Atlas Copco LF 2 Instruction Book page 62

Condition
Overload relay cuts out
60
Fault
Overload relay cut out
Air pressure above pre-set
starting pressure
Overload relay incorrectly set
Solenoid valve out of order
Unloader plunger jammed
Blow-off silencer choked
Ambient temperature too high
Motor stops and starts too
frequently
Overcurrent due to motor or
compressor failure
Instruction book
Remedy
Reset overload relay. If the
relay cuts out again after
starting, see "Overload relay
cuts out"
Compressor will start when air
pressure is lower than pre-set
starting pressure of air pressure
switch
Check and adjust. Reset relay
Remove and check. Replace if
necessary
Inspect and replace parts
where necessary
Replace
Improve ventilation of room
See "Too frequent starting/too
short operating periods"
Consult Atlas Copco
2920 7090 00