37
Instruction Manual
Problem Possible faults Corrective actions
5. Engine is running, but shuts
down immediately after
start button (S) has been
released.
a. Start button (S) released too soon.
b. Insufficient engine oil pressure.
c. Fuel tank contains insufficient fuel.
a. Release button after engine oil pressure has
built up above the minimum allowed level.
b. Stop at once, consult the engine instruction
manual.
c. Fill fuel tank.
6. Compressor is loaded
automatically to full
capacity after starting.
a. Loading valve stuck in loading position.
b. Air intake throttle valve stuck in opened
position.
c. Air leaks in regulating system.
a. Remove and dismantle loading valve.
Correct if necessary.
b. Check and, if necessary consult Atlas
Copco.
c. Check hoses and their fittings. Stop leaks;
replace leaking hoses.
7. Unit does not load after
pressing the loading valve
button.
a. Regulating valve defective. a. Check and if necessary consult Atlas
Copco.
8. Engine does not speed up
immediately after
compressor loading valve
button has been pressed and
compressor does not deliver
air.
a. Regulating valve defective.
b. Air intake throttle valve stuck in closed
position.
a. Check and, if necessary consult Atlas
Copco.
b. Check and, if necessary consult Atlas
Copco.
9. Excessive compressor oil
consumption. Oil mist
being discharged from air
outlet valves.
a. Compressor oil level too high. a. Check oil level. Release pressure and drain
oil to correct level.
10. Compressor capacity or
pressure below normal.
a. Air consumption exceeds capacity of
compressor.
b. Choked air filter elements.
c. Unloading valve not completely open.
a. Check equipment connected.
b. Remove and inspect elements.
c. Check and, if necessary consult Atlas
Copco.
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