Vanair AIR N ARC RELIANT 300 Series Operations Manual & Parts List page 127

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AIR IN ARC 300 SERIES ALL-IN-ONE POWER SYSTEM
7.2 TROUBLESHOOTING GUIDE
Fault/Malfunction
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.
Compressor shuts down with air
demand present
Compressor will not build up
pressure
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Possible Cause
COMPRESSOR (CONTINUED)
Insufficient air flow over cooler
Defective temperature switch
Compressor oil filter plugged
Input rpm too high
Fan not operating
Compressor temperature switch
opening
Restricted cooling air intake
Fan not operating
Compressor oil filter plugged
Clutch faulty
Plugged or restricted cooler core
Contaminated cooler fins
Low compressor oil level
090012-OP_r0
SECTION 7: TROUBLESHOOTING
Corrective Action
Check for obstructions (frame, body, etc.) to
cooling air flow.
Check switch; replace if necessary.
Replace filter; refer to Section 6.6.4,
Replacing the Compressor Oil Filter
Element.
Adjust to proper setting; refer to Section
6.6.13, Adjusting the Engine Speed, and
the Engine Operator's Manual.
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.
Check compressor oil level. Replenish if
necessary.
Reposition machine.
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.
Replace filter; refer to Section 6.6.4,
Replacing the Compressor Oil Filter
Element.
Inspect; replace if necessary.
Flush cooler. Consult the Vanair Service
Department for assistance in cleaning/
flushing the cooler core.
Clean cooler fins. Refer to Section 6.6.11,
Inspecting the System Coolers.
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
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