Marine Q 1800 Ice Machine Service Manual - Manitowoc Ice

Initial Start-Up Or Start-Up AfterAutomatic Shut-Off (cont.)2. REFRIGERATION SYSTEMSTART-UPThe compressor starts after the 45-second water purge, and it remains onthroughout the Freeze and Harvestcycles.The water fill valve is energized at thesame time as the compressor. Itremains on until the water level sensorcloses for 3 continuous seconds.The hot gas valve(s) remains on forthe first 5 seconds of the initialcompressor start-up.TB35L1HIGH PRESCUTOUTTB32ICE THICKNESS PROBEWATER LEVEL PROBENOT USED(66)(55)(62)(63)(64) BIN SWITCH (65)24135TRANS.1C1F1GFUSE (7A)LOW D.C.VOLTAGEPLUG(67)(66)Electrical System(61)(60)(68) ICE(69)OFF(62) CLEAN(57)CLEAN LIGHTWATER LEVELBIN SWITCH LIGHTHARVEST LIGHT/SAFETY LIMIT CODE LIGHTTOGGLE SWITCHSEE SERIAL PLATE FOR VOLTAGETB31(58)TB37(59)(73)(56)INTERNAL WORKINGVIEW(21) (22)WATERVALVE(77)HOT GASSOLENOID(76)DUMPSOLENOID(98)TERMINATES ATPIN CONNECTIONCONTACTORCOILVIEW FOR WIRING686662(80)(81)WATERPUMP(99)(75)(74)6769L2 (N)TB30TB30TB30TB30(49)TB35(42)CONTACTORCONTACTSL1TB33(51)(52)*OVERLOAD(48)RC(85) (86)COMPRESSORS(53)(47)TB34RUN CAPACITORR R(46) (50)(45)PTCRTB30FAN CYCLE CONTROLRUN CAPACITOR**FAN MOTOR(AIR COOLED ONLY)TB30SV1646-2Self-Contained Models2. Refrigeration System Start-Up (5 Seconds)Toggle SwitchICEBin SwitchClosedControl Board Relays#1 Water Pump Open / OFF#2 Water Fill Valve Closed / ON#3 Hot Gas Solenoid Closed / ON#4 Water Dump Valve Open / OFF#5 Contactor Coil Closed / ONCompressorONSafety Controls (Which could stop ice machine operation)High Pressure Cut-OutClosedMain Fuse (On Control Board)Closed3