Hoshizaki FM-300AFE-HC, Service Manual

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63
2. LOW ICE PRODUCTION
PROBLEM POSSIBLE CAUSE REMEDY
1. Gas leaks. 1. See 1 - [5] - a).
2. Refrigerant line
clogged.
2. Replace the clogged
component.
a) Refrigerant Line
3. Overcharged. 3. Recharge.
1. Dirty Air Filter or
Condenser.
1. Clean.
2. Ambient or condenser
water temperature
too warm.
2. Check for recommended
temperature.
3. Condenser water
pressure too low or
off.
3. Check and get recommended
pressure.
4. Fan rotating too slow. 4. See 3 - [1] - a).
b) High-side
Pressure Too
High
5. Water Regulating
Valve clogged.
5. Clean.
c) Expansion Valve
(not adjustable)
1. Low-side pressure
exceeding the limit.
1. Replace.
[1] Low ice
production.
d) Evaporator 1. Evaporator pipe
crushed.
1. Replace.
3. OTHERS
PROBLEM POSSIBLE CAUSE REMEDY
1. Bearing worn out. 1. Replace.
2. Fan blade deformed. 2. Replace fan blade.
a) Fan Motor
(Condenser Unit)
3. Fan blade does not
move freely.
3. Replace.
1. Bearings worn out, or
cylinder valve broken.
1. Replace. b) Compressor
2. Mounting pad out of
position.
2. Reinstall.
c) Refrigerant Lines 1. Rub or touch lines or
other surfaces.
1. Replace.
d) Gear Motor (Ice
Making)
1. Bearing or Gear
wear/damage.
1. Replace.
1. Low-side pressure too
low.
1. See if Expansion Valve Bulb is
mounted properly, and
replace the valve if necessary.
e) Evaporator
2. Scale on inside wall of
Freezing Cylinder.
2. Remove Auger. Use a solution
of lime removing cleaner to
clean periodically. If water is
found to surpass the following
levels, install a conditioner.
Hardness 50 ppm
Silica 30 ppm
f) Heater 1. Broken. 1. Replace.
[1] Abnormal noise
g) CPR (Condenser
Unit)
1. Internal leaks. 1. Replace.