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Kold-Draft Ice Cuber Service Manual

1. INTERNAL Ey 21 COMP TERM BRISTOL MINS 922 88c8 TECUMSEH AKI480 A COPELAND SSE4 0100 CAS MARKED TERMINAL 88503 5 EAS 9 UNIFLOW MFG ERIE PA 88 03131 _ WIRE COLOR CODE Pump L DEFROST SNAP ACTION 15 236 V wasa HZ 4 WIRE ORANGE PINK H PRESS LD PRESS MODELS Tonore YELLOW HOTE FAN WiLL RUN WHEN WASHING SWITCH IS TURNED OFF TION FOR INCOMING LIN LEFT END PANEL CONNECT 115 250 HE OR 15 208 4 90 HL WITH Fuse SIZE 1 5760 SCHEMATIC z 5B 314 CONTROL BOX MODELS ONLY PRESS DEFROST MODELS MOOELS Fu E 5 0 VALVE 86 383 68 1453 ar ata max 1229 RATER HI FRESS Lo PRESS w MODELS PIMP 421 CHANNEL 124 4 44 vad cme NEE 1 4 5 1 2 gt TE n ss Tiy RELA
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5. Model GB4 GB2 GB1 GT1 151 MD1 Cube Size Full Water Level Distance 2 5 8 2 3 4 3 1 2 2 5 8 2 3 4 3 1 2 below top of tank Tank Insert or Extension Loop Insert Loop Insert Insert Loop Approximate Trip up Level Above Tank Bottom 1 2 1 2 1 2 Suction Pressure after Defrost 20 psig 20 psig 15 20 psig Suction Pressure before Defrost 0 2 psig 0 2 psig 0 psig Defrost Pressure 40 60 40 60 psig psig 40 60 psig Cycle Times approximate 32 28 19 23 21 min 28 26 15 18 Minutes Minutes Refrigerant Charge Remotes R see note below 3 Ibs 3 Ibs Refrigerant Type R 12 R 12 R12 Approximate lbs of ice per 15 14 8 9 1 2 7 7 1 2 7 4 4 3 4 batch Ibs lbs lbs Compressor Size 11 000 14 000 BTU BTU 1 HP TXV Controlled TXV TXV Controlled Model 155 GB7 GT8 157 Cube Size Full Water Level Distance 2 5 8 2 3 4 2 1 2 2 5 8 2 3 4 3 1 2 below top of tank Tank Insert or Extension Loop Insert Loop Insert Loop Approximate Trip up Level Above Tank Bottom 1 2 1 2 Suction Pressure after Defrost 30 psig 15 20 psig Suction Pressure before 3 7 59 3 7 5 9 Defrost psig 3 psig Defrost Pressure 40 60 psig 40 60 psig Cycle Times approximate 44 40 27 32 40 33 20 23 Minutes Minutes Refrigerant Charge Remotes R see note below 3 Ibs 3 108 Refrigerant Type R 12 R12 Approximate lbs of ice per 7 1 2 7 4 4 3 4 7 1 2 7 4 4 3 4 batch I
6. ua LA 02 19 0 gt 1904 5 2508 2389 2902 345 9 89 61 321S SI ALIYI WOWINIW OL LISNNOD 2016 Laat ONIWOINI HOS KOLD DRAFT ELECTRONIC ICE CUBER GENERIC SCHEMATIC WIRING DIAGRAM COLOR CODE BK BLACK pay eee B G BLACK GREEN S SOLENOID WIRING DIAGRAM BU BLUE 9 KOLD DRAFT ELECTRONIC ICE MAKER eY fen 60 HERTZ MOTOR R RED WHITE Y YELLOW L1 P C BOARD L2 N 1 115V w mae 208 2307 2 REL 1 BIN N O REL 4 HGH WATER 5 5 CUT LOW NO RINSE WATER VALVE 28 A w Bye 5 W 2 HOT GAS VALVE REL 2 CW 2 COLD REL 3 gt ACT o R w WARM 2 gt 0 Y R ACTUATOR SwITCH ACTUATOR 2 MOTOR B G 2 2 PUMP DEFROST SWITCH WATER PUMP NETWORKL gt B G
7. CLEARANCE SPECIFICATION EVAPORATOR 050 CUBE LET K DIME 075 FULL CUBE AND WATERS HALF CUBE QUARTER CHECK CLEARANCE ALL CORNERS Kold Draft Service amp Parts Manual 42B Installation and Adjustments Bin Probe Placement Electronic Cubers OTE PUSH THE ROUND MOUNTING HOLE F THE FLEXIBLE PROBE HOLDER OVER CLIP RY THE FORKS OF THE CLIP APART ST ENOUGH TO PREVENT THE PROBE OLDER FROM PULLING OFF AUTION OVERBENDING WILL BREAK E FORKS BIN PROBE CLIP DETAIL TOP VIEW WHEN INSTALLING ONTO A CHUTE WITH A PROBE HOLDER BIN PROBE PLEXIGLAS PROBE HOLDER CAREFULLY BREAK OFF THE PLEXIGLAS HOLDER Bin Probe Placement Electro mechanical Cubers ICE CHUTE WHEN BIN CAP NORMAL TUBE IS PUSHED IN PLACE 4 00 ICE DROP ZONE BIN THERMO CAP TUBE Kold Draft Service amp Parts Manual 43B Installation and Adjustments Air Cooled Condensers 1 Maintain adequate ventilation around the cuber It is also important to prevent re circulation of the hot condenser air from the side to the back This would occur particularly if the condenser end were placed in a corner of a room If this must be the location then an external air block should be built to prevent the hot outlet air from returning to the inlet of the condenser
8. WATER PLATE WATER TANK CONTROL STREAM DRAIN TUBE a 6 32 THD 2 HOLES DRILL 28 1405 4 HOLES I r lt 1 594 4 DRILL 36 1065 88 DP 6 32 ASME THD 63 FULL THD 4 5 4 Secure the pump mounting screw holding the water plate brace Install the inlet and outlet hoses to the pump Note When installing the pump to tank hose it is usually easier to put it on the tank first with one finger inside the hose then slip it onto the pump connection Avoid any twist or kink The hoses will slide on easier if wet Kold Draft Service amp Parts Manual 41B Service and Troubleshooting 5 Secure the water control assembly Electronic cubers Mount the water level probe assembly and relocate the control stream drain tube Locate and secure the control module box to the mounting bracket Check adjustment of the lift bolt Electro mechanical cubers Reconnect the control stream drain tube and water control tank 6 Water plate must be properly aligned with the evaporator Refer to the alignment information provided Adjust hinge plates and or shim evaporator and cam shaft bearing brackets to meet alignment specifications 258
9. Actuator Motor Style A OLD STYLE ALL 180 240 90 130 NEW STYLE 115 VOLT 180 240 LINE NEW STYLE 230 VOLT 290 370 LINE Voltage Reading Capacitor Motor Remedy A from table Good Good Tap gearcase to align bearings check shaft for binding check drift stop tiahtness Change motor if all OK B from table Open Good Chanae capacitor B from table in one actuator switch Open One Motor both motor and capacitor position 0 v in the other position gt Winding open A from table in one actuator switch Good One Motor Change motor position 0 v in the other position Windina open 0 in both positions EXCEPT DUAL Shorted Both Motor Disconnect motor from circuit and EVAP SLAVE DURING NORMAL STALL Windings open test winding resistance s see text If Be sure 15 power to the motor normal change the capacitor and if from table by leaving one probe on either erratic change the motor capacitor and p acing he other pie power is OK on the white motor lead Testing C R C Network GB 3244 electronic cubers only CAUTION To protect your meter short all terminals together before testing 1 Set ohm meter on R x 1000 1k scale 2 W to G Connect test leads Reverse test leads and the meter should deflect A good component will cause the meter to drop to about 200k ohms and then climb back to infinity 3 G to Y Connect test leads an
10. TERMINAL NOTE INTERNAL ON TECUMSEH amp BRISTOL AED WHITE YELLOW NOTE FoR 208 v GO CY WOVE BROWN LEAD FROM 230 ZOBV TRANSFORMER TERMINAL GB 365 55 455 Lo PRESS TA y NOTE gt Y NOTE COMP R FAN WILL RUN WHEN WASHING SWITCH 16 BRISTOL MINBS22 BBCB TECUMSEH 1460 COPELAND 55 4 0100 ICE MAKER WIRING DIAGRAM AVS MO VAIN 2EE 29 OL 54 BOLIDWAWD BONWHD Savan 3 IAWN AGO HOLIMS ALON OMLMOD LADISM 24 SV wes gt lt 8 29 E 2 aa 3 wv 19 379901 31990 MILVA 312 459 Y 8 ee a cet iia 1504339 ANOLAD 553 lt gt ALON 335 73553 Awy 02 350 HILIMG 335 062 OL IMM ely L23
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12. 15 30 seconds harvest 42 06 3 Cold Water Potentiometer Adjustment to open hot gas should evaporator to 45 during water fill cycle Kold Draft Service amp Parts Manual 9B Operational Components 4 Cold Water L E D red when the evaporator is colder than 45 F Off when CW control is set at 50 F or above 5 Actuator L E D orange Illuminates when the evaporator temperature is colder than 26 F Off when actuator control is set warm at 40 F or above Bin Relay lower right corner of P C Card On P C cards made since January 1984 this relay is replaceable should it ever fail Output Sockets and Relays 2 3 amp 4 upper right corner of P C Card The connections for output supply from the P C card to the small motors and valves when sequenced by the relays Transformer upper center of P C Card The same P C card is used on all Electronic cubers The transformer has 2 leads brown and white attached to a plug which mates to a plug from the front wire channel On 115 volt ice makers the plugs mate white to white brown open on transformer plug On 208 230 and 115 230 3 wire volt ice makers the plug mate brown to brown white open on transformer plug Kold Draft Service amp Parts Manual 10B With the Electronic cuber mounted to bin
13. THERMO THERMOSTAT ACTUATOR u 111 g WATER Ly ACTUATOR GB 385 MOTOR WEIGHT CONTROL PICTORIAL SWITCH WARNING ETC 15 20 MIN AMPACITY 11 19 75 B FROM 15 20 AMP FUSE SIZE 11 9 76 WIRE COLOR CODE JUNCTION BOX FOR NCOMING LINE UNDER CABINET SCHEMATIC GY 33 COMPRESSOR wear Bersang STTAZ amp GTTW2 ADD WARNING Q O29 99 OD 37659 3 xoa 1504 53 4 1551 4 Avid BOW AE 21IN W3HISE a E wus 9 3609 1508430 9 368 29 gt 7 319904 9 06 24 228 99 i 2 AQ 02 47 2 1012 14 2 5 819994 awnd Nmons SY k DILYN Q VANNYAD M oro 24 560 895 x
14. 819 199 802 95 Simi 19 6 96 19 3271 GA 327 INN KOU 81 12 gt Ssaud STOW IHL INYO 9 sow a 14 HOLIMS Dut 799 ones 21115 1593329 9 3902 BIN THERMO WIRE COLOR CODE PUMP amp DEFROST L SWAP ACTION B BLACK 15 OVERHEAT BLUE THERMO geen BROWN BLACK GREEN GRAY MODELS PRESS ONLY L WHITE YELLOW NOTE GTT MODELS ONLY MADE BEFORE SEPT THE DEFROST VALVE ISA 6 374 LARGER VALVE BODY ON THE SAME MODELS AFTER SEPT 1 381 THE DEFROST VAWE 15 GT 1225 SMALLER WELDED VALVE BODY CHANWEL HEATER 5 ACTUATOR MOTOR JUNCTION BOX FOR INCOMING UNE BEHIND LEFT PANEL CONNECT LISTED SOLOW AY 1 wr SCHEMATIC corp oft MM AMPACTIY ZZ T iho Min Wink io te J NOTE GBT THIS GB 208 687 678 157 CONNECTION 15 T 204 96 1 396 2 START 8 35
15. BG TOGGLE CONTROL CONTROL BL LOW COLD CONTROL F BL BL COOL WARM TOGGLE UP ACTUATOR 2 CONTROL RESET P COLD R COND UNIT FAN STOP STOP WAT UF uP PU LINE Y G VALVE ACTUATOR W MOTOR W Start of New Cycle EC10 Water plate closed End Defrost Front cam in upright position pushes actuator toggle switch to the right disconnecting the third and final circuit to red stopping the actuator motor with the water plate up and closing the defrost valve cycle completed same circuit as EC1 Water fill Current to condensing unit water pump and water valve cycle starts EC11 Circuit not shown Bin full Ice against bin thermostat tube opens bin thermostat shutting off all parts of the ice maker When ice is removed bin thermostat closes ice maker will start up and operate regardless of what part of the cycle it was in when it was shut off EEC10 Water plate closed End Defrost Front cam in upright position pushes actuator toggle switch to the left disconnecting the third and final circuit to red stopping the actuator motor with the water plate up and closing the defrost valve cycle completed same circuit as EC1 Water fill C
16. KOLD DRAFT ELECTROMECHANICAL AND ELECTRONIC ICE CUBER SERVICE MANUAL 1525 East Lake Road Erie PA 16511 1088 Tradition of Equipment 2004 Inc Erie U S A 3 04 LIT 09503 Table Contents Table of Contents Key to Electronic Model Numbers Key to Electro Mechanical Model Numbers Installation Specifications Electronic Operational Components Electronic Sequence of Operation Electronic Electrical Circuits Functional Tests Trouble Cause and Remedy Service and Troubleshooting Installation and Adjustments Preventative Maintenance Operational Components Electro Mechanical Installation Specifications Electro Mechanical Page No 1B 2B 3B 4B 6B 11B 13B 25B 26B 33B 43B 47B 49B 53B Kold Draft Service amp Parts Manual 1 Key to Model Numbers Electronic Cubers GB 4 01 W HK Cube Size Full Cube 1 1 4 x 1 1 4 x 1 4 4 HK Half Cube 5 8 x 1 1 4 x 1 1 4 K Cubelet 5 8 x 5 8 x 1 1 47 Condenser Type A Air Cooled Condenser Self Contained W Liquid Cooled Condenser Self Contained R Remote Air Cooled Condenser Electrical Characteristics Refrigerant 01 115 Volt 60 Hz 1 Ph R 12 02 115 208 230 Volt 60 Hz 1 Ph 3 Wire R 12 03 208 230 Volt 60 Hz 1 Ph R 12 04 208 230 Volt 60 Hz 1 Ph R 502 05 208 230 Volt 60 Hz 3 Ph 3 Wire R 502 06
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18. 3 CONTROL DOWN 1 Stow CONTROL To RESET COLD COND UNIT FAN LINE ACTUATOR MOTOR Water Fill EC2 Water fill ice maker with cold water thermostat circulating water below 40 Current to condensing unit water pump water valve and through blue circuit through cold water thermostat pink circuit to defrost valve When the incoming water is cold and the compressor can cool the water below 40 F during the Fill Cycle the cold water thermostat will switch to the cool side connecting the pink and blue circuits giving power to the defrost valve allowing hot gas from the compressor to go through the evaporator warming up the circulating water GS models have no cold water thermostat EC2a Water fill ice maker with cold water thermostat circulating water warms up to 50 F If the water warms up to 50 before the water fill is complete and the weight control switch drops the cold water thermostat will switch to the warm side shutting the defrost valve and the compressor will start to cool the water again EEC2 Water fill control circulating water below 40 to 45 F Current to condensing unit water pump water valve and through blue circuit through cold water thermostat pink circuit to defrost valve When the inco
