INDICATION
CORRECTION
3. Compressor is
excessively
noisy.
High pressure
valve is shut off.
High pressure
gauge reading
excessively high,
and compressor
knocks noticeably.
OPEN VALVE IM-
MEDIATELY.
Insufficient
compressor
lubricating oil.
Compressor
crankcase becomes
excessively hot
and noisy.
Check system for oil
leaks. Correct leak or
replace defective part.
Refill with special
compressor oil .
Loose o r worn
parts in
compressor.
Noisy
Replace
High pressure
gauge will show
excessively high
readings.
4.There is no air
circulation at
blower outlet, or
blower operation
is intermittent.
Blower motors have
shorted
or open
field
or armature
windings, electrical
connections are
loose or
disconnected,
electrical wiring is
shorted or open or
panel switches are
inoperative. Burned
out fuse.
Blower motors
operate
intermittently or
will not operate at
all .
Check refrigeration
electrical system, re-
pair or replace
defective parts,
replace fuse.
CONDITION
POSSIBLE
CAUSE
High charge of
refrigerant.
Release pressure
through Pressure
Test Gauge
Manifold until
pressure becomes
normal.
NOTES
