Instruction manual
51
6.3 Trouble shooting
Symptom
Possible cause
Corrective action
Compressor loaded
automatically to full capacity
after starting
Loading solenoid valve stuck in loaded position.
Remove and check loading solenoid valve.
Replace valve if necessary.
Air intake throttle valve in open position.
Check position throttle valve.
Disconnect loading solenoid valve from throttle
valve housing and connect independent
compressed-air line to throttle valve housing.
Repeatedly admit air and listen for opening and
closing sound of throttle valve. If sound is not
evident, remove unloader valve assembly,
dismantle and inspect.
Replace parts where necessary.
Compressor does not deliver
air or not immediatly after
loading solenoid valve has
been energized.
Diaphragm of unloader piston cracked
.
If air blows from venting device, open unloader
piston cover and replace diaphragm.
Air intake throttle valve stuck in closed position.
Disconnect loading solenoid valve from throttle
valve housing and connect independent
compressed-air line to throttle valve housing.
Repeatedly admit air and listen for opening and
closing sound of throttle valve. If sound is not
evident, remove unloader valve assembly,
dismantle and inspect. Replace parts where
necessary.
Air leaks in regulating system.
Same action as above.
Loading solenoid valve out of order.
Check loading solenoid valve and electric wiring.
Replace valve, if necessary.
Compressor capacity or
pressure below normal
Air consumption exceeds capacity of compressor.
Check equipment connected
.
Choked air filter element.
Remove and inspect air filter element. Clean or
replace element, if necessary.
Working pressure setpoint incorrect.
Adjust setting.
Engine not up to max. load speed.
Check engine and correct if necessary.
Electric blow-off valve malfunctioning.
Check interstage pressure. Check functioning of
loading solenoid valve. Replace diaphragm of
blow-off valve if necessary.
Loading solenoid valve leakage.
With unit running at max. load speed, disconnect
pipe from loading solenoid valve. If air leaks,
remove and inspect loading solenoid valve.
Replace valve, if necessary.
Compressor element(s) not in order.
Check interstage pressure and have compressor
element(s) inspected by Atlas Copco.
Air intake throttle valve remains partially closed.
Disconnect loading solenoid valve from throttle
valve housing and connect independent
compressed-air line to throttle valve housing.
Repeatedly admit air and listen for opening and
closing sound of throttle valve. If sound is not
evident, remove unloader valve assembly,
dismantle and inspect. Replace parts where
necessary.
Содержание PTS 916 Cd
Страница 1: ...Instruction Manual for Portable Compressors PTS 916 Cd ...
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Страница 57: ...Preliminary 57 Circuit diagrams ...
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Страница 74: ...Printed in Belgium 07 2007 Preliminary www atlascopco com ...