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20. Kold Draft Electronic Cuber Construction Skins The skins consist of the top left end back right end panels and front inspection panel Condensing Units Varies with each model For compressor size and charge refer to the Water Levels Pressures Cycles and Charges Chart on the previous page Evaporator The GB series Full Cube C evaporator is made up of 108 cells 1 1 4 each way The Cubelet K evaporator is made up of 216 cells 1 1 4 x 1 5 8 x 5 8 deep The Half Cube HK evaporator is made up of 216 cells 5 8 x 1 1 4 x 1 1 4 deep The material is copper and the entire assembly is tinned preventing corrosion and making its use acceptable to sanitary board seal is not required between the evaporator and water plate normally there is an approximately 1 32 clearance between them Refer to Water Plate Evaporator Alignment for adjustments Note GT300 evaporators contain 1 2 the number of cells of a GB evaporator Refrigerant Control 1 Thermostatic expansion valves are used on all GB and IS models and GT400 GT500 and GT600 models For replacement of the valve consult the Parts Price List for type of expansion valve It has been regulated properly on test before being shipped to give minimum superheat and maximum flooding of the evaporator and should not require adjustment Sometimes after shipping or storage the expansion valve sticks and allows more refrigerant to pass than necessary increasing the low sid
21. MASTER SLAVE EVAPORATOR EVAPORATOR CHECK COMPRESSOR HOT GAS VALVE DEFROST LINE DEFROST LINE EXPANSION EXPANSION VALVE VALVE As can be seen by the simplified refrigeration diagram above the hot gas defrost tubing from each evaporator is joined at the hot gas valve and provides refrigeration circuit during the freeze cycle between the evaporators As the evaporator inlet pressures are never exactly equal refrigerant can flow from one evaporator inlet to the other through the hot gas tubing causing frost on the tubing To the service man not familiar with the GB4 this can be a startling phenomenon hot gas lines are not supposed to be cold but is perfectly normal and has little or no effect on the operation of the cuber To minimize frost on the hot gas tubing which turns to water during the defrost cycle ball check valve was added 8 82 to the hot gas line feeding the upper evaporator During harvest the check valve opens and allows unrestricted hot gas to both evaporators During the freeze cycle the upper evaporator expansion valve which is set at a slightly lower superheat than the lower expansion valve will cause the check valve to close and block refrigerant flow through the hot gas tubing Theoretically both expansion valves can be set at the same superheat as the gravity operated ball check valve requires approximately 1 4 p s i to unseat Hot gas line f
22. Use an AC voltmeter set for proper range Voltages in the tables are measured across the motor reversing capacitor between the colored motor lead wires gt If there is in evaporator s and the water plate s is are not fully closed with the pump s running AND the actuator switch es tripped UP the actuator motor s should be running If not be sure that there is power to the motor s and that it they is are not off due to high temperature NEW STYLE Always refer to the proper wiring diagram when troubleshooting gt In dual evaporator models if only one motor appears to be running as it should be sure that you understand the synchronization circuit see text gt For OLD STYLE motors in 208 230 60 or 220 240 50 CLASSIC cubers the voltage between the white motor lead connected to the voltage reduction capacitor and the colored lead gray or yellow being powered by the actuator switch must be 90 to 130 volts This varies with line voltage and if not within these limits the motor s may not provide adequate performance Be sure that the proper capacitor is installed see text gt Motor winding resistance s at 75 F out of the circuit are as follows All OLD STYLE motors white to gray or yellow approximately 450 ohms NEW STYLE 115 volt motors white to black or yellow approximately 95 ohms NEW STYLE 230 volt motors white to red or yellow approximately 400 ohms Voltages for test table below
23. Orange and Red L E D s ON bright Short Short Open Open Open Cuber stops Orange Red L E D s OFF may glow dimly Short Open Open Short Open Harvest begins allow plate to open fully both L E D s ON bright Open Short Open Open Open relay 1 plunger water plate closes both L E D s OFF dim If Relay 1 plunger is not accessible CAREFULLY jumper the CONTACTS to B G Used only with optional Status Indicator See text for details if necessary To Test Probes The nominal resistance of all probes at 32 is 5650 ohms The only practical accurate method is to test resistance of the probe in ice water as near to 32 F as possible The ranges of acceptable resistances are Probe Acceptable Range Bin GBR 03177 Evaporator GBR 03176 Water Level GBR 03170 5400 5900 OHMS 5530 5770 OHMS 4650 6650 OHMS B To ROUGHLY test probes using the P C card connect each probe in turn to the pins with all other pins left open Turn the cold water potentiometer to mid range 12 O clock A warm probe will turn BOTH L E D s OFF Submerging the probe ice water will turn the RED L E D Reaction time is 5 20 seconds Be sure to return the cold water potentiometer to its original position after the probe tests Kold Draft Service amp Parts Manual 25B Trouble Cause 8 Remedy Note Common to Electronic and thermostatically
24. amp Parts Manual 49B Operational Components When the circulating water drops to 40 degrees F the cold water thermostat opens the hot gas valve warming the evaporator and the water therby preventing the actuator thermostat from switching cold before the water fill is completed The hot gas valve will close when the evaporator warms up or the control tank drops Bin Thermostat This thermostatic switch has its control bulb tube near the ice drop zone The function of this switch is to turn off the entire cuber when the storage bin is full of ice Hold ice against the bin stat cap tube and adjust it so the cuber shuts off in one to two minutes Do not try to adjust the bin thermostat during the water fill portion of the cycle If the unit shuts off while filling it may not have sufficient water to form full cubes on the next cycle However subsequent cycles will be normal Kold Draft Service amp Parts Manual 50B Operational Components Weight Control Switch Setting and Adjustment Water level After the water fill when the control tank has dropped turning off the inlet water valve the water level between the circulation tank and the control tank will equalize Measure from the top edge of the main circulation tank down to the water level in the controltank Sight the water level carefully to see that it is as listed for your model in the Chart of water levels etc The external screw at the bottom of the weight
25. electronic versions of the GB4 The upper ice making section also known as the master contains the controls necessary to operate both sections simultaneously while the lower or slave section contains only those switches required to operate the actuator motor and water pump and to provide synchronization between the two water plates The GB4 uses an electrical synchronization system to ensure that both water plates are fully closed before the freeze cycle begins and to prevent repeated false harvesting caused by out of time actuator motors There are two key parts in the synchronization system A modified rotor in the top actuator motor to slow the motor by 5 seconds and a resistor between the upper and lower actuator toggle switches to stall the lower motor in the closed position at the end of harvest Synchronization is achieved by the lower actuator motor running slightly faster than the upper motor stalling upon direction reversal in the full upright 12 O clock position thus allowing the upper motor to catch up and synchronize Upon upper motor direction reversal both motors continue to the end of the travel limit in the other direction and repeat the same synchronization procedure With ice in the evaporators both plates go down and stop together in the full down position automatically synchronized When dry cycling the cuber without ice the lower actuator motor trips the lower actuator toggle switch and raises ahead of the
26. gt R R 208 230 V MODELS ONLY B G 4A TRANS 68 894 250 COM 208 WASH WASH SWITSH HIGH PRESS LOW PRESS COND ON 4 UNIT AS APPLICABLE o 1 03 508 1065 01 230 1081 JUNCTION BOK FOR INCOMING BCHINO LEFF ENO PANEL CONNECT WITH 14 WIRE TO GO v LO MZ SEE NOTE DISCONNECT SWITCH MINIMOM AMPACITY 15 MAXIMUM FUSE SIZE H TERMINAL USED ONLY FOR HARVEST SWITCH WITH STATUS INDICATOR 0 0 8 84 u 4 57 COOLED WATER LEVEL PROSE 68 3174 EVAP PROBE 68 3377 H CHANNEL SCHEMATIC Cie STAT SOCKET 374 DEFROST VALVE 93 3153 56 31356 MODULE Box 5 CONTROL 28 3144 CIR ASSES uM WIRE COLOR CODE BLACK 1 DEFROST SNAP ACTION SWITCH YELLOW TOSGLE PARTS ARE SHOWN THE INDICATED REVISION DATE PARTS MANUAL FoR CHANGES FOR 208 MOVE BROWN NOTE LEAO FROM 230 V TO 208 FAN WILL RUN WHEN TRANSFORMER TERMINAL WASHING SWITCH 15 TURNED TO OFF TRANS BOX 8 Eeg oe i453 oF 1864 AIR COBLED START ONLY
27. is on Check voltage at defrost valve coil If not 115 V test PC card Red L E D is off Check evaporator probe and PC card Cold water thermostat making contact Tap cold water thermostat or short across pink red leads If defrost valve opens change thermostat Water pump does not operate Fuse blown in transformer box or in control module box Replace fuse Pump bearings defective Replace pump motor Pump windings burned out or off on thermal overload Allow to cool or replace motor Check for 115 V plus or minus 10 Circuit incomplete between water pump and pump defrost switch Check circuit and switch Kold Draft Service amp Parts Manual 28B Trouble Cause 8 Remedy TROUBLE CAUSE SYMPTOM REMEDY Water pump motor running but not pumping water Impeller loose Replace impeller Clogged strainer in tank outlet Clean or replace strainer Impeller broken Replace impeller Most cubes not fully formed Water pump pressure too low Check bearings Check voltage Replace pump Clogged strainer in tank outlet Clean or replace strainer Leak water circulation Fix leak or replace water plate system Waterplate not aligned with Correct alignment evaporator A few cloudy cubes others OK Some holes waterplate Open holes with 1 16 drill clogged
28. 2 3 4 3 1 2 55 60 psig 10 15 psig 70 psig max 100 110 with CPR psig 19 min 17 min 11 min 3 105 R 502 15 lbs 141 8165 GB1205 22 500 BTU TXV controlled GB1204 27 600 BTU TXV controlled GB500 GT500 IS500 2 5 8 2 3 4 3 1 2 15 20 psig 0 40 60 psig 26 min 20 min 13 min 3 165 R 12 7 1 2 7 105 4 lbs Ibs 9 800 BTU TXV controlled GB903 GB1000 C HK K 2 5 8 2 3 4 3 1 2 20 psig 0 2 psig 55 psig 40 60 with CPR psig 27 min 22 min 15 min 3 105 R 12 15 lbs 141 8 lbs 14 000 BTU TXV controlled GB400 GT400 IS400 2 5 8 2 3 4 3 1 2 20 25 psig 3 psig 40 60 psig 28 min 25 min 14 min 3 165 12 7 1 2 7 lbs 4165 Ibs 6 800 BTU TXV controlled GB600 GT600 C HK K 2 5 8 2 3 4 3 1 2 20 psig 0 2 psig 40 60 psig 17 min 12 min 3 165 21 R 12 7 1 2 7 105 41 lbs 11 000 BTU TXV controlled GT300 C HK K 2 3 11 13 0 40 psig 28 min 21 15 min 13 oz GT301A 10 oz GT301W R 12 3 3 4 3 1 2 lbs 2 105 Ibs 6 800 BTU cap tube controlled NOTE Remote condenser application cubers require a total minimum charge of 10 1 2 lbs GB1200 series cubers use R 502 all others use R 12 For maximum fuse size check electrical rating plate on left rear of cuber Kold Draft Service amp Parts Manual 5B Operational Components
29. 200 Volt 60 Hz 1 Ph R 07 230 Volt 50 Hz 1 Ph 08 380 230 Volt 50 Hz 3 Ph 5 Wire R 502 212 12 Electronic Series 3 300 Series 3 4 HP 4 400 Series 3 4 HP 5 500 Series 1 HP 6 600 Series 1 1 2 HP 10 1000 Series 2 HP Nominal 12 1200 Series 2 HP Nominal Cabinet Width GB Horizontal Unit 42 Wide GT Slimline Unit 28 1 2 Wide Kold Draft Service amp Parts Manual 2 B Key to Model Numbers Electro Mechanical Cubers 1 4 E Electronic Cube Size Full Cube 1 1 4 x 1 1 4 x 1 4 4 HK Half Cube 5 8 x 1 1 4 x 1 1 4 KK Half Cube 5 8 x 1 1 4 x 1 1 4 K Cubelet 5 8 x 5 8 x 1 1 47 Ice Production Per 24 Hours Nominal 64 75 Ibs w 40 Storage Bin Included 1 110 165 w 65 Storage Bin Included 2 200 108 6 600 Ibs 3 300 Ibs 7 700 108 4 400 lbs 8 800 Ibs 5 500 Ibs 9 900 Ibs Code Letter NSF National Sanitation Foundation Listed D 115 230 Volt 60 Hz 3 wire NSF Listed 5 500 Series 1 HP Condenser Type A Air Cooled Condenser Self Contained W Liquid Cooled Condenser Self Contained R Remote Air Cooled Condenser Precharged X Remote Air Cooled Condenser Compressor Horsepower Rating 0 Condensing Unit 1 3 HP 6 1 5 HP 1 1 4 14 000 7 lt 3 4 2 11 000 BTU 5 1 2 8 3 4 Machine GB
30. B G BLACK GREEN S SOLENOID WIRING DIAGRAM BU BLUE 9 KOLD DRAFT ELECTRONIC ICE MAKER eY fen 60 HERTZ MOTOR R RED WHITE Y YELLOW L1 P C BOARD L2 N 1 115V w mae 208 2307 2 REL 1 BIN N O REL 4 HGH WATER 5 5 CUT LOW NO RINSE WATER VALVE 28 A w Bye 5 W 2 HOT GAS VALVE REL 2 CW 2 COLD REL 3 gt ACT o R w WARM 2 gt 0 Y R ACTUATOR SwITCH ACTUATOR 2 MOTOR B G 2 2 PUMP DEFROST SWITCH WATER PUMP NETWORKL gt B G gt R R 208 230 V MODELS ONLY B G 4A TRANS 68 894 250 COM 208 WASH WASH SWITSH HIGH PRESS LOW PRESS COND ON 4 UNIT AS APPLICABLE o 1 03 508 1065 01 KOLD DRAFT ELECTRO MECHANICAL ICE CUBER GENERIC SCHEMATIC WIRING DIAGRAM COLOR CODE BK BLACK B G BLACK GREEN S SOLENOID WIRING DIAGRAM BU BLUE x KOLD DRAFT ELECTROMECHANICAL ICE CUBE MAKER GRAY 60 HERTZ ORANGE R RED Y YELLOW L1 L2 N CHANNEL HEATER BK 223 gt BIN WASH 5 T STAT HIGH PRESS LO
