so that the majority of the components are accessible from the front see Figure 2 1 The upper access panels allow entry into the evaporator section and the center access panel allows access to the thermostatic expansion valve and Access Panel Evap Fan 1 Access Panel Heater amp Thermostatic Expansion Valve Fork Lift Pockets Control Box Compressor Unit Serial Number Model Number and Parts Identification Number PID Plate Condenser Fan TransFRESH Communications Connector ON OPO N gt evaporator coil heaters The unit model number serial number and parts identification number can be found on the serial plate to the left of the compressor
185. ng is sensed outside of 50 to 70 C 1 2 3 Out of Range 58 to 158 F range dAL75 Cargo Probe 4 Out of The cargo probe temperature reading is outside of 50 to 70 C 58 to Range 158 F range dAL76 77 Future Expansion These alarms are for future expansion and are not in use at this time The network data point is outside of its specified range The DataCORD ER is configured by default to record the supply and return recorder sen ponds Network Data Point sors The DataCORDER may be configured to record up to 8 additional 1 8 Out of Ranae network data points An alarm number AL78 to AL85 is assigned to each 9 configured point When an alarm occurs the DataCORDER must be inter rogated to identify the data point assigned When a humidity sensor is installed it is usually assigned to AL78 Real backup battery is too low to adequately main EE nas E ey rca dAL90 Future Expansion This alarm is for future expansion and is not in use at this time dAL91 Alarm List Full The DataCORDER alarm queue is determined to be full eight alarms T 285 3 26 SECTION 4 OPERATION 4 1 INSPECTION Before Starting WARNING Beware of unannounced starting of the evaporator and condenser fans The unit may cycle the fans and compressor unex pectedly as control requirements dictate a If container is empty check inside for the following 1 Check channels or T bar floor for cleanliness Channels must be f
186. ng step b below b Adding with Compressor in System 1 The recommended method is to add oil using an oil pump at the oil fill valve see item 11 Figure 6 6 In an emergency where an oil pump is not available oil may be drawn into the compressor through the suction service valve Connect the suction connection of the gauge man ifold to the compressor suction service valve port and immerse the common connection of the gauge manifold in an open container of refrigeration oil Extreme care must be taken to ensure the manifold common connection remains immersed in oil at all times Otherwise air and moisture will be drawn into the compressor 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 induce a vacuum in the compressor crank case SLOWLY crack the suction gauge manifold valve and oil will flow through the suction service valve into the compressor Add oil as necessary c Adding Oil to Service Replacement Compressor Service replacement compressors are shipped without oil If oil is present in the crankcase it must be tested to ensure it is the correct oil and that the moisture level is acceptable When adding oil to a service replacement compressor add three liters 6 3 pints using an oil pump at the oil fill valve s
187. nge at the recording the test fails Setup The defrost temperature sensor DTS reading will be displayed on the left display The right display will show the supply air temperature The unit will run FULL COOL for 30 minutes maximum until the DTT is considered closed Once the DTT is considered closed the unit simulates defrost by running the heaters for up to two hours or until the DTT is considered open Pass Fail Criteria The test fails if the DTT is not considered closed after the 30 minutes of full cooling HTT opens when DTT is considered closed or if return air temperature rises above 248 C 120 F Setup After completion of the defrost test the testing proceeds directly to test P10 1 if the container temperature is above 7 C 45 F If the container temper ature is below 7 C a 180 minute timer will be started the set point will be set to 7 C and the control will be placed in normal heat The left display will read P10 0 and the unit will continue in operation until the temperature is raised to set point Pass Fail Criteria If the temperature does not reach set point less 0 3 C or 6 7 before the timer times out display will read P100 FAIL The test will not auto repeat Setup When the container temperature is greater than or equal to the 7 2 45 F set point which was set in the frozen mode heat test the left display will read 10 1 and the right display will show the return air temperatu
188. nto the suction line See Figure 6 19 for bulb placement 3 Insulate the thermal bulb 4 Braze inlet connection to inlet line see Figure 6 21 5 Braze outlet connection to outlet line 6 Reinstall the cushion clamps on inlet and outlet lines 7 the equalizer connection to the equalizer line 8 Check superheat refer to step 6 14 1 6 14 3 Semi Hermetic Valve Replacement a Removing Expansion Valve 1 Pump down the unit per paragraph 6 4 2 Remove insulation Presstite from expansion valve bulb and power assembly and then remove thermal bulb from the suction line see Figure 6 19 3 Loosen flare nut and disconnect 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 The 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 T 285 1 Power Assembly 2 Body Flange Gaskets 3 Seat Gasket 4 Bulb 5 Cage Assembly 6 Body Flange 7 Body Flange Screws Figure 6 22 Thermostatic Expansion Valve Alco b Installing Expansion Valve CAUTION If the thermostatic expansion valve is found to be in need of replacement then the power head and cage assembly are to replaced as a pair They are a matched pair and replacing one without the other will affect the superheat setting 1 Replace all gaskets making sure
189. o protect the controller from both physical and electrostatic discharge dam age during storage and transit b Installation Install the module by reversing the removal steps Torque values for mounting screws item 2 see Figure 6 26 are 0 23 mkg 20 inch pounds Torque value for the connectors MA MB MC KA amp KB is 0 12 mkg 10 inch pounds 6 21 5 Battery Replacement If required use tool 07 00418 00 6 22 TEMPERATURE SENSOR SERVICE Procedures for service of the Return Recorder Return Temperature Supply Recorder Supply Temperature Ambient Defrost Temperature Compressor Discharge and Compressor Suction temperature sensors are provided in the following sub paragraphs 6 22 1 Sensor Checkout Procedure To check a sensor reading do the following a Remove the sensor and place in a 0 C 32 F ice wa ter bath The ice water bath is prepared by filling an insulated container of sufficient size to completely immerse bulb with ice cubes or chipped ice then fill ing voids between ice with water and agitating until mixture reaches 0 C 32 F measured on a labora tory thermometer Start unit and check sensor reading on the control panel The reading should be 0 C 32 F If the read ing is correct reinstall sensor if it is not continue with the following Turn unit OFF and disconnect power supply Referto paragraph 6 21 and remove controller to gain access to the sensor plugs U
190. ol initiation when all units are Time Seconds powered up together The eight possible offset values are O Factory Default 3 6 9 12 15 18 or 21 seconds The current limit is the maximum current draw allowed on any phase at any time Limiting the unit s current reduces the load on the main power supply This is ac Cd32 Current Limit complished by reducing the SMV position until current draw is reduced to the set Amperes point When desirable the limit can be lowered Note however that capacity is 15 17 19 21 Factory Default 23 Relative humidity set point is available only on units configured for dehumidifica tion When the mode is activated the control probe LED flashes on and off every second to alert the user If not configured the mode is permanently deactivated and will display The value can be set to OFF TEST or a range of Cd35 Lo speed evaporator motors are selected code Cd36 then set point Perishable Mode ranges from 60 to 95 When TEST is selected or test set point is entered the Cd33 midification Control After a period of five minutes in the TEST mode has elapsed the previously 96 RH selected mode is reinstated also reduced The five values for 460vac operation are 65 to 9596 relative humidity in increments of 196 If bulb mode is active code Dehumidification Hu heat LED should illuminate indicating that dehumidification mode is activated NOTE If humidific
191. oller 1 Controller Software Programming Port 2 Mounting Screw 3 Controller 4 Test Points Figure 6 26 Controller Section of the Control Box a Obtain a grounding wrist strap Carrier Transicold part number 07 00 304 00 and a static dissipation mat Carrier Transicold part number 07 00304 00 The wrist strap when properly grounded will dissi pate any potential buildup on the body The dissipa tion mat will provide a static free work surface on which to place and or service the controller b Disconnect and secure power to the unit c Place strap on wrist and attach the ground end to any exposed unpainted metal area on the refrigeration unit frame bolts screws etc d Carefully remove the Controller Do not touch any of the electrical connections if possible Place the mod ule on the static mat 6 19 e The strap should be worn during any service work on the controller even when it is placed on the mat 6 21 2 Controller Trouble Shooting A group oftest points TP see Figure 6 26 are provided on the controller for trouble shooting electrical circuits see schematic diagram section 7 A description of the test points follows NOTE Use a digital voltmeter to measure ac voltage between TP s and ground TP9 except for TP8 TP2 This test point enables the user to check if the internal protector for the compressor motor IP CP or high pressure switch is open This test point enables
192. on that scale has been dissolved When de scaling is complete drain the solution and flush thoroughly with water Following the water flush circulate a 56 7 gram 2 ounce per 3 785 liter 1 U S gallon solution of Oakite No 22 thru the tubes to neutralize Drain this solution 10 Flush the tubes thoroughly with fresh water NOTE 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 nec essary 11 Put the unit back in service and operate under nor mal load Check the head pressure If normal a thor ough 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 T 285 Fill condenser with clean ing solution Do not add solution more rapidly than vent can exhaust gases caused by chemical action P di 1 Pipe 5 Approximate Vent pipe Figure 6 18 Water Cooled Condenser Cleaning Gravity Circulation 6 13 FILTER DRIER On units equipped with a water cooled condenser if the sight glass appears to be flashing or bubbles are constantly moving through the sight glass when the suction modulation valve is fully open the unit may have a low refrigerant charge or the filter drier could be partially plugged a To Check
