AIR IN ARC
®
300 SERIES ALL-IN-ONE POWER SYSTEM
®
SECTION 7: TROUBLESHOOTING
090034-OP_r0
PAGE - 105
COMPRESSOR (CONTINUED)
Compressor system over-
pressures (continued)
Pressure gauge is malfunctioning
Check gauge for proper operation; replace if
necessary and check controls.
No service air output
If equipped, OSHA valve/velocity fues,
not functioning properly
Reset or replace OSHA valve.
Low service air output (See aslo
Compressor will not build up
pressure
)
Clogged compressor air filter
Check air filter. Replace if necessary; refer
to
Section 6.6.1, Compressor Air Filter
.
Solenoid valve sending contiuous
signal to inlet valve
Rebuild or replace solenoid valve if
defective. Refer to
Section 6.6.8
Incorrect compressor speed
Adjust speed. Refer to
Section 6.6.12
.
Minimum pressure valve stuck
Rebuild minimum pressure valve
Compressor stalls
Pressure switch setting too high
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.
Speed is set too low
Check hydraulic pressure and GPM
System operating pressure below
specified minimum
Air demand too high
Check air tools for wear, damage, or
malfunctions. Replace or repair.
Compressor capacity too low to
accommodate demand
Substitute larger capacity compressor
system.
System leaks or is damaged
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.
Pressure switch set too low/
malfunction
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.
Input rpm too low
Adjust to proper setting.
Inlet valve contaminated or fails to
open.
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
7.2 TROUBLESHOOTING GUIDE
Fault/Malfunction
Possible Cause
Corrective Action
