Instruction book
6 Problem solving
1 Insufficient air pressure
a Air leak
a Check and correct as necessary
b Air filter choked
b Replace filter
c Air pressure switch incorrectly set
c Adjust switch
d Air consumption exceeds maximum output of compressor
d Check equipment connected
e Damaged valve
e Inspect valves and replace parts where necessary
f Unloader 1) malfunctioning
f Inspect and replace parts where necessary
g Solenoid valve 1) out of order
g Remove and check. Replace if necessary
2 Unit does not speed up
a Voltage drop at motor terminals
a Consult power supplier. Use correct size of cable
b Unloader malfunctioning
b See 1f
c Solenoid valve out of order
c See 1g
d Blow-off silencer 1) choked
d Replace
3 Air receiver pressure rises above maximum and causes safety valve to blow
a Air pressure switch or pilot valve 1) incorrectly set or out of order
a Check. Replace switch or valve, if necessary
b Solenoid valve defective
b See 1g
c Unloader malfunctioning
c See 1f
d Blow-off silencer choked
d See 2d
4 Relief valve blows 1)
a Defective inlet valve in HP cylinder head
a Inspect and replace part(s) as necessary
b Relief valve not airtight
b Replace valve
5 Receiver does not hold pressure
a Check valve leaks
a Check for broken valve and springs
b Air leaks
b Check and correct as necessary
6 Too frequent starting/too short operating periods
a Air pressure switch or pilot valve 1) incorrectly set
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