193. ontains the Electrical Schematics and Wiring Diagrams The diagrams are presented as follows Figure 7 1 Provides the legend for use with all figures Figure 7 2 Provides the schematic diagram for units with normal evaporator fan operation Figure 7 3 Provides the schematic diagram for units with single evaporator fan capability The basic difference be tween this schematic and the normal schematic can be found in the control section for the fan contactors and in the high voltage section for the motors The single evaporator fan units will maintain one fan online if the other fan internal protector opens Figure 7 4 Supplements the other schematic diagrams and provides schematics for the Vent Position Sensor VPS TransFRESH NatureFRESH and chart recorders Figure 7 5 Provides the wiring diagram for units with normal evaporator fan operation and dual capacitor evaporator fan motors Figure 7 6 Provides the wiring diagram for units with single evaporator fan capability and dual capacitor evaporator fan motors Figure 7 7 Provides the wiring diagram for units with normal evaporator fan operation and single capacitor evaporator fan motors Figure 7 8 Provides the wiring diagram for units with single evaporator fan capability and single capacitor evaporator fan motors Figure 7 9 Supplements the other wiring diagrams and presents wiring for the Partlow electronic temperature recorder Sequence of operation descriptions for the various modes of
194. onverter If the A D converter fails to calibrate for 30 consecutive seconds this alarm is activated This alarm will be inactivated as soon as the A D converter calibrates Alarm 50 is activated whenever the sensor is outside the valid range There is a 5 minute adjustment period where the user can change the vent position without AL50 Fresh Air Position generating an alarm event The sensor requires 5 minutes of no movement to Sensor VPS confirm stability If the vent position changes at any point beyond the 5 minute adjustment period the sensor will generate an alarm event The alarm is trig gered off when the unit power cycles and the sensor is within valid range During start up diagnostics the EEPROM 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 activated During control processing any operation in volving alarm list activity that results in an error will cause Alarm 51 to be acti vated Alarm 51 is a display only alarm and is not written into the alarm list Pressing the ENTER key when is displayed 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 is activated whenever the alarm list is determined to be full at start up 152 Alarm List Full or after recording an alarm in the list Alarm 52 is displayed but is not recor
195. ooling with the condenser fan motor CF compressor motor CH evaporator fan motors EF energized and the COOL light illumi nated See Figure 4 5 When the air temperature decreases to a predeter mined tolerance above set point the in range light is illuminated C As the air temperature continues to fall modulating cooling starts at approximately 2 5 C 4 5 F above set point See Figure 4 3 d The controller monitors the supply air Once the sup ply air falls below set point and 096 SMV position is reached the controller periodically records the sup ply air temperature set point and time A calculation is then performed by subtracting the set point reading from the supply air and multiplying the result by the time reading The result is negative number e When the calculation reaches 250 contacts TC and TN are opened to de energize compressor and con denser fan motors The cool light is also de ener gized f The evaporator fan motors continue to runto circulate air throughout the container The in range light re mains illuminated as long as the supply air is within tolerance of set point g When the supply air temperature increases to 0 2 0 4 F above set point and the three minute off time has elapsed relays TC and TN are energizes to re start the compressor and condenser fan motors The cool light is also illuminated 4 10 2 Sequence Of Operation Perishable Mode Heating NOTE The un
196. or reading outside the valid AL69 En range of 60 76 F to 150 C 302 F This is a display alarm and has associated failure action NOTE If the Controller is configured for four probes without a DataCORDER the DataCORDER alarms AL70 and AL71 will be processed as Controller alarms AL70 and AL71 The Controller performs self check routines if an internal failure occurs an ERR alarm will appear on the display This is an indication the Controller needs to be replaced ERROR DESCRIPTION ERR 0 RAM failure 0058 that the Controller working memory has 1 Program ERR Memory failure Indicates a problem with the Controller program Failure ERR 2 Watchdog The Controller program has entered a mode where time out by the Controller program has stopped executing ERR On board timer The on board timers are no longer operational failure Timed items such as defrost etc may not work ERR 4 Internal counter Internal multi purpose counters have failed These failure counters are used for timers and other items _ A D fai The Controller s Analog to Digital A D converter ERR 5 A D failure has failed Entr Enter Setpoint StPt Press Arrow amp The Controller is prompting the operator to enter a set point Enter Low Main Voltage LO Function Codes This message will be alternately displayed with the set point whenever the supply Cd27 38 disabled NO alam voltage is less than
197. over The out of range timer starts as soon as the temperature exceeds the in range tolerance value set by function code Cd30 3 3 11 Perishable Dehumidification Bulb Mode Bulb mode is an extension of the dehumidification mode which allows changes to the evaporator fan speed and or defrost termination set points Bulb mode is active when configuration code Cd35 is set to Bulb Once the bulb mode is activated the user may then change the dehumidification mode evaporator fan operation from the default speed alternates from low to high each hour to constant low or constant high speed This is done by toggling function code Cd36 from its default of alt to Lo or Hi as desired If low speed evaporator fan operation is selected this gives the user the additional capability of selecting dehumidification set points from 60 to 95 instead of the normal 65 to 9596 In addition if bulb mode is active function code Cd37 may be set to override the previous defrost termination thermostat settings Refer to paragraph 4 10 4 The temperature at which the defrost termination thermostat will be considered open may be changed in 0 1 C 0 2 F increments to any value between 25 6 C 78 F and 4 C 39 2 F The temperature at which the defrost termination thermostat is considered closed for interval timer start or demand defrost is 10 C 50 F for open values from 25 6 C down toa 10 C setting For open values lower than 1
198. perature operation When operating with the water cooled condenser active see Figure 2 7 lower schematic the refrigerant gas passes through the air cooled condenser and enters the water cooled condenser shell The water flowing inside the tubing cools the gas to saturation temperature in the same manner as the air passing over the air cooled condenser The refrigerant condenses on the outside of the tubes and exits as a high temperature liquid The water cooled condenser also acts as a receiver storing excess refrigerant The liquid refrigerant continues through the liquid line service valve the filter drier which keeps refrigerant clean and dry and a heat exchanger that increases subcooling of the liquid to the thermostatic expansion valve As the liquid refrigerant passes through the variable orifice of the expansion valve some of it vaporizes into a gas flash gas Heat is absorbed from the return air by the balance of the liquid causing it to vaporize in the evaporator coil The vapor then flows through the suction modulating valve to the compressor The thermostatic expansion valve is activated by the bulb strapped to the suction line near the evaporator T 285 outlet The valve maintains a constant superheat at the Coil outlet regardless of load conditions During periods of low load the suction modulating valve decreases flow of refrigerant to the compressor This action balances the compressor capacity with the loa
199. perature recording 6 23 If the optional DataCORDER battery pack is being used and the charge is too low to enable recording during the power off period of less than two days the pen tip will move to below the inner chart ring for the period when no data was recorded by the DataCORDER If the power has been OFF for more than two days the recorder will NOT re synchronize the chart will not advance to present time the pen tip will move to the currently recorded temperature and the recorder will resume normal temperature recording 6 23 1 Replacing the Recorder a Turn power to the unit OFF b Open the recorder door item 1 see Figure 6 31 c Locate the connector below the recorder and squeeze the ears together to disconnect the plug item 6 d Remove the four mounting screws item 8 and remove the recorder e Install the new recorder by reversing the above steps 6 23 2 Changing the Chart a Lift the stylus item 5 Figure 6 31 by grasping the arm near the base and pull the arm away from the chart until it snaps into its retracted position b Remove the chart retaining nut item 10 remove the used chart and record today s date on the old chart c Press the Change Chart button item 2 NOTE Failure to press the change chart button when changing a chart with the power OFF may result in the chart advancing when power is applied d Install a new chart make sure the chart center hole
200. perature sensors b Generic Mode The generic recording mode allows user selection of the network data points to be recorded The user may select up to a total of eight data points for recording A list of the data points available for recording follows Changing the configuration to generic and selecting which data points to record may be done using the Carrier Transicold Data Retrieval Program 1 Control mode 2 Control temperature 3 Frequency 4 Humidity T 285 3 8 Phase A current Phase B current Phase C current Main voltage Suction modulation valve percentage 0 Discrete outputs Bit mapped require special handling if used Discrete inputs Bit mapped require special handling if used Ambient sensor Compressor suction sensor Compressor discharge sensor Return temperature sensor Supply temperature sensor Defrost temperature sensor Discharge pressure transducer Suction pressure transducer Condenser pressure transducer 6 sensors dCF02 54 7 sensors 2 64 10 sensors Table 3 3 DataCORDER Standard Configurations 5 sensors 2 thermistor inputs supply amp return 02 5 USDA thermistor inputs 2 thermistor inputs supply amp return 2 thermistor inputs supply amp return 1 cargo probe thermistor input dCF02 94 1 humidity input Standard E 3 USDA thermistor inputs 6 sensors dCF02 6 4 humidity input 3 USDA thermistor inputs 3 USDA thermis
