Atlas Copco XRHS 506 Instruction Manual page 89

Instruction Manual
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
opened position.
Fan blade(s) broken.
Oil stop valve malfunctioning.
Oil separator element (OS) clogged.
Alternator precautions
1 Never reverse the polarity of the battery or the alternator.
2 Never break any alternator or battery connections while the engine is running.
3 When recharging the battery, disconnect it from the alternator. Before using booster cables to
start the engine, be sure of the polarity and connect the batteries correctly.
4 Never operate the engine without the main or voltage sensing cables connected in the circuit.
Oiltronix failure
Manually locking the valve (temporary solution)
(1)
(2)
Block the valve by screwing a bolt (M5 x 20) through the housing and in the blind hole in the
coupling.
2954 2510 03
Disconnect the connector (1) of the stepper motor, to ensure that the
stepper motor does not try to rotate the valve.
Rotate the white coupling of the valve manually until the blind hole (2)
in the coupling is in line with the threaded hole (3) in the housing.
(3)
Check the correct position of the blind hole with a ∅ 4 mm pin.
Let an Atlas Copco technician repair or replace defective parts asap.
Corrective actions
Locate compressor away from walls; when
banked with other compressors, leave space
between them.
Clean oil cooler. Refer to section 4.12 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.
Remove and inspect valve.
Have element removed and inspected by an
Atlas Copco Service representative.
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