Problem Solving - Atlas Copco XRHS 506 Instruction Manual

Instruction Manual
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Problem solving

It is assumed that the engine is in good condition and that there is adequate fuel flow to the filter
and injection equipment.
Make sure that the wires are not damaged and that they are clamped tight to their terminals.
For denomination of switches, relays, etc., see 2.5 Electric system.
See also section 3.4.1 Control panel.
Problem: Compressor capacity or pressure below normal.
Possible faults
Air consumption exceeds capacity of
compressor.
Choked air filter elements (AF).
Regulating valve (RV) defective.
Blow down valve stuck in open position.
Loading valve (LV) leaking past O-ring.
Oil separator element clogged.
Air intake throttle valve remains partially closed. Remove air filters, air intake manifold and
Safety valve (SV) leaking.
Blow-off valve leaking.
2954 2510 03
An electrical fault must be traced by an electrician.
Corrective actions
Check equipment connected.
Remove and inspect elements. Clean or replace,
if necessary.
Have regulating valve removed and inspected
by an Atlas Copco Service representative.
Check and correct as necessary.
With compressor running at max. load speed,
disconnect hose leading to unloader. If air leaks
from the hose, remove and inspect loading
valve. Replace damaged or worn O-rings.
Have element removed and inspected by an
Atlas Copco Service representative.
throttle valve spring seat. Withdraw the valve
and inspect. Replace parts where necessary.
Caution: the spring seat is fixed with 4 short
and 2 long setscrews: first remove the short
screws, then release the spring tension
unscrewing the long ones.
Remove and inspect. Replace if not airtight after
reinstallation.
Remove and inspect. Replace if necessary.
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