54
IMT CAS3560 Air Compressor Manual Part No. 99903566
PROBLEM
CAUSE
RESOLUTION
Shaft seal leak.
Defective seal.
Replace seal, or contact authorized
distributor or IMT Technical
Support.
Pressure relief valve opens. Compressor
operating
over
pressure.
Inspect and verify pressure control
valve and control connections.
Remove, disassemble, and clean
pressure control valve.
Reassemble and reinstall.
Defective valve.
Replace
valve.
Plugged coalescer filter.
Replace
filter.
Speed control does not come
up.
Parking brake is not set.
Engage parking brake.
Blown fuse.
Check and replace 5 amp fuse.
Compressor is not making air.
Insure compressor is engaged and
that the pulleys are turning.
No signal to speed control
module from compressor.
With compressor running, check for
12 volts across 20 lb pressure
switch (N.O.). If switch is not
closing, replace.
With the compressor off, check for
12 volts across 5 lb pressure switch
(N.C.). If switch does not close,
replace switch.
Speed control comes on when
engaging the parking brake with
the PTO off.
20 lb pressure switch.
With the compressor off, check for
12 volts across 20 lb pressure
switch. If switch is not open,
replace switch.
Compressor has experienced a
"flash".
Low oil level, high operating
temperature, or oil starvation.
See resolutions in troubleshooting
guide for low oil level, high
operating temp., or oil starvation
conditions.
Check oil level per filling
instructions. Fill as required.
See Flash Recovery Procedure.
Excessive blowdown time.
Blowdown valve stuck.
Replace
valve.
Minimum pressure valve stuck.
Replace
valve.
Oil discharges from blowdown
valve.
Bad seal in blowdown valve.
Replace
seal.
Improper blowdown valve
installation.
Remove and reinstall per parts
section.
