Atlas Copco XAS 185 KDU T4F HOP Instruction Manual page 53

Problem: After working some time, the unit stops through a shutdown switch.
Possible faults
Engine oil pressure too low.
Compressor or engine overheating.
Fuel tank contains insufficient fuel.
Low coolant level.
Problem: Air and oil mist expelles from air filters immediately after stopping.
Possible faults
Check valve at element outlet.
Problem: Compressor overheating.
Possible faults
Insufficient compressor cooling.
Oil cooler clogged externally.
Oil cooler clogged internally.
Oil filters clogged.
Oil level too low.
Thermostatic by-pass valve remains stuck in open position.
Fan blade(s) broken.
Oil separator element (OS) clogged.
Corrective actions
Refer to the engine instruction manual.
See corrective actions "Compressor overheating".
Fill fuel tank.
Top up cooling system.
Corrective actions
Remove and inspect. Replace if necessary. Replace air filter elements and safety cartridges. Check the oil level
and add oil if necessary. Run the compressor for a few minutes, stop and recheck oil level.
Corrective actions
Locate compressor away from walls; when banked with other compressors, leave space between them.
Clean oil cooler. Refer to section Cleaning Coolers.
Consult Atlas copco.
Replace oil filters.
Check oil level. Top up with recommended oil if necessary.
Remove valve and check for proper opening and closing. Replace if out of order.
Check and correct if necessary.
Have element removed and inspected by an Atlas copco Service representative.
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