31. VALVE VALVE ACTUATOR Start of Cycle EC3 Tanks weight switch drops freeze cycle evaporator above 20 F Sufficient water is in the circulation tank and control tank so that the weight of the water in the control tank pulls the weight control switch down shutting the water valve If the cold water thermostat is still on the cool side and the circulating water is still being warmed as the weight control switch drops this switch cuts off power to the blue circuit and through the cold water thermostat to the defrost valve shutting the defrost valve Water level should settle in the control tank at a preset distance below the top of the main circulation tank Refer to the Water Levels Pressures Cycles and Charges chart Current to condensing unit and water pump Water freezing in cells Springs hold water plate edges against bottom of cams Cams and hinge leaves hold water plate approximately 1 32 from evaporator to adequate fin between the cubes Tank and water level probe assembly full freeze cycle evaporator above 26 Sufficient water is in the circulation tank and water level probe assembly so that water touches the top thermistor probe and the water valve shuts Kold Draft Service amp Parts Manual 15B Electrical Circuits PUMP amp DEFROST SNAP ACTION Om TOGGLE SWITCH TOGGLE r CONTROL
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33. as long as ice remains in the evaporator approximately 2 to 4 minutes depending on ambient and hot gas temperature Ice releases on the left side first and rests on the water plate then the ice falls out substantially all at one time as the fin between cubes tends to hold them together until they drop into the bin After ice falls out the side of the evaporator warms up rapidly to 45 F approximately 30 seconds The actuator toggle pushed left also completes yellow orange circuit but with no power in the orange circuit the actuator motor gets no power during the defrost period EEC7 Defrost Water plate is wide open and actuator toggle lever on the actuator motor rear shaft pushes the actuator toggle switch to the right stopping the motor with the water plate in the down position and completing the third connection to the red defrost circuit Current to the condensing unit water valve and defrost solenoid Excess water concentrated with minerals drains from the water tank Freshes water washes water plate and tank Hot refrigerant gas continues flowing through the evaporator releasing the ice slowly Edge of the evaporator and evaporator probe remain cool 32 to 35 F as long as ice remains in the evaporator approximately 2 to 4 minutes depending on ambient and hot gas temperature Ice releases on the left side first and rests on the water plate then the ice falls out substantially all at one time as the fin between cubes tends to hol
34. circuit current through the capacitor which changes phase and boosts the voltage to 200 volts on the yellow actuator motor circuit giving counter clockwise rotation Current from the blue circuit flows through the cold water control to the pink circuit and defrost valve Cams start rotating counter clockwise pressing on the cam brackets on the water plate to release it from the approximately 15 seconds The open defrost valve allows hot refrigerant gas from the compressor to go through the evaporator coil to start releasing the cubes Kold Draft Service amp Parts Manual 17B 5 177727 o m PUMP 4 DEFROST SNAP ACTION TOGGLE SWITCH CONTROL CONTROL 109 WATER LEVEL BG COLD WATER BL BG CONTROL BL COOL WARM ACTUATOR CONTROL COND UNIT FAN LINE DEFROST VALVE ACTUATOR MOTOR W TOGGLE UP R TOGGLE DOWN Defrost EC6 Water plate lowering The pump and defrost switch lever drops stopping the pump and completing the second connection to the red defrost circuit The actuator motor and cams continue to rotate counter clockwise lowering the water plate The open water valve allows water to begin rinsing off the water pl
35. control stream flows over the dam for more than one minute it is an indication that the water level can be lowered to shorten the cycle time Turn the weight switch screw 1 8 turn clockwise See the following illustrations for clarification and component identification AND CUBERS HAVE A LOOSE INSERT IN THE CONTROL TANK AND CUBERS DO NOT HAVE AN INSERT WATER LEVEL AFTER TANK IS DOWN SEE CHART OF WATER LEVELS ETC TRIP UP LEVEL IN THIS RANGE INSERT Kold Draft Service amp Parts Manual 51B Operational Components Water Level Control Components END VIEW FRONT VIEW WEIGHT CONTROL SWITCH EXTENSION LOOP ONLY USED WITH CUBELET AND HALF CUBE RANGE ADJUSTMENT SCREW ADJUST FIRST CLOCKWISE HANGER WIRE DECREASES FILL LEVEL TANK COVER DIFFERENTIAL SCREW COUNTER CLOCKWISE FOR EARLIER TRIP UP REMOVE POINTER IF CONTROL TANK REQUIRED FOR PROPER ADJUSTMENT INSERT ONLY USED WITH FULL HALF CUBE O STOP SCREW DO NOT ADJUST Kold Draft Service amp Parts Manual 52B Installation Specifications Water Levels Pressures Cycles and Charges higher than average temperatures increase pressures and cycle times
36. end of the freeze cycle to make the stream go over the dam recheck it at the early part of the next freeze cycle Make sure no water is flowing over the dam until all the cubes are ready for harvest ADJUSTMENT SCRE Cube Quality 1 If cubes are full with only small dimples 1 8 3 16 deep the amount of water taken in at the start of the cycle is correct 2 If the water level drops below the low probe and initiates the harvest cycle before the control stream goes over the dam then there was insufficient water taken in at the beginning of the cycle or there is a leak in the system Cubes with large holes are an indication of this problem Adjust the high water level probe up to increase the water intake on the next cycle or eliminate the leak Note The leak may be internal such as a cracked lateral under the water plate Kold Draft Service amp Parts Manual 45B Installation and Adjustments 3 If the control stream goes over the dam for more than one minute before the water clears the low probe and cubes are found to have large holes then the control stream is set too high Set the control stream slightly lower at the start of the next freeze cycle If ice is frozen to the water plate adjust the lower water level probe up slightly so the
37. harvest is initiated within 15 30 seconds of the control stream rising over the dam 4 Holes in the cubes on only one side of the evaporator indicate a refrigerant flow problem Expansion valve models Holes in the left side cubes indicate the expansion valve is open too much Adjust the valve closed at 1 8 turn increments Holes in the right side cubes indicate the expansion valve is closed too much Adjust the valve open at 1 8 turn increments Capillary tube models Holes in the left side cubes indicate overcharge Holes in the right side cubes indicate undercharge Water Level Probe Assembly GBR 03170 This assembly is connected to the main water circulation tank by means of flexible tubing The level of water in the probe assembly indicates the level of the water in the circulation tank Thermister probes determine water valve on off levels Refer to the chart of water levels for the correct position for the upper probe The bottom probe is positioned so that 15 30 seconds after the water flows over the dam harvest is initiated Initially the tip of the probe should be set at approximately 1 2 to 3 4 from the bottom of the tube Kold Draft Service amp Parts Manual 46B Preventative Maintenance Cleaning Usually at 3 to 6 months intervals depending on water conditions Inspections During cleaning at least twice a year Service All such equipment will require service at some time Service requ
38. harvest of the ice cubes cams at the seven o clock position At the end of the harvest cycle the cams rotate clockwise returning the waterplate to the closed position cams at the twelve o clock position A drift stop spring is used to prevent the actuator motor from drifting back after the water plate is closed and power is cut off The spring has a plastic contact point that rests against the motor shaft New style replacement actuator motors have an internal brake Actuator Thermostat This thermostatic switch has its control bulb tube in a well on the front side of the evaporator This switch must be in the cold position in order for the actuator motor to lower the water plate at the beginning of the harvest cycle At the end of the harvest cycle the switch will change to the warm position This will cause the water plate to close and start the next cycle The switch should be adjusted so that the water plate starts to close approximately 10 to 30 seconds after the ice drops out of the evaporator Cold Water Thermostat This thermostatic switch also has its control bulb tube in a well on the front side of the evaporator The function of this switch is to prevent a false harvest cycle during the water fill due to low water flow low water presure clogged supply line etc or cold inlet water These conditions could cause the actuator thermostat to change to the cold position before the weight control tank drops Kold Draft Service
39. on Full Bin Condition 2 Once the water fill is complete hold ice to the tip of the probe The ice maker should shut off in 15 30 seconds if longer adjust the bin potentiometer on the P C card slowly counter clockwise until the unit shuts off 3 After the ice maker stops remove the cubes from the probe tip the ice maker should start within one minute if the ambient air is above 50 F The bin probe is a standard length but when stacking units check the chart below to determine whether a stacked cuber will require a bin probe extension GBR 03240 in addition to the bin probe GBR 03177 to reach into the bin GBR 03177 Probe GBR 03177 Probe amp GBR 03240 Extension amp GBR 03240 Extension GBR 03177 Probe GBR 03177 Probe amp GBR 03240 Extension amp GBR 03240 Extension GBR 03177 Probe GBR 03177 Probe amp GBR 03240 Extension amp GBR 03240 Extension GBR 03177 Probe GBR 03177 Probe GBR 03177 Probe T 100 Crusher Any Kold Draft Bin Any Kold Draft Bin Kold Draft Service amp Parts Manual 8B Operational Components Printed Circuit Card GBR 03135 02 type P C cards have been used since August 1980 Refer to Engineering Bulletin 10 80 for pre August 1980 details but note that all of the older P C cards should have been updated with retrofit kits offered by the factory after August 1980 GBR 03135 02 E P C cards replaced the GBR 03135 02 from
40. recommended every three months or whenever the cuber is serviced where water conditions cause ice to stick to the water plate Kold Draft Service amp Parts Manual 38B Service and Troubleshooting To Apply Silicone Treatment Defrost the unit by lifting up on the control tank or pulling down on the water plate Place unit in the wash mode allow the tank to refill to melt off any accumulated ice Open the water plate to dump out the tank Turn off the power with the water plate down Wipe the water off the evaporator and water plate surface Apply Kold Draft water plate spray to the surface of the water plate except for the last half inch on the right side This will keep water from running over the edge and into the ice bin during defrost Return unit to normal operation Note Use Kold Draft silicone water plate spray Others may contain substances detrimental to the water plate surface Removal of Water Plate and Tank 1 Turn off the water and allow the water plate to close Turn off the power 2 Remove the control stream drain hose 3 Electronic cubers Remove the water level probe assembly by sliding it to the right beyond the control stream box and lifting it off Disconnect the tube from the water tank Electro mechanical cubers Remove the water control tank from the wire hanger Disconnect the tube from the water tank 4 Remove the pump mounting screw holding the water plate brace Remove the inlet and o
41. tank outlet to prevent dirt or particles of precipitated mineral from clogging the jet holes or the control stream It also protects the pump impeller If the screen becomes clogged with precipitated minerals it is advisable to clean the whole circulation system with ice machine cleaner Water Pump The water pump is a centrifugal type direct with sealed bearings that require no lubrication The inlet tube is at the bottom of the water circulation tank and the outlet at the top of the pump is connected to the header of the water plate Water Level Probe Assembly GBR 03170 This probe is connected to the main water circulation tank by means of flexible tubing The height of water in the probe assembly indicates the height of water in the circulation tank Thermistor probes determine water valve on off levels Refer to the Water Levels Pressures Cycles and Charges chart for the correct setting per model for the upper probe The bottom probe is positioned so that 15 30 seconds after the water flows over the dam on the control stream box on the water plate the water level is below the glass tip and harvest is initiated Pump and Defrost Switch A spring loaded switch is mounted in the control box It controls the defrost circuit and water pump and is operated by an adjustable screw in the lift plate attached to the water plate As the water plate closes after defrost the adjustable screw lifts up and makes contact with the pump switch to cut on
42. valve at this time regardless of the water plate position Refer to model wiring diagrams for circuit details Kold Draft Service amp Parts Manual 20B Electrical Circuits PUMP amp DEFROST SNAP ACTION _ e ss BG TOGGLE SWITCH TOGGLE CONTROL DOWN COLD WATER R CONTROL COOL WARM BL UATOR 2 NTROL 12 RESET R P COND UNIT LINE DEFROST VALVE ACTUATOR MOTOR W End of Defrost Water Plate Finishes Closin 9 Water plate almost closed Lift plate pushes up the pump and defrost toggle switch starting pump and disconnecting the second circuit to red but current from black green to red continues through actuator toggle switch Current to all operating parts of the cuber Water starting to fill the tank Hot gas from the defrost valve keeps the evaporator warm to melt any small piece of ice that may be left on the water plate as it closes Cams continue rotating to upright position approximately 5 seconds EEC9 Same as EC9 Kold Draft Service amp Parts Manual 21B Electrical Circuits PUMP amp DEFROST SNAP ACTION TOGGLE SWITCH aan
