AIR IN ARC
®
300 SERIES ALL-IN-ONE POWER SYSTEM
®
SECTION 7: TROUBLESHOOTING
090010-OP_r0
PAGE - 103
COMPRESSOR (CONTINUED)
Compressor overheats
This will cause a compressor
shutdown and compressor fault
light to turn on. Before
restarting the compressor,
determine the cause for
overheating (continued)
Defective switch
Replace switch.
Obstructed fluid cooler
Clear debris/dirt from cooler core/flush
shroud.
Obstructed cooler fins
Clear/clean if required. Refer to
Section
6.5.12
.
Insufficient air flow over cooler
Check for obstructions (frame, body, etc.) to
cooling air flow.
Compressor oil filter plugged
Replace filter; refer to
Section 6.5.4,
Replacing the Compressor Oil Filter
Element
.
Input rpm too high
Adjust to proper setting; refer to
Section
6.5.14, Adjusting the Engine Speed
, and
the Engine Operator’s Manual.
Fan not operating
Check fan fuse for continuity, and replace if
necessary. See
Section 6.6,
Servicing the
System Fuses and Circuit Breakers
.
Check fan switch for continuity. Replace if
necessary.
Check fan motor.
Check fan relay for continuity. Replace if
necessary.
Check all electrical connections and lines;
clean/renew connections where needed.
Compressor shuts down with air
demand present
Compressor temperature switch
Check for loose wire; verify wire
connections.
Faulty temperature switch. Replace switch.
Restricted cooling air intake
Reposition machine.
Fan not operating
Check fan fuse for continuity, and replace if
necessary. See
Section 6.6,
Servicing the
System Fuses and Circuit Breakers
.
Check fan switch for continuity. Replace if
necessary.
Check fan motor.
Check fan relay for continuity. Replace if
necessary.
Continued on next page
7.2 TROUBLESHOOTING GUIDE
Fault/Malfunction
Possible Cause
Corrective Action
