Service manual

ManualsBrandsCornelius ManualsIce MakerI Series

TD 204(Metric)

ICE MAKER

POCKET GUIDE

“I” SERIES CUBE

ICE MAKERS

IMI CORNELIUS

One Cornelius Place

Anoka, MN 55303

1–800–238–3600

Summary of content (66 pages)

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ICE MAKER POCKET GUIDE “I” SERIES CUBE ICE MAKERS IMI CORNELIUS One Cornelius Place Anoka, MN 55303 1–800–238–3600 TD 204(Metric)
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TABLE OF CONTENTS PAGE introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Original Owner, End-user responsibility . . . . . . . . . . . . 1 Serial Plate Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Model and Serial Number Defined . . . . . . . . . . . . . . . . . . . . 2 Serial Number Defined After January 1, 1995 . . . . . . . . . . 3 Electrical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9 Remote Condenser . .
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TABLE OF CONTENTS (CONT’D) PAGE Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Sensor [Thermistor] Diagnosis . . . . . . . . . . . . . . . . . . . . . . . 38 Evaporator Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Switch Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Voltage Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Water Regulating Valve . . . . . . . .
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introduction This guide is published as an aid to the Service Technician. It is not intended to replace the service manual. In it you will find useful information not found in the service manual. This information will help you more quickly identify specific problems, however not all problems or situations may be listed. We appreciate your comments or suggestions, or if you have a specific problem not addressed in this guide or service manual.
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Serial Plate Locations Exterior: Left side, Lower Front corner. Interior: Firewall, Front.
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Serial Number Defined after January 1, 1995 AF 95 01 BC 0000 Eng change level year Month Product Code Unit Serial Number Engineering change level can be either 1 or 2 digits depending on the revision level. Month of production code will be: 01 = January 07 = July 02 = February 08 = August 03 = March 09 = September 04 = April 10 = October 05 = May 11 = November 06 = June 12 = December Note: The Month must always be 2 digits.
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Electrical Specification MODEL IAC322/3 30 IWC322/3 30 IAC522/5 30 IWC522/5 30 UNIT Volts 115 115 115 115 Phase 1 1 1 1 Hertz 60 60 60 60 No. Wires 2+ground 2+ground 2+ground 2+ground MIN. CIRCUIT Amps 20 20 20 20 MAX FUSE SIZE (HVAC CIRCUIT BREAKER REQ) Amps 20 20 20 20 REFRIGERANT R404a R404a R404a R404a Type (HP62) (HP62) (HP62) (HP 62) Weight 17 15 26 23 (oz) Weight (g) 482 425 737 652 COMPRESSOR Volts 115 115 115 115 Phase 1 1 1 1 Hertz 60 60 60 60 LRA 51 51 59 59 RLA 11.5 11.5 11.6 11.
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5 TD 204 MODEL IAC630 IWC630 IRC630 UNIT ELEC. Volts 230 230 230 Phase 1 1 1 Hertz 60 60 60 No. Wires 2+ground 2+ground 2+ground MIN.
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TD 204 COMPRESSOR (CONT’D) Hertz 60 LRA 69 RLA 8.8 60 69 8.8 60 69 8.8 60 61 12.5 6 CONDENSER FAN MOTOR (Air-Cooled System only) or AIR CIRCULATION FAN MOTOR (Water-Cooled and Remote Systems Volts 230 230 230 230 Phase 1 1 1 1 Hertz 60 60 60 60 Amps Running 1.09 0.36 0.36 1.09 Watts 75 6 6 75 WATER PUMP Volts 230 230 230 230 Phase 1 1 1 1 Hertz 60 60 60 60 Amps Running 0.5 0.5 0.5 0.5 HP 1/30 1/30 1/30 1/30 60 61 12.5 60 61 12.5 only) 230 1 60 0.36 6 230 1 60 0.36 6 230 1 60 0.5 1/30 230 1 60 0.
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7 TD 204 MODEL IAC1230 IWC1230 IRC1230 UNIT ELEC. Volts 230 230 230 Phase 1 1 1 Hertz 60 60 60 No. Wires 2+ground 2+ground 2+ground MIN.
