90
Symptoms
ڼ Low-press. is
low,
High-press. is
high
ڽ Bad blower
unit
Causes & Check
Poor refrigerant
Bubbles on sight glass
Suction pipe is not cool
So closed exp. V/A
Air filter is clogged. (Be frosted at frontal area
of cooler)
Outdoor air temp. is low.
No operation of Low-press S/W
Weak air flow and noise due to the loosed belt.
Gas leakage form temp. sensor body of expan-
sion valve.
Clogged dryer.
No power supply.
Injuried fan.
Serious vibration
Some gap between motor & fan.
Remedy & Repair
Repair thd gas leaking part.
Fullfil the gas to proper amount.
Open the V/A by adjust screw.
Clean the air filter
Check a Low-press. S/W, and replace if bad.
Adjust belt tension or replace belt
Replace a expansion valve.
After disassemble dryer, replace the desicant
and clean the strainer.
Check & repair fuse & related wiring diagram
Replace
Replace
Jointing the fixing nut and clip again.
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