201. plays USDA 1 2 3 and the supply and return air temperatures Cold treatment recording is backed up by a battery so recording can continue if AC power is lost b USDA Message Trip Comment A special feature is incorporated which allows the user to enter a USDA or other message at the head of a data report The maximum message length is 78 characters Only one message will be recorded per day 3 6 12 USDA Cold Treatment Procedure The following is a summary of the steps required to initiate a USDA Cold Treatment a Calibrate the three USDA probes by ice bathing the probes and performing the calibration function with the DataReader or a personal computer This calibra tion procedure determines the probe offsets and stores them in the controller for use in generating the cold treatment report Refer to the Data Retrieval manual 62 10629 for more details Pre cool the container to the treatment temperature or below Install the DataCORDER module battery pack if not already installed 3 11 d Place the three probes probes are placed into the pulp of the fruit at the locations defined in the fol lowing table as the product is loaded Place in pulp of the product located next to the return air intake Place in pulp of the product five feet from the end of the load for 40 foot con tainers or three feet from the end of the load for 20 foot containers This probe should be placed in a center carton at
202. pressor mounting bolts from mounting plate and install mounting plate on replacement com pressor i Install replacement compressor terminal wiring kit following instructions included with kit j Install high pressure switch on compressor Install compressor and mounting plate in unit Connect junction box es to compressor and connect all wiring per wiring diagram Install junction box cover s m Install new gaskets on service valves Install mounting bolts in service valves and torque to 2 77 to 4 15 mkg 20 30 ft Ib Attach two hoses 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 Turn off valves on both hoses to pump Fully backseat open both suction and discharge service valves Remove vacuum pump lines Start unit and check refrigerant charge Refer to paragraph 6 7 Check moisture liquid indicator for wetness Change filter drier if necessary Refer to paragraph 6 13 Check compressor oil level per paragraph 6 8 6 Add oil if necessary T 285 6 8 2 Compressor Disassembly WARNING Before disassembly of any external com pressor component make sure to relieve possible internal pressure by loosening the bolts and tapping the component with a soft hammer to break the seal CAUTION Removing the compressor motor press fit stator in the field
203. r is detected It will scroll in intervals of 5 CMH 3 CFM Scrolling to Function Code 45 will display the Fresh Air Vent Position Data Recording of the Sensor Position The position of the vent will be recorded in the DataCorder whenever the unit is running under AC power and any of the following occur Trip start On every power cycle Midnight Manual change greater than 5 CMH 3 CFM and remains in that position for 5 minutes NOTE The user has 5 minutes to make necessary ad justments to the vent setting This time begins on the initial movement of the sensor The vent can be moved to any position within the 4 min utes On completion of the first 4 minutes the vent is required to remain stable for the next 4 minutes If vent position changes are detected during the 5 minutes stability period an alarm will be generated This provides the user with the ability to change the vent setting without generating multiple events in the DataCorder 4 3 2 Lower Fresh Air Makeup Vent a Full Open or Closed Positions Maximum air flow is achieved by loosening the wing nuts and moving the cover to the maximum open T 285 position 10096 position The closed position is 096 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 Reduced Flow for Fresh Air Makeup On some models the air slide is supplied with two adjustable air control disks The fre
204. r to section paragraph 6 7 3 Backseat manual liquid line valve to close off gauge port Close liquid valve on cylinder Start unit in cooling mode Run approximately 10 min utes and check the refrigerant charge 6 7 3 Adding Refrigerant to System Partial a oc Examine the unit refrigerant system for any evidence of leaks Repair as necessary Refer to paragraph 6 5 Maintain the conditions outlined in paragraph 6 7 1 Fully backseat the suction service valve and remove the service port cap Connect charging line between suction service valve port and cylinder of refrigerant R 134a Open VAPOR valve Partially frontseat turn clockwise the suction service valve and slowly add charge until the refrigerant appears at the proper level 6 8 COMPRESSOR WARNING Make sure power to the unit is OFF and power plug disconnected before replacing the compressor NOTES 1 The compressor should not operate in a vacuum greater than 500 mm hg 20 inches hg 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 Refer to paragraph 6 8 6 4 compressor terminal wiring kit must be ordered as a separate item when ordering replacement comp
205. ranean and certain other tropical fruit flies Exposing infested fruit to temperatures of 2 2 degrees Celsius 36 F or below for specific periods results the mortality of the various stages of this group of insects In response to the demand to replace fumigation with this environmentally sound process Carrier has integrated Cold Treatment capability into its microprocessor system These units have the ability to maintain supply air temperature within one quarter degree Celsius of setpoint and record minute changes in product temperature within the DataCORDER memory thus meeting USDA criteria Information on USDA is provided in the following subparagraphs a USDA Recording A special type of recording is used for USDA cold treatment purposes Cold treatment recording requires three remote temperature probes be placed at prescribed locations in the cargo Provision is made to connect these probes to the DataCORDER via receptacles located at the rear left hand side of the unit Four or five receptacles are provided The four three pin receptacles are for the probes and fifth five pin receptacle is the rear connection for the the Interrogator The probe receptacles are sized to accept plugs with tricam coupling locking devices A label on the back panel of the unit shows which receptacle is used for each probe The standard DataCORDER report displays the supply and return air temperatures The cold treatment report dis
206. rately bound manual covering operation and parts for the CTD NatureFresh System is available see the following chart Manual Number Equipment Covered Type of Manual T 297 Humidity Management Technical System Option Supplement 1 3 27 Power Correction The unit may be fitted with a set of power factor correction capacitors to assist in correction of imbalance in current draw by the compressor 1 3 28 Evaporator Evaporator section options include a semi hermetic thermal expansion valve a hermetic thermal expansion valve and two sizes of heat exchangers The unit may have 4 or 6 heaters 1 3 29 Evaporator Fan Operation Two evaporator fan motor operation systems are available On units with Normal Evaporator Fan Operation opening of an evaporator fan internal protector will shut down the unit On units equipped with Single Evaporator Fan Capability additional relays are installed to allow the unit to continue to operate on a single fan 1 3 30 Labels Operating Instruction and Function Code listing labels will differ depending on the options installed For example additional operating instructions are required to describe start up of a unit equipped with an autotransformer Where the labels are available with additional languages they are listed in the parts list 1 3 31 Plate Set Each unit is equipped with a tethered set of wiring schematic and wiring diagram plates The plate sets are ordered using a seve
207. re The set point will then be changed to 17 7 C 0 F The unit will then have a maximum of three hours to pull the container temperature down to the 17 7 C set point Pass Fail Criteria If this occurs within the three hour time limit the test passes If pulldown is not completed within the three hour time the test fails Setup After the unit has successfully completed frozen pulldown test the left display will read P10 2 and the right display will show return air temperature The unit will then be required to maintain 17 7 0 F temperature within 0 5 C 0 9 F of set point until a DataCORDER recording is executed The recorder return probe temperature running total and its associated counter will be zeroed for the remainder of the recording period at the start of this test so that the actual recorded value will be an average of only this test s results Once the recording interval is complete the average return temperature will be recorded in the DataCORDER and stored in memory for use in applying the test pass fail criteria Pass Fail Criteria If the recorded temperature is within 0 5 C of set point from test start to DataCORDER recording the test passes If temperature is out side of the tolerance range at the DataCORDER recording the test fails 3 23 T 285 Table 3 8 DataCORDER Function Code Assignments NOTE Inapplicable Functions Display To Access Press ALT MODE key TITLE DESCRIPTION Cur
208. readouts of set point and supply or return air temperatures c Provide ability to read and if applicable modify the Configuration Software Variables Operating Soft ware Function Codes and Alarm Code Indications d Provide a Pre Trip step by step checkout of refrigera tion unit performance including proper component operation electronic and refrigeration control opera tion heater operation probe calibration pressure limiting and current limiting settings e Provide battery powered ability to access or change selected codes and set point without AC power con nected Control Circuit Power Connection Location In back of controller Software Programming Port Battery Pack 2i Controller f Provide the ability to reprogram the software through the use of a memory card The memory card auto matically downloads new software to the controller when inserted 3 2 1 Configuration Software Configuration Variables The Configuration Software is a variable listing of the components available for use by the Operational Software This software is factory installed in accordance with the equipment fitted and options listed on the original purchase order Changes to the Configuration Software are required only when the original software has been lost or a physical change has been made to the unit such as the addition or removal of an option A Configuration Variable list is provided in Table 3 4 Change to the
