AIR IN ARC
®
300 SERIES ALL-IN-ONE POWER SYSTEM
®
SECTION 7: TROUBLESHOOTING
090012-OP_r0
PAGE - 109
COMPRESSOR (CONTINUED)
Compressor overheats (continued)
This condition will cause a
compressor shutdown and
compressor fault light to turn
on. Before restarting the
compressor, determine the
cause for overheating.
Insufficient air flow over cooler
Check for obstructions (frame, body, etc.) to
cooling air flow.
Defective temperature switch
Check switch; replace if necessary.
Compressor oil filter plugged
Replace filter; refer to
Section 6.6.4,
Replacing the Compressor Oil Filter
Element
.
Input rpm too high
Adjust to proper setting; refer to
Section
6.6.13, Adjusting the Engine Speed
, and
the Engine Operator’s Manual.
Fan not operating
Low oil; check oil level and refill to proper
level if necessary (ensure machine is
parked on a level surface). Refer to
Section
6.6.3, Checking the Compressor Oil
.
Belt slip on hydraulic pump. Refer to
Section 6.6.15.5
or
Section 6.6.15.6
.
Compressor shuts down with air
demand present
Compressor temperature switch
opening
Check compressor oil level. Replenish if
necessary.
Restricted cooling air intake
Reposition machine.
Fan not operating
Low oil; check oil level and refill to proper
level if necessary (ensure machine is
parked on a level surface). Refer to
Section
6.6.3, Checking the Compressor Oil
.
Belt slip on hydraulic pump. Refer to
Section 6.6.15.5
or
Section 6.6.15.6
.
Compressor oil filter plugged
Replace filter; refer to
Section 6.6.4,
Replacing the Compressor Oil Filter
Element
.
Clutch faulty
Inspect; replace if necessary.
Plugged or restricted cooler core
Flush cooler. Consult the Vanair Service
Department for assistance in cleaning/
flushing the cooler core.
Contaminated cooler fins
Clean cooler fins. Refer to
Section 6.6.11,
Inspecting the System Coolers
.
Compressor will not build up
pressure
Low compressor oil level
Check oil level and refill to proper level if
necessary (ensure machine is parked on a
level surface). Refer to
Section 6.6.3,
Checking the Compressor Oil
.
Continued on next page
7.2 TROUBLESHOOTING GUIDE
Fault/Malfunction
Possible Cause
Corrective Action
