Vanair Air N Arc All-in-One Power Systems 300 Operations Manual & Parts List page 124

SECTION 7: TROUBLESHOOTING
7.2 TROUBLESHOOTING GUIDE
Fault/Malfunction
Compressor system over-
pressures (continued)
This condition will cause a
compressor shutdown, and a
fault light will turn on. Before
restarting the compressor,
determine the cause of the over-
pressure.
No service air output
Low service air output
Compressor stalls
System operating pressure below
specified minimum
PAGE - 106
AIR IN ARC
Possible Cause
COMPRESSOR (CONTINUED)
Defective safety valve
Plugged coalescer
Pressure switch setting too high, or
switch is malfunctioning
If equipped, OSHA valve/velocity fuse,
not functioning properly
Clutch malfunctioning
Wiring
Fuses and/or relays
Belt(s)
Clogged compressor air filter
Solenoid valve sending continuous
signal to inlet valve
Incorrect compressor speed
Pressure switch setting too high
Speed is set too low
Air demand too high
Compressor capacity too low to
accommodate demand
090010-OP_r0
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300 SERIES ALL-IN-ONE POWER SYSTEM
Corrective Action
Replace safety valve.
Replace coalescer. Refer to Section 6.5.6,
Replacing the Spin-on Air/Oil Coalescer.
Adjust pressure switch setting. Refer to
Section 2.2.7, Adjustable Pressure
Switch, and Section 6.5.15, Adjusting the
Pressure Setting. Replace if switch
continues to deviate from setting.
Reset or replace OSHA valve.
Check clutch. Replace if necessary.
Check wiring: Loose—secure ;
faulty—replace.
Check fuses and relays for continuity.
Replace if necessary.
Belt(s) out of position or malfunctioning.
Consult Section 6.5.16, and its sub-
sections.
Check air filter. Replace if necessary; refer
to Section 6.5.1, Compressor Air Filter.
Rebuild or replace solenoid valve if
defective. Refer to Section 6.5.8.
Adjust speed. Refer to Section 6.5.14.
Adjust pressure switch setting. Refer to
Section 2.2.7, Adjustable Pressure
Switch, and Section 6.5.15, Adjusting the
Pressure Setting. Replace if switch
continues to deviate from setting.
Check to see if compressor goes to high
speed.
Check air tools for wear, damage, or
malfunctions. Replace or repair.
Substitute larger capacity compressor
system.
Continued on next page
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