Hoshizaki FD-1001MWH(-C) EN - Manual (Page 74)

74
2. Low Ice Production
Problem Possible Cause Remedy
[1] Low ice production. a)Evaporator 1. Dirty. 1. Clean. See "VI.A.
Cleaning and Sanitizing
Instructions."
b)Bin Control 1. Erratic, sticking,
defective.
1. See "IV.D. Bin Control
Check."
c) Losing Water 1. Drain valve leaking. 1. Clean or replace.
2. Mechanical seal
leaking.
2. Replace.
3. O-ring leaking. 3. Replace.
d)Expansion Valve (TXV)
(not adjustable)
1. Low-side pressure too
low.
1. Replace.
2. Low-side pressure too
high.
2. See if expansion valve
bulb is mounted properly,
and replace the valve if
necessary.
e)Refrigerant Line 1. Gas leaks. 1. Check for leaks with a leak
detector. Repair leaks.
Replace drier and charge
with refrigerant. See "V.A.
Service for Refrigerant
Lines."
2. Refrigerant lines or
components restricted
2. Remove the restriction or
component and replace
the drier.
3. Overcharged. 3. Recharge.
f) High-Side Pressure
Too High
1. Dirty air filter or
condenser.
1. Clean.
2. Ambient or condenser
water temperature too
warm.
2. Reduce temperature.
3. Fan motor slow rpm. 3. See "3.[2]a) Fan Motor".
4. Fan motor capacitor. 4. Check and Replace.
5. Condenser water
pressure too low or off
(water-cooled model).
5. Check and get
recommended pressure.
6. Water regulating
valve restricted
(water-cooled model).
6. Clean.
g)Compressor 1. Inefficient compressor. 1. Replace compressor.
2. Faulty thermal
protector (overload).
2. Replace compressor.
3. Faulty capacitor/
starter.
3. Replace components.