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FM-251AFE(-N)

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1. GR Y 3 e JA L E 611575242 1 CAPACITOR XY FILTER 5 0000000000 o9 00006 CAPACITOR XY F Flees eee Ss eels 11121314151817181 LBU COMPRESSOR kii Bh yee E 151811181111 1 12131415 11 START ERO 0 15 THERMAL PROTECTOR CN10 P STARTER 8 xs i FLOAT SWITCH BR 222 pa LBU gt L u CB RG BIN CONTROL SWITCH moo FUSE 3 15A PRESSURE SWITCH 9 R P Lo PROTECTION SWITCH Lit TRANSRORMER 1 12 T OPERATION SWITCH BK R B umm CNB mol 7 1 Loo 2 W BX P BK 17 wy s 2 CN6 1 MP M WATER SOLENOID 2 5 VALVE CONTROL 3 10 SN LBU W LBU W ud re ST mee WIRE COLOR CODE DBU Y DBU Y H RED d mS R RED l WATER SOLENOID VER BU s PLUE FOR NUGGET VALVE BLASB BD E eus MODEL ONLY lt dj BR X BROWN T O BK n GY K GRAY LBU LIGHT BLUE i E amp PINK mS Y YELLOW i k 3 amp VIOLET amp BLACK ay LBU W k amp LIG
2. ELOAT SWITCH a H mri TUM Y BIN CONTROL SWITCH WATER SOLENOID VALVE CONTROL LBU W LBU W 0890 7 PRESSURE SWITCH lt 4 PROTECTIQN SWITCH 1 Y Y is 51 DBU Y DBU Y WATER SOLENOID VALVE FLASH SURGE ABSORBER O BK FAN MOTOR BR THERMAL PROTECTOR 45 WIRE COLOR CODE R RED BU BLUE i DBU DARK BLUE BR BROWN GY GRAY LBU LIGHT BLUE PINK YELLOW V VIOLET BK BLAC LBU W LIGHT BLUEw WHITE P BK W BK WHITEw BLACK Y BK YELLOWw BLACK W Y WHITE wYELLOW O BK ORANGEw BLACK BR W BROWNw WHITE W R WHITEw RED m BK W BLACKw WHITE DBU Y DARK BLUEw YELLOW BK R BLACKw RED FM 481AGE N 1 Startup Water Supply GR Y PROTECTION LINE 20A 999999959901 9909905 9l 9 11121314151617181
3. 2131415161118181101112191415 11 7 CBU prom 3 y BIN CONTROL SWITCH 57 2 3 PRESSURE u SWITCH BR PROTECTION SWITCH 1 Y 7 BK R CN3 1 VERI CN H 3 5 CN6 8 irg 4 WATER SOLENOID 2 H VALVE CONTROL 3 0 6 Gi LBU W LBU W 4 1 O ih 4 3 xs 9 9 DBU Y DBU Y 5 WIRE COLOR CODE 200 RELAY X2 WATER SOLENOID fi ALDE VALVESEDASH DBU DARK BLUE HH BR BROWN GY GRAY 5 LBU LIGHT BLUE R FAN MOTOR PINK ze Y YELLOW _ VIOLET THERMAL BK BLAC PROTECTOR LBU W LIGHT BLUEw WHITE P BK PINKw BLACK RELAY X1 KARPI W BK WHITEw BLACK Y BX YELLOWw BLACK EEE 1 O BK ORANGEW BLACK SURGE ABSORBER BR W W R WHITEw RED PASS So eS 4j BK W BLACKw WHITE DBU Y BLUEw YELLOW BK R BLACKw RED 1 41 FM 251AFE N 3 Startup Ice production starts BR PROTECTION f LINE TAY GR Y OPERATION SWI
4. 1 111213141516171819 101114131419 11 START 2355550500500 6 STARTER 5 4 FUSE 3 184 GEAR MOTOR 4 CN3 HR A N1 3 n 5 6 3 WATER SOLENOID B1 Lm VALVE CONTROL 10 B 5 LBU ZW ilis 17 9 DBU Y DBU Y 1 WIRE COLOR CODE 2 MET i RE WATER SOLENOID HR a BG LVE FLASH E VALVE PHASE du DBU DARK BLUE BROWN O BK GY GRAY LBU LIGHT BLUE R PINK PER D D V tun RAN MOTOR RUN CAP VOR 56 2 BLACK FERE LBU W LIGHT BLUBw WHITE P BK PINKw BLACK ELAT XI W BK WHITEW BLACK 2 Y BK YELLOWw BLACK EG W Y WHITE wYELLOW lt i Q BK ORANGEw BLACK BR W BROWNw WHITE W R WHITEw RED BK W BLACKw WHITE DBU Y DARK BLUEw YELLOW BK R BLACKw RED SURGE ABSORBER 46 FM 481AGE N 2 Startup After completion of water supply Gear Motor and Fan Motor start 5 min PROTECTION LINE CAPACITOR XY FILTER GR Y 99999900 121314151617181 FUSE 3 154 GEAR MOTOR W R THERMAL PROTECTOR SURG
5. SA CAPACITOR XY FILTER FUSE t ERLOAD PROTECTOR CONTROL SWITCH SWITCH JU 23 lt 5 ERATION SWITCH 3 02 02 ANSFORM ANSFORM ER2 NTROL WATER VALVE WHO HVC USH WAT ER VALVE OTOR 550 AAO ESSURE SWITCH SWITCH EO lt ES 721691 P CODE POWER CODE SENSOR CAPACITOR STARTING RUN CAPAC ITOR Qn mco STARTING RELAY FM 481AWGE N PS 7 ess esce ehe s 52 TRI aua 51 gt 5 RS Ch CB wv 1 Em WV 23 X2 o 1153 9 9 RE OL cl ope fel 55 io CONTROLLER BOARD 50 gr SA SURGE ABSOBER ELE 1 1 POWER RELAY 1 X2 P
6. OB 000099000000 99090900 5 34 05 eel ste 2131415161118 ORRU 01112131415 11 ee ee A 1 1 CB DBU esset RESSURE SWITCH 3 1 R 2 3 4 5 6 T 41 8 rw WATER SOLENOID 3 LBU W H i itl les n DBU Y WIRE COLOR CODE RELAY X2 NL R RED HATER mm Br sius l DB DARK BLUE 14 BROWN O BK Mis GY GRAY ru LBU LIGHT BLUE R MOTOR E KW BU VIOLET THERMAL BLACK Uo PROTECTOR l LBU W LIGHT BLUEw WHITE EX P BK _ PINKy BLACK RELAY X1 BK W BK__ WH1TEa BLACK Y BK YELLOWw BLACK WA WHITE wYELLOW O BK ORANGEw BLACK SURGE ABSORBER BR W BROWNZ WHITE W R WBITEw RED oun ed BK W BLACKw WHITE DBU Y DARK BLUBy VELLOW 43 FM 251AFE N 5 Shutdown Compressor stops 5 min PROTECTION f LINE 108 K1 09 L 0 09000 o 00000050 3 Sd
7. 13 b FM 481AGE AMWGE N 14 MAINTENANCE AND CLEANING INSTRUCTIONS 15 1 EXTRUDING HEAD HOUSING BEARING AUGER BEARING 15 MECHANICAL eben an 15 3 GEAR MOTOR 16 4 CONDENSER 16 5 AIR FILTER AIR COOLED MODEL ONLY 16 WATER VALVE 17 7 CLEANING WATER SYSTEM 18 8 PERIODICAL GUEANING eunti 20 He TEGHINICALINEORIMATION 2 une n 21 1 WATER CIRCUIT AND REFRIGERANT CIRCUIT 21 3 PNEDBTAEELD IN nonien 21 b FM 48 1 AGE eoe einn 22 c FEM AS enano 23 2 WIBINGIDIAGBAM 24 a WIPING DIAGRAM 24 CONTROL BOX nitatis 27 3 IGEMAKING MECHANISM eme nnnc enne 30 a EVAPORATOR innt 30 c EXTRUDING HEAD 31 d HOUSING 31 e MECHANICAL SEAL 31 f COUPLING SPLINE JOINT 31 9 GEAR MOTOR e e e neen
8. 11213 51611181 K2 xl i t 41516171819 011019131415 11 10 PROTECTION SWITCH 11 T CNS M 2 P BK 3 LH n LL CN6 T E 8 He 5 WATER SOLENOID H or o VALVE CONTROL 7 3 e LBU W LBU W n 841 4 3 M gt ur DBU Y DBU Y 5 WIRE COLOR CODE RELAY X R RED WATER SOLENOID Ba 30 BLUE VALVE p EASE DBU DARK BLUE BR BROWN GY GRAY 5 LBU LIGHT BLUE R FAN MOTOR P PINK YELLOW DP dn B Y VIOLET THERMAL BK BLAC TA PROTECTOR LBU W LIGHT BLUEw WHITE BR RELAY X TRANSFORMER XARP P BK PINKw BLACK eine N W BK WHITEw BLACK Y BK YELLOWw BLACK 1120 2 O BK ORANGEWw BLACK SURGE ABSORBER 4 BR W BROWNw WELTE W R WHITEw RED 5523 22 BK W BLACKw WHITE DBU Y DARK BLUEw YELLOW BK R BLACKw RED BIN CONTROL SWITCH DBU PRESSURE n SWITCH 9 44 FM 251AFE N 6 Shutdown Drain PROTECTION LINE 10A N GR Y BR es 1181
9. 1 OPERATION SWITCH BK R BU Am CN3 00000009290 BRD g VER E exer 3 P BK 9 1 1 e 2 5 3 5 CNG T 1 13 8 m WATER SOLENOID 2 E VALVE CONLROL 1 LBU W LBU W 1 19 1189 3 gt n 1 DBU Y DBU Y 8 RELAY X WATER SOLENOID VHR VALVE FLASH ON O BK 5 RUN CAP Y BK 5o al THEO 0 PROTECTOR ta m sS L HEATER 2222 5 FOR NUGGET MODEL ONLY SURGE ABSORBER 50 WIRB COLOR CODE R RED BU BLUE DBU DARK BLUE BR BROWN GY GRAY LBU LIGHT BLUE PINK Y YELLOW V VIOLET BK BLACK LIGHT BLUBw WHITE P BK PINKw BLACK W BK WHITEw BLACK Y BK YELLOWw BLACK W Y WHITE wYELLOW O BK ORANGEw BLACK BR W BROWNw WHITE W R WHITEw RED BK W BLACKw WHITE DBU Y DARK BLUEw YELLOW BK R BLACKw RED FM 481AGE N 6 Shutdown Drain BR PROTECTION f LINE 7085 GR Y 77777 CAPACITOR XY FILTER RO 112131413 11 KLEM LBU BR R RUN COMPRESSOR gons START CaP 1 GY 1 3 THERMAL
10. 82 3 COMPRESSOR 83 4 A 84 5 EXPANSION n nnn nnn n n nnne 85 6 WATER REGULATING VALVE WATER COOLED MODEL ONLY 86 7 EVAPORATOR ASSEMBLY nnne enne en sten n nnne 87 8 CONTROL WATER VALVE e esos sonne n n nnne n n nnne 91 9 FLUSH WATER VALVE n nnne n n nnne n n nnn 92 10 CONTROLLER BOARD 9 a MODIFICATION emanikan ian aaa 93 b REPLACEMENT 93 SPECIFICATIONS 1 FEATURES a LOW VOLTAGE When the supply voltage is too low or surrounding high current equipment starts up the voltage in the icemaker may drop temporarily In this case the Compressor will fail to start or the Gear Motor will lock during the icemaking operation The locked Gear Motor may apply the maximum torque to the icemaking mechanism and damage its parts To avoid this trouble the icemaker will be shut down when the voltage drops The icemaker will restart automatically when the proper voltage is restored b OVERLOAD PROTECTION The auger type icemaker employs the Gear Motor generating a large torque to scrape ice forming inside the Evaporator To produce nugget ice the Extruding Head also requires a large torque to compress ice Some use conditions may overload the icemaking mechanism The icemaker w
11. 481 Head Pressure bar Ice Production Capacity kg day 600 500 400 300 200 100 o o o Water Consumption E e Head qg Suction Pressure bar 10 10 21 15 32 21 Ambient Temp Water e Ice Production Capacity kg day 10 10 21 15 32 21 Ambient Temp Water 10 10 21 15 32 21 Ambient Temp Water 72 Suction Pressure bar d FM 481AGE N Head Pressure bar Ice Production Capacity kg day Water Consumption 600 500 400 300 200 100 e Head Pressure bar m Suction Pressure bar 10 10 21 15 32 21 Ambient Temp Water Temp C e Ice Production Capacity kg day 10 10 21 15 32 21 Ambient Temp Water Temp C 10 10 21 15 32 21 Ambient Temp Water Temp C 73 Suction Pressure bar FM 481 AWGE Head Pressure bar 600 500 400 300 200 Ice Production Capacity kg day Water Consumption e Head Pressure bar Suction Pressure bar 10 10 21 15 32 21 Ambient Temp Water e Ice Production Capacity kg day 10 10 21 15 32 21 Ambient Temp Water 10 10 21 15 32 21 Ambient Temp Water 74 Suction Pressure bar f FM 481 AWGE N N N Head Pressure bar 10
12. 1 32 CONO2 T 9 H31vM SE Z L24 131 Add NS 26 76 5 do 76 Sa 1 Slt c FM 481 AWGE FM 481AWGE N JICH 50 321 HIM 40151010 9 1 400627 4403 d WITH STORAGE BIN B 300 F 560 2 zu 203 106 627 259 826 3 SPECIFICATIONS 251 AC SUPPLY VOLTAGE 1 PHASE 220 240V 50 60 2 1 PHASE 240V 50Hz AMPERAGE 5 4 4 4 Ambient STARTING AMPERAGE 19 16A ELECTRIC CONSUMPTION 830 890W Ambient POWER FACTOR 64 84 POWER SUPPLY CAPACITY Min 1 62 1 68kVA 6 8 6 0A ICE PRODUCTION PER 24h 246 267 kg Ambient 200 224 kg Ambient 164 171 kg Ambient WATER CONSUMPTION PER 24h 1 0 251 0 272 Ambient 0 205 0 229 Ambient 0 169 0 176 m Ambient MAX STORAGE CAPACITY Not Applicable DIMENSIONS DRAWING No 560 W x 700 D x 780 H EXTERIOR FORES ener UM Steel Rear INSULATION Polyurethane Foam CONNECTION ELECTRIC Y type Con with Plug WATER SUPPLY Inlet G 3 4 Connected at rear DRAIN Outlet 3 4 x 2 Connected at rear HARVESTING SYSTEM Direct driven Auger 80W Gear Motor COMPRESSOR Hermetic Compressor 495W Model SC12D
13. OPERATION SWITCH BR R 2 E B BK R BU 0 BE W BK P BK rad R wry 2 eee 2 28 L 1 1 1 LBU W LBU W is WIRE COLOR CODE i 11 DBU Y DBU Y Lt eor RELAY X2 WATER SOLENOID BER m 4 BLUE FOR NUGGET VALVE RUASH BU DARK BLUE MODEL ONLY lt 1 x BROW O BK GY K 2718 BU k LIGHT BLUE lt FOR NUGGET R MODEL ONLY r ELL amp VIOLE K BLACK LIGHT BLUEw WHITE AR PINKw BLACK 2 WHITEw BLACK HEATER Y BK 7 YELLOWw BLACK WY 678 WHITE wYELLOW i O BK 8 8 ORANGEw BLACK TRANSFORMER BR W 78 BROWNw WHITE wer i I A A IWHITEw RE W R WHITEw RED _ AE BK W 8 48 BLACKw WHITE BU od y BU DBU Y amp amp DARK BLUEw YELLOW LBU 056 59 BU i2 BK R BLACKw RED SURGE ABSORBER 26 b CONTROL BOX LAYOUT FM 251AFE N Bs 92 TRI Iu LATI o 9 1
14. eene n 59 i CHUTE SWITCH 60 i DEICING HEATER BELT HEATER 60 7 OPERATION BOARD 61 a USER OPERATION nennen e eene 61 6 SERVICE OPERATION nn 61 8 PROTECTORS 65 a INDICATION nennen e nnne e nn 65 D PROTECTORS 65 9 ERROR 5 68 10 PERFORMANCE DATA 70 251 70 Ic 251 71 72 TAGEN 73 e FM A8 TAWGE 74 aaa 75 IV SERVICE DIAGNOSIS 76 1 76 2 LOW ICE PRODUCTION 78 3 OTHERS 78 V REMOVAL AND REPLACEMENT OF COMPONENTS 80 1 SERVICE FOR REFRIGERANT LINES 80 a SERVICE 80 0 REFRIGERANT RECOVERY 81 c EVACUATION AND RECHARGE 81 2
15. 0111 vice Se BR PROTECTION 591 WATER SOLENOID VALVE RLASH FLOAT SWITCH BIN CONTROL SWITCH DBU PRESSURE SWITCH Y TCH 9 1 RELAY X1 O BK SURGE ABSORBER 56 CN3 1 VHR 2 1 4 H 5 3 6 CN6 1 8 2 11 BOLE WIRE COLOR CODE 18 R amp NE BU B BLUE LA DBU DARK BLUE BR X BROWN GY k 5 LBU ik LIGHT BLUE P Y X YELLOW amp VIOLET amp BLACK LBU W 8 LIGHT BLUEw WHITE P BK R 8 PINKm BLACK W BK 8 8 NHITEw BLACK Y BK YELLOWW BLACK W Y WHITE vYELLOW 0 l a ORANGEv BLACK BR W BROWNw WHITE onn W R WHITEw RED BK W 8 8 BLACKw WHITE DBU Y DARK BLUEW YELLOW BK R BLACKw RED FM 481AWGE N 6 Shutdown Drain PROTECTION LINE 20A GR Y LO RUN CAP STARTER COMPRESSOR 201 FOR NUGGET 655599595995 5
16. WATER SOLENOID 2 3 VALVE CONTROL 3 m ul IPS LBUW LBUAW uj 2 7 WIRE COLOR CODE DBU Y DBU Y 5 ELAY X2 gt T 11 WATER SOLENOID VHR RED FOR NUGGET l l VALVE LAS Md DBU e DARK BLUE MODEL ONLY BR amp BROWN 1 CERTE 180 BLUE 7 po Y VELLO F amp VIOLET BLACK TEL LBU W 8 LIGHT BLUEw WHITE BR RELAY X1 P BK PINKw BLACK 1 W BK 8 8 NHITEw BLACK Y BK amp 8 YELLOWw BLACK WY _ WHITE vYELLOW 4 Q BK ORANGEy BLACK BR W_ 4 8 BROWNW WHITE W R WHITEW RED BK W BLACKw WHITE DBU Y w DARK BLUEW YELLOW BK R BLACKw RED 53 FM 481AWGE N 3 Startup Ice production starts PROTECTION GR Y BR COMPRESSOR A RUN CAP THERMAL PROTECTOR CN11 i t 10 i I 1 VERI de 1 3 2101 1 H 5 CN6 1 dab m 5 9 h H 10 He e i27 4 4 i 1 5 ELAY X2 WATER SOLENOID VERI FOR NUGGET VALVE
17. BLUE 1 1 X BROWN O BK GY GRAY unti LBU x LIGHT BLUE 5 PINK MOTOR RUN V 14 s 26 Ld THERMAL LBU W LIGHT BLUEw WHITE BR m PROTECTOR P BK 4 PINKw BLACK Se W BK 15 9 WHITEW BLACK Y BK YRLLOWw BLACK WHITE wYELLOW i O BK ORANGEw BLACK BR W BROWNw WHITE _ WHITEW RED de BK W 8 BLACKw WHITE 11 DBU Y amp DARK BLUEw YELLOW BK R 7 BLACKs RED SURGE ABSORBER 25 FM 481AWGE N ps GR Y 4 77777 PROTECTION ff LINE CAPACITOR XY FILTER t EM 7 1 LBU B RUN CAP COMPRESSOR starr CAP i SEEN MES 1 ib V P 1 Iis M ELORT SWITCH hos cm ae GY CB BIN CONTROL SWITCH DBU DBU FUSE 3 15 5 PRESSURE V SWITCH 9 P Y PROTECTION SWITCH V _____ TRANSFORMER 1 _ 7
