Hoshizaki F-450MAH User Manual download pdf (Page 34)

3. Other

PROBLEM POSSIBLE CAUSE REMEDY

[1] Abnormal noise a) Fan Motor 1. Bearing worn out. 1. Replace.

2. Fan blade deformed. 2. Replace fan blade.

3. Fan blade does not

move freely.

3. Replace.

b) Compressor 1. Bearings worn out,

or cylinder valve

broken.

1. Replace.

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

worn out / damaged.

1. Replace.

e) Evaporator 1. Low-side pressure

too low.

1. See if Expansion

Valve Bulb is mounted

properly, and replace

the valve if necessary.

2. Scale on inside wall

of Freezing Cylinder.

2. Remove Auger. Use

"SCALE AWAY" or

"LIME-A-WAY"

solution to clean

periodically. If the

water is found hard by

testing, install a

softener.

[2] Overflow from

Reservoir (Water

does not stop.)

a) Water Supply 1. Water pressure too

high.

1. Install a pressure

Reducing Valve

b) Control Water Valve 1. Diaphragm does not

close.

1. Clean or replace.

c) Float Switch 1. Bad contacts. 1. Check for continuity

and replace.

[3] Gear Motor Fuse

blows or circuit

breaker trips

frequently

a) Power Supply

Voltage

1. Too high or too low. 1. Connect the unit to a

power supply of

proper voltage.

b) Evaporator Assy 1. Bearings or Auger

worn out.

1. Replace Bearing or

Auger.

c) Bin Control 1. Bad contacts. 1. Check for continuity

and replace.

2. Activator does not

move freely.

2. Clean Axle and its

corresponding holes

or replace Bin Control.

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Hoshizaki F-450MAH User Manual Page 34

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