43. water turned on the electricity connected and the wash switch in the ON position we can follow through one complete cycle bin actuator and cold water controls set to the warm side L E D s OFF dimly lit The water plate is in the position The pump and defrost switch is held up by the lift bolt on the water plate energizing the pump The water inlet valve is open and the evaporator is cooling The water level in the main water tank is rising and the corresponding water level is indicated in the water level probe assembly Water is being pumped from the bottom of the circulation tank into the header at the left end of the water plate through the lateral tubes under each row of cells through the squirt holes in the center of each cell The water stream hits the top of each cell then cascades down the 4 sides of each cell and returns to the main water tank through drain holes on each side of the squirt hole When enough water to make one batch is in the main water tank and the water level probe assembly water will touch the upper thermistor probe and the water inlet valve shuts off The control stream at the front left corner of the water plate should be flowing at the base of the dam The screw at the inlet of the control stream may be adjusted to obtain a proper setting When the evaporator temperature reaches 45 F the evaporator thermistor probe signals the card to set the cold water control cold red L E
44. 2 Cleaning an air cooled condenser The air cooled condenser should be cleaned weekly with a stiff brush and a vacuum cleaner to remove dust and dirt for efficient operation of the ice maker To determine that tge condenser is clean a light which is held to one side of the condenser will be clearly visible from the other side Water Cooled Condensers 1 Are factory set for 115 pounds pressure on all but GB1200 series R 502 which is set at 230 235 pounds head pressure To reduce water consumption head pressure can be increased but ice capacity will be slightly reduced 2 If head pressure is excessive and water usage is higher than normal the condenser must be cleaned 3 Cleaning a water cooled condenser Halstead Mitchell condensers have end plates which may be removed for mechanical cleaning if necessary Water cooled condensers without end plates can be cleaned by flushing with a condenser cleaning solution Acid re circulating pumps and solution are available at refrigeration supply houses COOLING TOWER APPLICATION AVERAGE COOLING TOWER LOAD MAXIMUM COOLING TOWER LOAD MODEL Z B T U PRESSURE DROP B T U PRESSURE DROP PER HOUR 5 1 PER HOUR P S I 42 FRAME GB401W 4372 8 6 5 9655 1 42 127476 GB402W 4372 8 6 5 9655 1 42 155 GB500W 5543 1 0 5 11359 1 72 1 5 GB600W 6558 1 2 8 15619 2 4 2 5 GB903W 11713 1 89 8 25559 3 05 5 79 GB1204W 140
45. 5 Wi PRESS Cut Out MODELS ONLY 7405 GBIAN GTIAN 1 11 88 Ten OTDA ISTA IST 0 5 2 4 817 aiis UNIF LOW MFG 4 00829 09 0 2 gt Y IMEAD 3 IWEAD 12 9 1 6 lt 00 Hims gt 66 00 worcw 21 7999 7 2 NOLS 2716 ACN OZ OL Zig HLIM LOBNNOD SIAYWAHIS ONIWOINI 4 1 15534 gt dYNS g 15 awina WOOD 5 BLACK OET 6 7 BG BLACK GREEN ORANGE IH PREES P PINK COOLED ONLY eur 498 83 SU TE w WHITE WIRE COLOR CODE YELLOW CONNECT WITH 12 WIRE 195 DISCONNECT SWITCH MAXIMUM BRANCH CIRCUIT MINVAUM AMPACITY 40 MAK FUSE SIZE 20 AMP By OLD su ACTUATOR THERMO WATER
46. 5 6 amp 1 1 58 89546 oon OWN 2 ___ 1 2 85 UNIFLOW 63 3170 WATER LFvEL or 38 31 PROBE SOCKET s 02 485 2 24 8 00899 r te WIRE COLOR PRINTED CARD l a ain 239 OR 3 DEFROST SWAP ACTION BR 4 115 v gt PARTS SHOWN CURRENT THE INDICATED REVISION DATE REFER PARTS MANUAL FOR CHANGES WASH SWITCH NOTE FOR 208 V GQ MOVE SROWN LEAD FROM 230 TO 208 V TRANSFORMER TERMINAL JUNCTION BOX FOR INCOMING LINE BEHIND LEFT END PANEL CONNECT TS 204 OF 230 GO with WIRE L FUSE 5116 LISTED 6 w 1394 AMP 9 144444 224279044 MAK 12136 DEFROST 225 WIRE h CHANNEL M WASH t SWITCH ar 7 2 b 98 1315 ran WATER VALVE GES 3 5 AIR COOLED CONTROL MODULE Box ONLY 5 7 lt gt gt 5 5 Pleal TRANS BOX MARKED T
47. 56 1 97 2 42 39475 4 91 1205 14056 1 97 2 7 31949 4 91 5 22 CB1208W 14056 1 97 2 42 39475 4 91 5 22 28 1 4 FRAME GT7W 2342 7 6 0 9655 1 42 7 75 GT300W 3090 7 6 0 9655 1 42 7 75 GT401W 4372 8 6 5 9655 1 42 7 75 GT402W 4372 8 6 5 9655 1 42 7 75 GT500W 5543 1 0 5 11359 142 1 5 6558 142 8 15619 2 4 2 5 ABOVE TABLE WATER 85 FROM TOWER WATER OUT 100 R12 117 PSIG R502 215 PSIG Kold Draft Service amp Parts Manual 44B Installation and Adjustments Control Stream When the cubes are fully frozen they freeze over the drain holes in the water plate surface This increases the water pressure in the circulation system causing the control stream to rise and then go over the dam This water is drained off 15 30 seconds until the level drops below the tip of the low probe This causes the probe s resistance to change which is the signal to the card to initiate the harvest cycle Adjustment of the Control Stream After the circulating water is cold note the control stream and compare with the following diagram Adjust the stream to flow as in the illustration Note As the water cools it may actually sub cool and form ice crystals the water tank This may last minute or two temporarily stopping water plate circulation and the control stream Do not adjust the control stream at this time If the control stream adjusting screw is changed at the
48. AG SWIM MARYA 3 NOLIN AWNS u MIL 449995 ao A 39140129 AI MIMS gt ki WNIWMAL avy soos wae 753 85 Q w KEE 94 5 2 WHYAIWIG AWOL 14 vid 2119 113 25 992 49 02 ASN WINYL 3 2514 235 3399 2902 09 7 062 OL Ze 122 0 92 VANYA 1333 ONIONI aL BD PME paniku 389295 Wei ad IIH Vann ty y 2 IA MOLLOY 969 29 CONDENSING UNIT SECTION SiH PRESS PRESS WASH 5 0 MAXIMUM Fuse SIZE 15 MAP CHANNEL Bin COLA 2 2 ACTUATOR WATER THERMO HERM THERMO 2312 j AS SHOWN OVERHEAT THERMO L PICTORIAL REVISED 12 0 WEIGHT CONTROL SWITCH K REVISED REDRAWN SCHEMATIC
49. C WIRING DIAGRAM COLOR CODE BK BLACK B G BLACK GREEN S SOLENOID WIRING DIAGRAM BU BLUE x KOLD DRAFT ELECTROMECHANICAL ICE CUBE MAKER GRAY 60 HERTZ ORANGE R RED Y YELLOW L1 L2 N CHANNEL HEATER BK 223 gt BIN WASH 5 T STAT HIGH PRESS LOW PRESS COND 4 L 5 1 2 UNIT B G WASH 5 APPLICABLE SEE SPEC SWITCH MODEL DETAIL 10 208 COM 115 894 TRANS 4 gt 2 208 230 MODELS ONLY amp DEFROST SWITCH WATER PUMP B G R R w HIGH 4 WATER VALVE 5 LOW W WEIGHT CONTROL SWITCH WATER LEVEL COLD R 2 BU 23 T STAT PK N HOT GAS VALVE BU B G COLD 1 R T STAT WARM R 0 Y ACTUATOR SWITCH BK w 8 6 B C Y 6 w MOTOR 1 03 508 1066 01 KOLD DRAFT ELECTRONIC ICE CUBER GENERIC SCHEMATIC WIRING DIAGRAM COLOR CODE BK BLACK pay eee
50. CONTROL BL COLD WATER p BG CONTROL BL BL COOL WARM TOGGLE UP ACTUATOR B CONTROL BL 1 RESET R 2 COND ACTUATOR TOGGLE STOP STOP WA 5 LINE DOWN SToP BL CW AP P Y G WATER DEFROS VALVE VALVE ACTUATOR W w MOTOR W Freeze Cycle EC4 Freeze cycle with evaporator below 20 F During the freeze cycle the evaporator and the actuator thermostat get cold enough approximately 20 F to reset the actuator control ready for the next defrost cycle The particular time when this happens is unimportant since the water control stays off and prevents defrost until the cubes are full and the water is used up and there is no change in the current flow at this step During this period the water is being used up in the formation of ice and the water level drops slowly in the circulation tank and the water level probe tube EEC4 Freeze cycle with evaporator below 26 F During the freeze cycle the evaporator and the thermistor probe get cold enough approximately 26 F to reset the actuator control ready for the next defrost cycle The particular time when this happens is unimportant since the water control stays off and prevents defrost until the cubes are an
51. D ON comes on bright The evaporator continues to cool at 32 F minute layers of ice form on the top and the 4 sides of each cell As this process continues the water level will decrease in the main water tank and the water level probe assembly NOTE When the circulating water reaches a temperature of 32 F it MAY be supercooled and it MAY partially crystallize in the water tank If this occurs the flow of water in the control stream nozzle will stop or fluctuate considerably and most of the circulation will stop for about 30 seconds This is STRICTLY A NORMAL OPERATION AND THE CONTROL STREAM SHOULD NOT BE ADJUSTED AT THIS TIME When the evaporator temperature reaches 26 F the evaporator thermistor probe signals card to set the actuator control cold orange L E D ON comes bright The water continues to freeze until each cell is almost completely full of ice As the ice comes closer to the jet stream in the center of each cell the head pressure in the water plate increases causing the control stream to rise and flow over the dam in the control stream box This water will be dissipated to the drain pan lowering the level in the water level probe assembly Within 15 30 seconds the water will leave the bottom thermistor probe and expose it to air The harvest cycle is initiated every circuit in the system is simultaneously engaged The hot gas valve opens sending hot gas to warm the evaporator The water in
52. E 5 ST 1225 SMALLER WELDED VALVE BODY Y BLEEDER RESISTOR ACT MOTOR JUNCTION BOK FOR INCOMING LIME BEHIND LEFT END PANEL CONNEZT Te 115 GO HT wine 398 3 sit 148160 BELOW 4 come 5 ALTERNATE CONNECTIONS y SCHEMATIC CONTROL an sas MODELS ONLY Hi PRESS 56 AR Mores he L 36 208 6644 cides Q 204 ia ua P WATER 1 GT DEFROST TF RELAY VALVE H w Y CHANNEL 1 A le e w P MOTE SOME MODELS THIS 08 1373 68401 COMMECTION 15 78 5 sss MADE IM 8 5155 8 WATER VALVE gt 5 5 SWITCH CONT POL 288 1324 6045A MODULE GTA 91 4820 564 amp GT30m PARTS ARE SHOWN CURRENT THE REWISIOGN DATE REFER PARTS MANUAL FOR CHANGES iran PROBE TECUMSEH 4 5 68 3176 H TERMINAL USED ONLY FoR HARVEST SWITCH ICE MAKER WIRING DIAGRAM WITH STATUS INDICATOR 84 8827 GT 4 8
53. ERMINAL TERMINAL USED ONLY FOR HARVEST SWITCH WITH STATUS INDICATOR eja a z fee il 213 5 8 __ 55 348 ICE MAKER WIRING DIAGRAM w GTEOSW DATE 6 19 85 PICTORIAL UNIFLOW MFG 8 2 19 85 ERIE 2 inn Tm HIMA OL SDMS HILY 950695 ONIN AIMA 371 Mann SMIG wm NMI 980 2340 ON 1u d 9152530 Sow Nr 3447 LOM ia NJO anes 1 Lele 3704 15966422 353d of 4 OWS Mars 00 007 009 1 9 BUN 5 ti in 1 b 001 IS 25 Lined
54. Flush laterals Holes in left side cubes Superheat too low Close 1 8 turn increments until corrected Holes in right side cubes Superheat too high Open TXV 1 8 turn increments until corrected Holes in all cubes sometimes but solid cubes most of the time Power shut off while water is filling tank or temporary power loss near the end of the freeze cycle Correct power source Bin control turns cuber off during water fill Interlock between water fill control and bin control not operating Check PC card Bin thermostat turns cuber off during water fill This condition can happen occasionally on any cuber but the frequency can be reduced by adjusting bin thermostat warmer counter clockwise The machine will then turn off more quickly when ice contacts the bulb Test by applying ice cubes to the bulb tube The machine should restart within five minutes Holes in cubes all of the time Control stream does not go over the dam at the end of the freeze cycle Water level too low Measure from the top edge of the water tank down to the water level in the water level control tube Sight carefully across the water in the control tube See Chart of Water Levels Increase water level if required Lower water level probe too high Adjust water level probe to remain immersed in water in control tube at least 10 seconds after control stream sta
55. GO MOVE BOTH Bown LEADS FROM 230 V TRANS TERM f aap 5 H i 15 ne S253 58 3228 MASTER gt N CONTROL MODULE BOK a 2 ASEM jus COMPRESSOR 5 INTER PROTECTED J UNDER PRIMARY PHASING NOTE 8 0 01 USB TRANG BOK OPENS CUBEA WILL OPERATE UNTIL 747 TERMINAL USED ONLY SLAVE WATER PUMP STOPS WATER CHANNEL valve wi 261 PLATE STARTS OPEN THEN THE COMPRESSOR WILL OPERATE UNTIL 0 35 SWITCH RELAY FOR HARVEST Switcw WITH STATUS INDICATOR SLAVE PUMP SWITCH CIRCUIT MUST OPEN BEFORE YELLOW CIRCUIT CLOSKO 5 1 15 68 i 4 sas 128 Date 6 0 85 ooume woes ons DATE 10 26 26 sesama 5 DATE 3 21 69 TECUMSEH 7524 ICE MAKER WIRING DIAGRAM 58205 g ASSEM PICTORIAL L 2 21 9 07 79 59 3 260 849 ICHINO IAS 58 4 1 tee
56. Horizontal Unit Mounts on a Bin 42 Wide GT Slimline Unit Mounts on a Bin 28 1 2 Wide GY Self Contained Compact Unit 30 Wide GS Self Contained Compact Unit 24 Wide IS Self Contained Dispenser 31 1 4 Wide Kold Draft Service amp Parts Manual 3 B 10 1000 Ibs 11 1000 Ibs 12 1200 lbs 16 1600 Ibs 20 2000 Ibs Installation Specifications 60 Hertz Electronic Cubers FUSE HACR MINIMUM MINIMUM BREAKER SIZE CIRCUIT INCOMING AMPS MODEL HP AMPACITY WIRE SIZE NORMAL MAXIMUM GT301A 3 4 22 7 10 25 35 GT301W 3 4 17 12 20 25 GT401A GB401A 3 4 25 10 25 40 35 GT401W GB401W 3 4 18 12 20 25 GT401R GB401R 3 4 20 9 10 25 35 GT402A GB402A 3 4 16 12 20 20 GT402W GB402W 3 4 15 14 15 20 GT402R GB402R 3 4 16 9 12 20 25 GB503A 1 14 4 14 15 20 GT503W GB503W 1 13 3 14 15 20 GT503R GB503R 1 12 2 14 15 20 GB603A 11 000 BTU 20 12 20 30 GT603W GB603W 11 000 BTU 15 14 15 20 GT603R GB603W 11 000 BTU 18 9 12 20 30 GB903 1003W 14 000 BTU 17 12 20 25 GB903 1003R 14 000 BTU 19 3 12 20 30 GB1204W 27 600 BTU 28 2 10 30 45 GB1204R 27 600 BTU 28 2 10 30 45 GB1205W 22 500 BTU 17 8 12 20 30 GB1205R 22 500 BTU 17 9 12 20 30 IS401A 3 4 30 10 30 40 15401 3 4 23 10 25 30 15503 1 15 14 15 20 1 3 15 14 15 15 GY3W 1 3 15 14 15 15 GT7A 3 4 22 7 10 25 35 GT7W 3 4 17 12 20 25 NOTE Maximum Branch Circuit Fuse or HACR t
