Atlas Copco XAS96 DdG Manuel D'instructions page 35

Problem
13. Excessive compressor oil
consumption. Oil mist being
discharged from air outlet
valve(s).
14. Compressor shuts down
through a shut-down switch.
15. Air and oil expelled from
air filter after stopping.
16. Compressor overheating.
Generator DdG:
17. Circuit breakers are off
(down).
18. Green lamp H3 is
deactivated.
Generator DdG IT:
19. Circuit breakers Q1 are off
(down).
20. Green lamp H3 is
deactivated.
21. The red lamp H4 is active.
Possible faults
a. Restrictor in oil scavenging line (SL) clogged.
b. Oil separator element (OS) defective.
c. Oil level too high.
a. Alternator V-belt broken or slipping.
b. Compressor overheating.
c. Engine oil pressure too low.
d. Engine temperature too high.
a. Unloader valve (UV) defective.
b. Wrong oil type with no foam-retarding
additives.
a. Insufficient compressor cooling.
b. Oil cooler (OC) clogged externally.
c. Oil system clogged internally.
d. Oil level too low.
e. Cooling fan (F) defective.
f. Oil separator element (OS) clogged.
g. Oil filter (OF) clogged.
a. Short circuit or overload
b. Circuit breakers switched off.
a. Circuit breakers are off.
b. Serious electrical fault.
a. Short circuit.
b. Temperature in generator too high.
a. Circuit breakers are off.
b. Serious electrical fault.
a. Insulation fault.
I
NSTRUCTION
Corrective actions
a. Dismount, clean and refit restrictor.
b. Replace element.
c. Check for overfilling. Release pressure and
drain oil to correct level.
a. Re-tense or replace V-belt.
b. See condition 16.
c. Check lubricating system.
d. Check engine oil system;
see Engine Operation Manual.
a. Repair valve.
b. Consult Atlas Copco.
a. Relocate compressor.
b. Clean cooler; see section 4.6.
c. Consult Atlas Copco.
d. See section 4.4.
e. Replace fan.
f. Replace oil separator.
g. Replace oil filter.
a. Remedy fault. Switch on circuit breakers.
b. Switch on circuit breakers.
a. Switch circuit breakers on.
b. Consult Atlas Copco.
a. Remedy fault. Switch on circuit breakers.
b. Check generator cooling.
a. Switch circuit breakers on.
b. Consult Atlas Copco.
a. Disconnect the electrical device, stop and
restart the unit.
The red lamp is deactivated:
Insulation fault in the electrical device.
The red lamp is again activated:
Consult Atlas Copco.
M
ANUAL
35