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TD 204 COMPRESSOR (CONT’D) Hertz 60 LRA 96 RLA 13.5 60 96 13.5 60 96 13.5 60 95.6 23.9 8 CONDENSER FAN MOTOR (Air-Cooled System only) or AIR CIRCULATION FAN MOTOR (Water-Cooled and Remote Systems Volts 230 230 230 230 Phase 1 1 1 1 Hertz 60 60 60 60 Amps Running 0.89 X 2 0.36 0.36 0.4 Watts 50 W X 2 6W 6W 1/15 HP WATER PUMP Volts 230 230 230 230 Phase 1 1 1 1 Hertz 60 60 60 60 Amps Running 0.5 0.5 0.5 0.5 HP 1/30 1/30 1/30 1/30 60 95.6 23.9 60 95.6 23.9 only) 230 1 60 0.36 6W 230 1 60 0.
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MODEL IRC630 IRC830. IRC1230 IRC1448 UNIT Volts 230 230 230 230 Phase 1 1 1 1 Hertz 60 60 60 60 No. Wires 2+ground 2+ground 2+ground 2+ground MIN. CIRCUIT Amps 20 20 20 25 MAX FUSE SIZE (HVAC CIRCUIT BREAKER REQUIRED) Amps 20 REFRIGERANT R404a Type (HP62) Weight (oz) 170 20 20 25 R404a (HP62) R404a (HP62) R404a (HP 62) 170 210 250 5954 7088 230 1 60 96 13.5 230 1 60 95.6 23.9 230 1 60 230 1 60 0.36 0.36 Weight (g) 4820 4820 COMPRESSOR Volts 230 230 Phase 1 1 Hertz 60 60 LRA 69 61 RLA 8.
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Remote Condenser MODEL CR800 CR1200 CR1400 Volts 230 230 230 Phase 1 1 1 Hertz 60 60 60 Amps 1.0 1.0 1.0 Output, HP 1/6 1/6 1/6 Max.
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ICE CAPACITY INFORMATION Ice Capacity Ice capacity of any ice maker is affected by many operating conditions, such as water and air temperature and location factors. Please review the capacity tables in this manual for average 24–hour capacity under various conditions. NOTE: All printed capacity ratings are 10% except 50 HZ units these products have 12% increase in cycle time and capacity decrease of approximately 17%.
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ADJUSTMENT OF ICE BRIDGE THICKNESS TOP ROW .95 CM - 1.59 CM DIMPLE CENTER .32 CM BRIDGE BOTTOM 2 ROWS .48 CM - .64 CM BRIDGE For optimum ice production and maximum cube separation, the ice connecting the individual cubes should be a minimum of 1/8” (.32cm) thick at the center area of the ice waffle. BRIDGE 1/8I (0.32 CM) It is normal for the ice slab to be slightly thicker at the bottom and taper off in a slight wedge pattern at the top.
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Should a different thickness of the bridge be desired, it will be required to adjust the ice thickness “POT”, located on the circuit board, as follows: 1. Thinner Bridge – turn the ice thickness “pot” adjustment screw CW one full turn. Allow two cycles before determining if additional adjustments are required. 2. Thicker Bridge – turn the ice thickness “pot” adjusting screw CCW one full turn. Allow two cycles before determining if additional adjustments are required.
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TD 204 IAC322/IAC330 FREEZE CYCLE HARVEST CYCLE 14 CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 269 9:5 1034 724 1:1 1.1 147 290 12:4 1103 758 0:9 1.1 118 1841 303 14:3 1262 917 0:7 1.1 109 27 1862 310 15.1 1248 896 0.7 1.1 100 21 2062 324 19:8 1372 979 0:6 1.
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IWC322/IWC330 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 15 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 2068 276 12:1 986 710 0:9 1.3 141 27 21 2068 290 15:3 1103 800 1:1 1.3 111 32 21 2068 296 16:2 1103 814 1:2 1.3 109 32 27 2089 303 16.4 1193 827 1.1 1.3 104 38 21 2068 303 16:3 1103 807 1:3 1.
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TD 204 IAC522/IAC530 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 16 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 1517 262 12.5 1069 655 1:0 2.3 245 27 21 1724 290 14.6 1207 765 0.9 2.2 204 32 21 1896 283 17.4 1344 827 0.7 2.3 184 32 27 1999 310 17.9 1379 827 0.6 2.3 176 38 21 2206 317 20.9 1517 827 0.6 2.
