Compressors
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COMPRESSOR TROUBLESHOOTING
GET ORIENTED...
To Bench Test
Compressor
Damaged
Suction and
or broken
threads are
Discharge
install related
Pressures.
Cracked
1. Grasp clutch hub and
or Broken
Rotate compressor
Mounting
by hand. At the same
Ears are
time plug discharge
install
port only with thumb
related
or palm of hand.
The compressor
should begin to build
discharge pressure
while rotating.
2. Plug suction port and
repeat the above
step to confirm
presence of
suction pressure.
Note: Absence of
suction and/or
discharge pressure.
Clutch
Specifications
12 Volt clutch
Melted or curling heat
sensitive labels are the
Amperage draw
result of bent reed valve
2.5 to 3 amps
or poor oil return to
Pull - in voltage
Frosted or
Deep belt wear patterns
compressor
6 - 7 VDC
discolored hub
on pulley indicate
Working voltage
assembly the
excessive belt tension
10.5 VDC
result of clutch
that can cause premature
slippage
failure of clutch bearing
Note: less than 10.5
volts supplied to clutch
coil during compressor
operation will result
in clutch slippage and
eventual failure.