209. ree of debris for proper air cir culation 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 refer to paragraph 6 16 4 Check for dirt or grease on evaporator fan or fan deck and clean if necessary 5 Check evaporator coil for cleanliness or obstruc tions Wash with fresh water 6 Check defrost drain pans and drain lines for obstruc tions 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 in place on access panels o Check condenser coil for cleanliness Wash with fresh water c Open control box door Check for loose electrical con nections or hardware d Check color of moisture liquid indicator e Check oil level in compressor sight glass 4 2 CONNECT POWER WARNING Do not attempt to remove power plug s be foreturning OFF start stop switch ST unit circuit breaker s and external power source WARNING Make sure the power plugs are clean and dry before connecting to any power recep tacle 4 2 1 Connection To 380 460 vac Power 1 Make sure start stop switch ST on control panel and circuit breaker CB 1 in the control box are in position 0 OFF 2 Plug the 460 vac yellow cable into a de energized 380 460 vac 3 phase power source Energize the po
210. rent reading of the supply recorder sensor Current reading of the return recorder sensor dC3 5 ee 1 2 3 Temper Current readings of the three USDA probes Network Data Current values of the network data points as configured Data point 1 Code dC6 13 Points 1 8 6 is generally the humidity sensor and its value is obtained from the ler once every minute Cargo Probe 4 Tem 14 Current reading of the cargo probe 4 dC15 19 Expansion These codes are for future expansion and are not in use at this time Current calibration offset values for each of the five probes supply return Temperature Sen k 20 24 sors 1 5 Calibration I 1 2 and 3 These values are entered via the interrogation pro dC25 Future Expansion This code is for future expansion and is not in use at this time ane Ya e a a number consists of eight characters Function code dC26 contains the first four characters Function code dC27 contains the last dC26 27 S N Left 4 Right 4 in characters This serial number is the same as the Controller serial num ber An approximation of the number of logging days remaining until the Data 8028 Minimum Days Left CORDER starts to overwrite the existing data dC29 Days Stored Number of days of data that are currently stored in the DataCORDER The date when a Trip Start was initiated by the user In addition if the system dC30 Date of last Trip start goes withou
211. reset the valve will make a ratcheting noise that may be heard or felt as it is attempting to close If this can be heard or felt it indicates that the control ler and drive module are attempting to close the valve and may serve as a quick indication that the drive module is in working order During the first few minutes of unit operation pressor reliability enhancement logic CREL may be in effect This places the valve at a 21 staging posi tion and is sufficient to drive the temperature of the Y probe down several degrees during this inter val After the CREL time out has been met the valve will start responding to the control logic and open or close relative to the demand Scrutinize the unit op eration for a few minutes While in pulldown the unit will open the SMV to a maximum discharge pressure of 325 psig in high ambient conditions or as much as the current setting and control logic will allow The current level should be high A lower discharge pres sure will be seen in lower ambient temperatures Once the unit has reached set point the SMV will go into control mode Both the discharge suction pres sures and current draw will go significantly lower Once below set point the suction pressure should go into a vacuum within several minutes Should the op eration differ as mentioned the SMV drive module or wiring may be faulty g Check for correct wire location at the drive module SD and the
212. ressor Appropriate installation instructions are included with kit 5 Refer to Table 6 7 and Table 6 8 for applicable compressor wear limits and torque values 6 Refer to Figure 6 37 for charts on compressor pressure temperature and motor current curves 6 8 1 Removal and Replacement of Compressor a b Remove the protective guard from lower section of the unit Pump down low side refer to paragraph 6 4 or front seat compressor service valves and remove refriger ant from compressor using a refrigerant recovery system Locate the compressor junction box Tag and discon nect wiring from compressor terminals and remove compressor junction box Loosen service valve mounting bolts break seal and then remove bolts Remove compressor plate mounting bolts Remove compressor and mounting plate Refer to paragraph 2 2 for weight of compressor Remove high pressure switch HPS from compres sor and check operation of switch refer to paragraph 6 9 2 1 Discharge Valve 8 Bottom Plate Flange 9 Sight Glass 2 High Side Pressure 10 Oil Drain Plug Connection 11 Oil Charging Valve 3 Low Side Pressure 12 Bearing Head Connection 13 Oil Pump Suction Valve Flange 14 Oil Fill Plug Motor End Cover 15 Oylinder Head Serial Model No Plate 16 Crankcase Heater Valve Plate 6 6 Remove com
213. riteria are applicable A defrost with probe check will be initiated if 25 of 30 readings or 10 consecutive readings are outside of the limits FALLING TEMPERATURE In this configuration a probe check will not be run as a part of a normal defrost but only as a part of a defrost initiated due to a diagnostic reading outside of the limits c The 30 minute timer will be reset at each of the follow ing conditions 1 At every power up 2 At the end of every defrost 3 After every diagnostic check that does not fall out side of the limits as outlined above d Probe Check A defrost cycle probe check is accomplished by energizing just the evaporator motors for eight minutes at the end of the normal defrost At the end of the eight minute period the probes will be compared to a set of predetermined limits The defrost indicator will remain on throughout this period Any probe s determined to be outside the limits will cause the appropriate alarm code s to be displayed to identify which probe s needs to be replaced The P5 Pre Trip test must be run to inactivate alarms 4 10 SEQUENCE OF OPERATION General operation sequences for cooling heating and defrost are provided in the following subparagraphs Schematic representation of controller action are provided in Figure 4 3 and Figure 4 4 Refer to Section 3 for detailed descriptions of special events and timers that are incorporated by the controller in specific modes of opera
214. rom the controller pro gramming port CAUTION 69NT40 511 3XX units must use software revision 5108 or higher to enable stepper motor Optional features may require higher software revision levels to enable functionality CAUTION Do not allow moisture to enter wire splice area as this may affect the sensor resistance CAUTION Do not allow the recorder stylus to snap back down The stylus arm base is spring loaded and damage may occur to the chart or the stylus force may be altered CAUTION Theinside mechanism ofthe recorder particularly the inside of the element housing should never 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 CAUTION Recorder element capillary tubing may be bent but never sharper than 1 2 radius extra care should be taken when bending adjacent to welds The bulb should never be bent as this will affect calibration T 285 Safety 4 TABLE CONTENTS PARAGRAPH NUMBER Page GENERAL SAFETY NOTICES Safety 1 FIRSTAID zm Safety 1 OPERATING PREGAUTIONS 2 iR LP enr iue Riese ERN Safety 1 MAINTENANCE PRECAUTIONS Safety 1 UNIT LABEL IDENTIFICATION Safety 1 SPECIFIC WARNING AND CAUTION STATEMENTS S
215. rs Sheet 1 of 2 T 285 7 12 FOR UNITS WITHOUT ELECTRONIC CR ONLY FOR CR WIRING SEE FIGURE 7 7 f MB DISPLAY MODULE OD CCOCCCQOOCCOQCAQ lt bud bid 414446 CON 9 1 lt 17 5 lt 12 6 M89 OQ 5 SIDE COMMUNICATIONS CONTROLLER GYG HA 9 0 amp E INTERFACE matic MODULE MBI TY Cay wes MAINS POWER 3 12 4 125 FUSE RRS COMBINATION XG 8 354 e QUAS D 2 AT SENSOR ONLY MBA IF EQUIPPED 2 WE m
216. rvice valves and drawing a deep vacuum with the vacuum pump and gauge valves open Shut off the pump and check to see if the vacuum holds Repair leaks if necessary d Midseat the refrigerant system service valves Open the vacuum pump and electronic vacuum gauge valves if they are not already open Start the vacuum pump Evacuate unit until the electronic vac uum gauge indicates 2000 microns Close the elec tronic vacuum gauge and vacuum pump valves Shut off the vacuum pump Wait a few minutes to be sure the vacuum holds f Break the vacuum with clean dry refrigerant 134a gas Raise system pressure to approximately 0 2 kg cm 2 psig monitoring it with the compound gauge g Remove refrigerant using a refrigerant recovery sys tem h Repeat steps e and f one time T 285 6 Liquid Service Valve 2 Discharge Service 7 Vacuum Pump Valve 8 Electronic Vacuum 3 Compressor Gauge 4 Suction Service Valve 9 Manifold Gauge Set 5 Receiver or Water 10 Refrigerant Cylinder Cooled Condenser Figure 6 5 Compressor Service Connections Removethe coppertubing and change the filter drier Evacuate unit to 500 microns Close the electronic vacuum gauge and vacuum pump valves Shut offthe vacuum pump Wait five minutes to see if vacuum holds This procedure checks for residual moisture and or leaks With a vacuum still in the unit the refrigerant c
217. s and valves Afterthey have been removed free the valve plate from the cylinder deck by using the outside discharge valve hold down caps crew as a jack screw through the tapped hole of the valve plate Remove the valve plate gasket Turn the compressor on its side and remove the bot tom plate oil suction screen and screen hold down plate Inspectthe screen for holes or an accumulation of dirt The screen can be cleaned with a suitable sol vent Match mark each connecting rod cap see Figure 6 8 and connecting rod for correct reassembly Remove the bolts and connecting rod caps Push the piston rods up as far as they will go without having the piston rings extend above the cylinders CAUTION The copper tube which connects to the oil suction strainer extends out the bottom with the bottom plate removed Take pre cautions to avoid bending or breaking it while changing crankcase positions If necessary remove the oil return check valve See Figure 6 8 Inspect it for proper operation flow in one direction only Replace the assembly with a new unit if check valve operation is impaired To remove the oil pump see Figure 6 9 remove eight capscrews oil pump bearing head assembly gasket and thrust washer 1 2 1 2 3 4 5 6 Set screw must be removed Oil Pump amp Bearing 3 Oil Pickup Tube Head 4 Oil Inlet Port Thrust Washer 5 Oil Pump Inlet Figure 6 9 Oil Pump and Bearing Head NOTE I
218. scaling techniques will be highly useful Summary of Procedure a Drain water from condenser tubing circuit Clean water tubes with Oakite No 22 to remove mud and slime b Flush c De scale water tubes with Oakite No 32 to remove scale Flush Neutralize Flush Putunit 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 accompa nied by slime a thorough cleaning is necessary before de scaling process can be accomplished 2 Toremove 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 circu late through the tubes until all slime and mud has been removed 3 After cleaning flush tubes thoroughly with fresh clean water gt 4 Prepare 15 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 ofthe acid Oakite No 32 to 2 8 liters 3 U S quarts of water WARNING Oakite No 32 is an acid 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 WARNING Wear rubber gloves and wash the solution fromthe skin immediately if accidental con tact occurs Do not allow the solution to splash onto concret