57. Improper setting of the fin thickness Under tolerance fin thickness may cause icing of injection and return holes on the water plate surface Refer to the alignment page 2 If the injection holes on the water plate become blocked some of the freezing cells will be devoid of ice at time of harvest The blockage can be removed by using a 1 16 drill bit to clean the injection holes Note Freezing cells void of ice may collapse due to expansion of ice in surrounding cells If the injection holes are cleaned and water is still not flowing then the laterals have become clogged To clean the laterals remove the rubber plugs at the end of the water plate a small brush through the laterals and flush out all debris Place new plugs in the holes using an allen wrench or similar blunt end tool This stretches the plug so it will be tight when the tool is removed 4 in the lateral strips on the underside of the water plate may prevent the control stream from rising up over the dam at the end of the freeze cycle This will extend the cycle and cause water to freeze into the surface of the water plate If the laterals are cracked the water plate should be replaced g Water plate silicone treatment In certain areas where water is unusually pure with practically no dissolved solids the water plate must have fairly frequent applications of silicone to prevent excessive ice adherence Application of silicone treatment is
58. MMO2 VAM Wet 1231 oY 34990 2503 OMIHS uM 2 294 192 55344194 9 9 3002 5 3 3 19 4 Gi 67800 1 19 5 53 223 78 17 01 1 NOSY mums MLS WLS 19 9169 aasn a 25 Livuovid SN ISIFA 351 556 95 25 5 2 201 95 WS OFLPY 7231 7 Pow or IW KING 3 2 R 0 i Su l ww gt O lt 1 ISIYA 03177 1511918 viei Lis z A OF me gt an 9 ta aa Lie 1 8 11 SY
59. ON TOGGLE SWITCH BG TOGGLE I BIN j CONTROL CONTROL LOW COLD CONTROL F COOL WARM TOGGLE UP BL BL ACTUATOR 2 CONTROL To RESET COLD R COND ACTUATOR WAT PU 2 LINE STOP ACTUATOR W MOTOR Water Fill EC1 Water fill circulating water above 45 F Current to condensing unit water pump and water valve Water filling circulation tank and control tank Water pump circulating water through water header distribution laterals and jet holes to individual evaporator cells Evaporator is cooling water approximately 2 minutes EEC1 Water fill circulating water above 45 F Current to condensing unit water pump and water valve Water filling circulation tank and water level probe assembly Water pump circulating water through water header distribution laterals and jet holes to individual evaporator cells Evaporator is cooling water approximately 2 minutes Kold Draft Service amp Parts Manual 13B Electrical Circuits PUMP amp DEFROST 9 SNAP ACTION _ TOGGLE SWITCH TOGGLE
60. October 1982 through December 1990 Since January 1991 we have been providing 102 1165 01 as a replacement for both GBR 03135 02 and GBR 03135 02 E P C cards To replace a GBR 03135 02 card a GBR 03122 wiring adapter kit is required TB2 upper of P C Card B E WL ele cle ese ow 5 1 5 1 2 location of B bin probe which turns the mas according to WL CW RELAY 4 LED LED 2 Pins and 4 location to connect evaporator probe which relays evaporator temperature to P C card allowing card to set to the cold or warm side the cold water control actuator control and thermal over temperature protector KOLD DRAFT 102 1165 01 3 WL Pins 5 6 7 and 8 location to connect water level probes which turn the water inlet valve on and off W It initiates harvest when water falls below the lower probe L when actuator control is set cold Adjustable Potentiometers and L E D s located beneath TB2 BIN 1 Bin Potentiometer Adjustment to turn unit off on contact of bin probe with ice in 15 30 seconds provided the water fill is satisfied 2 Actuator Potentiometer Adjust to raise water plate
61. PRESS BOX FOR INCOMING LINE BEHiING LEST ENG PANEL CONNECT ig WIRE TO 230 4 OR 208 00 SEE NOTE DISCONNECT SWITCH MINIMUM AMPACITY 15 MAXIMUM 5 SIZE 15 AMP GB 208 WATER Pume WIRE COLOR CODE BIN THERA PUMP amp DEFROST SNAP ACTION ii 1 0 MOVE BROWN 230 v 206 THANSFORMER TERMINAL EAD FROM CHANNEL HEATER 1 SCHEMATIC CHANNEL Y w w 5 WATT Gg 2372 OVERHEAT TWEANO F REvego 12 19 80 SNAP ACTION GEZAN amp MODELS GB2W41 PIC REVISED REDRAWN WEIGHT CONTROL 61 6 11 2 0 YOEI SS 9161 90 99 61 24 8 12 9 MOO anos amanan ZE t 1 1 SE 047 5 Leng 53 D siao AEO ee wA E a 119 QL 02 IZ 02 ALIOVowy HALME ILON Zig Hai
62. Parts Manual 27B Trouble Cause amp Remedy CAUSE SYMPTOM REMEDY TROUBLE Water plate closes before cubes drop Actuator pot on PC card adjusted too cold Adjust to warmer position ccw Waterplate should remain down 10 to 30 seconds after ice drops Faulty evaporator probe Test probe resistance Faulty PC card Test PC card Actuator thermostat adjusted too cold Adjust to a warmer position ccw Water plate should remain down 10 to 30 seconds after ice drops Bent evaporator fins Straighten fins Water plate stays wide open after defrost and all ice is out of the evaporator Orange L E D stays lit on PC card Adjust the actuator control slightly clockwise Test the evap probe and PC card Orange L E D is off but no voltage to yellow actuator motor lead Check wiring Replace actuator toggle switch No voltage to 3 orange lead Actuator thermostat adjusted of actuator thermostat too warm or bulb has lost charge Voltage to 3 orange lead of Wiring loose or defective actuator thermostat but no voltage to yellow actuator motor lead actuator toggle switch Water plate open evaporator will not defrost Refrigerant charge low Check for leaks and recharge Inadequate hot gas volume Check for tube obstruction or cold condenser Defective hot gas valve Replace valve or coil Red L E D
63. SE SYMPTOM REMEDY Water valve stays closed Water level probe connector loose or dirty Clean connector and install properly Low probe lead to right Use NC123 electrical contact cleaner Defective water assembly probe Check probe resistance Circuits okay 115 volts to water valve Coil open Flow control jammed or cockeyed Replace coil clear valve passages or replace valve Defective PC card Test PC card Water valve stays open after water covers the upper probe tip Will not shut off Water level probe connector loose or dirty Clean connector and install properly Low probe lead to right Use NC123 or any electrical contact cleaner Defective water assembly probe Check probe resistance Defective PC card Test PC card Water pressure below 15 P S I Increase water pressure to ice machine Defective water valve Replace water valve Water valve stays open more than 5 seconds after water covers the upper probe tip Upper probe covered with scale Clean cuber with ice machine cleaner necessary remove and clean probe carefully Kold Draft Service amp Parts Manual 32B Service and Troubleshooting GB900 GB1000 GB1200 GB4 These ice makers differ from other Kold Draft ice makers in that two ice making sections are refrigerated by one condensing unit GB900 GB1000 GB1200 series are
64. W PRESS COND 4 L 5 1 2 UNIT B G WASH 5 APPLICABLE SEE SPEC SWITCH MODEL DETAIL 10 208 COM 115 894 TRANS 4 gt 2 208 230 MODELS ONLY amp DEFROST SWITCH WATER PUMP B G R R w HIGH 4 WATER VALVE 5 LOW W WEIGHT CONTROL SWITCH WATER LEVEL COLD R 2 BU 23 T STAT PK N HOT GAS VALVE BU B G COLD 1 R T STAT WARM R 0 Y ACTUATOR SWITCH BK w 8 6 B C Y 6 w MOTOR 1 03 508 1066 01 4 8 2 4 1 G 2 01 WRrISLHY L We ___ aso 14 7 GZ 02 9534 01 TUNN TUM QL Sw 54015 10 410 GO0 31 LON Wess SMM Gor 77826 25 BO gt M A OvERHEAT THERMO
65. Y 4 15 H 8 4135 4 ome 2 CONTROL z 4 Switch MODULE 4 lt ng aT tale gt 5 3 x Re 5 3 5 R 2 DUMP SWITCH GT 334 6 33 ACT MOTOR PARTS SHOWN CURRENT REVISION REFER gt s 27 PARTS MANUAL FOR CHANGES J 4 5 rio 55 4174458 15 208 1304 GO SWIRE TERMINAL ONLY 23 9 20 FOR HARVEST SWITCH 22 BIN WITH STATUS INDICATOR 5 88 3135 1 L be CARD REL STAT Sa SOCKET 1 3 29 85 688 03201 2 85 3 2 85 5 9 19 85 0 5 UNIFLOW MFG WIRE COLOR ONLY aY L DEFROST f SNAP ACTION Swit BR BROWN BLACK GREEN GRAY ORANGE j YELLOW ACT TOGGLE NOTE ON MODELS ONIN MADE BEFORE 8 SEPT 1 1987 THE DEFROST VALNE 15 ASSEM GB 374 LARGER VALG BODY THE SAME MODELS MADE AFTER SEPT 1 17 2 THE DEFROST VALV
66. acitor changes the phase and boosts the voltage to 200 volts to the gray winding of the motor to give clockwise rotation Cams rotating clockwise pull up the springs and water plate Current to condensing unit defrost water valve and actuator motor approximately 20 seconds The cold water thermostat bulb on the edge of the evaporator will warm up at about this time or during closing and switch the cold water thermostat to the warm side connecting the red to the pink circuit since red is energized the defrost valve stays open 8 Water plate starts closing Warm evaporator probe on the side of the evaporator switches actuator control from cold position disconnecting the first circuit to red the current from black green to the red circuit continues through the actuator toggle and pump toggle switches The actuator control switching to the warm position completes the red orange circuit and through the actuator toggle gives 115 volts to the yellow winding on the actuator motor The capacitor changes the phase and boosts the voltage to 200 volts to the gray winding of the motor to give clockwise rotation Cams rotating clockwise pull up the springs and water plate Current to condensing unit defrost water valve and actuator motor approximately 20 seconds The cold water control will warm up at about this time or during closing and switch to the warm side turning off the red L E D Models with GBB 03135 02 E P C cards will turn off the hot gas
67. and spring bosses Bosses should be tight but care should be taken not to strip out the plastic threads Electro mechanical cubers Install the hinge screws and plates Reinstallation of Water Plate and Tank Assembly 1 With the open end of the water plate to the right slide it back into the cuber and to the left of its normal position Electro mechanical cubers Install the lift rod cotter pin and collar assembly with the small end of the crook to the right of the pump toggle switch 2 Hook up the springs to the water plate Rear spring first 3 Plastic hinge brackets are hooked on and snapped in place For metal hinge brackets holes must be drilled and tapped per drawing Run the top screws through the hinges assemble the lock washers and nuts loosely Run the bottom screws through the hinges and into the plate then tighten the nuts and screws It may be easier to reach the rear screws if the if the cams are run up to the twelve o clock position See the following illustrations Kold Draft Service amp Parts Manual 40B Service and Troubleshooting 00580 5 5 LOOSEN ACTUATOR MOTOR IF NECESSARY WHEN SHIMMING FRONT 2 THICKNESSES BRACKET 050 OR 060 00111 SMALLER EVAPORATOR 5 SHIM IF NECESSARY 050 THICK lt 5 gt SPACER CHANNEL 4 EVAPORATOR BEARING
68. and the blue circuit to the water valve also from blue through the actuator thermostat first connection is complete to the red defrost circuit From red current flows through the actuator toggle switch giving 115 volts on the gray actuator motor circuit current through the capacitor which changes phase and boosts the voltage to 200 volts on the yellow actuator motor circuit giving counter clockwise rotation Current from the blue circuit flows through the cold water thermostat to the pink circuit and defrost valve Cams start rotating counter clockwise pressing on the cam brackets on the water plate to release it from the ice approximately 15 seconds The open defrost valve allows hot refrigerant gas from the compressor to go through the evaporator coil to start releasing the cubes 5 Start of defrost Cubes are full and some have almost frozen over jet holes forcing some of the remaining water faster through the control stream over the control stream dam lowering the water level rapidly in the water level probe assembly until the bottom thermistor probe is exposed to air and trips the water level control on in 5 20 seconds Current flows to condensing unit water pump through the weight level control and the blue circuit to the water valve also from blue through the actuator control first connection is complete to the red defrost circuit From red current flows through the actuator toggle switch giving 115 volts on the gray actuator motor
69. ate Current to the condensing unit actuator motor water valve and defrost solenoid approximately 20 seconds EEC6 Same as EC6 18B Kold Draft Service amp Parts Manual Electrical PUMP 4 DEFROST SNAP ACTION TOGGLE SWITCH BG TOGGLE UP BIN CONTROL BL Low OuIGH BG BL BL ACTUATOR B CONTROL BL RESET k 5 2 2 UNIT FAN END DEF 0 BG SWITCH STOP STOP WATER up PUMP LINE DOWN op RAISE DOWN LOWER BL CW 1 5 W WATER DEFROST VALVE VALVE ACTUATOR MOTOR W Defrost Defrost Water plate is wide open and actuator toggle rod on the actuator motor coupling pushes the actuator toggle switch to the left stopping the motor with the water plate in the down position and completing the third connection to the red defrost circuit Current to the condensing unit water valve and defrost solenoid Excess water concentrated with minerals drains from the water tank Freshes water washes water plate and tank Hot refrigerant gas continues flowing through the evaporator releasing the ice slowly Edge of the evaporator and actuator thermostat bulb remain cool 32 to 35 F
