Hoshizaki service manual DKM-500BAH Sequence Flow Chart and Component Operation, Cycle

DKM-500BAH 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
				• Maximum freeze time: freeze timer setting
	Fill Cycle	• Maximum harvest time: 20 minutes		• Bin control can only shut down unit within		Cycle
		Thermistor in	1 to 3 minute timer
				first 5 minutes of freeze cycle
		control	in control
Initial startup always				5 minute timer	F/S in
				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	PM stops for 2 sec., SR
	F/S open	HGV energized	reaches 48°F (9°C)	HGV de-energized	operation turned	energizes, starting PM &
		WV continues	(3.9 kΩ or less)	WV de-energized	over to F/S	DV for 10/20 sec. each 1,
			Harvest timer starts	PM energized		2, 5, or 10 cycles.
				FMS energized		Comp continues
			F/S open			HGV energized
			If F/S is open, compressor stops and cycle returns to 1 minute fill			FMS de-energized

Legend:Comp–compressor; DV–drain valve; FMS–self-contained fan motor; F/S–float switch;

HGV–hot gas valve; PM–pump motor; SR–service relay; WV–inlet water valve