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IWC522/IWC530 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 17 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 2227 303 11:3 1076 731 1:3 1.9 222 27 21 2255 310 13:7 1158 793 1:2 2.0 193 32 21 2248 310 13:8 1193 807 1:1 2.0 191 32 27 2261 324 15:2 1269 876 1:1 2.0 174 38 21 2255 310 13:9 1207 820 1:1 2.
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TD 204 IAC630 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 18 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 1551 234 8:4 1020 607 1:5 2.4 342 27 21 1800 255 11:3 1145 696 1:2 2.5 290 32 21 2041 276 12:6 1262 779 1:1 2.6 268 32 27 2048 276 13:2 1269 779 1:0 2.5 254 38 21 2296 296 17:1 1379 862 1:1 2.
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IWC630 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 19 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 2062 241 10:1 986 593 1:6 2.6 324 27 21 2062 262 12:4 1048 634 1:4 2.7 282 32 21 2068 262 12:3 1055 641 1:4 2.7 281 32 27 2096 269 14:0 1145 689 1:2 2.7 259 38 21 2068 262 12:2 1048 641 1:4 2.
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TD 204 IRC630 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 20 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 1551 234 8:4 1020 607 1:5 2.4 342 27 21 1800 255 11:3 1145 696 1:2 2.5 290 32 21 2041 276 12:6 1262 779 1:1 2.6 268 32 27 2048 276 13:2 1269 779 1:0 2.5 254 38 21 2296 296 17:1 1379 862 1:1 2.
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IAC830 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 21 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 1744 200 7:6 1124 572 1:5 2.4 381 27 21 2020 228 9:0 1289 669 1:0 2.3 338 32 21 2310 248 11:5 1448 765 0:9 2.7 308 32 27 2337 255 12:0 1441 765 0:9 2.6 293 38 21 2613 276 13:8 1600 869 0:8 2.
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TD 204 IWC830 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 22 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 2055 221 8:6 1062 558 1:5 2.5 361 27 21 2041 234 10:2 1124 593 1:3 2.6 324 32 21 2034 234 10:7 1131 600 1:3 2.7 322 32 27 2055 255 12:1 1145 607 1:2 2.6 295 38 21 2034 234 11:1 1207 641 1:3 2.
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IRC830 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 23 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 1744 200 7:6 1124 572 1:5 2.4 381 27 21 2020 228 9:0 1289 669 1:0 2.3 338 32 21 2310 248 11:5 1448 765 0:9 2.7 308 32 27 2337 255 12:0 1441 765 0:9 2.6 293 38 21 2613 276 13:8 1600 869 0:8 2.
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TD 204 IAC1030 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 24 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 1655 228 13.5 1131 517 1.7 5.3 499 27 21 21903 248 14.2 1220 572 1.4 4.8 440 32 21 2151 262 15.9 1351 627 1.1 4.8 404 32 27 2158 262 16.8 1365 627 1.1 4.7 381 38 21 2406 283 18.7 1482 689 1.0 4.
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IWC1030 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 25 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 2041 234 13.0 1069 503 1.8 4.9 474 27 21 2048 241 15.3 1110 517 1.7 4.9 420 32 21 2048 248 15.7 1110 531 1.5 5.0 417 32 27 2068 248 17.9 1207 558 1.4 5.0 373 38 21 2048 248 15.8 1131 531 1.5 5.
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TD 204 IRC1030 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 26 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 1655 228 13.5 1131 517 1.7 5.3 499 27 21 1903 248 14.2 1220 572 1.4 4.8 440 32 21 2151 262 15.9 1351 627 1.1 4.8 404 32 27 2158 262 16.8 1365 627 1.1 4.7 381 38 21 2406 283 18.7 1482 689 1.0 4.
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IAC1230 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 27 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 1593 207 8:8 1207 517 1:5 4.1 567 27 21 21834 228 11:4 1317 579 1:1 4.3 494 32 21 2041 241 13:6 1455 655 1:0 4.6 454 32 27 2034 248 14:5 1455 641 0:9 4.6 430 38 21 2282 262 16:3 1600 724 0:9 4.
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TD 204 IWC1230 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 28 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 2317 207 10:1 1289 503 1:4 4.4 554 27 21 2234 207 13:2 1220 524 1:3 4.9 483 32 21 2275 228 14:0 1241 524 1:3 5.0 467 32 27 2227 221 14:8 1241 538 1:3 4.9 441 38 21 2234 207 14:0 1241 524 1:3 4.
