Manitowoc Ice QF2300, QF0800, QC0700, QF0400 Section, Electrical System, Energized Parts Charts

Section 6 Electrical System

Energized Parts Charts

QF2300

		Control Relays				Sensors
	1	2	3	4
Ice Making
	Liquid Line				Water			Length
Sequence Of	Solenoid/			Float		Bin Level	Gear Motor
			Gear		Level			Of Time
Operation	Equalization	Dump Valve		Valve		Probe	Speed
			Motor		Probe
	Valve/			Coil
	Compressor
START-UP					Not		Sensing for
					Sensing for	Sensing No
1A. Water	Off	On	On	Off			Gear Motor	45 Seconds
					Water	Ice Contact
Flush							Speed
					Level
					Sensing for		Sensing for	Until Water
						Sensing No		Contacts
1B. Water Fill	Off	Off	On	On	Water		Gear Motor
						Ice Contact		Water Level
					Level		Speed
								Probe
								Until Ice
FREEZE					Sensing for		Sensing for	Contacts Bin
						Sensing No		Level Probe
SEQUENCE	On	Off	On	On	Water		Gear Motor
						Ice Contact		for 3
2. Freeze					Level		Speed
								Continuous
								Minutes
AUTOMATIC					Not		Sensing for
SHUT-OFF					Sensing for	Sensing
	Off	Off	On	On			Gear Motor	4 Minutes
3A. Ice Run					Water	Ice Contact
							Speed
Out					Level
					Not		Not
3B. Drain	Off	On	Off	Off	Sensing for	Sensing	Sensing for	90 Seconds
Evaporator		(90 Seconds)			Water	Ice Contact	Gear Motor
					Level		Speed
					Not		Not	Until Ice No
AUTOMATIC	Off	Off	Off	Off	Sensing for	Sensing	Sensing for	Longer
SHUT-OFF					Water	Ice Contact	Gear Motor	Contacts Bin
					Level		Speed	Level Probe

When 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 control system 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 board

2.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.

Part No. 80-1214-3 Revised 8/2003 6-3