Hoshizaki DCM-500BWH-OS, DCM-500BAH-OS service manual Low Ice Production

Problem	Possible Cause			Remedy
[5] All components	d) Evaporator	1.	Defective.	1.	Replace.
run, but no ice is
	e) Water Supply Line	1.	Condenser water	1.	Check and get
produced. (continued)
	(water-cooled model		pressure too low or		recommended pressure.
	only)		off and high pressure
			control opens and
			closes frequently.
	f) Water Regulating Valve	1.	Water regulating	1.	Clean, adjust, or replace.
	(water-cooled model		valve set too high or
	only)		clogged (water-cooled
			model only).

2. Low Ice Production

Problem	Possible Cause			Remedy
[1] Low ice production.	a)Evaporator	1.	Dirty or defective.	1.	Clean or replace.
	b)Bin Control	1.	Erratic, sticking,	1.	Clean or replace.
			defective.
	c) Drain Valve	1.	Leaking water.	1.	Clean or replace.
	d)Expansion Valve	1.	Bulb loose.	1.	Secure bulb.
		2. Operating erratically.		2. Check and replace.
	e)Refrigerant Charge	1.	Low charge.	1.	See "V.B. Service for
					Refrigerant Lines."
		2. Overcharge.		2. See "V.B. Service for
					Refrigerant Lines."
	f) Refrigerant Line	1.	Refrigerant line or	1.	Repair/replace the
			component restricted.		clogged line/component
					and replace the drier.
	g)High-Side Pressure	1.	Dirty air filter or	1.	Clean.
	Too High		condenser.
		2. Ambient (or		2. Reduce temperature.
			condenser) water
			temperature too warm.
		3. Fan motor slow rpm.		3. See "3. [2] a) Fan Motor."
		4. Fan motor capacitor.		4. Check and replace.
		5. Condenser water		5. Check and get
			pressure too low or off		recommended pressure.
			(water-cooled model
			only).
		6. Water regulating		6. Clean, adjust, or replace.
			valve set too high or
			clogged (water-cooled
			model only).
	h)Compressor	1.	Inefficient compressor.	1.	Replace
		2. Faulty thermal		2. Replace compressor.
			protector (overload).
		3. Faulty capacitor/		3. Replace.
			starter.

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