18. Holds at least 10L plastic bucket Connecting Hose Vinyl hose 09 x 815 x 1 5m x 2 Cold or warm water 10L 50 C water is most effective Scale Remover Appropriate amount Note The cleaning procedure may vary depending on the remover used Follow the instructions of the manufacturer Others W16 Flare Nut x 2 Wire Connecting Pipe with one flared end x 2 2 Remove the cabinet and check the Condenser joint for corrosion or water leak 3 Disconnect the flare nuts at the Condenser inlet and outlet 4 To prepare a circulation circuit connect the Condenser outlet top with the hose to the Tank and the Condenser inlet bottom with the hose from the Pump Motor 5 Operate the Pump Motor to clean the Condenser 6 Circulate the solution for 0 5 2 hours depending on the amount of scale The solution may turn reddish black in 30 minutes with dissolved scale It will not reattach during circulation Also the solution may bubble in the Dissolving Tank by chemical reaction which will not affect cleaning 7 After cleaning rinse the circuit until the water becomes clear 8 After rinsing reconnect the Condenser and restart the icemaker 9 The cleaning effect should be checked by the amount of scale dissolved during the circulation cleaning or by comparison of suction and discharge pressures and cooling water amount between before and after the cleaning g CONDENSER CO
19. IMPORTANT Push the Siop Button before tuning OFF me Op et rSwich The unit will drain automatically nutes STOP 5 tops Thashing urn GEE 1e Operation OFF OPERATION SWITCH a USER OPERATION accessible from the Window Panel ICE When pressed in the STOP mode the unit will be supplied with water and start icemaking operation STOP When pressed in the ICE mode the unit will stop icemaking operation and drain RESET When pressed during shutdown with an error code displayed the unit may restart icemaking operation Unless the cause of the error is removed the unit may stop again with the error code returned OPERATION SWITCH Power supply for the icemaker Turn it OFF to shut down the unit for a long time The Crankcase Heater will remain energized after the switch is turned OFF b SERVICE OPERATION Remove the Front Panel for access to the Option and Set Buttons CAUTION Removal of the Front Panel will expose moving and hot parts It is allowed for qualified service personnel only 1 Setting Model No The Model Setting No must be set at the time of replacement of the Controller Board Check the Model Setting No specified on the wiring label Improper setting may result in failure or inoperability Keep pressing the Set Button and turn ON the Operation Switch Release the Set Button when the Display Window shows 01 Press the Ice Button to increase the nu
20. e CONTROLLER BOARD The icemaker is controlled by the Controller Board based on the following logic 1 Low Voltage Standby In a low voltage condition the Compressor and Gear Motor may fail to start or rotate properly due to insufficient torque This could result in a twisted Evaporator The icemaker will stop icemaking operation until the proper voltage is restored 2 Ice Production Control In a low ambient or water temperature condition the ice production capacity will increase Then the Gear Motor will have a larger torque to scrape off ice which will overload the entire icemaking mechanism 3 Error Code Indication When the icemaker shuts down with a trouble an error code will be displayed immediately to notify the user facilitate servicing ask the user for the applicable error code and prepare for the trouble in advance 4 Flush Timer The previous models were equipped with a Flush Timer that periodically flushes the water circuit to prevent water deposits from entering the Bearing and accelerating its wear The latest models have the Controller Board provided with this function of the Flush Timer During the flush cycle the Display Window on the Operation Board will illuminate DRAIN As the auger type icemaker continuously produces ice the content of substances included in the icemaking water inside the Evaporator Casing is three to five times as high as that in the supplied water As a result substances suc
21. 17 3 PROTECTOR STARTER 08 28 BR XO 1 f 2 FUSE 3 154 GEAR MOTOR 4 222 TRANSFORMER OPERATION SWITCH l mm UST L nu BEA au 12 B W BK 201 3 4 2 5 13 6 CNG 1 18 ag 2 d 3 10 n 5 ool 4 4 3 2 i 5 2 2 WATER SOLENOID VER VALVE FLASH K O BK 5 MOTOR py RUN CAP wax Bee za zl THERMAL o PROTECTOR EZ os L HEATER 3 gt FOR NUGGET MODEL ONLY SURGE ABSORBER 51 BIN CONTROL SWITCH HT 0 DBU e WIRB COLOR CODE R RED BU BLUE DBU IDARK BLUE B BROWN GY GRAY LBU LIGHT BLUE P PINK Y YELLOW V VIOLET B BLACK LBU W_ LIGHT BLUEw WHITE P BK PINKw BLACK W BK WHITEw BLACK Y BK YELLOWw BLACK W Y WHITE wYELLOW O BK ORANGEw BLACK BR W BROWNy WHITE W R WHITEg RED BK W BLACKw WHITE DBU Y DARK BLUEw YELLOW BK R BLACKw RED FM 481 AWGE N 1 Startup Water Supply
22. ON PROTECTI 5 LINE eC GR Y oe OB CAPACITOR XY FILTER 8868080 8 M 1721314 T8 1718 LBU 1 BN E BUN SAP 1213141516178 0101019131418 cui 2 1 sr c E 1 249 C PROTECTOR S 1 STARTER amp of 1 SNID SWITCH DN LAW p 5 n 1 GY es 3 n BIN CONTROL SWITCH PBU DBU EN FUSE i PRESSURE ul SWITCH roi BR 5 Y fa PROTECTION SWITCH xL dd s V Ir Ne 1 E OPERATION SWITCH 2 BK R BU P T D TN CN3 BE VER 2 W BK P BK ed w O 5 3 5 SANE I CN6 71 WATER SOLENOID 2 BIT eo VALVE CONTROL zl 10 68 41 5 1 LBU ZW LBU W 11 re e m WIRE COLOR CODE E 1 DBU Y DBU Y IER berg 6 RELAY X WATER SOLENOID E T TER SOLEN Ne 1 up LR DBU
23. gt I 8 SURGE ABSORBER oo WATER SOLENOID VALVE FLASH O BK FAN MOTOR RUN CAP Y BK THERMAL PROTECTOR me x 102000 49 CONTROL SWITCH DBU DBU Y PRESSURE SWITCH 22 PROTECTION SWITCH WIRB COLOR CODE R RED BU BLUE DBU DARK BLUE BR BROWN GY GRAY LBU LIGHT BLUE P PINK X YELLOW V VIOLET BK BLACK 11687 BLUEw WHITE P BK PINKw BLACK W BK WHITEw BLACK Y BK YELLOWw BLACK W Y WHITE wYELLOW O BK ORANGEw BLACK BR W BROWNy WHITE W R WHITEw RED BK W BLACKw WHITE DBU Y DARK BLUEw YELLOW BK R j BLACKw RED FM 481AGE N 5 Shutdown Compressor stops 5 min I N GR Y PROTECTION LINE 20 Co CAPACITOR XY FILTER FUSE 3 154 GEAR MOTOR T WR gt TRAL PROTECTOR TRANSFORMER 1 99999900 121314151617181
24. HOSHIZAKI MODULAR ICE MAKER MODEL FM 251AFE N FM 481AGE N FM 481AWGE N SERVICE MANUAL 5 1 PEA TURES 1 Fea COW VOLTA 1 BI OVERLOAD PROTECTION gt 1 OVER OAD ERROR ee ennt 1 enne a 1 c ERBOR CODES AND RECORDS oca 1 il enhn niue 2 GHANGE OF ICE TYPE 2 2 DIMENSIONS CONNECTIONS nnnc 3 a EM 251AFE 2 denen nnne entente 3 D P48 AGE 4 c eonim ntn tantuni ette 5 d WITH STORAGE BIN 300 6 3 a titanic ae senden konnte y 8 c ntn addere 9 10 c anten 11 elata nena indidem 12 A CONSTRUOTION 13
25. ICE PRODUCTION PER 24h Approx 500 kg Ambient 425 kg Ambient Ambient Ambient 0 425 Ambient 0 325 m Ambient MAX STORAGE CAPACITY Not Applicable DIMENSIONS DRAWING No 560 W x 699 D x 780 H 348158 EXTERIOR Sane Steel Rear INSULATION Polyurethane Foam CONNECTION ELECTRIC Y type Con with Plug WATER SUPPLY Inlet G 3 4 Connected at rear side DRAIN Outlet 3 4 x 2 Connected at rear side HARVESTING SYSTEM Direct driven Auger 200W Gear Motor COMPRESSOR Hermetic Compressor Model RS80C2E CAZ 219 CONDENSER Fin and Tube type forced air cooling HEAT REJECTION 3150W Ambient temp 32 C Water temp 21 C EVAPORATOR Copper Tube on Oylinder REFRIGERANT CONTROL Thermostatic Expansion Valve REFRIGERANT CHARGE 404 7700 Mechanical Bin Control Time Delay Controlled ICE MAKING WATER CONTROL Float Switch and Water Valve ELECTRICAL PROTECTION Class Appliance COMPRESSOR PROTECTION Auto reset Overload Protector Auto reset Pressure Switch GEAR MOTOR PROTECTION Manual reset Circuit Breaker Auto reset Thermal Protector LOW WATER PROTECTION Float Switch and CM Controller BIN CONTROL PROTECTION Mechanical Switch WEIGHT Net weight 97 kg Gross weight 118 kg PACKAGE Carton 671mm W x 820mm D x 910mm H ACCESSORIES Scoop Mounting Bracket Installation Kit OPERATION CONDITIONS AMBIENT TEMP 5 40 C WATER SUPPLY TEMP 5 35 C WATER SUPPLY PRESSURE 0 5 8 bar 0 05 0 8MPa VOLTAGE RANGE Rated Volt
26. the icemaker Release the High side Access Connector and allow pressure in the charging line to slowly enter the low side of the system Cap off the High side Access Valve When pressure reduces on the low side disconnect the low side charging line and cap off the Access Valve 8 Always cap the Access Valves to prevent a refrigerant leak Tighten the cap to a torque of 9 81 12 26 Nm 9 Always thoroughly leak test all joints and valve caps 10 Avoid charging large quantities of liquid into the low side in case of damage to the Compressor Depressed Cap Access Valve OPEN 2 BRAZING DANGER Refrigerant R4044 itself is not flammable explosive and poisonous However when exposed to an open flame R404A creates Phosgene gas hazardous in large amounts Always recover the refrigerant and store it in a proper container if required by an applicable law Do not discharge the refrigerant into the atmosphere Do not use silver alloy or copper alloy containing Arsenic In its liquid state the refrigerant can cause frostbite because of the low temperature 82 3 COMPRESSOR IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened Do not replace the Drier until after all other repair or replacement has been made 1 Disconnect the power source 2 Remove the panels 3 Remove the Terminal Cover on the Compressor and disconnect the Compressor wiring 4 Recover the
27. 1 Replace 0 Water Supply Tap 1 Closed 1 Open 2 Water failure 2 Wait till water is supplied h Plug and 1 Disconnected 1 Connect Receptacle 2 Terminal out of Plug 2 Insert Terminal back in position i Chute Switch 1 Tripped 1 See Ill 6 CHUTE SWITCH j Overload Protector 1 Tripped 2 Reset k Model Setting No 1 Incorrect 2 Set correct No See Ill 7 b 1 Setting Model No 2 Water does not stop and the icemaker will not start a Water Control Relay Controller Board 1 Contacts fused Replace Controller Board 2 Coil winding opened 2 Replace Controller Board b Float Switch 1 Bad contacts Check for continuity and replace 2 Float does not move freely Clean or replace c Flush Water Valve 1 Valve seat clogged and water leaking Clean or replace 3 Water has been supplied but the icemaker will not start a Bin Control Bad contacts d Hoses 1 Disconnected 1 Connect e Mechanical Seal 1 Water leaks 1 Replace f Reservoir 1 Cracked 1 Replace 1 1 Check for continuity and replace 2 Activator does not move freely 2 Clean Axle and its corresponding holes or replace Bin Control See 111 6 h BIN CONTROL SWITCH 76 PROBLEM POSSIBLE CAUSE REMEDY 3 Continued b Gear Moto
28. REFRIGERANT CHARGE BIN CONTROL SYSTEM ICE MAKING WATER CONTROL ELECTRICAL PROTECTION COMPRESSOR PROTECTION GEAR MOTOR PROTECTION LOW WATER PROTECTION BIN CONTROL PROTECTION WEIGHT PACKAGE ACCESSORIES OPERATION CONDITIONS AMBIENT TEMP WATER SUPPLY TEMP 560 W x 699 D x 780 H 350939 Steel Rear Polyurethane Foam Y type Con with Plug Inlet G 3 4 Cond Inlet Rc 1 2 Outlet R 3 4 x 2 Cond Outlet Rc 3 8 Auger type Direct driven Auger 200W Gear Motor Hermetic Compressor Model RS80C2E CAZ 219 Water cooled Tube in Tube Type Copper Tube on Cylinder Thermostatic Expansion Valve R404A 4500 Mechanical Bin Control Time Delay Controlled Float Switch and Water Valve Class Appliance Auto reset Overload Protector Auto reset Pressure Switch Manual reset Circuit Breaker Auto reset Thermal Protector Float Switch and CM Controller Mechanical Switch Net weight 97 kg Gross weight 118 kg Carton 671mm W x 820mm D x 910mm H Scoop Mounting Bracket Installation Kit Connected at rear side Connected at rear side Connected at rear side Connected at rear side 5 40 C 5 35 C WATER SUPPLY PRESSURE 0 5 8 bar 0 05 0 8MPa VOLTAGE RANGE Rated Voltage 10 We reserve the right to make changes in specifications and design without prior notice 12 4 CONSTRUCTION Modular flaker models FM 251AFE N and FM 481AGE AWGE N include Water Supply Evaporator Compres
29. neutral cleaner to wipe off grease or dirt 2 Storage Bin Interior Cleaning Sanitisation as required 1 Open the Storage Bin Door and remove all ice 2 Wash the Bin Liner Ice Deflector and Door inner surface with a neutral non abrasive cleaner Rinse thoroughly with a clean cloth and fresh water 3 Mix 5 litres of water with 18 mL of 5 2596 sodium hypochlorite solution in a suitable container or the recommended Hoshizaki sanitiser as directed 4 Soak a clean sponge or cloth with the solution and wipe all the surfaces of the Bin Liner Ice Deflector and Door inner surface 5 Rinse thoroughly with fresh water and a clean cloth to wipe off the solution Close the Bin Door Note Some solutions may cause damage to the Bin liner surfaces or corrosion on the metal parts Always rinse the sanitiser unless directed otherwise by Hoshizaki guidelines 20 TECHNICAL INFORMATION 1 WATER CIRCUIT AND REFRIGERANT CIRCUIT a FM 251AFE N COMPRESSOR SWITCH ban PRESSURE VE ACCESS V FLOAT 7 WATER INLET E C SWITCH FAN MOTOR EVAPORATO ILL ONTROL WATER VELVE RESERVOIR CONDENSOR DRIER WATER OUTLET FLUSH WATER VALVE Pressure Switch Cut out 28 5 1 5 0 bar Cut in 23 0 1 5 bar 21 b FM 481AGE N COMPRESSOR ACCESS VALVE FLOAT SWITCH FAN M
