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12.
TROUBLE-SHOOTING
TROUBLE
Compressor
Compressor does not reach
final pressure
Compressor output insufficient
Safety valves between individual
stages releasing pressure
Compressor running too hot
Control does not switch off,
final pressure safety valve relieving Final pressure safety valve defective Replace safety valve
Automatic: Condensate Drain (optional)
Drain valves do not close
Drain valves do not open
Solenoid valve does not close
Solenoid valve does not open
Instruction Manual Oil-Less Compressors
Condensate drain valve(s) and/
or fittings leaking
Premature opening of final safety
valve
Piston rings worn
Excessive piston clearance
Pipes leaking
Intermediate pressure too high
Valves not closing properly
Insufficient supply of fresh
cooling air
Intake or outlet valves not closing
properly
Wrong direction of rotation
Final pressure switch set too high
No control air
Drain valves leaking
Condensate drain valve piston seized Dismantle drain valve, clean or
Solenoid valve faulty
No electrical signal
Solenoid valve faulty
Continuous electrical signal
CAUSE
30
REMEDY
Tighten and reseal
Clean final safety valve and re-
adjust
Replace
Replace
Re-tighten
Check valves - see chapter 4 -
service and clean valves
Check location max. ambient
temperature + 40º C (105º F)
Check and clean valves, replace
as necessary
See arrow on compressor and
remedy accordingly
Correct setting
Check control air line
Dismantle drain valve and clean
replace valve
Check solenoid valve and replace
if necessary
Check for voltage from timer
Check solenoid valve and replace
if necessary
Check electrical control circuit and
timer
CAP-215
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