MNL-0295
August 27, 2009 Page 27
3.5.2 Troubleshooting Tables
3.5.2.1 Compressor Block
TROUBLE CAUSE REMEDY
Compressor does not attain final
pressure.
Condensate drain valves leaking Tighten and reseal.
Final pressure safety valve
defective (blows to soon)
Replace safety valve
No cartridge in P0 Filter system.
(air escaping through the car-
tridge safety bore.)
Replace cartridge
Vent screw for final pressure
safety valve not in operating
position.
To vent, unscrew until com-
pletely open.
Air delivery drops
Intake filter dirty Clean or replace filter cartridge.
Pipe coupling leaking Retighten couplings.
Excessive wear of the 3rd stage
piston
Replace piston and sleeve of 3rd
stage.
Intermediate pressure safety
valve blows
Intermediate pressure too high
because of defective inlet or
pressure valve of the following
stage.
Check and replace inlet or pres-
sure valve.
Safety valve leaking Replace safety valve.
Air escaping through the car-
tridge safety bore
Cartridge missing Replace cartridge
Cartridge O-rings defective Check and replace O-rings
Taste of oil in the air
Cartridge saturated Replace cartridge
Unqualified lubricant being used Replace with approved oil.
Compressor overheats
Insufficient cooling air
Inlet and pressure valve of one
stage leaking, or direction of
rotation incorrect.
Ambient temperature too high.
Check for a maximum ambient
temperature of 113° F (45° C).
Direction of rotation is incorrect. Correct direction of rotation.
Inlet and pressure valve of one
stage is leaking
Check valves, clean and replace
if necessary.
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