30. the water circuit including the a Condenser for water cooled model must be completely drained otherwise protected to prevent freeze up and damage before shutting down the icemaker at night Air Shut off Valve Air or Union Drain Water Supply Line Shut off Valve Water Supply a Water cooled Model 1 Operate the icemaker in the ICE mode 2 Close the Water Supply Line Shut off Valve to stop water supply 3 Open the Air Shut off Valve 4 Blow the Water cooled Condenser out using compressed air or 33 5 The sound of draining water is heard from the Water cooled Condenser 6 Press the Stop Button and drain the Float Tank and Evaporator Casing 7 Turn off the icemaker Before restarting the icemaker 1 Close the Air Shut off Valve 2 Open the Water Supply Line Shut off Valve b Air cooled Model Follow the above steps 2 3 6 and 7 c Operation of Water Regulator When the Water Supply Line Shut off Valve is closed no cooling water will flow into the Condenser raising the condensing pressure Then the Water Regulator will open wider to increase the cooling water flow If air is sent from the water inlet in this condition the water remaining inside the Condenser will drain out through the wide open Water Regulator If the
31. 600 500 400 300 200 100 Ice Production Capacity kg day Water Consumption Head Pressure bar E Suction Pressure bar 10 10 21 15 32 21 Ambient Temp Water e Ice Production Capacity kg day 10 10 21 15 32 21 Ambient Temp Water Temp C 10 10 21 15 32 21 Ambient Temp Water Temp C 75 Suction Pressure bar IV SERVICE DIAGNOSIS Display error record by operating the Operation Board See Record 1 NO ICE PRODUCTION Check for a possible cause and service the unit 7 b 5 Displaying Error PROBLEM POSSIBLE CAUSE REMEDY 1 The icemaker a Power Supply 1 OFF position 1 Move to ON position will not start 2 Loose connections 2 Tighten 3 Bad contacts 3 Check for continuity and replace 4 Blown fuse 4 Replace 5 Voltage too low 5 Get recommended voltage b Fuse Controller 1 Blown out 1 Find out the cause of short Board indication on circuit ex Control Water Operation Board Valve Flush Water Valve resolve it and replace Controller Board Transformer d Operation Switch 1 Disconnected Receptacle 1 OFF position Connect Move to ON position Control Box or Receptacle 2 Bad contacts 2 Check for continuity and replace Transformer 1 Coil winding opened 1 Replace f Water Valve 1 Coil winding opened
32. AND REPLACEMENT OF COMPONENTS 1 SERVICE FOR REFRIGERANT LINES a SERVICE INFORMATION 1 Allowable Compressor Opening Time and Prevention of Lubricant Mixture 404 The compressor must not be opened more than 30 minutes in replacement or service Do not mix lubricants of different compressors even if both are charged with the same refrigerant except when they use the same lubricant 2 Treatment for Refrigerant Leak R404A If a refrigerant leak occurs in the low side of an ice maker air may be drawn in Even if the low side pressure is higher than the atmospheric pressure in normal operation a continuous refrigerant leak will eventually lower the low side pressure below the atmospheric pressure and will cause air suction Air contains a large amount of moisture and ester oil easily absorbs a lot of moisture If an ice maker charged with R404A has possibly drawn in air the drier must be replaced Be sure to use a drier designed for R404A 3 Handling of Handy Flux R404A Repair of the refrigerant circuit needs brazing It is no problem to use the same handy flux that has been used for the current refrigerants However its entrance into the refrigerant circuit should be avoided as much as possible 4 for Processing of Copper Tubing R404A When processing the copper tubing for service wipe off oil if any used by using alcohol or the like Do not use too much oil or let it into the tubing as wax contained in the oil wil
33. CONDENSER Check the Condenser once a year and clean if required by using a brush or vacuum cleaner More frequent cleaning may be required depending on the location of the icemaker 5 AIR FILTER AIR COOLED MODEL ONLY A plastic mesh Air Filter removes dirt or dust from the air and keeps the Condenser from getting clogged As the Filter gets clogged the icemaker s performance will be reduced Remove and clean the Air Filter at least twice per month 1 Slide the Air Filter off the Louver 2 Clean the Air Filter by using a vacuum cleaner When severely clogged use warm water and a neutral cleaner to wash the Air Filter 7 MM PA Air Filter 3 Rinse and dry the Air Filter thoroughly and place it in J position Louver 16 6 WATER VALVE 1 Disconnect the power source 2 Close the water supply tap 3 Disconnect the Inlet Hose from the Water Valve 4 Remove the Mesh Filter from the Water Valve 5 Clean the Mesh using a brush 6 Replace the Mesh and Inlet Hose in their correct positions 7 Open the water supply tap 8 Connect the power source 9 Check for leaks Do not remove Filter Inlet Hose Packing 17 7 CLEANING OF WATER SYSTEM WARNING HOSHIZAKI recommends cleaning this unit at least twice a year More frequent cleaning however may be required in some existing water conditions 2 Do not touch the Operation Switch with damp hands 3 Always wear rub
34. Expansion Valve using brazing equipment 6 Braze the new Expansion Valve with nitrogen gas flowing at the pressure of 0 2 0 3 bar WARNING Always protect the valve body by using a damp cloth to prevent the valve from overheating Do not braze with the valve body exceeding 120 C 7 Install the new Drier See 4 DRIER 8 Check for leaks using nitrogen gas 10 bar and soap bubbles 9 Evacuate the system and charge it with refrigerant See the Nameplate for the required refrigerant charge See 1 EVACUATION AND RECHARGE 10 Attach the Bulb to the suction line Be sure to secure the Bulb using a wire or clamp and replace the insulation 11 Place the new set of Expansion Valve Covers in position 12 Refit the Front Panel in its correct position 13 Connect the power source 85 6 WATER REGULATING VALVE WATER COOLED MODEL ONLY IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened Do not replace the Drier until after all other repair or replacement has been made 1 Unplug the icemaker 2 Close the water supply tap 3 Remove the panels 4 Recover the refrigerant and store it in a proper container if required by an applicable law 5 Disconnect the Capillary Tube using brazing equipment 6 Disconnect the Flare connections of the valve 7 Remove the screws and the valve from the Bracket 8 Install the new valve and braze the Capillary Tube 9 I
35. a total of 8 000 10 000 hour operation from installation date Note The clearance between the Auger blades and the Evaporator interior is 0 4 0 5 mm the Bearings and rotating parts are worn out to create a larger clearance the Evaporator interior may be damaged The diameters differ by 0 8 1 0 mm If the Auger surfaces against which the Bearings contact are no longer smooth or show any burrs or abrasions during the above inspection replace the auger 2 MECHANICAL SEAL The Mechanical Seal prevents water leaks from between the Auger and the Housing Bearing and gradually wears out to reduce its watertightness Check the amount of water leakage from the Drain Pipe located at the side of the Gear Case to determine the necessity of replacement Total operation time Water leakage 3 000 hours 0 1 mL h 10 000 hours 0 5 mL h Note The water leakage will exceed the above amount with scale dirt build up or damage on the mating surface Replace the Mechanical Seal when the water leakage exceeds 0 5 mL h 15 3 GEAR MOTOR After the following hours of operation check the Gear Motor for excessive noise caused by increased torque or deterioration of mechanical parts Bearing Gear and other mechanical parts 10 000 hours Oil seal 5 years Note When the output shaft oil seal is exposed to a large amount of water at one time water may enter the Gear Case Always drain the water circuit before removing the Auger for service 4
36. out the cause of overheat or overcurrent Install a larger sized a Refrigerant Line 1 Gas leaks 2 Refrigerant line clogged low conductor d Controller Board 1 Broken 1 Replace i Check for leaks with a leak detector Reweld leak replace Drier and charge with refrigerant The amount of refrigerant is marked on Nameplate or Label 2 Replace the clogged component 77 2 LOW ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY 1 Low ice a Refrigerant Line 1 Gas leaks 1 See 1 5 production 2 Refrigerant line 2 Replace the clogged clogged component 3 Overcharged 3 Recharge b High side 1 Dirty Air Filter or 1 Clean Pressure Too Condenser High 2 Ambient or condenser 2 Check for recommended water temperature too temperature warm 3 Condenser water 3 Check and get recommended pressure too low or pressure off 4 Fan rotating too slow 4 See 3 1 a 5 Water Regulating 5 Clean Valve clogged Expansion Valve 1 Low side pressure 1 Replace not adjustable exceeding the limit d Evaporator 1 Evaporator pipe 1 Replace crushed 3 OTHERS PROBLEM POSSIBLE CAUSE REMEDY 1 Abnormal noise Fan Motor 1 Bearing worn out 1 Replace Condenser Unit 2 Fan blade deformed 2 Replace fan blade 3 Fan blade does not 3 Replace move freel
37. refrigerant and store it in a proper container if required by an applicable law 1 0 REFRIGERANT RECOVERY 5 Remove the Discharge Suction and Access Pipes from the Compressor using brazing equipment WARNING When repairing a refrigerant system be careful not to let the burner flame contact any electrical wires or insulation 6 Remove the Bolts and Rubber Grommets 7 Slide and remove the Compressor Unpack the new Compressor package Install the new Compressor 8 Attach the Rubber Grommets of the previous Compressor 9 Clean the Suction and Discharge Pipes with an abrasive cloth paper 10 Place the Compressor in position and secure it using the Bolts and Washers 11 Remove plugs from the Discharge Suction and Access Pipes 12 Braze the Access Suction and Discharge Pipes Do not change this order with nitrogen gas flowing at the pressure of 0 2 0 3 bar 13 Install the new Drier See 4 DRIER 14 Check for leaks using nitrogen gas 10 bar and soap bubbles 83 15 Evacuate the system and charge it with refrigerant See the Nameplate the required refrigerant charge See 1 EVACUATION AND RECHARGE 16 Connect the Terminals to the Compressor and replace the Terminal Cover in its correct position 17 Refit the panels in their correct position 18 Connect the power source 4 DRIER IMPORTANT Always install a new Drier every time the sealed refrigeration
38. refrigerant must be recovered if required by an applicable law A Low side Access Valve is provided in the unit Recover the refrigerant from the Access Valve and store it in a proper container Do not discharge the refrigerant into the atmosphere When replacing the Drier take the opportunity to also fit a High side Access Valve for ease of charging liquid refrigerant c EVACUATION AND RECHARGE 1 Attach Charging Hoses Service Manifold and Vacuum Pump to the Low side and High side to be fitted by servicer Access Valves If possible use Quick Release Connectors onto the Access Valves especially on the high side 2 Turn on the Vacuum Pump 3 Allow the Vacuum Pump to pull down to a 760 mmHg vacuum Evacuating period depends on the pump capacity 4 Close the Low side and High side Valves on the Service Manifold 5 Disconnect the Vacuum Pump and attach a Refrigerant Charging Cylinder to accurately weigh in the liquid charge Remember to purge any air from the Charging Hose See the Nameplate for the required refrigerant charge 6 Open the High side Valve on the Gauge Manifold and accurately measure in the liquid charge Close the valve on the Charging Cylinder before closing the High side Manifold Valve Any remaining liquid in the line can be charged into the low side Note Always charge in the liquid stage as many refrigerants are blends and vapour charging will affect the blend consistency eg R404A 81 7