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IRC1230 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 29 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 1593 207 8:8 1207 517 1:5 4.1 567 27 21 1834 228 11:4 1317 579 1:1 4.3 494 32 21 2041 241 13:6 1455 655 1:0 4.6 454 32 27 2034 248 14:5 1455 641 0:9 4.6 430 38 21 2282 262 16:3 1600 724 0:9 4.
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TD 204 IAC1448 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 30 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 1696 214 10:1 1276 545 1:3 5.5 692 27 21 1931 234 11:8 1386 607 1:3 5.6 615 32 21 2172 241 13:2 1517 669 1:1 5.7 578 32 27 2186 255 13:7 1531 676 1:1 5.6 547 38 21 2427 262 15:8 1669 731 0:8 6.
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IWC1448 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 31 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 2179 221 9:9 1241 503 1:7 5.5 683 27 21 2193 241 11:9 1296 531 1:4 5.8 621 32 21 2193 248 12:2 1310 538 1:3 5.8 617 32 27 2186 255 13:0 1338 552 1:3 5.7 576 38 21 2179 248 12:7 1303 531 1:4 5.
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TD 204 IRC1448 FREEZE CYCLE HARVEST CYCLE SUCTION PRESSURE kPa CYCLE TIME Min:Sec HEAD PRESSURE kPa SUCTION PRESSURE kPa CYCLE TIME Min:Sec AVERAGE ICE WEIGHT kg/Cycle AVERAGE ICE WEIGHT kg/day 32 AMBIENT TEMP _C WATER TEMP _C HEAD PRESSURE kPa 21 10 1696 214 10:1 1276 545 1:3 5.5 696 27 21 1931 234 11:8 1386 607 1:3 5.6 619 32 21 2172 241 13:2 1517 669 1:1 5.8 583 32 27 2186 255 13:7 1531 676 1:1 5.7 551 38 21 2427 262 15:8 1669 731 0:8 6.
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“I” SERIES SEQUENCE OF OPERATION When the on off clean switch is pushed to the on position the compressor will start after a 2 second delay. The fan motor and pump are delayed. The condenser fan motor on integral air cooled unites will start when the condenser temperature rises to approximately 38° C. The water pump will start when the suction line temperature reaches approximately –4°C. Temperature information is transmitted to the control board thru thermistor sensors. The unit is now in the freeze cycle.
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LED Indicators The LEDs are board circuit indicators. If the LED in the functional board circuit is complete, check component. Example: Contactor does not energize and LED is “ON”, board circuit is OK. Check contactor, coil, leads, & connections. Yellow; S Evaporator switch(s) (proximity) Green; S D15 Water dump valve S D14 Compressor contactor S D12 Water Pump S D11 Hot Gas Valve S D6 Condenser Fan (cycles on & off with fan) Red D5; Error in system operation. Product shut down.
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LED STATUS INDICATOR CHART D6 D10 D11 D12 D13 D14 D5 D15 Green LED Condenser Fan Yellow LED Left Water Curtain Green LED Hot Gas Valve Green LED Water Pump Yellow LED Right Water Curtain Green LED Compressor Contactor Red LED Error Green LED Dump Valve Curtain Open D13 Yellow LED Off Right evaporator curtain open D10 Yellow LED Off Left evaporator curtain open Pre-Chill Mode D6 Green LED (on or off) Condenser fan cycles on & off depending upon conĆ denser temperature D14 Green LED (on) Comp
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Harvest Mode D11 Green LED (on) Three seconds after water dump valve becomes acĆ tive, the hot gas valve beĆ comes active D12 Green LED (on) 15 sec. Fifteen seconds after water dump valve becomes acĆ tive, the water pump deactiĆ vates D14 Green LED (on) Compressor contactor acĆ tive - compressor running D15 Green LED (on) 15 sec. Water dump valve becomes active at the start of harvest. Water dump valve is active for 15 seconds D13 Yellow LED (on) Right evaporator curtain closed.
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Error LED (cont’d) D5 Red LED FlashĆ CONDENSER OPEN ing, THERMISTOR CIRCUIT (Air 1/sec Cooled only) Ć Thermistor open / broken wire / poor connection. Ice Maker is SHUT DOWN. Consult serĆ vice manual (Diagnostic Section) for trouble shooting guide. D5 Red LED FlashĆ CONDENSER LOW TEMĆ ing, PERATURE CONDITION. Ć 1/sec Condenser midpoint reachĆ es 2.2°C Ć Ice Maker is SHUT DOWN.