219. scharge resistors 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 2 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 are its ability to locate capacitors that have failed to hold their microfarad ratings or those that are breaking down internally during operation It is also useful in identifying capacitors when their microfarad rating marks have become unreadable T 285 Table 6 7 Wear Limits For Compressors MAIN BEARING Main Bearing Diameter 1 6268 41 3207 0020 0 0508 Main Bearing Journal Diameter 1 6233 41 2318 0020 0 0508 PUMP END Main Bearing Diameter 1 3760 34 9504 0020 0 0508 Main Bearing Journal Diameter 1 3735 34 8869 0020 0 0508 CONNECTING ROD 1 3768 34 9707 0020 0 0508 Piston Pin Bearing 0 6878 17 4701 0010 0 0254 CRANKPIN DIAMETER 34 8869 0025 0 0635 Throw 1 072 27 2288 27 1780 THRUST WASHER Thickness 0 154 3 9116 03 8608 0250 0 6350 CYLINDERS Bore 50 8254 Piston Diameter 50 4444 Piston Pin Diameter 17 4574 Piston Ring Gap 00 3302 00 1270 Piston Ring Side Clearance 00 0508 00 0254 Table 6 8 Compressor Torque Values SIZE TORQUE RANGE DIAMETER THREADS inches PER INCH 1 16 27 pipe 1
220. sh 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 T bar and with 15mm 6 inch H2O external static above free blow 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 c Adjustment The air slide is supplied with two adjustable air control discs The fresh air makeup can be adjusted for 15 35 50 and 75 cubic meters per hour CFM The air flow has been established at 60 Hz power and a 2 1 2 inch T bar with 15 mm 0 6 inch H20 external static above free blow d Air Sampling for Carbon Dioxide COz Level Loosen hex nuts and move the cover until the arrow on the coveris aligned with the atmosphere sampling port label Tighten the hex nuts and attach a 3 8 hose to the sampling port If the internal atmosphere content has reached an unacceptable level the operator may adjust the disc opening to meet the required air flow volume to ventilate the container 4 4 CONNECT WATER COOLED CONDENSER 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 If water cooled operation is desired connect in accordance with the following subparagraphs 4 4 4 Water Cooled Condenser with Water Pres sure Switch a Connect the water
221. sing the plug connector marked that is con nected to the back of the controller locate the sensor wires RRS RTS SRS STS AMBS DTS CPDS CPSS as required Follow those wires to the con nector and using the pins of the plug measure the resistance Values are provided in Table 6 1 6 b Table 6 1 Sensor Temperature Resistance Chart Temperature Fahrenheit Resistance Ohms Temperature Centigrade RRS RTS SRS and STS 9 3 ze 10 000 50 AMBS DTS 32 650 1720 10 000 450 Dueto the variations and inaccuracies in ohmmeters thermometers or other test equipment a reading within 296 of the chart value would indicate a good sensor If a sensor is defective the resistance read ing will usually be much higher or lower than the resis tance values given 22 2 Sensor Replacement Turn unit power OFF and disconnect power supply For two wire sensors cut cable 5 cm 2 inches from shoulder of defective sensor and discard the defec tive sensor only For three wire sensors cut at 23 cm 9 inches Slide the cap and grommet off well mounted sensor and save for possible reuse Do not cut the grommet If required prepare the replacement sensor by cut ting sensor wire s back 40 mm 1 1 2 inch Forthree wire sensors the black wire should be cut at the middle length and the red white wire cutto the shorter length See Figure 6 27 Sensor 40 mm 1 1 2 inch 6 3 mm
222. supply line to the inlet side of con denser and the discharge line to the outlet side of the condenser See Figure 2 5 Maintain flow rate of 11 to 26 liters per minute 3 to 7 gallons per minute The water pressure switch will open to de energize the condenser fan relay The condenser fan motor will stop and will remain stopped until the water pressure switch closes c To shiftto air cooled condenser operation 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 pres sure switch closes 4 4 2 Water Cooled Condenser with Condenser Fan Switch a Connect the water supply line to the inlet side of con denser and the discharge line to the outlet side of the condenser See Figure 2 5 b Maintain a flow rate of 11 to 26 Ipm 3 to 7 gpm c Set the condenser fan switch to position O This will de energize the condenser fan relay The condenser fan motor will stop and remain stopped until the CFS switch is set to position I CAUTION When condenser water flow is below 11 lpm 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 d To shift to air cooled condenser operation stop the unit set the CFS switch to position I and restart the unit Disconnect the water lines to the water cooled condenser 4 5 CONNECT REMO
223. t power for seven continuous days or longer a trip start will auto matically be generated on the next AC power up Shows the current status of the optional battery pack dC31 Battery Test PASS Battery pack is fully charged FAIL Battery pack voltage is low dC32 Current time on the real time clock RTC in the DataCORDER dC33 Date Month Day Current date month and day on the RTC in the DataCORDER dC34 Current year on the RTC in the DataCORDER dC35 Cargo Probe 4 Current calibration value for the Cargo Probe This value is an input via the Calibration interrogation program T 285 3 24 Table 3 9 DataCORDER Pre Trip Result Records Test TITLE DATA Pass Fail Skip Result Change in current for Phase A B and C Pass Fail Skip Result Change in currents for Phase A B and C Pass Fail Skip Result Water pressure switch WPS Open Closed Condenser FariOn Change in currents for Phase A B and C Condenser Fan Off Pass Fail Skip Result Change in currents for Phase A B and C Suction Modulation Valve QL Open and Closed Pass Fail Skip Result Is current or pressure limit in effect Not Applicable Not Applicable 7 Pass Fail Skip Result AMBS if equipped High Pressure Switch Closed Input values that component opens Pass Fail Skip Result STS DPT or if equipped High Pressure Switch Open Input values that component closes 8 0 Perishable Heat Pass Fail Skip Res
224. t when it is considered closed and preventing or terminating defrost when it is considered open actual temperatures used to make the open or closed determinations are dependent on the type of defrost request made and the operator setting of configuration variable CnF41 Configuration variable CnF41may be factory set at the default value of 25 6 C 78 F or a lower value of 18 C 64 F When request for defrost is made by the use of the Manual Defrost Switch or Communications the unit will enter defrost when the reading at the Defrost Temperature Sensor is at or below the CnF41 setting Defrost will terminate when the Defrost Sensor Temperature reading rises above the CnF41 setting When a request for defrost is made by probe check the unit will enter defrost when the Defrost Temperature Sensor reading is at or below 25 6 C 78 F The unit will terminate defrost when the Defrost Temperature Sensor reading rises above 25 6 C 78 F T 285 When arequest for defrost is made by demand defrost theunit will enter defrost when the reading at the Defrost Temperature Sensor is at or below 18 64 4 F Defrost will terminate when the Defrost Sensor Temperature reading rises above the CnF41 setting When a defrost has terminated the defrost interval timer will begin counting when the reading at the Defrost Temperature Sensor is at or below 10 C 50 F Once the timer has counted the required time the unit will en
225. ta from the DataCORDER and then upload it to a personal computer The Data Reader has the ability to Store multiple data files Refer to Data Retrieval manual 62 10629 for a detailed explanation of the DataReader TRANSICOLD DataReader Figure 3 6 Data Reader b DataLine The DataLINE software for a personal computer is supplied on both floppy disks and CD This software allows interrogation configuration variable assignment screen view of the data hard copy report generation cold treatment probe calibration and file management Refer to Data Retrieval manual 62 10629 for a more detailed explanation of the DataLINE interrogation software The DataLine manual may be found on the net at www contaner carrier com c Communications Interface Module The communications interface module is a slave module which allows communication with a master central monitoring station The module will respond to communication and return information over the main power line With a remote monitoring unit installed all functions and selectable features that are accessible at the unit may be performed at the master station Retrieval of all DataCORDER reports may also be performed Refer to the master system technical manual for further information 3 6 11 USDA Cold Treatment Sustained cold temperature has been employed as an effective postharvest method for the control of Mediter
226. ted with a condenser fan switch the condenser fan will be off when the switch is placed in the position The condenser fan will be on when the switch is placed inthe position EVAPORATOR d Ln le HEAT EXCHANGER CONDENSER PRESSURE REGULATOR PRESSURE TRANSDUCER SERVICE VALVE 4 MODULATING VALVE QUENCH VALVE PRESSURE TRANSDUCER FUSIBLE PLUG SIGHT GLASS Di h SERVICE VALVE Discharge ee Circuit with Receiver EVAPORATOR CONDENSER PRESSURE TRANSDUCER WATER COOLED CONDENSER QUENCH VALVE FILTER DRIER Circuit with Water Cooled Condenser Figure 2 7 Refrigeration Circuit Schematic 2 11 T 285 SECTION 3 MICROPROCESSOR 3 1 TEMPERATURE CONTROL MICROPRO CESSOR SYSTEM The temperature control Micro Link 2i microprocessor System see Figure 3 1 consists of a key pad display module control module controller and interconnecting wiring The controller houses the temperature control software and the DataCORDER Software The temperature control software functions to operate the unit components as required to provide the desired cargo temperature and humidity The DataCORDER software functions to record unit operating parameters and cargo temperature parameters for future retrieval Coverage of the temperature control software begins with paragraph 3 2 Coverage of the DataCORDER Software is provided in paragraph 3 6 The key pad a