70. bs lbs Compressor Size 1 2 HP 3 4 HP TXV Controlled TXV Controlled Kold Draft Service amp Parts Manual 53B Installation Specifications Model Cube Size Full Water Level Distance below top of tank Tank Insert or Extension Loop Approximate Trip up Level Above Tank Bottom Suction Pressure after Defrost Suction Pressure before Defrost Defrost Pressure Cycle Times approximate Refrigerant Charge Remotes R see note below Refrigerant Type Approximate 16 of ice batch Compressor Size GT7 2 3 Insert Loop 1 2 11 13 psig 0 psig 40 60 psig 30 26 15 18 Minutes Air Cooled 13 oz Water Cooled 10 oz R 12 3 1 2 2 Ibs 3 4 HP Cap Tube Controlled 3 3 4 2 3 8 GY3 2 3 Insert Loop 1 2 27 psig 3 6 psig 4 7 psig 40 60 psig 61 58 32 38 Minutes Air Cooled 15 1 2 02 Water Cooled 10 oz R12 3 1 2 2 Ibs 1 3 HP Cap Tube Controlled 3 1 4 2 3 8 GS6 HK 1 5 8 25 psig 4 8 psig 40 60 psig 48 Min 10 oz 2 1 3 Ibs 1 5 HP Cap Tube NOTE Remote condenser application cubers require a total minimum charge of 10 1 2 lbs GB1200 series cubers use R 502 all others use R 12 For maximum fuse size check electrical rating plate on left rear of cuber 54 Kold Draft Service amp Parts Manual KOLD DRAFT ELECTRO MECHANICAL ICE CUBER GENERIC SCHEMATI
71. control switch adjusts the water level Counter clockwise increases clockwise decreases the water level of subsequent fill cycles Adjust only in 1 8 turn increments The following procedure can be used to adjust the differential and trip up point after the trip down level is properly set with the range screw Turn off the inlet water and put the unit into defrost by pulling down on the water plate or if it is near the end of the freeze cycle raise the control tank Make sure most of the water drains out of the circulation tank Repeat this process holding down the control tank until the circulation is empty Allow the water plate to close Put a one ounce check weight the control tank 1 50 in coins no pennies or nickles is close to one ounce While turning the differential screw slowly clockwise push down and release the control tank until it stays down because of the check weight Then slowly turn the differential screw counter clockwise until the control tank snaps up Remove the check weight and turn on the water The control tank will now snap up normally at the end of the cycle when the water level is about halfway between the insert disc and the bottom of the tank The water level after the cubes are frozen will normally be near or below the top of the control tank insert for and HK machines Refer to the Chart of Water Levels etc If the level is above this point when the control stream rises and if the
72. controlled cubers regular type Electronic only bold type Thermostatically controlled cuber only italicized type TROUBLE CAUSE SYMPTOM REMEDY Cuber will not start Line fuse blown Check circuit for short or ground Replace fuse Bin full of ice Open circuit in cord or feed wires Repair or replace No money in meter if meter is used Room too cold below 45 deg F Warm room Consult factory for cold room application Overheated evaporator Check defrost circuit Blown fuse on PC card Replace fuse Bin probe disconnected or loose Install bin probe properly Bin potentiometer full counter clockwise position Adjust clockwise colder Defective bin probe Check probe resistance Shorted evaporator probe Check probe resistance Bin relay coil A good coil has 100 ohms resistance Replace if defective Check wiring Defective PC card Test PC card Condensing fan operating but not the compressor Compressor stuck or defective Jar with mallet defective Replace if Defective capacitors or relay Replace capacitor or relay Defective overload switch Repace overload switch or if internal replace compressor Open wash switch Switch to position or replace if defective Open high or low pressure Check charge and condenser cut out Compressor operating but n
73. cuit to the lowering counter clockwise side of the actuator toggle switch so that when the front cam pushes the actuator toggle switch to the right the actuator motor will immediately reverse and with cams rotating counter clockwise the water plate will re open Current to condensing unit water valve and through the pump and defrost toggle switch to the actuator motor Any other obstruction between the water plate and the evaporator can cause the same effect as a cube on the water plate If the collar on the pump and defrost switch lift rod is set incorrectly so the switch will not go all the way up abnormal opening will occur Further if the water level is set much too high and or spring is unhooked allowing the water plate to sag during the water fill so that the defrost switch goes down the circuit will be completed to the actuator motor and the plate will open Likewise abnormal opening can be created during the water fill or the beginning of the freeze cycle if the water plate is pulled down by hand stretching the springs until the pump and defrost switch goes down completing the circuit to the actuator motor This is done to rinse the ice machine after using ice machine cleaner Opening by hand is also used to observe the jet streams by allowing the cams to go down to horizontal then pushing up on the pump toggle rod Further opening by hand allows a quick partial check of the weight control switch as the water drains from the control tan
74. d the water is used up and there is no change in the current flow at this step During this period the water is being used up in the formation of ice and the water level drops slowly in the circulation tank and the water level probe tube An orange L E D is mounted on the printed circuit card below the actuator control potentiometer as a service aid It is on bright when the actuator control is in the cold position Kold Draft Service amp Parts Manual 16B Electrical Circuits PUMP amp DEFROST SNAP ACTION _ 085 TOGGLE SWITCH TOGGLE BIN E CONTROL COLD WATER p Suk BG CONTROL BL BL COOL WARM ACTUATOR CONTROL R P R ACTUATOR TOGGLE BG SWITCH COND UNIT FAN TOP STOP UP LINE ACTUATOR MOTOR End of Freeze Cycle Start of Defrost 5 Start of defrost Cubes are full and some have almost frozen over jet holes forcing some of the remaining water faster through the control stream over the control stream dam lowering the water level rapidly the control tank until it is light enough for the weight control switch to snap up Current flows to condensing unit water pump through the weight control switch
75. d them together until they drop into the bin After ice falls out the side of the evaporator warms up rapidly to 45 F 15 30 seconds The actuator toggle pushed right also completes yellow orange circuit but with no power in the orange circuit the actuator motor gets no power during the defrost period Kold Draft Service amp Parts Manual 19B Electrical 5 DEFROS 5 SNAP ACTION TOGGLE SWITCH TOGGLE BIN CONTROL CONTROL BL COLD WATER CONTROL COOL WARM BL NTROL COLD R COND UNIT LINE DEFROST VALVE ACTUATOR MOTOR W End of Defrost Water Plate Starts Closin EC8 Water plate starts closing Warm actuator thermostat bulb on the side of the evaporator switches actuator thermostat from cold position disconnecting the first circuit to red the current from black green to the red circuit continues through the actuator toggle and pump toggle switches The actuator thermostat switching to the warm position completes the red orange circuit and through the actuator toggle gives 115 volts to the yellow winding on the actuator motor The cap
76. d then reverse The meter should drop to about 150k ohms and then climb back to infinity 4 If the meter goes to the approx ohm readings listed above and stays there the capacitor is shorted should be replaced 5 the meter doesn t deflect at all the capacitor is open and should be replaced Kold Draft Service amp Parts Manual 37B Service and Troubleshooting Pump Intake Hose Collapsing 1 If hose is too long or has been twisted the tubing will collapse These two conditions can be corrected very easily by checking the length so that the tubing is approximately 3 3 8 long or by twisting the tubing to make certain it is straight 2 Dirty water tank outlet screen In this instance the tubing will collapse and remain collapsed until the screen is cleaned This could cause cloudy cubes because not enough water is being circulated 3 Occasionally at the beginning of a cycle if the water is super cooled and crystalization occurs in the water the crystals would plug up the screen and cause a collapse of the hose This condition would last for less than a minute until the crystals thaw and the ice maker would begin functioning properly This condition is not serious and would not damage any of the ice maker components The condition cures itself and is of short duration 4 The hose may also collapse due to aging The hose should be replace and a spring GBR 00212 01 installed Water Plate Problems 1
77. e connection to the defrost circuit and start the circulation water pump Water Inlet Valve The water inlet valve is mounted int front left of the freezing compartment and controls the rate of flow of water into the water tank when the cuber is filling It is a constant flow type requiring a minimum 15 psi An external Y type strainer is used with the valve For pressures over 100 psi or if there is water hammering a pressure regulator should be used Actuator Motor and Cam Assembly The assembly is located just to the right and front of the evaporator The actuator motor drives the cam shaft directly and is reversible A cam on each end of the shaft forces the water plate down separating the water plate from the ice in the evaporator The two springs on the cams pull the water plate up at the end of the defrost cycle and hold the water plate against the bottom of the cams during the freeze cycle To prevent the water plate from opening after current has stopped flowing to the actuator motor a drift stop spring with a plastic end GBR 00965 presses against the actuator motor shaft on the front of the motor If the drift stop is not aligned with the motor shaft it can be removed easily and bent into shape Evaporator Probe GBR 03176 Resistance values of the probe change due to temperature changes on the evaporator These changes are transmitted to the printed circuit card and allows one probe to perform three functions cold water contro
78. e pressure and temperature thus excessive frostback and long cycle If this condition does not correct itself during the second cycle it will be necessary to adjust the superheat on the expansion valve closing the valve clockwise 1 8 to 1 4 turn to increase superheat reducing the suction pressure and preventing frostback If valve hunts varies suction pressure up and down more than 2 to 3 lbs when suction pressure is below 13 Ibs it indicates that the valve should be opened more 2 The GT300 series are capillary systems and do not have an expansion valve Water Plate The water plate is made of approved plastics and is used to distribute the water through jet holes into the freezing cells of the evaporator and also to return water through two drain holes in each cell in the water plate On the front of the water plate is a control stream that should be set at the base of the dam once the water fill is complete Backing the screw out increase the flow At the end of a cycle when cubes are virtually frozen there is an increasing water pressure in the system causing the stream to rise and go over the dam dumping dreg water Circulation Tank The circulation tank is secured to the bottom of the water plate It serves as a reservoir to hold enough water to make one batch of ice Kold Draft Service amp Parts Manual 6B Operational Components Circulation Strainer The circulation strainer has a large screen inserted in the
79. enough to open the condenser water va lve on a combination air water cooled machine then the air cooled condenser must be blocked to raise the pressure or the machine should be run long enough to open the condenser water valve Extreme care must be used to ensure all the water is blown out Kold Draft Service amp Parts Manual 48B Operational Components Construction of Electro Mechanical Cubers These cubers are similar in construction to the electronic models except they are thermostatically controlled Refrigerant Control A thermostatic expansion valve is used on GB IS GT except GT3 and GT8 models GT3 GY and GS models are capillary tube systems Control Tank and Switch A control tank is mounted on a weight switch and is connected to the main water circulation tank by a flexible tube The water level in the control tank is the same as the water level in the main circulation tank When the proper amount of water is taken in at the beginning of the cycle the weight of the control tank will pull down on the switch lever to end the fill cycle Actuator Motor and Cam Assembly The actuator motor drives the front cam cam shaft and rear cam to open and close the water plate which is attached to the cams by extension springs the beginning of the harvest cycle the cams start to turn counter clockwise separating the water plate from the evaporator As they continue to turn the water plate is opened fully allowing for