39. 4 FS 3 Lm SERVICE CALL RS ERG CB n X2 o 259153 oj ZAR iili ORI 1 P CODE 8i SO OL o Is 57 Cl CB CONTROLLER BOARD AT 18 SA SURGE ABSOBER Al 1 POWER RELAY POWER RELAY IB CAPACITOR GM CAPACITOR XY FILTER FUSE Ge OL OVERLOAD PROTECTOR F SI BIN CONTROL SWITCH 52 PROTECTION SWITCH S3 OPERATION SWITCH TRI TRANSFORMER1 TR2 TRANSFORMER CONTROL WATER VALVE WV2 FLUSH WATER VALVE FAN MOTOR GM GEAR MOTOR CM COMPRESSOR PS PRESSURE SWITCH FS FLOAT SWITCH 55 ROTATION SENSOR P CODE POWER CODE 27 FM 481AGE N TRI 9 L1 im hice 1ce DRAIN STOP Ols tantot statt pro 20 aia OPERATION SWITCH N 151 9 CB Wy2 03 gt M 2111 lt c CONTROLLER BOARD SC 89 gt SURGE ABSOBER a POWER RELAY B POWER RELAY
40. 9500055 x 5 s Fe HI ISTATSTeTTISTO Lor 1121314 5 T6 7 8 1 4 7 EF 5 DBU oY 61 T 8 9 Y 1 PROTECTION SWITCH 12 T MODEL ONLY R rh rer ul BR RELAY X1 SURGE ABSORBER 57 BIN CONTROL SWITCH PRESSURE SWITCH CN3 l VHR 2 3 1 n 12 5 3 6 6 1 1 8 WATER SOLENOID 2 9 VALVE CONTROL Hi WIRE COLOR CODE R WATER SOLENOID HR BU BLUE VALVE BLASH Wu DEUX E BR X BROWN O BK n GY K GRAY LBU x LIGHT BLUE ONLY Y YELLOW amp VIOLET BK BLACK LBU W LIGHT BLUEw WHITE P BK PINKw BLACK W BK WHITEw BLACK Y BK amp 8 W Y 8 WHITE wYELLOW O BK ORANGEw BLACK IBR W 8 BROWNW WHITE W R WHITEW RED Bk W BLACKw WHITE magii DBU Y DARK BLUEW YELLOW BK R amp amp BLACKw RED d OPERATION BOARD The Operation Board is provided for operation of the icemaker See 7 OPERATION BOARD for details
41. E ABSORBER 10 11 1_ 5 OPERATION SWITCH BK R BU CN3 200500000000 BRD VERY 2 LM CNI E P BK LS 1 1 e 2 5 zv 3 5 CN6 18 5 9 WATER SOLENOID 2 EA VALVE CONTROL 3 1 5 LBU W LBUZW 1 19 1 DBU Y DBU Y 5 kes 6 RELAY X WATER SOLENOID VHR VALVE FLASH ICN4 O BK 5 RUN CAP Y BK 5o PROTECTOR m sS L HEATER 2222 FOR NUGGET MODEL ONLY 47 fpr PROTECTION SWITCH 2 WIRB COLOR CODE R RED BU BLUE DBU DARK BLUE BR BROWN GY GRAY LBU LIGHT BLUE PINK Y YELLOW V VIOLET BK BLACK LIGHT BLUBw WHITE P BK PINKw BLACK W BK WHITEw BLACK Y BK YELLOWw BLACK W Y WHITE wYELLOW O BK ORANGEw BLACK BR W BROWNw WHITE W R WHITEw RED BK W BLACKw WHITE DBU Y DARK BLUEw YELLOW BK R BLACKw RED FM 481AGE N 3 Startup Ice production starts BR PROTECTION f LINE 7085 BRZW LA l 103 BR RELAY X1 SURGE ABSORBER GEAR MOTOR GR Y 77777 CAPACITOR XY FILTER 1 THERMAL PROTECTOR H DBU Y 121314151517181 18111101 112131413 11 BIN C
42. ELASH CN4 MODEL ONLY 1 O BK cup RELAY X1 SURGE ABSORBER 54 BR PROTECTION FLOAT SWITCH BIN CONTROL SWITCH DBU PRESSURE SWITCH Y SWITCH 06 05 WIRE COLOR CODE R RED BU B BLUE DBU DARK BLUE BR BROWN GY GRAY 180 LIGHT BLUE P P Y YELLOW V VIOLET BK 8 BLACK LBU W K amp LIGHT BLUEw WHITE _ w BLACK W BK j amp amp WHITEW BLACK Y BK YELLOWy BLACK WY 8 vYELLOW O BK ORANGBy BLACK BR W amp 8 BROWNw WHITE W R WHITEW RED BK W BLACKw WHITE DBU Y amp DA BLUEW YELLOW BK R BLACKw RED FM 481AWGE N 4 Normal Operation Bin Control BR PROTECTION LINE 20A NE GR Y 1 MODEL FOR NUGGET RUN CAP COMPRESSOR lul ONLY SURGE ABSORBER CN3 l 1 1 1 2 5 3 6 1 1 8 WATER SOLENOID 2 3 VALVE CONTROL 10 LBU W
43. HT BLUEw WHITE BR RELAY X1 P BK PINKw BLACK W BK amp 8 NHITEw BLACK Y BK YELLOWy BLACK W Y 4 WHITE wYELLOW O BK IBR W BROWNW WHITE W R WHITEw RED BK W BLACKw WHITE DBU Y DARK BLUEW YELLOW BK R BLACKw RED SURGE ABSORBER 52 FM 481AWGE N 2 Startup After completion of water supply Gear Motor and Fan Motor start 5 min L N GR Y PROTECTION 5 2212 5 5 52329 1 LINE 20A 5 599090090900 999000601 51011985 RUE 5 5 1 Ki O amp M 112131415 16171819 1121314151817131 COMPRESSOR RUN CAP BIN CONTROL SWITCH 5 DBU SURGE ABSORBER 5 21 PRESSURE S CAP eye SWITCH 8 L eR Y fo PROTECTION SWITCH See SS aa HH 12 7 CN3 1 1 51 1 2 5 7 a 8
44. L CONDENSER Fin and Tube type forced air cooling HEAT REJECTION 1325W EVAPORATOR Copper Tube on Oylinder REFRIGERANT CONTROL Thermostatic Expansion Valve REFRIGERANT CHARGE 404 505g Mechanical Bin Control Time Delay Controlled ICE MAKING WATER CONTROL Float Switch and Water Valve ELECTRICAL PROTECTION Class Appliance Manual reset 10A Circuit Breaker COMPRESSOR PROTECTION Auto reset Overload Protector Auto reset Pressure Switch GEAR MOTOR PROTECTION Manual reset Circuit Breaker Auto reset Thermal Protector LOW WATER PROTECTION Float Switch and Timer BIN CONTROL PROTECTION Mechanical Switch WEIGHT Net weight 86 kg Gross weight 98 kg PACKAGE Carton 671mm W x 820mm D x 910mm H OPERATION CONDITIONS AMBIENT TEMP WATER SUPPLY TEMP WATER SUPPLY PRESSURE 0 5 8 bar 0 05 0 8MPa We reserve the right to make changes in specifications and design without prior notice b FM 251AFE N AC SUPPLY VOLTAGE 1 PHASE 220 240V 50Hz AMPERAGE 5 4A Ambient temp STARTING AMPERAGE 19A ELECTRIC CONSUMPTION 830W Ambient temp POWER FACTOR 64 POWER SUPPLY CAPACITY Min 1 62 6 8A ICE PRODUCTION PER 24h Approx 236 kg Ambient temp 192 Ambient temp 158 kg Ambient temp WATER CONSUMPTION PER 24h 0 241 m Ambient temp 0 197 Ambient temp Approx 0 163 m Ambient temp MAX STORAGE CAPACITY Not Applicable DIMENSIONS DRAWING No 560 W x 700 D x 780 H EXTERIOR AE Xe M Steel Re
45. LBU W i DBU Y DBU Y WATER SOLENOID VHR VALVE BLASH LL O BK 5 5 OY 55 65599595995 59500055 LI p 224 11 11121314151511181911011 21314 15181713 816 CN Lu SEI d FLOAT SWITCH 180 Isl BIN CONTROL SWITCH DBU DBU PRESSURE 3 SWITCH Y Lo PROTECTION SWITCH Li 12 WIRE COLOR CODE R RE BU B BLUE DBU BLUE BR BROWN GY GRAY 180 LIGHT BLUE P YELLOW V VIOLET BK BLACK LBU W K amp LIGHT BLUEw WHITE P BK PINKw BLACK W BK 5 8 WHITEw BLACK Y BK YELLOWy BLACK W Y WHITE wYELLOW O BK ORANGEW BLACK BR W BROWNw WHITE W R WHITEw RED BK W amp 8 BLACKw WHITE DBU Y DARK BLUEw YELLOW BK R BLACKw RED BR FM 481 AWGE N 5 Shutdown Compressor stops 5 min PROTECTION LINE 20A GR Y RUN CAP COMPRESSOR THERMAL RELAY 32 FOR NUGGET MODBL ONLY PROTECTOR CAP
46. OLING FAN MOTOR The Fan Motor cools the Air cooled Condenser and sends air to condense refrigerant gas inside the Condenser 36 WATER REGULATOR WATER COOLED MODEL ONLY The Water Regulator controls the water flow in the Water cooled Condenser to maintain a certain level of the discharge pressure The discharge pressure may rise at startup but stabilize in 30 minutes The Water Regulator is factory adjusted adjustment is required under normal use except for replacement of the FM 481AWGE N Water Regulator Adjust the Water Regulator if necessary using the following procedures 1 Attach a pressure gauge to the high side line of the system Or prepare a thermometer to check the condenser center temperature 2 After 5 minutes of ice production the pressure gauge should read 18 bar or the thermometer read 38 40 C If the readings are lower use a flat blade screwdriver to adjust the screw in a counterclockwise direction If the readings are higher adjust in a clockwise direction Adjust the screw by a half turn only each time and recheck the readings before making further adjustments 3 Check that the pressure or the condenser center temperature remains steady at the recommended settings before removing the gauge or thermometer ADJUSTMENT SCREW ADJUSTMENT SCREW CW Lower CCW Higher Top View i DRIER The Drier uses desiccants molecular sieves activated alumina to absorb moisture in the
47. ON SWITCH BK R SURGE ABSORBBR L 1 2 3 16 1 WATER SOLENOID 2 VALVE CONTROL 5 E 190 lng 1 uu DBU Y lt DBU Y Lar l WATER SOLENOID VHR VALVE FLASH CN4 1 i O BK 15 FAN MOTOR Y BK THERMAL Li m PROTECTOR l RELAY X1 B ANS FORME 40 FLOAT SWITCH B BIN CONTROL SWITCH DBU PRESSURE SWITCH T PROTECTION SWITCH WIRE COLOR CODE R RED BU BLUE DBU DARK BLUE BROWN GY GRAY LBU LIGHT BLUE 1 X YELLOW VIOLET BK BLAC LBU W LIGHT BLUEW WHITE P BK PINKy BLACK W BK WHITBRy BLACK Y BK YELLOWw BLACK W Y WHITE wYELLOW O BK ORANGEw BLACK BR W BROWNY WHITE WR WHITEw RED DK W BLACKw WHITE DBU Y DARK BLUBw YBLLOW BK R BLACKw RED FM 251AFE N 2 Startup After completion of water supply Gear Motor and Fan Motor start 5 min GR Y BR 777 PROTECTION 7 LINE 103 00000000 359 9 gt 51611181 K2
48. ONTROL SWITCH BH Hj BU D DBU 6 feo WATER SOLENOID VALVE FLASH O BK FOR NUGGET MODEL ONLY 48 6 VER KARP WIRB COLOR CODE R RED BU BLUE DBU IDARK BLUE B BROWN GY GRAY LBU LIGHT BLUE P PINK Y YELLOW V VIOLET B BLACK LBU W_ LIGHT BLUEw WHITE P BK PINKw BLACK W BK WHITEw BLACK Y BK YELLOWw BLACK W Y WHITE ELLOW O BK ORANGEw BLACK BR W BROWNv WHITE W R WHITBw RED BK W BLACKw WHITE DBU Y DARK BLUEw YELLOW BK R BLACKw RED FM 481AGE N 4 Normal Operation Bin Control PROTECTION LINE FOA GR Y 77777 XY FILTER E START TO 61 1 THERMAL p THER PROTECTOR STARTER o m th tte eee 69599905996 999999060 LPTSTSTSTTISTSELOLIL2 112 3 T4TS T6 118 reus ea Ts Las oet AIM 11 nem CN10 1 BU 1180 p GY VET Ig LBU W C a 3 9 1 DBU Y RELAY X
49. OTOR EVAPORATOR WATER INLET het m se 1 E 2 7 CONTROL WATER VELVE XT CONDENSOR DRIER EXP V rz WATER OUTLET HEAT EXCHANGER 45 RESERVOIR FLUSH WATER VALVE Pressure Switch Cut out 28 5 1 5 0 bar Cut in 23 0 1 5 bar 22 FM 481 AWGE N COMPRESSOR ACCESS VALVE CONDENSOR WATER COOLED L INLET OF ge COND WATER EVAPORATOR 5 5 WATER REGULATOR FLOAT SWITCH CONTROL WATER VELVE HEAT EXCHANGER 680mm FLUSH WATER VALVE Pressure Switch Cut out 22 0 1 5 0 bar Cut in 18 0 1 5 bar 23 WATER OUTLET 2 WIRING DIAGRAM WIRING DIAGRAM FM 251AFE N L N GR Y LD RELAY 1 RENT 21 CAPACITOR XY FILTER L 2 92 9 9 72 x 27727292 j DID 121305161718 LBU STARTING 5 5 CAPACITOR 22 35 BU BR S
50. OWER RELAY CAPACITOR B M C3 CAPACITOR XY FILTER RC F FUSE C E OL OVERLOAD PROTECTOR F 51 BIN CONTROL SWITCH 52 PROTECTION SWITCH 52 OPERATION SWITCH TRANSFORMERI TRANSFORMER WV 1 CONTROL WATER VALVE WV FLUSH WATER VALVE M FAN MOTOR GM GEAR MOTOR CM COMPRESSOR PS PRESSURE SWITCH FS FLOAT SWITCH RS ROTATION SENSOR P CODE POWER CODE SC CAPACITOR STARTING RC RUN CAPACITOR SR STARTING RELAY 29 3 ICEMAKING MECHANISM HEX BOLT CUTTER EXTRUDING HEAD SOCKET HEAD CAP SCREW W PLASTIC SEAL BELT HEATER ium Ec gni EM 481AGE N FM 481AWGE N ONLY DRIP PAN AUGER CASING COUPLING ROTATION SENSOR SOCKET HEAD SCREW 2 i G 1 T 6 E EVAPORATOR CASING The Evaporator consists of a stainless steel icemaking cylinder coiled with a refrigeration pipe and wrapped together with a polyurethane foam insulation material Water coming from the inlet into the Evaporator will be frozen into ice The Ice Spout is located on top of the Evaporator The Deicing Heater Belt Heater around the top of the cylinder functions to reduce the load on the Gear Motor FM 481AGE N AWGE N only See 5 REFRIGERATION CIRCUIT for further details b AUGER The stainless steel Auger is supported by the upper and lower Bearings
51. TARTING AE 1 COMPRESSOR AAS L BR a BIN CONTROL SWITCH T DBU DBU Y FRESSURE ruse 3 15al ITCH 8 4 pi 1 PROTECTION SWITC IH Y 12 Y OPERATION SWITCH AS D BK R BU M xs 1 n W BK iw W Y 1 C WATER SOLENOID um VALVE CONTROL 5 Q6 5 LBU W LBU W Iz WIRE COLOR CODE 9 11 DBU Y DBU Y RELAY X2 E WATER SOLENOID B m TALE ERASE DBU DARK BLUE BR x BROWN O BK G LBU LIGHT BLUE R MOTOR P gt IN i Y YELLOW opas Y BK 8 BU V VIOLET THERMAL 8 BLACK L4 bike PROTECTOR LBU W LIGHT BLUEw WHITE TRANSFORMER 2 P BK NKw BLACK 0 230Y W BK WHITEw BLACK Y BK YELLOWg BLACK BU BU W Y amp R WHITE wYELLOW DIL O BK ORANCEw BLACK SURGE ABSORBER BR W BROWNw WHITE W R WELTEW RED E 4 BK W 8 8 BLACKw WHITE DBU Y E DARK BLUEw YELLOW BK R E h BLACKw RED 24 FM 481AGE N
52. TCH BK R 80 SURGE ABSORBER WATER SOLENOID VALVE CONTROL LBU W LBU W 101112 213141516 31 K2 51611 819 12141 CN11 we FLOAT SWITCH pep BIN CONTROL SWITCH DBU DBU PRESSURE SWITCH GEHGER BR 4 PROTECTIQN SWITCH 1 Y Y eere DBU Y DBU Y WATER SOLENOID VALVE FLASH IERMAL PROTECTOR 42 WIRE COLOR CODE R RED BU BLUE i DBU DARK BLUE BR BROWN GY GRAY LBU LIGHT BLUE PINK YELLOW V VIOLET BK BLAC LBU W LIGHT BLUEw WHITE P BK PINKw BLACK W BK WHITEw BLACK Y BK YELLOWw BLACK W Y WHITE wYELLOW O BK ORANGEW BLACK BR W BROWNw WHITE i W R WHITEw RED m BK W BLACKw WHITE DBU Y DARK BLUEw YELLOW BK R BLACKw RED FM 251AFE N 4 Normal Operation Bin Control R GR Y 1 BR COMPRESSOR 6 uF
53. age 10 We reserve the right to make changes in specifications and design without prior notice 4 FM 481 AWGE AC SUPPLY VOLTAGE AMPERAGE STARTING AMPERAGE ELECTRIC CONSUMPTION POWER FACTOR POWER SUPPLY CAPACITY ICE PRODUCTION PER 24h 1 PHASE 230V 50Hz 6 7A Ambient 30 5A 1321W Ambient 86 Min 3 1kVA 13 3A Approx 420 kg 380 kg Ambient Ambient Ambient Ambient 2 244 m Ambient 2 822 Ambient SHAPE OF ICE 257 STORAGE CAPACITY Not Applicable DIMENSIONS DRAWING No EXTERIOR INSULATION CONNECTION ELECTRIC WATER SUPPLY DRAIN ICE MAKING SYSTEM HARVESTING SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE BIN CONTROL SYSTEM ICE MAKING WATER CONTROL ELECTRICAL PROTECTION COMPRESSOR PROTECTION GEAR MOTOR PROTECTION LOW WATER PROTECTION BIN CONTROL PROTECTION WEIGHT PACKAGE ACCESSORIES OPERATION CONDITIONS AMBIENT TEMP WATER SUPPLY TEMP 560 W x 699 D x 780 H 348159 See Steel Rear Polyurethane Foam Y type Con with Plug Inlet G 3 4 Cond Inlet Rc 1 2 Outlet R 3 4 x 2 Cond Outlet Rc 3 8 Auger type Direct driven Auger 200W Gear Motor Hermetic Compressor Model RS80C2E CAZ 219 Water cooled Tube in Tube Type Copper Tube on Cylinder Thermostatic Expansion Valve R404A 450g Mechanical Bin Control Time Delay Controlled Float Switch and Water Valve Class Appliance Auto reset Overl
