Astro Pneumatic 29 Gallon Belt Driven Air Compressor 68127 - Manual (Page 20)

TROUBLESHOOTING
Problem Possible Cause Solution
Air leak from the valve of the pressure
switch
Check valve does not perform its
function correctly due to wear or dirt on
the seal
Condensate drainage cock open
Rilsan hose not inserted correctly in
pressure switch
Unscrew the hex-shaped head of the
check valve, clean the housing and the
special rubber disk (replace if worn).
Re-assembler and tighten carefully
Close the condensate drainage cock
Insert the Rilsan hose correctly inside
the pressure switch
Reduction of efficiency, frequent start­
up. Low pressure values
Excessively high consumption
Leaks from joints and/or pipes
Clogging of the suction filter
Slipping of the belt
Decrease the demand of compressed
air
Change gaskets
Clean/replace the suction filter
Check V-belt tension
The motor and/or the compressor
overheat irregularly
Insufficient ventilation
Closing of air ducts
Insufficient lubrication
Improve ambient conditions
Check and if necessary clean the air
filter
Top up or change oil
After an attempt to start the
compressor, it stops due to tripping of
the thermal cutout caused by forcing of
the motor
Start-up with head of the compressor
charged
Low temperature
Voltage too low
Incorrect or insufficient lubrication
Inefficient electrovalve
Release the compressor head by using
the pressure switch push button
Improve ambient conditions
Check that the mains voltage matches
that of the dataplate. Eliminate any
extensions
Check level, top up and if necessary
change the oil
Take compressor to the service center
During operation, the compressor
stops for no apparent reason
Tripping of the thermal cutout of the
motor
Electric fault
Check level oil
Operate on the lever of the pressure
switch returning this to the OFF
position.
Reset the thermal cutout and restart.
If the fault persists, take the
compressor to the service center
Take compressor to the service center
When operating, the compressor
vibrates and the motor emits an
irregular buzzing sound. If it stops, it
does not restart although the sound of
the motor is present
Faulty capacitor Have the capacitor replaced
Irregular presence of oil in the network Too much oil inside the unit
Wear on segments
Check oil level
Take compressor to the service center
Leaking of condensate from the vent
cock
Presence of dirt/grit inside the cock Clean the cock
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