80. here is no frostback to the compressor at the end of the freeze cycle Waiter level too high Adjust water level according to Chart of Water Levels etc Refrigerant low Check for and repair leak Add refrigerant as required Compressor defective Replace compressor Control stream too low Adjust control stream Fan not operating Check fan wires replace motor if necessary Some cubes do not form in the Spray holes at the ends of the Thaw out by shutting off unit right side corners of the laterals are frozen shut and will and adjust the cold water evaporator not thaw because of very low control warmer CCW Adjust incoming water temperature expansion 1 8 turn closed Ice freezes to water plate Water fill level too high Adjust fill level per Chart of causing shear pins to break Water Levels etc Incorrect clearance between the water plate and evaporator Adjust water plate and or evaporator as required Misadjusted control stream Adjust control stream Control stream will not go over dam at the end of the freeze cycle Cracked water plate causing pressure 1055 Repair or replace water plate Water plates out of synchronization on GB4 GB903 GB1003 or GB1205 cubers See GB900 GB1000 section Kold Draft Service amp Parts Manual 31B Trouble Cause Remedy TROUBLE CAU
81. iodically If bin drain has any horizontal run remove ice from left side of bin and flush with two 2 quarts of hot water monthly Long drain lines should be flushed weekly 1 Clean exterior of bin frequently 2 To clean the interior follow the instructions provided with bin Empty the storage area and disconnect the electrical power supply to the maker s 4 Remove the ice maker inspection panel top left and right end panels and drain pan Sliding bin doors may be removed by lifting them up then pulling out from the bottom 5 When cleaning the ice maker follow the ice maker cleaning instructions and clean the bin last 6 Replace all enclosure panels and drain pan before re connecting the electrical supply Winter Conditioning Ice cubers that are idle in the winter months require preparation to prevent damage from freezing The following procedure should insure the safety of the cuber so that it can be started easily the following year 1 Shut off and detach the water supply to the ice cuber 2 If the cuber is a combination water and air or a straight water cooled condenser the must be running while air is introduced through the condenser water inlet connection to blow the water out of the condenser coils 3 The cuber should then be run into defrost to drain the water tank and air should be introduced into the water inlet to blow out the water solenoid Note If the condensing unit is not warm
82. irements will be minimized with faithful preventative maintenance including good housekeeping at the installation site CALL FOR SERVICE AS SOON AS A POSSIBLE PROBLEM IS NOTICED MAY AVOID EXTENSIVE REPAIRS Ice Cuber Cleaning Instructions Use rubber gloves and eye protection An apron is recommended N amp GT400 500 and 600 series bag of Kold Draft machine cleaner 558 01000 2 quarts GS GY GT300 1 2 bag of Kold Draft ice machine cleaner 55R 01000 1 of clean warm water 180 F for each evaporator water plate assembly to be cleaned If the cuber is operating wait until a harvest cycle occurs then trip the WASH switch to as soon as the water plate begins to close Empty all ice from the storage bin and shut off other ice makers on the same bin After the water fill is completed remove the cap from the water level control and pour about half of the mixed cleaner into the control tank or tube tube Caution In electronic cubers do not remove the water level probe assembly completely or lower the control tube far enough to overflow Replace the cap then pour the remaining cleaner into the control stream box Allow the cleaner to circulate for approximately 15 minutes then pull the right side of the water plate down until the pump stops and hold it until the pump will not
83. k and the switch snaps up with a small amount of water left in the tank during this check the the control tank tube it must be a full 11 long to prevent binding between the control tank and the control stream box on the water plate EEC12 Same as EC12 Kold Draft Service amp Parts Manual 23B Electrical Circuits PUMP amp DEFROST 5 SNAP ACTION TOGGLE SWITCH TOGGLE BIN CONTROL CONTROL BL COLD WATER BG CONTROL BL COOL CONTROL RESET P COLD R COND WARM 1 END DEF TOGGLE UNIT 9 SWITCH 5 STOP WATER wd UP UP PUMP WN 9 LINE 5 LOWER DEFROST VALVE ACTUATOR W w MOTOR W Water Plate Closing After Abnormal Openin EC13 Water plate closing after abnormal opening Since the evaporator and actuator control are warm during abnormal opening a circuit is complete through the actuator control to the orange circuit of the actuator toggle switch As soon as the water plate is wide open and the actuator toggle rod on the motor coupling pushes the actuator toggle switch to the left the motor will immediately reverse and with cams t
84. l actuator control and overheated evaporator cut out 1 COLD WATER CONTROL opens the hot gas valve during the fill cycle when the evaporator cools to 45 F red L E D shines bright on P C card The hot gas Kold Draft Service amp Parts Manual 7B Operational Components will shut off when the water fill is complete or when the evaporator warms to 50 F red L E D off or dimly lit 2 ACTUATOR CONTROL resets cold when the evaporator reaches 26 F orange L E D shines bright and will send power through the actuator toggle switch to actuator motor at harvest It also sends power to the actuator motor when the evaporator warms to 40 F after harvest to return the water plate orange L E D off 3 OVERHEAT TEMPERATURE FUNCTION shuts the cuber down when the evaporator temperature reaches 1407 F should the hot gas valve stick open It will re energize the cuber when the evaporator cools to 120 F Bin Probe GBR 03177 The bin probe is mounted to a flexible probe holder on the ice chute or through a bracket in the bin resistance values change with temperature fluctuations at the probe tip due to the proximity of ice These changes are transmitted to the Bin Control on the P C card and turn the ice maker on or off To Set Bin Control 1 not attempt to set the Bin Control while the unit is filling with water The P C card has a circuit to fill the water tank befor eshutting off
85. let valve opens and the water rinses the water plate The actuator circuit is energized through the actuator control through the actuator toggle switch to the actuator motor causing the actuator motor to turn counter clockwise and separate the water plate from the evaporator When the water plate opens approximately one inch the pump and defrost switch drops turning the water pump off The pump switch now completes a second Kold Draft Service amp Parts Manual 11 Sequence Operation circuit to the defrost valve to keep it open during the harvest cycle The actuator motor shaft continues to turn 1 2 turn revolution until the trip lever on the actuator motor snaps actuator toggle to the right and breaks the actuator circuit stopping the actuator motor in the down position As the evaporator warms the cubes on the left edge of the evaporator slide out of the evaporator and rest on the water plate There is a small fin connecting the bottom of the cubes together so that they will come down in unison and clearing the water plate slide into the bin where they will break apart After the ice is out of the evaporator the evaporator and the evaporator thermistor probe warm up rapidly When the evaporator probe senses a temperature between 40 45 F its resistance change signals the card and the actuator control sets warm orange L E D OFF dimly lit and completes the circuit from the defrost circuit to the re
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87. ming water is cold and the compressor can cool the water below 40 during the Cycle the cold water thermostat will switch to the cool side connecting the pink and blue circuits giving power to the defrost valve allowing hot gas from the compressor to go through the evaporator warming up the circulating water EEC2a Water fill control circulating water warms up to 50 to 55 F If the water warms up to 50 F before the water fill is complete and water touches the top thermistor water level probe the cold water control will switch to the warm side shutting the defrost valve and the compressor will start to cool the water again A red L E D is mounted on the printed circuit card below the cold water control potentiometer as a service aid It is on bright when the cold water control is in the cold position Kold Draft Service amp Parts Manual 14B Electrical Circuits PUMP amp DEFROST SNAP ACTION TOGGLE SWITCH 50 TOGGLE CONTROL DOWN COLD WATER R BG CONTROL BL BL COOL WARM TOGGLE UP ACTUATOR z B BL CONTROL 2 R P 2 COND WARM FAN END DEF UNIT STOP STOP WA UP STOP PU LINE DOWN STOP BL CW 1 5 MFD 2001 WATER DEFROS
88. nap up Adjust switch differential Actuator thermostat out of Adjust slightly counter adjustment clockwise Defective actuator toggle Replace switch switch Power supply has failed Restore power Cubes do not harvest in a slab Fin too thin Adjust waterplate hinges to Some cubes hang up in the evaporator and become distorted 1 32 fin thickness Deformed evaporator cells Straighten cells with smooth jaw pliers Slab does not break up into individual cubes Fin too thick Adjust hinges up or evaporator down Leave 1 32 space between the waterplate and evaporator Kold Draft Service amp Parts Manual 30B Trouble Cause Remedy TROUBLE CAUSE SYMPTOM REMEDY Unusually long cycles Voltage below required potential at the cuber Check power source for full voltage Run minimum 12 GA wire directly to the cuber to prevent line loss Dirty condenser Clean condenser Hot leaks between condensing unit and freezing compartment All skin panels must be tightly sealed Expansion valve too far open Close TXV 1 8 turn increments so that there is no frost back to the compressor and pressures are according to the Chart of Water Levels Expansion valve too closed with large holes in right side cubes Open TXV 1 8 turn increments Recheck to see that t
89. ot Circuit not complete Check wiring the condenser fan Fan motor defective Replace motor Condenser fan operating but Dirty condenser coil Clean coil the condensing unit is operating intermittently during the freeze cycle Determine if the unit returns to normal operation at the end of the defrost cycle Low Voltage Correct to proper voltage not less than 5 below that stated on nameplate Refrigerant overcharge Reduce the charge Fuse blown one leg of 3 wire electronic system Replace fuse Kold Draft Service amp Parts Manual 26B Trouble Cause 8 Remedy TROUBLE CAUSE SYMPTOM REMEDY Compressor cuts out Defective run capacitor Run capacitor should draw 1 to 3 amps 282 GB4 4 amps Open high or low pressure cutout Check refrigeration system pressure Water plate opens and closes constantly Water plate closes all the way when cams are up but defrost valve stays open and pump does not run Maladjusted pump amp defrost switch Adjust lift bolt on water plate to push switch lever up closing the hot gas valve and starting the pump when the water plate is up Adjust the lift rod collar to push the pump switch up closing the hot gas valve and starting the pump when the waterplate is up Water plate does not close all the way Remove obstruction Adjust hinge for proper water plate gap Confirm that water pla
90. pen position the actuator toggle arm will again reverse the actuator toggle switch and the actuator motor and cause the plate to close This will continue until the water plate is clear and the lift plate can push up the defrost switch breaking the circuit through this switch to the stop side of the actuator toggle switch so that the motor will stop with the cams up when the actuator toggle arm pushes the actuator toggle to the stop position The ice maker has now completed its full cycle and started another freezing cycle This will be regularly repeated until the bin is full and the bin control shuts off the ice maker automatically When some ice is removed from the bin the ice maker will start up and refill the bin Kold Draft Service amp Parts Manual 12 Electrical 5 schematic wiring diagrams provided on these pages show flow of electric current at several steps in the operation of the ice maker The dark lines show current flow on all wiring diagrams Following the diagrams is a description of the operation specifically related to the circuits that are used at each step These circuits apply to all electronic and electromechanical ice makers built since 1964 and to those ice makers in the field which have been revised to the 1964 wiring refer to Thermostatically controlled ice makers refer to Electronically controlled ice makers PUMP amp DEFROST SNAP ACTI