54. ant gas vaporized in the Evaporator to reduce the pressure inside the Evaporator compresses the refrigerant into high temperature high pressure gas and sends it out to the Condenser The hermetic type Compressor is efficient in refrigeration and the refrigeration circuit is designed to endure long hours of operation The Compressor is mounted on vibration damping rubber to prevent transmission of vibration In case of accidental overload the Case Thermostat or Overload Relay will shut down the Compressor The Reset Button must be pressed to reset the Overload Relay e EVAPORATOR CASING The Evaporator Casing is a thin and rigid stainless steel pipe tightly coiled around with a copper tube and solder finished The refrigerant flows through a very narrow path in the Expansion Valve with a sudden drop of pressure and evaporates by absorbing heat of vaporization from the Evaporator Casing water supplied inside the Evaporator Casing is deprived of heat and forms ice film which will be scraped and moved up by the Auger f CONDENSER The Condenser refrigerates and liquefies the high temperature high pressure refrigerant gas discharged from the Compressor into high pressure liquid refrigerant The Condenser is either air cooled or water cooled A dirty Condenser will significantly reduce the refrigeration efficiency and performance and will also shorten the service life of the components especially refrigeration circuit The Condense
55. ar INSULATION Polyurethane Foam CONNECTION ELECTRIC Y type Con with Plug WATER SUPPLY Inlet G 3 4 Connected at rear DRAIN Outlet R 3 4 x 2 Connected at rear HARVESTING SYSTEM Direct driven Auger 80W Gear Motor COMPRESSOR Hermetic Compressor 495W Model SC12DL CONDENSER Fin and Tube type forced air cooling HEAT REJECTION 1325W EVAPORATOR Copper Tube on Oylinder REFRIGERANT CONTROL Thermostatic Expansion Valve REFRIGERANT CHARGE 404 5050 Mechanical Bin Control Time Delay Controlled ICE MAKING WATER CONTROL Float Switch and Water Valve ELECTRICAL PROTECTION Class Appliance Manual reset 10A Circuit Breaker 13A Fuse built in UK Plug COMPRESSOR PROTECTION Auto reset Overload Protector Auto reset Pressure Switch GEAR MOTOR PROTECTION Manual reset Circuit Breaker Auto reset Thermal Protector LOW WATER PROTECTION Float Switch and Timer BIN CONTROL PROTECTION Mechanical Switch WEIGHT Net weight 86 kg Gross weight 98 kg Carton 671mm W 820mm D x 910mm H ACCESSORIES Scoop Installation Kit OPERATION CONDITIONS AMBIENT TEMP 5 40 C WATER SUPPLY TEMP 5 35 WATER SUPPLY PRESSURE 0 5 8 bar 0 05 0 8 We reserve the right to make changes in specifications and design without prior notice 481 AC SUPPLY VOLTAGE 1 PHASE 230V 50Hz AMPERAGE 7 5A Ambient STARTING AMPERAGE 30 5A ELECTRIC CONSUMPTION 1522W Ambient POWER FACTOR 88 POWER SUPPLY CAPACITY Min 3 1kVA 13 3A
56. ber gloves eye protectors apron etc for safe handling of the cleaner and sanitiser Use the cleaners and sanitisers recommended by Hoshizaki Contact your local Hoshizaki office for further details The instructions below give an example of those recommended cleaners and sanitisers Never mix cleaning and sanitising solutions in an attempt to shorten cleaning time Wipe off any splashed or spilt cleaner sanitiser immediately Do not use any ammonia type cleaners on any part of the icemaker STEP 1 Dilute the solutions with water as follows Cleaning solution Nickel Safe Ice Machine Cleaner by The Rectorseal Corporation or similar Prepare approximately 3 L of solution as directed on the container Sanitising solution 30 mL of 5 2596 sodium hypochlorite with 7 6 L of water or the Hoshizaki recommended sanitiser as directed on the container IMPORTANT For safety and maximum effectiveness use the solutions immediately after dilution lt STEP 2 gt Use the cleaning solution to remove lime deposits in the water system 1 Open the Plastic Access Flap on the Front Panel 2 Press the Stop Button to activate the flush cycle approx 10 minutes 3 Remove all ice from the Storage Bin to avoid contamination by the cleaner 18 4 Unplug icemaker Remove the and Front Panels 5 Remove the Cover of the Reservoir Remove any loose debris or scale 6 Carefully fill the Reservoir with the solution to t
57. between flake ice and nugget ice were available by replacing the Extruding Head and Cutter With the new models not only the Extruding Head and Cutter but also the refrigeration circuit is different between the flake ice model and nugget ice model To ensure the proper capacity and prevent a trouble with excessive ice production do not replace the Extruding Head and Cutter to change the ice type 2 DIMENSIONS CONNECTIONS 251 FM 251AFE N 5 697 E 418 97 94 DRAIN OUTLET 4 DRAIN OUTLET R3 4 POWER CORD 2000mm LONG OUTSIDE Top View BOTTOM ICE DISCHARGE HOLE b 481 AGE 481 697 PEL i ANSA 4 X H WM DOUG 4 WA d Y 0 D v 4 137100 Nivea t y 0 12171100 MM MA RM 0 AN 4 221 T 9 LJINI 414405 Slr 82 91 n3 NOLLOS 20151110 SNO 54440062 9902 g3MOd SIGH 39uvH23SId 321 13870 NIVHO 13810 CONO2 9 224 13110 Jim
58. bove low voltage sensor reset level Abnormal low voltage 9 Displaying Freeze Cycle Time The five most recent freeze cycles are memorized and will be deleted by turning OFF the Operation Switch Keep pressing the Option Button in the ICE or STOP mode The Display Window will show the compressor operating hours b 3 Press and release the Ice Button to display the freeze cycle time max five cycles Release the Option Button to return to the original mode The freeze cycle time is displayed with two digits each for minutes o E 0 9 and seconds 0 5 0 9 Minutes 0 0 9 0 9 0 9 10 19 6 0 9 20 29 min 0 9 30 39min d 0 9 40 49 min 0 9 50 59min 5 0 5 0 9 Example o 9 4 8 9 minutes 48 seconds b 7 3 6 27 minutes 36 seconds An approximate ice production capacity can be calculated from the freeze cycle time Flake Ice production capacity kg d 65 000 cycle time sec Nugget Ice production capacity kg d 55 000 cycle time sec This is just an approximate ice production capacity The capacity depends on ambient temperature water temperature voltage and frequency determine an accurate capacity use a container to receive ice produced for 10 minutes measure its weight and convert it into daily production three measurem
59. e whole Bin Control Switch assembly 59 ACTUATOR i CHUTE SWITCH The Chute Switch consists of a microswitch and a band securing the Spout and Chute When the Bin Control Switch breaks down the band opens and presses the button on the microswitch contacts open to stop the icemaker error code EL To restart the icemaker remove ice from the Spout and Chute and move the Operation Switch to the STOP position then to the RUN position Normal Condition Band Microswitch Spout Abnormal Condition Band moves and presses microswitch Band 22 Microswitch Chute Spout j DEICING HEATER BELT HEATER FM 481AGE N AWGE N ONLY The Deicing Heater is provided to reduce the load of ice passing the Extruding Head and prevent vapor lock If the Extruding Head is clogged with ice a creaking sound will be heard or the Evaporator Cylinder will expand to break the soldered joint between the Cylinder and Copper Tube where condensate may enter and freeze to crush the Copper Tube the previous models the Flange was welded to secure the Spout which may cause cracked welded joints 60 7 OPERATION BOARD EA Joo SERVICE CALL 984 LE ond indow Pane T rot Ihe insiniction manual
60. ector which will not reset until the temperature goes down 65 2 Gear Motor Rotation Sensor Counts the motor rotation time in every cycle Controls to reduce the load by flowing hot gas when the rotation slows down Shuts down the icemaker when the rotation slows down further Thermal Protector Provided on the motor coil Operates when the motor temperature rises protector is auto reset but the controller shuts down the icemaker Press the Reset Button to restart The above protectors indicate Ed or EE When Ed or EE appears ten times EJ will be displayed The Evaporator has been frequently overloaded This could result in an excessively worn Gear or a broken screw on the Housing 3 Fan Motor The auto reset Fuse attached to the motor coil will operate when the motor temperature rises For the air cooled models the High Pressure Switch will turn on and off the icemaker 4 may appear in the Display Window 4 Overcurrent Protector Trips to shut down the icemaker in case of overcurrent conditions Manual reset 5 Chute Switch If the Bin Control Switch fails to operate the Spout and Chute will be clogged with ice and disconnected to spill ice The Chute Switch is installed to prevent this trouble EL will appear in the Display Window when the Chute Switch operates 6 Low Water In case of low water or clogged water supply circuit the icemaker will shut down unless the Float Switch tr
61. ents and calculate their average 64 10 Reducing Compressor Startup Time With the Operation Switch in the OFF position keep pressing the Option Button and turn ON the Operation Switch Release the Option Button when the Display Window shows the ICE mode The Compressor will start up about 30 seconds after completion of water supply 8 PROTECTORS a INDICATION When an error occurs E or c will appear in the Display Window Some of the c errors are not displayed and must be checked with error records OPERATION SWITCH When an operational error occurs E will appear and blink in the Display Window on the Operation Board and the icemaker will stop When a service call is received ask the user to check which error code is in the Display Window Then see the error code table in 9 ERROR CODES to locate the cause b PROTECTORS 1 Compressor Internal Inherent Motor Protector Senses a temperature rise of the Compressor and internally shuts off the circuit Automatically resets when the temperature goes down If the Compressor takes a long time to restart the Ice Production Timer may shut down the unit with E1 in the Display Window n this case press the Reset Button Internal Pressure Relief Valve Allows discharge gas into the low side to prevent damage to the Compressor when the discharge pressure rises excessively The bypassed gas will trip the above mentioned Internal Inherent Motor Prot
62. er edge of the Housing 21 Remove the four Bolts and lift the Housing clear of the Gear Motor Check the Bearing inside the Housing If itis worn or scratched replace it using a fitting tool Carefully ease out the lower part of the Mechanical Seal before replacing the Bearing Note If a fitting tool is not available replace the whole Lower Housing complete with Bearing 88 GEAR MOTOR 22 Cut the Connectors 23 Remove the three Socket Head Cap Screws securing the Gear Motor 24 Assemble the removed parts in the reverse order of which they were removed WARNING Be careful not to scratch the surface of the O ring or it may cause water leaks Handle the Mechanical Seal with care not to scratch nor to contaminate its contact surface 25 When replacing the Evaporator a Braze the new Evaporator with nitrogen gas flowing at the pressure of 0 2 0 3 bar b Replace the Drier c Check for leaks using nitrogen gas 10 bar and soap bubbles d Evacuate the system and charge it with refrigerant See the Nameplate for the required refrigerant charge See 1 EVACUATION AND RECHARGE 26 Refit the panels in their correct position 27 Connect the power source 89 Rubber 7 7 gt Rubber O ring Flange Socket Head X Cap Screw t Belt Heater FM 481AGE N AWGE N only Mechanical Seal Gear Motor Cover Gear Motor 8 CONTROL WATER VALVE 1 Disconnect t
63. eset 5 Displaying Error Record Keep pressing the Option Button in the ICE or STOP mode The Display Window will show the compressor operating hours b 3 Press and release the Stop Button to display the error record A maximum of eight most recent errors will be displayed in reverse order of occurrence including those not informed to the user shows the end of the error record Release the Option Button to return to the original mode 62 6 Displaying Ongoing Error Keep pressing the Option Button in the ICE or STOP mode The Display Window will show the compressor operating hours b 3 Press and release the Stop Button to display the error record b 5 The most recent errors will be displayed in reverse order of occurrence When appears press and release the Stop Button The Display Window will show the ongoing error Release the Option Button to return to the original mode 7 Resetting Error Record Before resetting the errors record them on the Inspection Record attached to the Front Panel With the Operation Switch in the OFF position keep pressing the Stop Option Buttons together and turn ON the Operation Switch Release the Buttons when the Display Window shows the ICE mode The error record has been reset NOT use this command unless necessary 8 Displaying Gear Motor Errors Keep pressing the Option Button in the ICE or STOP mode The Display Window will
