Refrigeration Systems; Refrigeration System Diagnosis Guide - U-Line U-1075WCS-00 Service Manual

Refrigeration System Diagnosis Guide

System Suction
Condition Pressure
Normal Normal
Higher than
Overcharge
normal
Lower than
Undercharge
normal
Somewhat lower
Partial
than normal -
Restriction
in vacuum
Complete
In deep vacuum
Restriction
No Gas 0 PSIG to 25"
Suction Compressor
Line Discharge
Slightly below
room Very hot
temperature
Very cold - Slightly warm to
may frost heavily hot
Warm -
near room Hot
temperature
Warm -
near room Very hot
temperature
Room Room
temperature temperature
(cool) (cool)
Room
temperature Cool to hot
(cool)
U-Line Service
Condenser Capillary
Tube
Very hot Warm
Hot to warm Cool
Warm Warm
Top passes warm -
lower passes cool Room
(near room temperature
temperature due (cool) or colder
to liquid
Room Room
temperature temperature
(cool) (cool)
Room Room
temperature temperature
(cool) (cool)
Troubleshooting
Evaporator Wattage
Cold Normal
Higher than
Cold
normal
Extremely cold
near inlet - outlet Lower than
below room normal
temperature
Extremely cold
near inlet -outlet
Lower than
below room
normal
temperature
backing up
Lower than
No refrigeration
normal
Lower than
No refrigeration
normal
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