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Dump Cycle Options You have the option of selecting dump cycle intervals of: S every cycle; (Standard setting from factory) S every 3rd cycle; S every 5th cycle; S every 7th cycle. Remember, the higher the mineral content in the water supply the more often it will be required to dump the water and/or clean the product if proper water treatment is not used. DĆ15 Water Dump Valve DĆ14 Contactor DĆ13 YL RH Evap. Switch N S RH Evap. Water Pump YL LH Evap.
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Condenser Fan Cycling Control (Intergal Condenser) The condenser fan on air-cooled cubers is cycled by the circuit board. The condenser sensor signals the circuit board when the condenser temperature reaches 100°F (38°C) the fan starts and continues to run until the temperature is reduced to 88°F (31°C). NOTE: There is no pressure control used to cycle the fan motor on Intergal Air Cooled Condenser Units.
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Water Dump Valve DĆ15 DĆ13 YL RH Evap. Switch N S DĆ14 Contactor 7 RH Evap. YL DĆ10 LH Evap. Switch N S Water Pump DĆ12 8 5 6 3 4 1 2 LH Evap. Hot Gas GR Condenser Sensor white Condenser plug DĆ11 Suction plug Fan Suction Line Sensor 230v Brown Voltage Selector Switch DĆ6 Test Plug RD GR neutral 115v DĆ5 Error Options Plug Adjustable Ice Thickness Pot.
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Sensor [Thermistor] Diagnosis Sensors Condenser or suction line – Turn Cuber power switch OFF. Disconnect sensor plug from board. Use digital multimeter set for D.C. Voltage. Turn power switch ON connect leads of meter across the two pins of the sensor being checked, meter should read 2.5 VDC 0.2 output voltage from the board. If voltage is not correct, replace the circuit board.
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10. NOTE: Should sensor (thermistor) pass the voltage test proceed to the control board diagnosis for LED sequence (see page 39). The sensor controls the condenser fan cycling from 88/100 degree Fahrenheit. Thus any defects in the condenser circuit will effect the fan cycling rate. Evaporator Switches Proximity Switches are half mounted to the water curtain, and the other half mounted to the evaporator side rail.
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Should adjustment be required, the valve has an adjustment stem on the top of the valve. After allowing the cuber to operate for 10 minutes in the ice making mode to balance the system, turning the adjusting stem CW will increase the discharge water temperature, will decrease the discharge water temperature. and CCW The water regulating valve must close off condenser water flow completely during the “hot gas” harvest cycle.
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Flow control washer flat side up Service Stem Valves When closing the service stem valves to remove your gauge and manifold set always close the high side stem valve first. Following this procedure will allow the system to “PULL” the refrigerant vapor from your manifold set to reduce refrigerant loss. When the pressure has been reduced, close the low side stem valve.
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DIAGNOSIS Starving TXV - Product Symptoms 1. Suction pressure lower than normal for the operating conditions. 2. Ice production lower than normal and/or none. 3. Ice pattern on evaporator (if any) thin at top and thick at bottom. Flooding TXV - Product Symptoms 1. Ice production lower than normal and/or none. 2. Suction pressure stabilizes at higher than normal pressure for operating conditions. Suction pressure does not modulate and may start to slowly rise. 3.
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Head Pressure Control Valve [Headmaster]/Fan Cycle Switch (Remote Units Only) receiver discharge condenser above 70°F normal receiver discharge condenser below 70°F by-pass The Cornelius “I” series remote systems use an Alco Head Pressure Control, normally referred to as a headmaster. This control is mounted in the remote condenser with a fan cycling control switch. Using both these controls gives the system positive operation under a wide range of condensing temperatures.
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maintain a receiver outlet pressure equal to or above the dome pressure setting of the valve the dome pressure will force the valve portage to change closing the condenser port and opening the bypass port from the compressor discharge line. This allow the high pressure vapor from the discharge port to “buck” the receiver pressure back up.
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defective. The overload protector, start and/or run capacitor, relay, circuit board, safety controls, etc. 1. Check voltage at compressor terminals. NO voltage will require checking the electrical circuit working back from the compressor to determine where the voltage supply is interrupted and correct as required. The load voltage, while compressor is trying to start, should not be less than 90% of rated required voltage.