227. temperature sensors The sensor readings may be viewed on the controller display 1 3 5 Pressure Readout The unit may be fitted with suction and discharge pressure gauges or suction and discharge transducers or no pressure readout The transducer readings may be viewed on the controller display 1 3 6 USDA The unit may be supplied with fittings for additional temperature probes which allow recording of USDA Cold Treatment data by the integral DataCORDER function of the Micro Link refrigeration controller 1 3 7 Interrogator Units that use the DataCORDER function are fitted with interrogator receptacles for connection of equipment to download the recorded data Two receptacles may be fitted one accessible from the front of the container and the other mounted inside the container with the USDA receptacles 1 3 8 Remote Monitoring The unit may be fitted with a remote monitoring receptacle This item allows connection of remote indicators for COOL DEFROST and IN RANGE Unless otherwise indicated the receptacle is mounted at the control box location 1 3 9 Communications The unit may be fitted with a communications interface module The communications interface module is a slave module which allows communication with a master central monitoring station The module will respond to communication and return information over the main power line Refer to the ship master system technical manual for further information 1 3 10
228. tential hazard or unsafe practice which could result in minor personal injury product or property damage SPECIFIC WARNING AND CAUTION STATEMENTS The statements listed below are applicable to the refrigeration unit and appear elsewhere in this manual These recommended precautions 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 The unit may cycle the fans and compressor unexpectedly as control requirements dictate WARNING Do not attempt to remove power plug s before turning OFF start stop switch ST unit circuit break er s and external power source WARNING Make sure the power plugs are clean and dry before connecting to any power receptacle Safety 1 T 285 SPECIFIC WARNING AND CAUTION STATEMENTS Continued WARNING Make sure that the unit circuit breaker s CB 1 amp CB 2 and the START STOP switch ST are in the OFF position before connecting to any electrical power source WARNING Never use air for leak testing It has been determined that pressurized mixtures of refrigerant and air can undergo combustion when exposed to an ignition source WARNING Make sure power to the unit is OFF and power plug disconnected before replacing the compressor WARNING Before disassembly of any external compressor component make sure to relieve possible internal pressure by loosening the bolts and t
229. ter defrost if the Defrost Temperature Sensor is at or below 25 6 C 78 F Defrost will terminate when the Defrost Sensor Temperature reading rises above the CnF41 setting When the unit enters defrost the controller opens contacts TC TN and TE or TV to de energize the compressor condenser fan and evaporator fans See Figure 4 8 The COOL light is also de energized The controller then closes TH to supply power to the heaters The defrost light is illuminated When the defrost temperature sensor reading rises to the applicable Defrost Termination Thermostat opening point the de icing operation is terminated If defrost does not terminate correctly and temperature reaches the set point of the heat termination thermostat HTT the thermostat will open to de energize the heaters If termination does not occur within 2 0 hours the controller will terminate defrost An alarm will be given of a possible DTS failure If probe check controller function code CnF31 is configured to special the unit will proceed to the next operation Snap freeze or terminate defrost If the code is configured to standard the unit will perform a probe check The purpose of the probe check is to detect malfunctions or drift in the sensed temperature that is too small to be detected by the normal sensor out of range tests The system will run for eight minutes in this condition At the end of the eight minutes probe alarms will be set or cleared
230. th function code Cd36 is used in conjunction with bulb mode and dehumidification If bulb mode is active this code allows the user to change the defrost termination thermostat settings If bulb mode is deactivated the DTS set ting returns to the default Defrost Termination Cd37 Temperature Setting Bulb Mode 3 15 T 285 Table 3 5 Controller Function Codes Sheet 4 of 4 Display Only Functions Continued Code Cd38 will display the current secondary supply temperature sensor reading Secondary Supply for units configured for four probes If the unit is configured with a DataCORDER Temperature Sensor Cd38 will display If the DataCORDER suffers a failure AL55 Cd38 will display the supply recorder sensor reading Code Cd39 will display the current secondary return temperature sensor reading Secondary Return for units configured for four probes If the unit is configured with a DataCORDER Temperature Sensor Cd39 will display If the DataCORDER suffers a failure AL55 Cd39 will display the return recorder sensor reading Container Identifica C440 is configured at commissioning to read a valid container identification Cd40 tion Number number The reading will not display alpha characters only the numeric portion of the number will display Cd Not Applicable Scroll Units Only The following Configuration Codes 43 45 highlighted gray apply to Software Revisions 5123 and 5124 ONLY This code
231. the controller to open the suction modulating valve to match the increased heat load while still holding the supply air temperature very close to the set point Opening the modulating valve reduces the temperature of the evaporator coil surface which increases the rate at which water is condensed from the passing air Removing water from the air reduces the relative humidity When the relative humidity sensed is 2 below the set point the controller de energizes the heat relay The controller will continue to cycle heating to maintain relative humidity below the selected set point If the mode is terminated by a condition other than the humidity sensor e g an out of range or compressor shutdown condition the heat relay is de energized immediately Two timers are activated in the dehumidification mode to prevent rapid cycling and consequent contactor wear They are 1 Heater debounce timer three minutes 2 Out of range timer five minutes The heater debounce timer is started whenever the heater contactor status is changed The heat contactor remains energized or de energized for at least three minutes even if the set point criteria are satisfied The out of range timer is started to maintain heater operation during a temporary out of range condition If the supply air temperature remains outside of the user selected in range setting for more than five minutes the heaters will be de energized to allow the system to rec
232. the damaged area and the repair must keep the box water tight Information on repair kits and repair procedures for each type of damage is provided in the following paragraphs Ambient temperature must be above 7 C 45 F for proper curing of epoxy repairs 6 27 2 Cracks Cracks in the control box are repaired using a fiberglass patch over the damaged area Materials required are included in the Fiberglass Patch Kit supplied with Crack Repair Kit Carrier Transicold part number 76 00724 00SV see Table 6 3 a The surface must be clean and dry Roughen the sur face with sandpaper to ensure a good bond b Cut the fiberglass cloth to allow a 25mm 1 inch overlap around the area to be repaired c Stretch and position the cloth over the area to be re paired and secure it with masking tape d Make up sufficient epoxy glue to cover the cloth by mixing equal parts of resin and hardener Saturate the cloth with the epoxy glue spreading evenly e Remove the tape and overlap the edge of the cloth approximately 6 to 12 mm 1 4 to 1 2 with glue f Epoxy will dry in 45 60 minutes When completely cured 12 hours use sandpaper to smooth edges of the patch 6 27 3 Chips And Holes Chips and holes in the control box are repaired using a piece of aluminum or stainless steel to cover the damaged area The material can be cut to suit and riveted in place An adhesive sealant must be used to make the repair watertight The adh
233. the inside of the element housing should never 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 NOTE The Controller DataCORDER air temperature sensor is located adjacent to the temperature recorder bulb and can be used to calibrate the recorder 6 24 1 Checking The Temperature Recorder 6 25 The temperature recorder may be fitted with a thermistor probe Simpson accessory 344 attached at the recorder bulb The thermistor wiring is brought from the bulb location to a receptacle located in the chart platen of the recorder If a thermistor is provided the recorder chart reading may be checked using a temperature tester as described in step a thermistor is not fitted check the recorder chart reading using an ice and water bath as described in step b Table 6 2 Temperature Resistance Chart RESISTANCE TEMPERATURE Ohms 12561 00 10579 70 8944 17 7588 89 5520 32 4731 71 4068 68 3509 36 3310 57 3035 99 2634 10 2291 85 1999 52 1749 11 1534 00 1348 72 1050 14 929 87 825 21 733 93 654 12 584 19 522 79 a Check With Temperature Tester The bulb mounted thermistor may be read using a Simpson Meter P N 07 00013 or Robinair Thermistor Temperature Tester Model 12860 by inserting one end of the lead into the receptacle provided on the temperature recorder chart platen and the other end in the meter Be sure
234. the keypad or manual defrost switch if equipped NOTE The Manual Defrost Interval key can be used to initiate a manual defrost Minimum Software release version 5126 is required in order for to use this function T 285 Manual Defrost Interval key operation Depressing and holding the Defrost Interval key for five b seconds will initiate defrost If the defrost in terval key is released in less than five 5 seconds defrost interval code 27 shall be displayed 2 The user sends a defrost request by communica tions 3 The defrost interval timer controller function code Cd27 reaches the defrost interval set by the user 4 Thecontroller probe diagnostic logic determines that a probe check is necessary based on the tempera ture values currently reported by the supply and re turn probes 5 The controller Demand Defrost configuration vari able CnF40 is set to and the unit has been pull down operation for over 2 5 hours without reach ing set point ENERGIZED DE ENERGIZED FOR FULL DIAGRAM AND LEGEND SEE SECTION 7 POWER TO CONTROLLER CONTROL TRANSFORMER SIGNAL TO CONTROLLER 1 1 2 DTS SIGNAL TO CONTROLLER 2 5 Figure 4 8 Defrost Processing of a defrost request is controlled by the Defrost Termination Thermostat Defrost Termination Thermostat is not a physical component It is a software point that acts as a thermostat allowing defros
