Hoshizaki F-2000MLH Service Manual page 53

PROBLEM
[4] Gear Motor starts,
but Compressor (for
Solenoid Valves) will
not start (open) or
operates (opens)
intermittently
POSSIBLE CAUSE
c) Gear Motor Protector
(Circuit Breaker)
d) Gear Motor Relay
e) Control Timer
(Printed Circuit Board)
f) Gear Motor Protect
Relay
a) Pressure Switch
[Except
F-2000MLH/-C]
b) X2 Relay on Control
Timer
c) Starter [Except three
phase model and
F-2000MLH/-C]
d) Start Capacitor or Run
Capacitor [Except
three phase model and
F-2000MLH/-C]
1. Tripped.
1. Coil winding opened.
2. Bad contacts.
1. Broken.
1. Coil winding opened.
2. Bad contacts.
1. Dirty Air Filter or
Condenser.
2. Ambient or condenser
water temperature too
warm.
3. Condenser water
pressure too low or
off. (Water-cooled
model only)
4. Water Regulating
Valve set too high.
(Water-cooled model
only)
5. Fan not rotating.
6. Refrigerant
overcharged.
7. Refrigerant line or
components plugged.
8. Bad contacts.
9. Loose connections.
1. Bad contacts.
2. Coil winding opened.
1. Bad contacts.
2. Coil winding opened.
3. Loose Connections.
1. Defective.
53
REMEDY
1. Find out the cause, get rid
of it, and press Reset
Button on Circuit Breaker.
1. Replace.
2. Check for continuity and
replace.
1. Replace.
1. Replace.
2. Check for continuity and
replace.
1. Clean.
2. Get cooler.
3. Check and get
recommended pressure.
4. Adjust it lower.
5. See "3. [1] a) Fan Motor."
6. Recharge.
7. Clean and replace drier.
8. Check for continuity and
replace.
9. Tighten.
1. Replace. Check for
continuity and replace.
2. Replace Timer.
1. Check for continuity and
replace.
2. Replace.
3. Tighten.
1. Replace.