ICE MACHINES Q-Model Service Manual

Electrical System Section 6Harvest Sequence5. WATER PURGEThe water pump continues to run,and the water dump valve energizesfor 45 seconds to purge the water inthe sump trough. The water fill valveenergizes (turns on) and deenergizes(turns off) strictly by time.The water fill valve energizes for thelast 15 seconds of the 45-secondwater purge. The water purge mustbe at the factory setting of 45seconds for the fill valve to energizeduring the last 15 seconds of theWater Purge. If set at less than 45seconds the water fill valve does notenergize during the water purge.NOTE: After the 45 second waterpurge, the water fill valve, waterpump and dump valve de-energize.(Refer to “Water Purge Adjustment”on Page 3-3 for details.) The harvestvalve and HPR solenoid also open atthe beginning of the water purge todivert hot refrigerant gas into theevaporator.TB35TB35L1HIGH PRESCUTOUTICE THICKNESS PROBEWATER LEVEL PROBENOT USED(42)CONTACTORCONTACTSL1TB32TB33(64)(66)(51)(52)(55)(63)BIN SWITCH (65)*OVERLOAD(48)(F1)(62)R24135TRANS.1CC(66)TERMINATES ATPIN CONNECTIONFUSE (7A)1F1G LOW D.C.VOLTAGEPLUG(67)S(53)(20)(68) ICE(69)OFF(62) CLEAN(49)COMPRESSOR(47)TB34(61)(60)(77)HARVEST (80)SOLENOID(76)(75)DUMP(81)(57)SOLENOIDTB31 (98) (99)WATERPUMP(58)TB37 (59) (83)(82)LIQUID LINESOLENOID(73)(74)CONTACTOR(56) COILCLEAN LIGHTWATER LEVELBIN SWITCH LIGHTHARVEST LIGHT/SAFETY LIMIT CODE LIGHTTOGGLE SWITCH VIEW FOR WIRING68INTERNAL WORKINGVIEW66676269RUN CAPACITOR(46)PTCRSEE SERIAL PLATE FOR VOLTAGER(45)(21)HPRSOLENOIDR(78)(22)WATERVALVE(50)(79)(F2)L2 (N)TB30TB30TB30TB30TB30TB30REMOTEFAN MOTORREMOTE CONDENSERRUN CAPACITORSV1648-5Table 6-12. Remote ModelsFigure 6-12. Remote — Water Purge5. Water Purge (45 Seconds)Toggle SwitchICEBin SwitchClosedControl Board Relays#1 Water Pump Closed / ON#2 Water Fill Valve Cycles / OFF then ON#3 Harvest Solenoid Closed / ONHarvest Pressure Regulating (HPR) SolenoidClosed / ON#4 Water Dump Valve Closed / ON#5 Contactor Coil Closed / ONLiquid Line SolenoidEnergizedCompressorONCondenser Fan MotorONSafety Controls (Which could stop ice machine operation)High Pressure Cut-OutClosedMain Fuse (On Control Board)Closed6-14 Part No. 80-1100-3