235. the needle will swing to zero resistance position and stay there 2 Capacitor analyzer The function of the analyzer is to read the microfarad value of a capacitor and to detect insulation breakdown T 285 under load conditions The important advantages of a analyzer are its ability to locate capacitors that have failed to hold their microfarad ratings or those that are breaking down internally during operation It is also useful in identifying capacitors when their microfarad rating marks have become unreadable 6 18 SUCTION MODULATION VALVE On start up of the unit the valve will reset to a known open position This is accomplished by assuming the valve was fully open driving it fully closed resetting the percentage open to zero then opening to a known 2196 staging position 1 Suction Modulation Valve SMV 2 Stepper Drive SD Figure 6 24 Suction Modulation Valve SMV 6 18 1 Precheck Procedure a Check unit for abnormal operation b Check charge If refrigerant is low repair as required and again check operation C If sufficient capacity cannot be maintained or unit is tripping excessively on high pressure switch HPS in high ambients check coils and clean if required d If capacity or control cannot be maintained turn unit OFF then back ON This will reset the valve in the event the controller lost communication with the valve and may correct the problem NOTE Carefully listen to the valve During
236. the programming card for Operational Soft ware into the programming software port See Figure 6 26 3 Turn unit ON via start stop switch ST 4 The Display module will alternate back and forth between the messages XXXX and Press EntR If a defective card is being used the Display will blink the message bAd CArd Turn start stop Switch OFF and remove the card 5 Press the ENTER key on the keypad 6 The Display will show the message Pro SoFt This message will last for up to one minute The Display module will read Pro donE when the software loading has loaded If a problem occurs while loading the software the Display will blink the message Pro FAIL or bad 12V Turn start stop Switch OFF and remove the card 8 Turn unit OFF via start stop switch ST 9 Remove the programming card from the program ming software port and return the unit to normal op eration by placing the start stop switch in the ON position Procedure for loading Configuration Software 1 Turn unit OFF using start stop switch ST Insertthe programming card for Configuration Soft ware into the programming software port See Figure 6 26 Turn unit ON using start stop switch ST 4 The Display module will show 511 on the left LCD display and on the right The will be the dash number for a given unit model number use the UP or DOWN ARROW key to scroll through the listto obtain
237. the range specified Requirements The unit must be equipped with a low speed evaporator fan as determined by the Evaporator Fan speed select configuration variable Low Speed Evapo NOTE tator ans If the unit is configured for single evaporator fan operation Pre Trip tests P3 0 P3 1 P4 0 and P4 1 will fail immediately if Controller alarm codes AL11 or AL12 are active at the start of testing Setup The high speed evaporator fans will be turned on for 10 seconds then off for two seconds then the low speed evaporator fans are turned on A current draw test is done after 60 seconds Pass Fail Criteria Passes if change in current draw is within the range speci fied Fails if AL11 or AL12 activates during test Setup The low speed Evaporator Fan is turned off a current draw test is done Low Speed Evapo after 10 seconds rator Fan Motors Off Pass Fail Criteria Passes if change in current draw is within the range speci fied Fails if AL11 or AL12 activates during test Low Speed Evapo rator Fan Motors On Setup The high speed Evaporator Fan is turned on a current draw test is done High Speed Evapo after 60 seconds rator Fan Motors On Pass Fail Criteria Passes if change in current draw is within the range speci fied Fails if AL11 or AL12 activates during test Setup The high speed Evaporator Fan is turned off a current draw test is done High Speed Evapo after 10 seconds rator Fan Motors Off Pass Fail Criter
238. the user to check if the water pressure switch WP contact is open or closed TP4 This test point enables the user to check if the internal protector for the condenser fan motor IP CM is open or closed TP5 This test point enables the user to check if the internal protectors for the evaporator fan motors IP EM1 or 2 are open or closed TP6 This test point enables the user to check if the controller water tank heater relay TQ is open or closed TP7 This test point is not used in this application TP8 This test point is not applicable to the units covered herein 9 This test point is the chassis unit frame ground connection TP 10 This test point enables the user to check if the heat termination thermostat HTT contact is open or closed 6 21 3 Controller Programming Procedure To load new software into the module the programming card is inserted into the programming software port CAUTION The unit must be OFF whenever a program ming card is inserted or removed from the controller programming port CAUTION All 69NT40 511 3XX units must use software revision 5108 or higher to enable stepper motor Optional features may T 285 require higher software revision levels to enable functionality NOTE The metal door on the programming card must be facing to the left when inserting Procedure for loading Operational Software 1 Turn unit OFF via start stop switch ST Insert
239. through P10 are included with Auto2 only High Pressure Switch Closed Setup When the unit is running the condenser fan is de energized and a 15 minute timer is started The right display shows discharge pressure if the unit is equipped with a discharge pressure transducer DPT If no DPT is installed the condenser pressure transducer CPT reading will be displayed Pass Fail Criteria The test fails if high pressure switch fails to open in 15 min utes 3 21 T 285 Table 3 7 Temperature Controller Test Codes Sheet 3 of 4 Note this test is skipped if the unit does NOT have A compressor discharge sensor CPDS A discharge pressure transducer DPT Condenser pressure transducer CPT In addition this test is skipped if The sensed ambient temperature is less than 7 C 45 F The return air temperature is less than 17 8 0 F The water pressure switch WP is open indicatingthat the unit is operating with a water cooled condenser Pass Fail Criteria Under conditions of the above NOTE the test immediately fails if the following inputs are sensed to be invalid High Pressure Compressor discharge sensor CPDS Switch Closed i Continued Discharge pressure transducer DPT Condenser pressure transducer CPT OR if any one of the following inputs are sensed to be invalid Return temperature sensor RTS Ambient sensor AMBS In addition the test will fail if The high pr
240. tion Refer to paragraph 4 11 for emergency modes of operation RISING TEMPERATURE 2 5 4 5 F 1 5 2 7 MODULATING COOLING 1 1 8 F MODULATING COOLING 0 5 C 0 9 F 20 C SET POINT PON CN NE AIR CIRCULATION HEATING 0 20 0 5 0 9 1 1 8 1 5 2 7 F Figure 4 3 Controller Operation Perishable Mode T 285 FALLING TEMPERATURE RISING TEMPERATURE 1 5 2 7 F COOLING 1 1 8 COOLING 0 5 C 0 9 F SET POINT 0 20 C 0 5 C 0 9 F CIRCULATION 1 C 1 8 F CIRCULATION 1 5 2 7 F Figure 4 4 Controller Operation Frozen Mode ENERGIZED DE ENERGIZED FOR FULL DIAGRAM AND LEGEND SEE SECTION 7 POWER TO CONTROLLER CONTROL TRANSFORMER SIGNAL TO CONTROLLER 2 wps 1 CONTROLLER NOTE HIGH SPEED EVAPORATOR FAN SHOWN FOR LOW SPEED CONTACT TE IS DE ENERGIZED AND CONTACT TV IS ENERGIZED Figure 4 5 Perishable Mode Cooling 4 10 1 Sequence Of operation Perishable Mode Cooling NOTE In the Conventional Perishable Mode of opera tion the evaporator motors run in high speed In the Economy Perishable Mode the fan speed is varied T 285 NOTE In low temperature ambients the condenser fan will be cycled by the controller to maintain prop er condensing pressure a With supply air temperature above set point and de creasing the unit will be c
241. tion of the sensor against the the side of the mounting clamp T 285 6 22 c Sensor DTS The DTS sensor must have insulating material placed completely over the sensor to insure the coil metal temperature is sensed Sensor Wires and Grommet Evaporator Back Panel Evaporator Grille Combination Sensor Mount Figure 6 30 Return Sensor Positioning 6 23 ELECTRONIC PARTLOW TEMPERATURE RECORDER The microprocessor based temperature recorder is designed to interface with the DataCORDER to log temperature with time The electronic recorder will automatically record the return air supply air or both based on the setting of temperature controller configuration code CnF37 refer to Table 3 4 The recorder reads and records data from the Controller in present time under normal operating conditions If using the Electronic Partlow Recorder CTD P N 12 00464 00 The recorder will STOP when the power is OFF and the pen tip will remain at the last recorded temperature on the chart When power is applied and the power off period is less than three days the pen tip will move to 25 C 77 F the chart will advance to present time and the pen tip will move to the currently recorded temperature If the power has been OFF for more than three days the recorder will NOT re synchronize the chart will not advance to present time the pen tip will move to the currently recorded temperature and the recorder will r
242. to light indicates an open on that leg which indicates a poor connection or an open coil Repair or replace as required to achieve proper operation 3 Restart unit set the step rateto 200 PPS on SMA 12 forthe valve and close stepper valve while watching the suction gauge Within one minute the suction pressure will go into a vacuum This is an indication that the valve is moving 4 f no change in suction pressure is detected check for resistance refer to step 6 18 2 and check con nections for proper continuity and retest If the valve is functioning and all connections and motor resist ance are good check the drive module Refer to step 6 18 3 5 If the valve is determined as faulty after completing the above steps perform a low side pump down Re move valve powerhead assembly and replace with a NEW valve powerhead assembly torque nut to 35 ft Ib evacuate low side and open all service valves CAUTION DO NOT disassemble piston from NEW suc tion modulating valve powerhead assem bly Doing so may result in damage to pis ton 6 18 3 Checking The Drive Module a Turn unit OFF b Disconnect the four pin connector to the SMV c With voltmeter set to read 24 volts AC attach the pos itive lead to the drive module outlet pin wire 1A of the four pin connector and the negative lead to the B pin wire 1B d Turn ON unit and watch the volt meter After a short cy the reading should rise to approximately
243. to lightly coat with oil Insert cage and power assembly and bolts Tighten bolts equally Fasten equalizer flare nut to expansion valve 2 Leak check the unit per paragraph 6 5 Evacuate and dehydrate unit per section 6 6 Add refrigerant charge per section 6 7 3 Clean suction line with sandpaper before installing bulb to ensure proper heat transfer Strap thermal bulb to suction line making sure bulb is placed firmly into the indentation of the suction line See Figure 6 19 for bulb placement 4 Check superheat Refer to paragraph 6 14 2 step 6 14 1 Container box temperature should be at 18 C O F 6 15 EVAPORATOR COIL AND HEATER ASSEMBLY The evaporator section including the coil should be cleaned regularly The preferred cleaning fluid is fresh water or steam Another recommended cleaner is Oakite 202 or similar following manufacturer s instructions The two drain pan hoses are routed behind the condenser fan motor and compressor The drain pan line s must be open to ensure adequate drainage 6 15 1 Evaporator Coil Replacement a Pump unit down Refer to paragraph 6 4 b With power OFF and power plug removed remove the screws securing the panel covering the evapora tor section upper panel c Disconnect the defrost heater wiring d Disconnect the defrost temperature sensor see Fig ure Figure 2 2 from the coil e Remove middle coil support f Remove the mounting hardware from the coil g Unso