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the rating on the defective original capacitor being replaced. Voltage should always try and be matched, if it cannot be it is acceptable to increase up to 10% higher than the voltage listed on the capacitor being replaced. NEVER put a capacitor on a product with a voltage rating lower than the original being replaced. If a capacitor analyzer is not available, an ohm meter may be used to check a capacitor for short or open circuits.
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S S Compressor mechanical problems Low Refrigerant Charge Moisture Contamination With the major changes in refrigerants in today’s marketplace and the use of hydroscopic oils the control of moisture and contaminates have become more critical to safeguard against than ever before in the history of mechanical refrigeration. Contaminates are also the most difficult of all problems to determine. A Meg–Ohm meter “Megger” can be a valuable tool to aid in the analysis of this problem.
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Readings in the range listed below 100 Meg–Ohm would be an indicator that the system being tested may have a contamination problem. Where does the problem come from? As an example, the filter drier may become saturated and hold large percentages of moisture and the system function without a problem until such time as the product operating conditions change. Should the room temperature increase, or the condenser plug–up etc.
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WH COMPRESSOR GR START COMPRESSOR CAPACITOR CONTACTOR BK RD BR 243-292 mfd R 115 VAC C S BK YL BK EXTERNAL COMPRESSOR M WH OVERLOAD UNIT OR BR SWITCH BK BL 1 2 2 5 POTENTIAL CONDENSATION FAN (W/C ONLY) START RELAY 1 WH 3 MANUAL RESET HIGH PRESSURE CONTROL(W/C ONLY) WH WATER DUMP BR VALVE CO 450 PSIG WH BK BL BL WATER DUMP 1 BR 3 SWITCH 2 CONDENSER FAN MOTOR (A/C ONLY) YL M RH Evap.
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WH COMPRESSOR COMPRESSOR GR RUN COMPRESSOR CONTACTOR BK BR BK RD RD R C 30 mfd 440 VAC S YL BK 72-86 mfd 330 VAC EXTERNAL YL COMPRESSOR WH M OVERLOAD UNIT OR BR SWITCH 1 2 BK BL START CAPACITOR CAPACITOR 2 5 POTENTIAL CONDENSATION FAN (W/C ONLY) START RELAY 1 WH 3 MANUAL RESET HIGH PRESSURE CONTROL(W/C ONLY) WH WATER DUMP BR CO 450 PSIG VALVE WH BK BL BL WATER DUMP 1 BR 3 2 SWITCH CONDENSER FAN MOTOR (A/C ONLY) YL M RH Evap.
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RD LIQUID LINE SOLENOID (R/C ONLY) RD RD GR COMPRESSOR BK RD CONTACTOR RD S 35 mfd YL 250 VAC YL OVERLOAD M OR BR BL 145-174 mfd 370 VAC EXTERNAL COMPRESSOR RD CRANKCASE HEATER (RC ONLY) BK See note 2 BK BK CAPACITOR RD R C BK START CAPACITOR RD BR BK COMPRESSOR RUN COMPRESSOR BK CONDENSATION FAN POTENTIAL (W/C & R/C ONLY) START RELAY RD 2 5 1 BR MANUAL RESET HIGH PRESSURE CONTROL (W/C & RC ONLY) RD WATER DUMP BR RD VALVE CO 450 PSIG BL WATER DUMP 1 BR SW
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RD LIQUID LINE SOLENOID (R/C ONLY) RD RD GR COMPRESSOR BK BK COMPRESSOR S 40 mfd YL BK 370 VAC EXTERNAL RD YL COMPRESSOR BK M RD BK 2 5 POTENTIAL FAN (W/C & R/C) START RELAY 1 MANUAL RESET HIGH PRESSURE CONTROL(W/C & R\C) BK RD WATER DUMP VALVE CO 450 PSIG BR RD 330 VAC OR BR CONDENSATION 189-227 mfd RD OVERLOAD BK CRANKCASE HEATER BL (RC ONLY) CAPACITOR RD see note 2 R C START CAPACITOR RD BR BK COMPRESSOR RUN RD CONTACTOR WH BK BL BR 3 CONDENSOR WAT
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RD LIQUID LINE SOLENOID (R/C ONLY) RD RD GR COMPRESSOR COMPRESSOR BK BK COMPRESSOR BK RD S YL BK EXTERNAL M 40 mfd 189-227 mfd 440 VAC 330 VAC YL COMPRESSOR RD OVERLOAD RD SWITCH CAPACITOR R C UNIT CAPACITOR RD BR RD START RUN RD CONTACTOR OR BR CONDENSATION FAN (W/C & R/C) BK BK 2 5 POTENTIAL BL 1 START RELAY BK BR CRANKCASE HEATER (A/C & R/C ONLY) RD WATER DUMP VALVE BL WATER DUMP 1 BR CO 450 PSIG 3 2 SWITCH M BL MANUAL RESET HIGH PRESSURE CONTROL(
