Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 User Manual download pdf (Page 36)

3. Rail Cooling

Problem Possible Cause Remedy

[1] Rail temperature too

high.

a) Warm Food 1. Warm food recently

placed in rail area.

1. Pre-cool food or allow time

for unit to return to setpoint

temperature.

b) Rail Pans/Dividers 1. Missing, not in place. 1. Replace. Pans must cover

entire rail for proper cooling.

c) Outside Heat Source 1. Too close to unit. 1. Separate unit from heat

source.

d) Rail Switch 1. "OFF"position. 1. Moveto"NORMAL"or

"LOW"position.

2. Bad contacts. 2. Check for continuity and

replace.

e) Rail Thermistor 1. Defective. 1. See"II.E.Thermistor

Check."

f) Setpoint and/or

Temperature

Correction Factor

1. Incorrect. 1. Correct setting(s).

See"II.D.4.c)Temperature

Setpoint"or

"II.D.4.f)Temperature

CorrectionFactor"for

defaults.

g) Air Filter or Condenser 1. Clogged, dirty. 1. Clean.

h) Rail Liquid Line Valve 1. Does not open. 1. Check and replace.

i) Service Valve(s) 1. Partially or completely

closed.

1. Conrm service valve is

open.

j) Refrigerant 1. Leak. 1. Recover, repair leak,

replace drier, evacuate, and

recharge.

k) Expansion Valve 1. Operating erratically. 1. Check and replace.

l) Compressor 1. Defective. 1. See"1.[3]Compressorwill

notstartorstopsoperating."

m)Control Board 1. Defective. 1. Replace.

[2] Rail temperature too

low.

a) Setpoint and/or

Temperature

Correction Factor

1. Incorrect. 1. Correct setting(s).

See"II.D.4.c)Temperature

Setpoint"or

"II.D.4.f)Temperature

CorrectionFactor"for

defaults.

b) Frozen Food 1. Frozen food recently

placed in refrigerator.

1. Allow time for unit to return

to setpoint temperature.

c) Rail Thermistor 1. Defective. 1. Check and replace.

d) Rail Liquid Line Valve 1. Does not close. 1. Check and replace.

e) Rail Fan Motor 1. Defective. 1. Check and replace.

f) Control Board 1. Defective. 1. Replace.

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Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 User Manual Page 36

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