Atlas Copco XAS 97 JD - Technical Specifications; Safety Switch and Valve Settings; Compressor and Engine Specifications

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Problem Possible faults Corrective actions
14. Excessive compressor
oil consumption. Oil
mist being discharged
from air outlet valve (5-
fig. 4.2).
a. Restrictor in oil scavenging line
clogged,
b. Oil separator element (OS)
defective.
c. Oil level too high.
a. Dismount, clean and refit restrictor;
b. Replace element.
c. Check for overfilling. Release
pressure and drain oil to correct
level.
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.
7 Technical Specifications
7.1 Settings of Shutdown Switches and Safety Valve
Compressor XAS97 JD
Temperature safety switch trip point............................................................°F/(°C) 248/(120)
Safety valve effective opening pressure ..................................................psig/(bar) 150/(10.3)
(check stamping on valve)
Engine
Low oil pressure safety switch trip point ..................................................psig/(bar) 12/(.8)
Temperature safety switch trip point............................................................°F/(°C) 239/(115)
7.2 Compressor/Engine Specifications
Compressor
Maximum effective pressure....................................................................psig/(bar) 123/(8.5)
Normal effective working pressure...........................................................psig/(bar) 100/(7.0)
Minimum effective working pressure........................................................psig/(bar) 58/(4.0)
Typical oil content of the compressed air......................................................mg/m
3
<5
Free air delivery at working pressure,........................................................ cfm/(l/s) 185/(87)
maximum loading speed and referance conditions 1,2).
1) Referance conditions as specified are measured at the air inlet grating outside the canopy:
-Air intake pressure (absolute) 1 bar (14.5 psi)