Manitowoc QF0400 Service Manual

Also see for QC0700: Installation, use & care manual Service manual Building instructions Technician's handbook

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Manitowoc QF0400 Service Manual Manual pdf 65 page image

Section 6 Electrical SystemPart No. 80-1214-3 6-3Energized Parts ChartsQF2300When the toggle switch is placed in the ICE position, the following must occur prior to starting an ice making cycle.A.)The bin level probe must be open (Bin Level light off). If the probe is closed (Bin Level light on) when the toggle switch is moved to ICE, the controlsystem waits until the bin level probe opens (Bin Level light off) before starting an ice making sequence.If the bin level probe is disconnected from the control board, the ice machine will not start and will continuously flash the Bin Level light.The ice machine will remain off until:1.The bin level probe is reconnected to the circuit board2.The toggle switch is moved from ICE to OFF, then back to ICE.B. The water level probe must be closed (Water Level light on) to start the compressor.If the water level probe is open (Water Level light off), the control system waits until the water level probe closes before starting the compressor.8-Minute Lockout - The Bin Level light will flash until the 8-minute lockout expires.After the 8-minute lockout expires, the Bin Level light will de-energize.The 8-minute lockout time can be overridden by moving the ICE/OFF/CLEAN toggle switch from ICE to OFF, then back to ICE.Ice MakingSequence OfOperationControl Relays SensorsLengthOf Time1 2 3 4WaterLevelProbeBin LevelProbeGear MotorSpeedLiquid LineSolenoid/EqualizationValve/CompressorDump Valve GearMotorFloatValveCoilSTART-UP1A. WaterFlushOff On On OffNotSensing forWaterLevelSensing NoIce ContactSensing forGear MotorSpeed45 Seconds1B. Water Fill Off Off On OnSensing forWaterLevelSensing NoIce ContactSensing forGear MotorSpeedUntil WaterContactsWater LevelProbeFREEZESEQUENCE2. FreezeOn Off On OnSensing forWaterLevelSensing NoIce ContactSensing forGear MotorSpeedUntil IceContacts BinLevel Probefor 3ContinuousMinutesAUTOMATICSHUT-OFF3A. Ice RunOutOff Off On OnNotSensing forWaterLevelSensingIce ContactSensing forGear MotorSpeed4 Minutes3B. DrainEvaporator Off On(90 Seconds) Off OffNotSensing forWaterLevelSensingIce ContactNotSensing forGear MotorSpeed90 SecondsAUTOMATICSHUT-OFF Off Off Off OffNotSensing forWaterLevelSensingIce ContactNotSensing forGear MotorSpeedUntil Ice NoLongerContacts BinLevel ProbeRevised 8/2003Downloaded from www.Manualslib.com manuals search engine