Hoshizaki KM-650MWH, KM-650MAH, KM-650MRH Cycle Steps Harvest Cycle Freeze Cycle One Minute

KM-650MAH, KM-650MWH, KM-650MRH Sequence Flow Chart and Component Operation

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Cycle Steps				2. Harvest Cycle		3. Freeze Cycle
	1. One Minute		• Maximum inlet water valve time: 6 minutes		• Minimum freeze time: 5 minutes		4. Pump-Out
		Fill Cycle	• Maximum harvest time: 20 minutes		• Maximum freeze time: freeze timer setting			Cycle

		Thermistor in	1 to 3 minute timer	5 minute timer	F/S in
Initial startup always		control	in control	in control	control
begins here		F/S closed		F/S closed
"E" board will have	F/S Check		F/S Check
5 second delay	WV Energized	Comp energized	Thermistor temp	Comp continues	Freeze cycle	Pump motor stops
	F/S open	HGV energized	reaches 48°F (9°C)	FMR continues	operation turned	for 2 sec. and then
		FMR energized	(3.9 kΩ or less)	HGV de-energized	over to F/S	reverses for 10/20 sec.
		WV continues	Harvest timer starts	WV de-energized		each 1, 2, 5, or 10 cycles.
				PM energized		Comp continues
			F/S open	FMS energized		FMR continues
			If F/S is open, compressor stops and cycle returns to 1 minute fill			HGV energized
						FMS de-energized

Legend:

Comp - compressor FMR - remote fan motor FMS - self-contained fan motor F/S - float switch

HGV - hot gas valve PM - pump motor WV - inlet water valve

Components Energized when the Control Switch is in the WASH Position

The WASH position on the control switch is used when cleaning and sanitizing the unit. When in the WASH position, power is supplied to the pump motor. With the cleaning valve closed, the cleaner and sanitizer flow over the outside of the evaporator plate assembly. With the cleaning valve open, the cleaner and sanitizer flow over both the outside and the inside of the evaporator plate assembly.

Note: Close the cleaning valve after cleaning and sanitizing are complete, otherwise the unit will not re-start when the control switch is placed in the ICE position.