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Problem Possible faults Corrective actions
15. Compressor shuts down
through a shut-down
switch.
a. Alternator V-belt broken or
slipping,
b. Compressor overheating.
c. Engine oil pressure too low.
d. Engine temperature too high
a. Re-tense or replace V-belt.
b. See condition 17.
c. Check engine lubricating system.
d. Check engine cooling; see engine operation
manual
16. Air and oil expelled from
air filter after stopping.
a. Unloader valve defective,
b. Wrong oil type with no foam-
retarding additives.
a. Repair valve.
b. Consult Atlas Copco.
17. Compressor overheating, 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 clogged.
g. Oil filter clogged.
a. Relocate compressor for adequate
ventilation.
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.
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