64. h as calcium magnesium and silica contained in water will attach and deposit inside the Evaporator Casing to reduce the ice production capacity or accelerate wear on the moving parts 58 SURGE ABSORBER The Surge Absorber is provided to protect the Controller Board from lightning g CAPACITOR XY FILTER The Capacitor XY Filter is provided to prevent the Controller Board from signal errors caused by internal and external noises h BIN CONTROL SWITCH BIN CONTROL The Bin Control Switch is composed of a Proximity Switch and Actuator When the Chute fills up ice will push up the Actuator on top of the Chute to switch off the Proximity Switch After 7 seconds the Controller Board will stop the Gear Motor and Compressor at the same time When ice is used the Actuator will return to the original position to switch on the Proximity Switch The Gear Motor will restart in 7 seconds and the Compressor in 5 minutes When the Bin Control Switch seems to have malfunctioned check the dimensions of the Actuator as well as the operation of the Proximity Switch Also if the Chute Switch or the Gear Motor Circuit Protector has operated for some unidentified reason be sure to check the Actuator for proper dimensions 1 Remove the Bin Control Switch from the Chute 2 Move the Actuator to the maximum operation angle as shown below top Check that the Actuator is about 13 mm away from the Barrier If not replace th
65. he overflow point If necessary use a small brush to clean the inside of the Reservoir 7 Refit the Reservoir Cover 8 Check that the Operation Switch is in the RUN position 9 Loose fit the Front and Top Panels 10 Allow the icemaker to stand for about 10 minutes then plug in the icemaker to make ice with the solution 11 With the water supply tap open allow the machine to continue icemaking for a further 20 minutes Open the Access Flap and press the Stop Button 12 Allow time for the Gear Motor to stop and the water system to drain 13 Unplug the icemaker 14 Refit the Top and Front Panels Plug in the icemaker 15 Allow the icemaker to make ice for approximately 10 minutes 16 Pour warm water into the Storage Bin to melt any ice down the drain Note 1 If the machine has heavy deposits of scale repeat the complete cleaning procedure 2 Do not increase the proportion of cleaning solution to shorten cleaning times as this may lock the Auger when completing item 10 lt STEP 3 gt Note Sanitising should always be completed after cleaning or alternately as an individual procedure if conditions exist to make it necessary Use 2 8 lit of the sanitising solution to sanitise the icemaker 17 Follow items 1 to 16 to complete sanitisation of the water system 19 8 PERIODICAL CLEANING 1 Machine and Bin Exterior Wipe the exterior at least once per week with a clean soft cloth Use a damp cloth containing a
66. he power source 2 Close the water supply tap 3 Remove the panels 4 Disconnect the Terminals from the Control Water Valve 5 Remove the Cover Reservoir Inlet from the Control Water Valve 6 Loosen the Fitting Nut on the Control Water Valve Inlets and remove the Control Water Valve Do not lose the Packings inside the Fitting Nut 7 Install the new Control Water Valve 8 Assemble the removed parts in the reverse order of which they were removed 9 Open the water supply tap 10 Connect the power source 11 Check for water leaks 12 Refit the panels in their correct position 91 9 FLUSH WATER VALVE 1 Close the water supply tap 2 Remove the panels 3 Push the Stop Button and after 5 minutes disconnect the power source 4 Remove the Clamp and disconnect the Hose from the Flush Water Valve Note Water may still remain inside the Evaporator Be sure to drain the water into the Drain Pan 5 Disconnect the Terminals from the Flush Water Valve 6 Remove the Flush Water Valve from the Bracket 7 Remove the Drain Pipe from the Flush Water Valve 8 Connect the Drain Pipe to the new Flush Water Valve and place the valve in position 9 Connect the Hose to the Flush Water Valve and secure it with the Clamp 10 Pour water into the Reservoir and check for water leaks on the Flush Water Valve 11 Open the water supply tap 12 Connect the power source 13 Check for water leaks 14 Push the Stop Button and make su
67. hours in total and continuously for more than 10 minutes the icemaker supplies water until the Reservoir fills up and starts a drain cycle After 10 minutes the icemaker automatically starts water supply and resumes icemaking operation b TIMING CHART Bin Control Stop Button Ice Button Trip Reset ON ___ Ice Button m Water Level Float Switch Control VVater Valve Fan Motor Gear Motor OFF 5 min i T gt 5 min ON Compressor OFF ON Bin Control Switch OFF 38 Low Water Control Trip Reset ON T T T Ice Button OFF High min 5 min 15 min 5 min gt gt gt Water Level Low None Float Switch 7 NS Control Water ON 77 C 77 7 Valve OFF Fan Motor ON Gear Motor OFF ON Compressor OFF Bin Control Switch OFF 39 c SEQUENCE FM 251AFE N 1 Startup Water Supply PROTECTION LINE 10 GR Y 18 BR COMPRESSOR pa 4T T 14131415 CNIL y BR W THERMAL PROTECTOR 6 OPERATI
68. icemaker is shut down the Water Regulator is closed with a low condensing pressure Sending air in this condition will not drain the water from the Condenser 5 REFRIGERATION CIRCUIT a APPLICABLE PARTS FM 251AFE N FM 481AGE N FM 481AWGE N Refrigerant R404A X X X Compressor X Evaporator Casing Air cooled Condenser X X Water cooled Condenser X Air cooled Condenser x Fan Motor Water Regulator X Drier X X X Thermal Expansion Valve x with MOP Heat Exchanger X X b SERVICE INSTRUCTIONS Always restore the original bindings after servicing the refrigeration circuit Otherwise vibration may cause overstress and damage to the circuit resulting in refrigerant leak After replacing the Evaporator or Auger run the icemaker for 30 minutes to produce ice check for impurities and discard 34 c REFRIGERANT The icemaker employs refrigerant R404A which itself is not flammable or poisonous However a small room filled with R404A may cause suffocation with a lack of oxygen Also when exposed to an open flame R404A creates Phosgene gas hazardous in large amounts Handle the refrigerant in a well ventilated area with no flames Always recover the refrigerant and store it in a proper container if required by an applicable law Do not discharge the refrigerant into the atmosphere d COMPRESSOR The Compressor absorbs the low pressure refriger
69. ill detect overload by reduction in Gear Motor rotation speed and partly bypass the refrigerant flow the refrigeration circuit This will temporarily reduce the ice production to avoid the overload condition c OVERLOAD ERROR When the above protection fails to evade the overload condition and the Gear Motor has a high current and a low rotation speed the icemaker will shut down for protection The icemaking mechanism will have extensive damage if this condition is repeated ten times In this case the icemaker will display an error code to notify the user of the excessive load on the icemaking mechanism and the need of its replacement d USER RESET When protector trips to shut down the icemaker an error code will be displayed lf it is resettable error the user can restart the icemaker by pressing the Reset Button accessible from the Window Panel and continue the icemaking operation until a service person arrives Some errors are non resettable or repetitive and require troubleshooting by qualified personnel e ERROR CODES AND RECORDS When the icemaker shuts down with an error the Display Window will show an error code E A maximum of eight most recent records are memorized and can be checked at the time of service or inspection OTHER INFORMATION Other information is also available from the Controller Board See 1 7 OPERATION BOARD for details g CHANGE OF ICE TYPE With the older models changes
70. ips at the upper float level within 5 minutes after tripping at the lower float level The Water Valve will open and close every 5 minutes until the Float Switch trips at the upper float level The record of low water is indicated by the code c1 when the Option and Stop Buttons are pressed in servicing 7 Ice Production Timer Detects reduction in ice production capacity unless the Float Switch trips at the lower float level within 30 minutes for the first freeze cycle and 15 minutes for the second and subsequent cycles after tripping at the upper float level E1 will appear in the Display Window 66 8 Water Leak Detects a water leak if the water level goes down with the Compressor out of operation after the first water supply cycle i e no ice production EO will appear in the Display Window 9 Float Switch The Float Switch or connector may have a bad contact if the Float Switch trips at the upper float level but not at the lower float level with the Flush Water Valve closed E2 will appear in the Display Window 10 High Pressure Switch Operates at a high condensing pressure when the air cooled model has a clogged Air Filter or a dirty Condenser or the water cooled model is in a low water condition or has a dirty heat exchanger inside the Condenser 4 will appear in the Display Window when the Pressure Switch trips five times within an hour 11 Voltage If the supply voltage is too low the Compressor may fail t
71. itis scratched or worn where it has contacted the Evaporator replace it EVAPORATOR Note Skip the following steps 12 through 14 when the Evaporator does not need replacement 87 12 Recover the refrigerant and store it in a proper container if required by an applicable law 1 b REFRIGERANT RECOVERY IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened Do not replace the Drier until after all other repair or replacement has been made 13 Remove the Bulb of the Expansion Valve 14 Disconnect the brazing connections of the Expansion Valve and the Copper Tube Low Side from the Evaporator using brazing equipment WARNING Always protect the valve body by using a damp cloth to prevent the valve from overheating Do not braze with the valve body exceeding 120 C 15 Remove the two Truss Head Machine Screws and the Strap securing the Evaporator 16 Disconnect the three Hoses from the Evaporator 17 Remove the four Socket Head Cap Screws securing the Evaporator with the Bearing Lower 18 Lift off the Evaporator BEARING LOWER AND MECHANICAL SEAL 19 The Mechanical Seal consists of two parts One part rotates with the Auger the other is static and is fitted into a top recess in the Housing If the contact surfaces of these two parts become worn or scratched the Mechanical Seal may leak water and should be replaced 20 Remove the O ring on the top out
72. l Bin Control Protective Whole unit Press Reset Low Voltage Sensing Low Voltage Sensing Whole unit Press Reset Low Voltage Sensing Transformer Transformer circuit is open stops Button Transformer Circuit Open Controller Whole unit Press Reset Model setting Board Model Unacceptable supply Setting Error stops Button Supply frequency Controller Whole unit Press Reset Replace Controller Press Reset Electric Leak Whole unit Button Short Circuit Electric leak or overcurrent stops Replace Electric leak Fuse Fuse Non Interlock Errors Eror Condition Operation Reset Check Repair CM Microcomputer Microcomputer fails to Memory circuit Replace i Time Read Write Controller Error read write properly not available Board operating hours not available on display Water supply continues Whole unit stops Water supply for more than 90 until Reservoir interruption Control seconds or Float Switch fills up Only resete after Water Valve not Low Water trips at lower float level Control Water ro opening Flush Reservoir fills and does not reset for Valve operates Water Valve not more than 60 seconds intermittently for 5 closing Float after water supply minutes Switch Water leak condenser clogged Cooling water circuit Refrigeration circuit Automatically Abnormal High Pressure Switch stays Side Pressure OFF for 5