244. tor inputs 2 thermistor inputs supply amp return 1 cargo probe thermistor input 2 sensors dCF02 2 2 thermistor inputs supply amp return 2 thermistor inputs supply amp return 9 sensors dCF02 9 Not Applicable 1 cargo probe thermistor input 1 humidity input 3 USDA thermistor inputs 3 C A inputs NOT APPLICABLE 5 ViewD ata Raw Data Report 1 Reports Window l x zdal 5 m Raw Data Report for 1234567 May 31 2001 to Jun 04 2001 System Configuration at the Time of Interrogation Interrogated On Sept 05 2001 Extracted by DataLine Rev 1 0 0 Controller Software 5120 Controller Serial 04163552 Bill of Lading 1 Origin Origin Date Destination Discharge Date Comment DataLine Tool Probe Calibration Readings USDA1 0 0 USDA2 0 0 USDA3 0 0 Carge 9 Temperature Units Centigrade May 31 2001 Setpoint 1 66 Container Serial 041892 9 Sensors Logged at 15 Minute Interval Sensor Format Resolution Fi Help 234557aadcs ML2i ABC1234567 163552 0 7 09 05 2001 A Start s ViewD ata Raw Dat MictosoftWord L 2 Y 1 43PM a w EER pa File Reports Toggle window l xl saln F Container ABC1 234567 Serial 04163552 _ SetPoint Sup mRethir 2 T CACO2 27 00 hmmm mim SARA W IIA HL IAEA UAE HE EUH PI
245. ture before dismantling This avoids internal condensation which puts moisture in the system f After repairs have been made be sure to perform a refrigerant leak check refer to paragraph 6 5 and evacuate and dehydrate the low side refer to para graph 6 6 g Check refrigerant charge refer to paragraph 6 7 6 5 REFRIGERANT LEAK CHECKING WARNING Never use air for leak testing It has been determined that pressurized air rich mix tures of refrigerants and air can undergo combustion when exposed to an ignition source The recommended procedure for finding leaks in a system is with a R 134a electronic leak detector Testing joints with soapsuds is satisfactory only for locating large leaks b Ifthe system is without refrigerant charge the system with refrigerant 134a to build up pressure between 2 1 to 3 5 kg cm 30 to 50 psig Remove refrigerant cyl inder and leak check all connections NOTE Only refrigerant 134a should be used to pres surize the system Any other gas or vapor will contaminate the system which will require additional purging and evacuation of the sys tem c If required remove refrigerant using a refrigerant recovery system and repair any leaks d dehydrate the unit Refer to paragraph 6 6 e Charge unit per paragraph 6 7 6 6 EVACUATION AND DEHYDRATION 6 6 1 General Moisture is the deadly enemy of refrigeration systems The presence of moisture in a refrigeration s
246. ult STS time it takes to heat to 16 C 60 F Perishable Pull Down Pass Fail Skip Result STS time it takes to pull down to 0 C 32 F Pass Fail Skip Result Averaged DataCORDER supply temperature SRS over last recording interval Pass Fail Skip Result DTS reading at end of test line voltage line Frozen Mode Set up Pass Fail Skip Result STS time unit is in heat Frozen Mode Pull Down Pass Fail Skip Result STS time to pull down unit to 17 8 C 0 F Pass Fail Skip Result Averaged DataCORDER return temperature Frozen Mode Maintain RRS over last recording interval 24 59 pss 52 1 0 1 1 2 0 2 1 3 1 4 0 4 1 5 0 5 1 5 2 6 1 3 25 285 Table 3 10 DataCORDER Alarm Indications To Access Press ALT MODE key TITLE DESCRIPTION The supply recorder sensor reading is outside of the range of 50 C to 70 C 58 F to 158 F or the probe check logic has determined there is dAL7O Recorder Supply Tem a fault with this Sensor perature Out of Range NOTE The P5 Pre Trip test must be run to inactivate the alarm The return recorder sensor reading is outside of the range of 50 C to 70 C 58 F to 158 F or the probe check logic has determined there is dALTi Recorder Return Tem fault with this sensor perature Out of Range NOTE The P5 Pre Trip test must be run to inactivate the alarm dAL72 74 USDA Temperatures The USDA probe temperature readi
247. valves on the manifold gauge set and allow the pressure in the manifold gauge set to be drawn down to suction pressure This returns any liquid that may be in the high side hose to the system 3 Backseat the suction service valve Backseat both field service couplings and frontseat both manifold set valves Remove the couplings from the service ports 4 Install both service valve stem caps and service port caps finger tight only 6 4 PUMPING THE UNIT DOWN To service the filter drier moisture liquid indicator expansion valve suction modulation valve quench valve or evaporator coil pump the refrigerant into the high side as follows a Attach manifold gauge set to compressor service valves Refer to paragraph 6 3 b Start the unit and run in a cooling mode for 10 to 15 minutes Frontseat the liquid line service valve Place start stop switch inthe OFF position when the suction reaches a positive pressure of 0 1 kg cm 1 0 psig c Frontseat the suction service valve The refrigerant will be trapped between the compressor suction ser vice valve and the liquid line valve d Before opening up any part of the system a slight positive pressure should be indicated on the pressure gauge If a vacuum is indicated emit refrigerant by cracking the liquid line valve momentarily to build up a slight positive pressure e When opening up the refrigerant system certain parts may frost Allow the part to warm to ambient tempera
248. ware 3 3 3 8 Configuration Variables 3 12 Controller 3 3 6 18 Controller Software 3 3 Crankcase Heater 4 4 D DataCORDER 3 7 3 10 4 3 DataCORDER Software 3 7 DataReader 3 10 Defrost Interval 3 4 Defrost Mode 4 7 Display Module 3 2 Drive Module 6 17 E Emergency Bypass 4 9 Emergency Defrost 4 9 INDEX Evacuation 6 3 Evaporator 6 14 Evaporator Fan 1 3 3 4 6 15 Evaporator Section 2 2 Expansion Valve 6 12 F Failure Action 3 4 Filter Drier 6 12 Fresh Air Makeup 2 1 4 1 Frozen Mode 4 7 Frozen Mode Conventional 3 6 Frozen Mode Economy 3 6 Function Code 3 13 3 24 G General Description 2 1 Generator Protection 3 4 H Heat Lockout 3 4 Heater 6 14 Heating Mode 4 7 High Pressure Switch 6 10 Inspection 4 1 4 3 Introduction 1 1 K Key Pad 3 2 L Leak Checking 6 3 Logging Interval 3 10 Index 1 T 285 Manifold Gauge Set 6 1 Microporcessor System 3 1 Modes Of Operation 3 3 Motor Current 6 36 O Oil Level 6 9 Operational Software 3 3 3 7 P Painted Surfaces 6 29 Perishable Mode 4 6 Perishable Mode Conventional 3 4 Perishable Mode Dehumidification 3 5 Perishable Mode Economy 3 5 Power 4 1 Pre Trip 3 7 3 10 3 20 3 25 4 3 Probe Check 4 5 Pumping Down 6 2 R Refrigerant Charge 6 4 Refrigeration Circuit 2 10 Refrigeration System Data 2 7 Refrigeration Unit Front Section 2 1 T 285 INDEX
249. wer source Place circuit breaker CB 1 in position P ON Close and secure control box door 4 2 2 Connection to190 230 vac Power An autotransformer Figure 4 1 is required to allow operation on nominal 230 volt power It is fitted with a 230 vac cable and a receptacle to accept the standard 460 vac power plug The 230 volt cable is black in color while the 460 volt cable is yellow The transformer may also be equipped with a circuit breaker CB 2 The transformer is a step up transformer that will provide 380 460 vac 3 phase 50 60 hertz power to the unit when the 230 vac power cable is connected to a 190 230 vac 3 phase power source 1 Make sure that the start stop switch ST on control panel and circuit breakers CB 1 in the control box and CB 2 on the transformer are in position 0 OFF Plug in and lock the 460 vac power plug atthe receptacle on the transformer 2 Plug the 230 vac black cable into a de energized 190 230 vac 3 phase power source Energize the power source Set circuit breakers CB 1 and CB2 to position ON Close and secure control box door 1 Dual Voltage Modular Autotransformer 2 Circuit Breaker CB 2 230V 3 460 vac Power Receptacle Figure 4 1 Autotransformer 4 3 ADJUST FRESH AIR MAKEUP VENT The purpose of the fresh air makeup vent is to provide ventilation for commodities that require fresh air circulation The vent must be closed when transporting frozen foods
250. where the s indicate the test number and sub test The right display will show a countdowntime in minutes and seconds indicating how much time there is left remaining in the test T 285 CAUTION When a failure occurs during automatic testing the unit will suspend operation awaiting operator intervention When an automatic test fails it will be repeated once A repeated test failure will cause FAIL to be shown on the right display with the corresponding test num ber to the left The user may then press the DOWN ARROW to repeat the test the UP ARROW to skip to the next test or the PRE TRIP key to terminate test ing The unit will wait indefinitely until the user manu ally enters a command CAUTION When Pre Trip test Auto 2 runs to comple tion without being interrupted the unit will terminate pre trip and display Auto 2 end Theunit will suspend operation until the user depresses the ENTER key When an Auto test runs to completion without a failu re the unit will exit the pre trip mode and return to normal control operation If configuration variable CnF42 is set to IN a datacorder trip start will be en tered If CnF42 is set to OUT the trip start will not be entered However dehumidification and bulb mode must be reactivated manually if required c TO RUN AN INDIVIDUAL TEST Scroll through the selections by pressing the UP ARROW or DOWN ARROW keys to display an individual test code Pressing ENTER when the
251. ystem 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 6 6 2 Preparation a Evacuate and dehydrate only after pressure leak test Refer to paragraph 6 5 b Essential tools to properly evacuate and dehydrate any system include a vacuum pump 8 m3 hr 5 cfm volume displacement and an electronic vacuum gauge The pump is available from Carrier Trans icold P N 07 001 76 11 c If possible keep the ambient temperature above 15 6 C 60 F to speed evaporation of moisture If the 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 Additional time may be saved during a complete sys tem pump down by replacing the filter drier with a section of copper tubing and the appropriate fittings Installation of a new drier may be performed during the charging procedure 6 6 3 Procedure Complete system a Remove all refrigerant using a refrigerant recovery system b The recommended method to evacuate and dehy drate the system is to connect three evacuation hoses see Figure 6 5 to the vacuum pump and refrigeration unit Be sure the service hoses are suited for evacuation purposes c Test the evacuation setup for leaks by backseating the unit se

OPERATION AND SERVICE 69NT40--511--300 to

Contents

Download Pdf Manuals

Related Search

Related Contents