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CAPACITOR 2 mfd 440 VAC RED COLORED BAND M BK GR BK CONDENSOR FAN MOTOR HEAT SHRINK TAPE HEAT SHRINK TAPE RD FAN CYCLING SWITCH BK RD RD GR HEAT SHRINK TAPE CR800, CR1200, & CR1400 REMOTE CONDENSERS 208/230 VOLTS 60 HZ 57
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TROUBLESHOOTING IMPORTANT: Only qualified personnel should service internal components or electrical wiring. Trouble CUBER NOT OPERATING CUBER NOT OPERATING INDICATOR LIGHTS “OFF”, NO POWER TO CIRCUIT BOARD TD 204 Probable Cause A. Power switch in center “OFF” position. A. Test power switch and leads. Remedy A. Place switch in “ON” position. B. High pressure cut-out open. (water cooled or remote systems) B. Press manual reset.
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Trouble CUBER NOT OPERATING INDICATOR LIGHTS “OFF”, POWER TO THE CIRCUIT BOARD COMPRESSOR DOES NOT RUN, CIRCUIT BOARD INDICATOR LIGHTS “ON” Probable Cause Remedy A. Magnet not in proximity switch field. A. Water curtain drifting out of switch range. Reduce clearance between curtain and proximity switch. B. No curtain movement. C. Faulty proximity switch. D. Unit “OFF” due to bin full. B. Adjust proximity switch. C. Replace proximity switch. A. Check contactor and leads. A. Replace if defective. B.
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Trouble Probable Cause COMPRESSOR RUNS BUT DOES NOT COOL, CIRCUIT BOARD INDICATOR LIGHTS “ON” A. Low charge. A. Leak check – Recharge. B. Hot gas solenoid leaking. B. Replace. C. Defective expansion valve. C. Replace. D. Inefficient compressor. D. Replace. E. Internal by-pass open, compressor noisy. E. Permit pressures to equalize. A. Check suction line thermistor (sensor) lead wire connection at the circuit board. A. Tighten, reattach. B. Evaporator thermistor shorted. B. Replace. C.
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Trouble Probable Cause E. Expansion valve failure (will not pull down). CUBER REMAINS IN THE HARVEST CYCLE Remedy E. Tighten bulb, replace as needed, See check-out procedure. SUCTION LINE THERMISTOR OPEN (STARTS IN HARVEST) A. Loose connection at the circuit board. A. Tighten or reconnect. B. Test thermistor. B. Replace if out of range. PROXIMITY SWITCH LIGHT “OUT” C. Loose wire connection at circuit board. C. Tighten, reattach wire. D. Proximity switch defective, see check-out procedure. D.
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Cleaning Procedures Approved ice machine cleaners by brand names: S Lime-A-Way S Calgon Nickel Safe (green color only) NOTE: All ice machine cleaners labeled safe for nickel ARE NOT the brand CALGON NICKEL SAFE. Caution: Ice machine cleaners are acidic-based chemicals. Before begnning any cleaning of the cuber, the ice in the storage bin or dispenser must be removed. Caution: When using any chemical, rubber gloves and eye protection should be worn.
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4. 5. 6. 7. 8. 9. NOTE: Return the water curtain(s) to their proper operating position. Add 88.8 Mil. for a single evaporator, or 147.9 Mil. for a dual evaporator of “Calgon Nickel-Safe” or “Lime-A-Away” ice machine cleaner directly into the water pan the float will balance with inlet water. Set switch to CLEAN, circulate for a maximum of 15 minutes. Depress and hold the dump switch to allow the cleaner to drain away. Fill the water pan with clean fresh water, circulate for approximately 3 minutes.