Hoshizaki KM-630MAF, KM-630MWF, KM-630MRF service manual Abnormal ICE, Others

4. ABNORMAL ICE

PROBLEM	POSSIBLE CAUSE			REMEDY
[1] Small Cube	a) Ice Cube Guide	1.	Out of position.	1. Place in position.
			Circulated water falls into
			bin.
	b) See chart 1 - [5], and check water supply line, Water			Solenoid Valve, water system,
	Pump Motor or Controller Board.
	c) Drain Valve	1.	Dirty.	1. Clean.
[2] Cloudy or	a) See chart 2 - [1] and - [3], and check Float Switch, Water Solenoid Valve,
irregular cube	Controller Board, Spray Tubes, water system, refrigerant charge or Expansion
	Valve.
	b) Spray Guide	1.	Dirty.	1. Clean.
	c) Water Quality	1.	High hardness or contains	1. Install a water filter or
			impurities.	softener.

5. OTHERS

PROBLEM	POSSIBLE CAUSE				REMEDY
[1] Icemaker will	a) Bin Control	1.	Set too cold.	1.	Adjust warmer.
not stop when	Thermostat	2. Defective.		2. Replace.
bin is filled
with ice.
[2] Abnormal	a) Pump Motor	1.	Bearings worn out.	1. Replace.
noise	b) Fan Motor	1.	Bearings worn out.	1. Replace.
		2.	Fan blade deformed.	2.	Replace fan blade.
		3.	Fan blade does not move	3. Replace.
			freely.
	c) Compressor	1.	Bearings worn out, or	1. Replace.
			cylinder valve broken.
		2.	Mounting pad out of	2. Reinstall
			position.
	d) Refrigerant Lines	1.	Rub or touch lines or other	1.	Replace.
			surfaces.
[3] Ice in storage	a) Bin Drain	1. Plugged.		1.	Clean.
bin often
melts.

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