Vanair AIR N ARC RELIANT 300 Series Operations Manual & Parts List page 123

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AIR IN ARC 300 SERIES ALL-IN-ONE POWER SYSTEM
7.2 TROUBLESHOOTING GUIDE
Fault/Malfunction
Compressor system over-
pressures (continued)
No service air output
Low service air output (See aslo
Compressor will not build up
pressure)
Compressor stalls
System operating pressure below
specified minimum
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Possible Cause
COMPRESSOR (CONTINUED)
Pressure gauge is malfunctioning
If equipped, OSHA valve/velocity fues,
not functioning properly
Clogged compressor air filter
Solenoid valve sending contiuous
signal to inlet valve
Incorrect compressor speed
Minimum pressure valve stuck
Pressure switch setting too high
Speed is set too low
Air demand too high
Compressor capacity too low to
accommodate demand
System leaks or is damaged
Pressure switch set too low/
malfunction
Input rpm too low
Inlet valve contaminated or fails to
open.
090034-OP_r0
SECTION 7: TROUBLESHOOTING
Corrective Action
Check gauge for proper operation; replace if
necessary and check controls.
Reset or replace OSHA valve.
Check air filter. Replace if necessary; refer
to Section 6.6.1, Compressor Air Filter.
Rebuild or replace solenoid valve if
defective. Refer to Section 6.6.8
Adjust speed. Refer to Section 6.6.12.
Rebuild minimum pressure valve
Adjust pressure switch setting. Refer to
Section 2.2.7, Adjustable Pressure
Switch, and Section 6.6.13 Adjusting the
Pressure Setting. Replace if switch
continues to deviate from setting.
Check hydraulic pressure and GPM
Check air tools for wear, damage, or
malfunctions. Replace or repair.
Substitute larger capacity compressor
system.
Inspect for leaks. Repair and/or replace
damaged parts as necessary. Use Section
9, Illustrated Parts List to visually confirm/
identify any part that needs to be replaced
before ordering part.
Adjust pressure switch setting. Refer to
Section 2.2.7, Adjustable Pressure
Switch, and Section 6.6.13, Adjusting the
Pressure Setting. Replace if switch
continues to deviate from setting.
Adjust to proper setting.
Remove valve and clean piston; repair/
replace inlet valve. Refer to Section 6.6.2,
Repairing the Air Inlet Valve. Order inlet
valve repair kit—see Table 9A: Recom-
mended Spare Parts List.
Continued on next page
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