73. l clog the capillary tubing 5 Service Parts for R404A Some parts used for refrigerants other than R404A similar to those for R404A But never use any parts unless they are specified for R404A because their endurance against the refrigerant have not been evaluated Also for R404A do not use any parts that have been used for other refrigerants Otherwise wax and chlorine remaining on the parts may adversely affect R404A 6 Replacement Copper Tubing R404A The copper tubes currently in use are suitable for 404 But do not use them if oily inside The residual oil in copper tubes should be as little as possible Low residual oil type copper tubes are used in the shipped units 80 Evacuation Vacuum Pump and Refrigerant Charge 84044 Never allow the oil in the vacuum pump to flow backward The vacuum level and vacuum pump may be the same as those for the current refrigerants However the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for R404A 8 Refrigerant Leak Check Refrigerant leaks can be detected by charging the unit with a little refrigerant raising the pressure with nitrogen and using an electronic detector Do not use air or oxygen instead of nitrogen for this purpose or rise in pressure as well as in temperature may cause R404A to suddenly react with oxygen and explode Be sure to use nitrogen to prevent explosion b REFRIGERANT RECOVERY The
74. mber or press the Stop Button to decrease the 61 number until it matches the Model Setting No on the wiring label Press the Set Button again to complete the setting and start icemaking operation in the ICE mode 2 Displaying Model Setting No Keep pressing the Option Button in the ICE or STOP mode The Display Window will show the compressor operating hours b 3 Press and release the Ice Button The Display Window will show the freeze cycle time b 9 When appears press and release the Ice Button The Display Window will show the active Model Setting No Release the Option Button to return to the original mode 3 Displaying Compressor Operating Hours Keep pressing the Option Button in the ICE or STOP mode The Display Window will show the compressor operating hours 00 indicates the operating hours less than 1 000 hours 01 indicates not less than 1 000 hours but less than 2 000 hours 25 indicates less than 25 000 hours but less than 26 000 hours 4 Resetting Compressor Operating Hours Do NOT use this command unless necessary With the Operation Switch in the OFF position keep pressing the Ice Stop Option Buttons together and turn ON the Operation Switch Release the Buttons when the Display Window shows the ICE mode The Compressor will start 15 seconds after completion of water supply The Hot Gas Valve will not open The compressor operating hours has been r
75. n Oylinder REFRIGERANT CONTROL Thermostatic Expansion Valve REFRIGERANT CHARGE 404 7700 Mechanical Bin Control Time Delay Controlled ICE MAKING WATER CONTROL Float Switch and Water Valve ELECTRICAL PROTECTION Class Appliance COMPRESSOR PROTECTION Auto reset Overload Protector Auto reset Pressure Switch GEAR MOTOR PROTECTION Manual reset Circuit Breaker Auto reset Thermal Protector LOW WATER PROTECTION Float Switch and CM Controller BIN CONTROL PROTECTION Mechanical Switch WEIGHT Net weight 97 kg Gross weight 118 kg PACKAGE Carton 671mm W x 820mm D x 910mm H ACCESSORIES Scoop Mounting Bracket Installation Kit OPERATION CONDITIONS AMBIENT TEMP 5 40 C WATER SUPPLY TEMP 5 35 C WATER SUPPLY PRESSURE 0 5 8 bar 0 05 0 8MPa VOLTAGE RANGE Rated Voltage 10 We reserve the right to make changes in specifications and design without prior notice 11 f 481 AWGE N AC SUPPLY VOLTAGE AMPERAGE STARTING AMPERAGE ELECTRIC CONSUMPTION POWER FACTOR POWER SUPPLY CAPACITY ICE PRODUCTION PER 24h 1 PHASE 230V 50Hz 6 74A Ambient 30 5A 1356W Ambient 8796 Min 2 0kVA 8 74 Approx 380 kg 350 kg Ambient Ambient Ambient Ambient Ambient Ambient SHAPE OF ICE MAX STORAGE CAPACITY Not Applicable DIMENSIONS DRAWING No EXTERIOR INSULATION CONNECTION ELECTRIC WATER SUPPLY DRAIN ICE MAKING SYSTEM HARVESTING SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL
76. n a specific time after the Float Switch sends an OFF signal the icemaker will detect a low water condition and shut down The icemaker will automatically restart icemaking operation when the proper water level is resumed If the Float Switch trips at the upper float level on startup and trips at the lower float level request for water supply before the Compressor starts the icemaker will display EO for a water leak error and shut down If the Float Switch trips at the upper float level and does not trip at the lower float level the icemaker will display E1 for a low ice production error and shut down If the Float Switch trips at both upper fill and lower empty float levels the icemaker will display E2 for a switch contact error and shut down See 9 ERROR CODES for details c CONTROL WATER VALVE The Control Water Valve located above the Reservoir will open to supply water to the 32 Reservoir when the coil is energized Despite the water pressure varying from 0 5 bar to 8 bar at the water supply inlet the built in flow controller maintains almost the same water flow 24V AC d FLUSH WATER VALVE When the Flush Timer operates or the Stop Button is pressed to shut down the icemaker the Flush Water Valve will be energized to open and flush out the Evaporator Casing and Reservoir 21 7V DC e WATER REGULATOR See 5 REFRIGERATION CIRCUIT DRAINING ICEMAKER IN SUBFREEZING CONDITIONS In winter
77. nstall the new Drier 10 Check for leaks using nitrogen gas 10 bar and soap bubbles 11 Connect the Flare connections 12 Evacuate the system and charge it with refrigerant See the Nameplate for the required refrigerant charge 13 Open the water supply tap 14 Plug in the icemaker 15 Check for water leaks 16 See 11 5 h WATER REGULATOR If necessary adjust the valve 17 Replace the panels in position 86 7 ASSEMBLY 1 Push the Stop Button to drain the water in the Evaporator 2 Disconnect the power source 3 Remove the panels 4 Remove the Band connecting the Spout with the Chute Assembly 5 Remove the three Thumbscrews and take off the Spout from the Evaporator CUTTER 6 Remove the Bolt and lift off the Cutter 7 Remove the Rubber O ring and the Nylon Ring at the top of the Evaporator BELT HEATER FM 481AGE N AWGE N ONLY 8 Detach the spring and remove the Belt Heater EXTRUDING HEAD 9 Remove the three Socket Head Cap Screws and lift off the Extruding Head 10 Check the Bearing inside the Extruding Head If it is worn out or scratched replace the Bearing Note Replacing the Bearing needs a fitting tool If it is not available replace the whole Extruding Head AUGER 11 Lift out the Auger Check the top and bottom areas in contact with the Bearings If the surface is scratched or pitted replace the Auger Check the blade edge of the Auger If
78. o start properly or the Gear Motor may lock to cause freeze up inside the Evaporator To prevent these troubles the icemaker will shut down and wait until the proper voltage is restored EF will appear in the Display Window 67 9 ERROR CODES Interlock Errors Code Condition Operation Reset Check Repair Following initial water supply Float Switch trips at lower float level after Gear Motor starts and before Compressor starts Water leak Flush Water Valve not closing Float Switch Whole unit Press Reset stops Button Icemaking Water Leak Gas leak Control Icemaking cycle takes too Whole unit Press Reset Water Valve not Production long stops Button closing Vapor lock Freeze up Float Switch With Flush Water Valve Float Switch OFF Float Switch trips at Whole unit Press Reset both upper and lower float stops Button levels for 2 seconds Gear Motor is ON with Gear Motor Rotation Sensor or Current Error or Gear Sensor circuit open Whole unit Press Reset Float Switch Rotation Sensor Current Sensor Gear Motor protective Motor Sensor Gear Motor Relay is ON stops Button circuit TPO Overload Circuit Open with Gear Motor protective circuit detector OFF ete Condenser clogged Water supply Installation conditions Side Pressure operation Gear Motor is OFF on Gear Motor Controller Board while Drive Element Rotation Sensor signals Miswiring Gear M
79. oad Protector Auto reset Pressure Switch Manual reset Circuit Breaker Auto reset Thermal Protector Float Switch and CM Controller Mechanical Switch Net weight 97 kg Gross weight 118 kg Carton 671mm W x 820mm D x 910mm H Scoop Mounting Bracket Installation Kit Connected at rear side Connected at rear side Connected at rear side Connected at rear side 5 40 C 5 35 C WATER SUPPLY PRESSURE 0 5 8 bar 0 05 0 8MPa VOLTAGE RANGE Rated Voltage 10 We reserve the right to make changes in specifications and design without prior notice 10 481 AC SUPPLY VOLTAGE 1 PHASE 230V 50Hz AMPERAGE 7 15A Ambient STARTING AMPERAGE 30 5A ELECTRIC CONSUMPTION 1464W Ambient POWER FACTOR 8996 POWER SUPPLY CAPACITY Min 2 2kVA 9 6 ICE PRODUCTION PER 24h Approx 430 kg Ambient 360 kg Ambient Ambient Ambient 0 360 Ambient 0 290 m Ambient MAX STORAGE CAPACITY Not Applicable DIMENSIONS DRAWING No 560 W x 699 D x 780 H 350938 EXTERIOR 2 UR Steel Rear INSULATION Polyurethane Foam CONNECTION ELECTRIC Y type Con with Plug WATER SUPPLY Inlet G 3 4 Connected at rear side DRAIN Outlet 3 4 x 2 Connected at rear side HARVESTING SYSTEM Direct driven Auger 200W Gear Motor COMPRESSOR Hermetic Compressor Model RS80C2E CAZ 219 CONDENSER Fin and Tube type forced air cooling HEAT REJECTION 2500W Ambient temp 32 Water temp 21 EVAPORATOR Copper Tube o
80. of the Evaporator and slowly rotated by the Gear Motor while scraping off the ice forming on the inner wall of the Cylinder and pushing up to the Ice Spout 30 c EXTRUDING HEAD BEARING The stainless steel Extruding Head is provided with a press fit plastic Bearing inside and fixed on top of the Evaporator The Extruding Head functions as the Auger Bearing and compresses the sherbet ice carried up by the Auger into a column shape with the path resistance d HOUSING The cast bronze Housing is provided with a press fit plastic Bearing inside and fixed on the bottom of the Evaporator for connection with the Gear Motor e MECHANICAL SEAL The Mechanical Seal on the lower Auger Bearing prevents icemaking water leaks into the Evaporator The mating surfaces are made of ceramic and carbon f COUPLING SPLINE JOINT The Auger bottom and Gear Motor output shaft are splined and connected with the Spline Joint g GEAR MOTOR The Gear Motor consists of a 1 phase 240V drive motor integrated with a decelerator and provided with a built in auto reset Thermal Protector When the Thermal Protector trips the Controller Board will stop the Gear Motor The Protector can be reset by the Reset Button on the Operation Board The Thermal Protector trips when the Gear Motor mechanism is overloaded or when excessively high or low voltage is applied on the Gear Motor The electrical capacity must be increased if a large current flows through the surr
81. on e nnne n nnn 31 h BELT HEATER 31 i REMOVABLE FLANGE 31 SOCKET HEAD CAP SCREW 32 4 WATER CIRCUIT 32 a RESERVOIR WATER TANK 32 0 FLOAT SWITCH nenne n nennen n e nnne 32 c CONTROL WATER VALVE 32 d FLUSH WATER VALVE 33 e WATER REGULATOR 33 DRAINING ICEMAKER SUBFREEZING CONDITIONS 33 5 REFRIGERATION CIRCUIT 34 a APPLICABLE PARTS 34 0 SERVICE INSTRUCTIONS en 34 c REFRIGERANT eene nennen e nnne 35 d COMPRESSOR 35 e EVAPORATOR CASING 35 f CONDENSER ee esee e nnne nnn n n nnne 35 9 CONDENSER COOLING FAN MOTOR 36 h WATER REGULATOR 37 i DRIER eene e nennen nennen 37 i THERMOSTATIC EXPANSION VALVE 37 6 ELECTRIC CIRCUIT 38 a BASIC OPERATION aR eaea 38 TIMING CHART e nennen n nennen n e nnne 38 SEQUENCE 40 d OPERATION BOARD aain 58 e CONTROLLER 58 f SURGE ABSORBER siirinsesi 59 0 CAPACITOR XY FILTER Hensies naaa 59 h BIN CONTROL SWITCH
82. otor Whole unit Press Reset Magnet Switch or Relay Gear Motor rotation or stops Button Replace Controller Board current flows Discharge Pipe Thermostat Whole unit Press Reset Gas leak Compressor ER is OFF stops Button Cooling Fan failure Temperature Water Temperature Water Temperature Thermistor Thermistor circuit is open MA Thermistor Circuit Open Condenser Condenser Center Condenser Center Thermistor Thermistor circuit is open Ep pinks MA Thermistor Circuit Open Resistor Circuit di Whole unit Press Reset Abnormal Gear Whole unit Press Reset Gear Motor locked Motor Current Motor 9 stops Button hunting or overloaded Rotation Sensor detects Gear Motor reversing Gear Motor locked Fan Motor Cooling water circuit 1 C2 error occurs 5 times in 1 HE Abnormal High hour of Compressor E4 blinks N A Refrigeration circuit Rotation rate reduces with Whole unit Press Reset Rotation current higher than setting stops Button unting reversing or overloaded and voltage exceeding low voltage reset setting 68 Code ___ Condition Operation Reset Frequent C3 error occurs 3 times in Whole unit Press Reset EF Voltage Error 24 hours stops Button Supply voltage Gear Motor Ed and occur 10 times Replace Evaporator EJ Failure in total EJ blinks N A and Gear Motor Precaution Bin Contro