91. re start when released The water plate will open and dump the cleaner then close immediately and the water system will refill Repeat this dumping and refilling three 3 times to rinse out all of the cleaning solution a sanitizing solution of two 2 oz 5 1 4 sodium hypochlorite household bleach or equivalent and one 1 quart clean water As in step 4 pour about half of the sanitizing solution into the water level control tank or tube and the remaining sanitizer into the control stream box Allow the sanitizing solution to circulate LEAST 15 MINUTES then dump rinse two 2 times as described above If necessary reset the water level probes to the proper levels 10 While the cleaning and sanitizing solutions are circulating clean rinse and sanitize all accessible parts of the ice making compartment of the cuber with clean cloths Use a cleaning solution of 8 tablespoons 1 2 cup baking soda per gallon of warm water and a sanitizing solution of no less than 1 teaspoonful 5 5 1 4 sodium hypochlorite per quart of clean water 11 After cleaning has been completed trip the WASH switch to and check to be sure that the cuber is operating properly particularly the water level probes Then re assemble and secure all cabinet enclosure panels Kold Draft Service amp Parts Manual 47B Preventative Maintenance Ice Bin Cleaning Instructions The bin should be cleaned per
92. rost will not occur as long as the inlet pressure in the upper evaporator is equal to or greater than the inlet pressure in the lower evaporator Kold Draft Service amp Parts Manual 35B Service and Troubleshooting GB1204 GB1205 The GB1200 series cubers are derived from the GB903 GB1003 series ice makers and therefore share the same synchronization circuits water pump control wiring and refrigeration circuit The compressor used in GB1205 series is 208 230 volt 60 hz 3 phase The GB1204 series uses a 208 230 volt 60 hz 1 phase and therefore uses a line contactor for compressor operation The following diagram illustrates the contactor circuit and also shows the transformer connection to provide single phase 115 volt power for the water pumps and solenoid valves BR BR COMPRESSOR 23 HI PRESS 0 5 WASH CONTACTOR 208 OR 230 V CUT OUT CUT OUT SWITCH 3 1 B sho GB1205 5 PHASE ONLY Although the refrigeration circuit is identical to the GB4 GB903 GB1003 the compressors in the GB1200 series use R 502 refrigerant along with R 502 expansion valves Kold Draft Service amp Parts Manual 36B Service and Troubleshooting Actuator Motor Electrical Tests The following tests are for troubleshooting the actuator motor and related circuits
93. rs but the pumps will continue to operate if the fuse opens as the pumps are actually connnected in Series across the line taps of the transformer To allow the water pumps to operate independently a D P D T pump amp defrost toggle switch is used in the lower channel The left contacts power the pump when the water plate is closed and the right contacts permit caught cube false harvesting through the red circuit The transformer box contains high and low pressure cut outs as do all 1 H P and larger Kold Draft cubers and also a high and low cut out relay RELAY HI LO PRESS BL BR Ly NOTE FOR SIMPLICITY START COMPONENTS ARE NOT SHOWN 115 77 71 Lo PRESS CUT OUT CUT OUT BG The above diagram illustrates the cut out circuitry and shows that compressor current is controlled by a heavy duty relay rather than the cut out contacts which are not heavy enough to reliably handle the amperage required of the GB4 compressor The high and low pressure cut outs supply voltage only to the coil of the control relay which will open if either of the cut outs open due to excessively high or low refrigerant pressure Kold Draft Service amp Parts Manual 34B Service and Troubleshooting The ice maker contains two evaporators and therefore two expansion valves but only only one hot gas defrost valve
94. rts going over the dam Kold Draft Service amp Parts Manual 29B Trouble Cause Remedy TROUBLE CAUSE SYMPTOM REMEDY Holes in cubes all of the time Control stream does not go over the dam at the end of the freeze cycle Continued from previous page Leak in water system Water dripping steadily off the circulation tank indicates a leak which should be located and repaired Make sure all lateral plugs are in place Holes in all cubes Control stream does go over the dam Control stream too high allowing water to splash over the dam during the freeze cycle Lower control stream Turn adjusting screw clockwise Cuber will not harvest Water plate will not come down Control stream obstructed Loosen adjusting screw to flush out foreign matter Actuator motor problem Check motor and circuit Warm air infiltration from compressor compartment room A Secure all skin panels B Skin gaskets must seal C All panels must seal to prevent air from the compressor compartment getting into the ice making compartment Check top cover over the partition especially Orange L E D does Check evaporator probe come on resistance Orange L E D does not Test card come on but probe is good Inoperative lower probe Check water level probe connections Test probe resistance Test PC card Control tank will not s
95. te brackets are tight against cams Ckeck springs Water plate opens before water probe assembly tube or weight control tank is full Spring missing or springs weak allowing water plate to lower slightly as water fills tank until the pump switch drops and the plate opens under power Replace springs Drift stop not adjusted Cams drift counter clockwise until the water plate lowers enough to drop the pump switch Remove drift stop from the front of the actuator motor Bend the spring for more tension on the motor shaft Slow water fill Improve water supply Clean strainer Orange and Red L E D s Adjust cold water control on bright on PC card PC card Test evaporator probe and PC card Actuator thermostat out of Adjust or replace actuator adjustment or defective thermostat Water plate will not completely close Obstruction between the evaporator and water plate Remove obstruction Check clearance between the water plate and evaporator Lift bolt for pump toggle on water plate is too high holding the water plate away from the cams Adjust lift bolt so the water plate comes up against the cams while the lift bolt holds the pump switch up Collar on lift rod too low holding the water plate away from the cams Adjust collar so the water plate comes up against the cams while the lift rod holds the pump switch up Kold Draft Service amp
96. upper actuator motor Synchronization occurs when the lower actuator motor stalls after raising to the 12 O clock position and waits for the upper actuator motor to catch up This diagram shows the synchronization circuit The dotted lines indicate anj interim sub circuit which was used from FORE 1 1 85 9 81 until 1 83 update 284 ee yODIFED ROTOR the yellow white in the upper channel mee OGGLE AFTER 1 1 83 tape the ends and install a modified rotor 27 kit GBR 03110 01 the upper actuator Y SLAVE motor Cubers made before 9 81 do not ACTUATOR have the yellow white wire the upper channel unless they been field ACTUATOR modified and only the modified rotor is required for updating lt Kold Draft Service amp Parts Manual 33B Service and Troubleshooting The ice maker use two water pumps and they are connected to the transformer independently to decrease the load on the 115 v tap Y MASTER 4 PUMP SWITCH FUSE TRANSFORMER 115 V SLAVE WATER Y Lo SLAVE PUMP SWITCH As can be seen from the above diagram the 4 amp fuse protects the transformer as it does in all GB series ice make
97. urning clockwise close the water plate EEC13 Same as EC13 If the obstruction remains EC12 and EC13 will repeat If the obstruction is removed such as the cube falling out EC13 will be followed by EC9 and EC10 and normal operation will resume Kold Draft Service amp Parts Manual 24B Functional 15 Without the use of special tools or testers these tests can quickly determine any major faults with the control module card probes or functional components small screwdriver is required to fit the slots on the potentiometers Before starting the test be sure that there is power to the ice maker and check the fuses in the control module box and the supplemental line fuses if installed WL TB2 BIN ACI 22 CW OOO WARM WARM WARM Open terminals simulate a Cold signal to the P C card Short terminals simulate Hot signal to the P C card C Turn the wash switch to Wash to prevent compressor short cycling during tests To 12 6 perform test induce following ORANGE RED ACT CW conditions 2 2805 u Ea D D screwdriver may be used to short the pins B E L Open Open Open Open Open stops Orange and Red L E D s ON bright Short Open Open Open Open Cuber runs
98. urrent to condensing unit water pump and water valve cycle starts EEC11 Circuit not shown Bin full Ice against bin probe after water fill cycle is completed opens bin control relay shutting off all parts of the ice maker When ice is removed bin control relay closes ice maker will start up and operate regardless of what part of the cycle it was in when it was shut off Kold Draft Service amp Parts Manual 22B Electrical 5 PUMP 4 DEFROST SNAP ACTION BG TOGGLE SWITCH BG TOGGLE BIN CONTROL aa ieee BL J GLOW COLD BG CONTROL R BL BL COOL WARM TOGGLE UP CONTROL 1 ELD R z 5 2 mz s COND UNIT FAN SWITCH Ww WATER mm UP PU MP LINE stop DEFROST VALVE ACTUATOR W W MOTOR W Abnormal of Water Plate EC12 Abnormal opening of water plate Sometimes a cube may stick to the water plate while it is closing EC8 and by stretching the springs prevents the water plate from closing enough to push the pump and defrost toggle switch up as it normally does EC9 The circuit through the pump and defrost toggle switch will remain complete to the defrost cir
99. utlet hoses from the pump 5 Separate the hinge brackets from the water plate a Cubers with plastic hinge brackets pry the brackets away from the plate b Cubers with metal brackets prior to 1977 remove the four lower screws and lock washers holding the water plate to the pump bracket and rear hinge Remove the nuts and lock washers holding the top of the water plate to the pump bracket and rear hinge 5 16 socket 6 Run the cam down to the nine o clock position by hand or with power Unhook the springs from the water plate Kold Draft Service amp Parts Manual 39B Service and Troubleshooting 7 Electronic cubers Remove the screws that mount the control module box Pull the module forward to disconnect the front cam Rotate the module up for clearance Electro mechanical cubers Remove the cotter pin from the pump toggle switch and remove the lift rod and collar assembly 8 Slide the water plate and tank to the right without turning and slide it forward out of the machine Water Plate Assembly to Water Tank 1 Remove the spring bosses water plate brace water deflector teflon brackets and the four screws holding the water tank to the water plate Electronic cubers Remove the pump and defrost actuation plastic bolt from the water plate and assemble it to the new plate 2 Attach the water tank to the water plate with four screws Assemble the teflon brackets water deflector water plate brace
100. versing side of the actuator toggle switch and actuator motor NOTE The actuator control does not start the defrost cycle it only ends it after the ice falls out The motor revolves clockwise raising the water plate When the water plate is almost closed the lift bolt on the water plate pushes up the pump and defrost switch lever starting the pump and breaking one circuit to the hot gas valve The water plate continues to the full UP position when the actuator toggle arm will snap the actuator toggle to the left causing the actuator motor to stop When the evaporator temperature reaches 50 F the cold water control will switch to the warm side shutting off the hot gas valve red L E D OFF dimly lit When the water level is high enough to touch the upper thermistor probe it breaks the circuit to the water plate NOTE Should some ice cubes be left on the water plate keeping it partially open when the water plate comes up the actuator motor will continue to operate and the springs will stretch to allow the cams to take their vertical position and snap the actuator toggle switch Since the lift plate cannot push up the defrost switch the circuit is complete through this switch to the stop side of the actuator toggle switch When the actuator toggle arm snaps the actuator toggle switch to the stop the actuator motor will immediately reverse itself and open the plate allowing the captive ice to fall off When the plate is in the o
101. ype Circuit Breaker size is dependent on the size of the conductors supplying the Ice Maker They must be no less than the minimum ampacity rating and no more than Maximum rating on the nameplate Supplement fuses installed on the Ice Maker do NOT provide primary protection and may be sized as required for continuous operation without nuisance blowing up to the indicated nameplate Maximum rating to compensate for ambient conditions SPECIAL NOTE Wire sizes on this chart are good up to 80 feet Anything 80 feet to 150 feet increase wire 1 size Any runs 150 feet to 250 feet increase the wire 2 sizes Kold Draft Service amp Parts Manual 4B Installation Specifications Water Levels Pressures Cycles and Charges higher than average temperatures increase pressures and cycle times Model Cube Size Full Water Level Distance below top of tank Suction Pressure after Defrost Suction Pressure before Defrost Defrost Pressure Cycle Times approximate Refrigerant Charge Remotes R see note below Refrigerant Type Approximate 16 of ice batch Compressor Size Model Cube Size Full Water Level Distance below top of tank Suction Pressure after Defrost Suction Pressure before Defrost Defrost Pressure Cycle Times approximate Refrigerant Charge Remotes R see note below Refrigerant Type Approximate 16 of ice per batch Compressor Size GB1200 C HK K 2 5 8

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