Hoshizaki RELIABILITY IS A BEAUTIFUL THING DCM-270BAH-OS - Manual (Page 22)

22
2. Low Ice Production
PROBLEM POSSIBLE CAUSE REMEDY
[1] Abnormal refrigeration
circuit.
a) Condenser 1. Dirty air filter or
condenser.
1. Clean.
2. Bad ventilation. 2. Remove anything blocking
vents.
b) Thermostatic Expansion
Valve
1. Low-side pressure or
temperature exceeding
the limit.
1. Secure bulb to low-side line
or replace.
c) Refrigerant Lines 1. Gas leaks. 1. Check for leaks with a leak
detector. Reweld leak,
replace drier and charge
with refrigerant. The amount
of refrigerant is marked on
the nameplate.
2. Overcharged. 2. Recharge.
d) Compressor Motor
Protector
1. Overload protector
stops compressor
intermittently.
1. Check condenser and fan
motor.
e) Inside Wall of Evaporator 1. Scale on inside wall of
freezing cylinder.
1. Remove auger, use
Hoshizaki "Scale Away" or
"LIME-A-WAY" solution to
clean periodically.
If water is found to exceed
the following levels, install a
conditioner:
Hardness 50 ppm
Silica 30 ppm
[2] a) Condenser 1. Dirty air filter or
condenser.
1. Clean.
2. Bad ventilation. 2. Remove anything blocking
vents.
3. Ambient temperature
too high.
3. Check ventilation and
location, and change as
needed.
4. Less than 6" clearance
at rear, sides and top.
4. Allow proper clearance for
ventilation.
b) Fan Motor 1. Fan revolving too
slowly.
1. See chart 1,[5], a)
[3] Poor water flow. a) Water Supply 1. Water pressure too low. 1. See chart 1,[6], a)
Condensing
temperature too high.