83. ounding equipment h BELT HEATER FM 481AGE N AWGE N ONLY The Belt Heater is provided to reduce the load of ice passing the Extruding Head during a freeze cycle and to prevent vapor lock during a flush cycle i REMOVABLE FLANGE The Flange used to be welded on the Evaporator to fix the Spout But sometimes the Extruding Head applies excessive load on the Evaporator to compress ice resulting in breaking the welded joints avoid the load the Flange has been changed to a separate part to be secured together with the Extruding Head by using a socket head cap screw 31 SOCKET HEAD SCREW Sometimes the icemaking operation may produce white solids on the Drip Pan They are deposits of silica and calcium contents in the icemaking water leaking from the socket head cap screw The screw is provided with retaining and sealing functions which may be reduced by the load and vibration during a freeze cycle Do not reuse a removed socket head cap screw Solids deposited from socket head cap screw 4 WATER CIRCUIT a RESERVOIR WATER TANK The Reservoir made of plastic maintains the water level necessary for ice production b FLOAT SWITCH The Reservoir is provided with a plastic Float Switch to detect the water level The floats move up and down along with the water level and send ON OFF signals to open close the Water Valve in order to maintain the proper water level If the proper water level cannot be resumed withi
84. r 1 Tripped Find out the cause resolve it 5 Gear Motor and Compressor start but no ice is produced tripped c Power Supply 1 Circuit Ampacity too Protector and press Reset Button on Thermal Motor Protector Breaker c Controller Board 1 Broken 1 Replace d Pressure Switch 1 Dirty Condenser fins 1 Clean 2 Ambient temperature 2 Check for recommended too warm temperature 3 Fan not rotating 3 See 3 1 a 4 Condenser water 4 Check and get recommended pressure too low or pressure off 5 Water Regulating 5 Clean Valve clogged 6 Refrigerant 6 Recharge overcharged 7 Refrigerant line or 7 Clean and replace Drier components plugged 8 Bad contacts 8 Check for continuity and replace 9 Loose connections 9 Tighten e Thermostat 1 Ambient temperature 1 Check for recommended Water cooled too warm temperature Model 2 Compressor Cooling 2 Replace Fan Motor defective 3 Bad contacts 3 Check for continuity and replace 4 Loose connections 4 Tighten 4 Gear Motor a X1 and X2 1 Bad contacts 1 Check for continuity and starts but Relays replace Controller Board Compressor will 2 Coil winding opened 2 Replace Controller Board not start or b Compressor 1 Loose connections 1 Tighten operates 2 Motor winding opened 2 Replace intermittently or earthed 3 Motor Protector 3 Find
85. r must be cleaned according to the following instructions The frequency of cleaning depends on the installation conditions a Air cooled Condenser Fin and tube type A copper tube is attached on a finned aluminum plate with high heat conductivity to promote heat radiation and a Fan Motor is also provided for forced air cooling remote type Condenser is also available to protect the interior from noise of the Fan Motor and temperature rise by heat radiation Use a vacuum cleaner or brush to remove dirt and dust between the fins careful not to bend the fins 35 b Water cooled Condenser Tube in tube type Cooling water flows in the inner tube and refrigerant gas flows in the outer tube in opposite directions counterflow for efficient heat exchange The valve position of the Water Regulator is automatically controlled to regulate the discharge pressure in the refrigerant circuit and change the flow rate of cooling water Scale slime and corrosion will affect heat exchange Scale such as silica and iron oxide is the most common cause of problems and must be removed if any Dissolve a scale remover in cold or warm water and chemically remove scale inside the Condenser by either of the following procedures Procedure 1 gt Leave the above cleaning solution inside the Condenser for 12 hours Procedure 2 1 Prepare the following Pump Motor May be used for another icemaker Dissolving Tank
86. re water is flushing 15 Push the Ice Button 16 Refit the panels in their correct position 92 10 CONTROLLER BOARD IMPORTANT A single type Controller Board is supplied as a Service Board Some modifications and adjustment will be required to fit the icemaker models Do not repair any parts and electronic devices on the Controller Board in the field Replace the whole board with a new Service Board a MODIFICATION 1 Check that the Service Board package includes Controller Board 1 pc Instruction Sheet 1 pc 2 Modify the Service Board referring to the Instruction Sheet attached Set the Model Setting No according to III 7 b 1 Setting Model No b REPLACEMENT 1 Disconnect the power source 2 Remove the Front Panel 3 Remove screws and the Control Box Cover 4 Disconnect the Connectors and Board Support from the Controller Board 5 Remove the Controller Board from the Control Box 6 Install the new Controller Board and reassemble the Control Box in the reverse order of the removal procedure 7 Replace the Front Panel in its correct position 8 Connect the power source 93
87. refrigeration circuit The built in filter also corrects foreign matter in the refrigeration circuit to prevent troubles with valves clogged with dirt or moisture THERMOSTATIC EXPANSION VALVE The Expansion Valve throttles high pressure liquid refrigerant into low temperature low pressure state by adiabatic expansion and maintains the proper amount of refrigerant supply depending on the Evaporator load The Thermostatic Expansion Valve controls the 37 valve position to regulate the superheat difference between evaporating temperature and suction gas temperature superheat control is available from outside To check the Expansion Valve for proper operation remove the Bulb while the Compressor is running f the suction pressure rises the Expansion Valve is working normally Note Do not leave the Bulb removed for a long time while the Compressor is running The Compressor may fail due to liquid return 6 ELECTRIC CIRCUIT CAUTION Reassemble all the components as they were after servicing the unit according to a service call a BASIC OPERATION The icemaker starts water supply when the Operation Switch is turned ON completion of water supply the Gear Motor starts immediately After 5 minutes the Compressor starts to begin icemaking operation In normal operation the icemaker shuts down when the Storage Bin fills up to trip the Bin Control Switch or the Stop Button is pressed When the Compressor operates for 6
88. seconds Whole unit stops Pressure Switch turns ON setting for more than 1 resets after voltage stays second with Compressor c3 blinks ON and Control Water above reset Valve OFF setting for 2 minutes Float Switch trips at Flush Water Valve upper level in 10 TEC not opening Drain Error minutes after Flush Water inaicalon oniy Control Water Valve Valve turns ON not closing Whole unit stops Automatically except Control resets after 2 Gear Motor overloaded Water Valve minutes Abnormal Low Supply voltage Voltage stays below Automatically 69 10 PERFORMANCE DATA a FM 251AFE e Head Pressure bar m Suction Pressure bar Head Pressure bar 10 10 21 15 32 21 Ambient Temp Water Temp C 300 250 200 150 100 e Ice Production 50 Capacity kg day 10 10 21 15 32 21 Ambient Temp Water Temp C Ice Production Capacity kg day Water Consumption 10 10 21 15 32 21 Ambient Temp Water Temp C 70 Suction Pressure bar b FM 251AFE N Head Pressure bar Ice Production Capacity kg day Water Consumption 300 250 200 150 100 50 Head Pressure bar E Suction Pressure bar 10 10 21 15 32 21 Ambient Temp Water e Production Capacity kg day 10 10 21 15 32 21 Ambient Temp Water Temp C 10 10 21 15 32 21 Ambient Temp Water Temp C 71 Suction Pressure bar
89. show the compressor operating hours b 3 Press and release the Stop Button to display the error record b 5 The most recent errors will be displayed in reverse order of occurrence When appears press and release the Stop Button b 6 Press and release the Stop Button to indicate numerals and or letters six times When appears release the Option Button to return to the original mode The numerals and or letters are indicated in hexadecimal notation The numerals 0 9 are used as 0 9 Aas 10 b as 11 C as 12 d as 13 E as 14 and F as 15 In other words they need conversion to decimal notation by calculating 161 numeral or letter x 16 numeral or letter The converted number presents the frequency of occurrence Example Seven Segment Display Frequency of Occurrence in Decimal Notation 00 0x 16 0 08 16 8 8 times 10 1 16 0 16 times 36 16 6 54 times 1 10x 16 1 161 times 12x 16 0 192 times 15 x 16 15 255 times 63 The numerals and or letters will appear in the following order 1 GM locking detected by current GM hunting detected by current Low GM rotation speed High GM current Voltage above low voltage sensor reset level GM locking detected by current 3 GM hunting detected by current 4 Low GM rotation speed High GM current Voltage a
90. sor Condenser and Control Assemblies As the unit is not equipped with an Ice Storage Bin this must be purchased separately as an optional extra a FM 251AFE N Control Box Evaporator Gear Motor Flush Water Valve Control Water Valve Ice Chute Reservoir Pressure Switch Compressor Drier 13 b FM 481 AGE AWGE N Pressure Switch Control Box Evaporator Gear Motor Flush Water Valve Ice Chute Control Water Valve Reservoir Compressor Drier 14 Il MAINTENANCE AND CLEANING INSTRUCTIONS IMPORTANT 1 This icemaker must be maintained individually referring to the instruction manual and labels provided with the icemaker 2 To have the optimum performance of this icemaker the following consumable parts need periodical inspection maintenance and replacement Extruding Head Top Bearing Housing Lower Bearing Mechanical Seal These parts should be inspected at least once a year or every 10 000 hours of operation Their service life ultimately depends on water quality and environment therefore more frequent inspection and maintenance may be required 1 EXTRUDING HEAD HOUSING BEARING AUGER BEARING These parts should be replaced if a diametrical gap of more than 0 5 mm is found when at least three spots are checked by changing the direction of the Auger on each Bearing It depends on the water quality and conditions but normally the Bearings should be checked for wear after
91. system is opened Do not replace the Drier until after all other repair or replacement has been made 1 Disconnect the power source 2 Remove the Front Panel 3 Recover the refrigerant and store it in a proper container if required by an applicable law See 1 0 REFRIGERANT RECOVERY 4 Remove the Drier using brazing equipment 5 Install the new Drier with the arrow on the Drier in the direction of the refrigerant flow Use nitrogen gas at the pressure of 0 2 0 3 bar when brazing the tubings 6 Check for leaks using nitrogen gas 10 bar and soap bubbles 7 Evacuate the system and charge it with refrigerant See the Nameplate for the required refrigerant charge See 1 EVACUATION AND RECHARGE 8 Refit the Front Panel in its correct position 9 Connect the power source 84 5 EXPANSION VALVE IMPORTANT Sometimes moisture in the refrigerant circuit exceeds the Drier capacity and freezes up at the Expansion Valve Always install a new Drier every time the sealed refrigeration system is opened Do not replace the Drier until after all other repair or replacement has been made 1 Disconnect the power source 2 Remove the Front Panel 3 Recover the refrigerant and store it in a proper container if required by an applicable law See 1 6 REFRIGERANT RECOVERY 4 Remove the Expansion Valve Bulb at the Evaporator outlet 5 Remove the Expansion Valve Cover and disconnect the
92. y b Compressor 1 Bearings worn out 1 Replace cylinder valve broken 2 Mounting pad out of 2 Reinstall position Refrigerant Lines 1 Rub or touch lines 1 Replace other surfaces d Gear Motor Ice 1 Bearing or Gear 1 Replace Making wear damage Evaporator 1 Low side pressure too low See if Expansion Valve Bulb is mounted properly and replace the valve if necessary 2 Scale on inside wall of Freezing Cylinder 2 Remove Auger Usea solution of lime removing cleaner to clean periodically If water is found to surpass the following levels install a conditioner Hardness 50 ppm Unit Silica 30 ppm f Heater 1 Broken 1 Replace g CPR Condenser 1 Internal leaks 1 Replace 78 PROBLEM POSSIBLE CAUSE REMEDY 2 Overflow from Reservoir Water does not stop a Water Supply 1 Water pressure too high b Water Valve 1 Diaphragm does not close Install a Pressure Reducing Valve Clean or replace Float Switch 1 Bad contacts Check for continuity and replace 3 Gear Motor Protector operates frequently a Power Supply Voltage Too high or too low Connect the unit to a power supply of proper voltage b Evaporator Assy Bearings or Auger worn out Replace Bearing or Auger 79 V REMOVAL

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