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Troubleshooting
Machine Will Not Start
If the machine will not start, check the following:
I. Fuel level
II. Plugged fuel filter
III. Low battery voltage
IV. Loose battery cables
V. Plugged air filter
VI. Engine problems may have developed, refer
to your engine manual
VII. Defective engine oil pressure switch, check
continuity
VIII. Bad compressor high discharge temperature
switch. This switch is normally open. Check
for continuity across both terminals.
Unplanned Shutdown
If the machine shuts down unexpectedly, check the
following:
I. Check to determine if compressor oil is at
proper level
II. Check oil cooler for dirt, slush, ice on the fins,
or any other obstructions to cooling airflow
III. Make a thorough external check for any cause
of shutdown such as broken hoses, oil lines,
wires, etc.
IV. Check compressor high discharge temperature
switch; it should normally be open. The
switch is located in piping on the bottom of
sump tank.
V. Check electric fan motor and wiring.
Sump Pressure Does Not Blow
Down
If after the compressor is shutdown, pressure does not
automatically blow down (this process should take
about 1 minute), check for:
I. Automatic blow down valve may be
inoperative.
II. Blockage in air line form blow down valve to
coalescer head.
III. Orifice at blow down clogged.
Engine Overheating
If the engine is overheating, check the following:
I. Check oil level. Add oil if required.
II. Air blockage into engine from blower side.
III. Air blockage from exhaust side of engine.
IV. Dirty oil in engine.
Summary of Contents for Gulfstream 35
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