SECTION 6 3000-4500 USER MANUAL
69
Compressor Will Not Build Full
Discharge Pressure
Air Demand is Too Great Check service lines for leaks or open
valves.
Dirty Air Filter Check the filter indicator and inspect and/or
change element if required.
Inlet Valve Bleed Orifice Plugged Ensure control line bleed orifice located
inside inlet valve is not plugged.
Pressure Regulator Out of Adjust-
ment
Adjust regulator according to control adjust-
ment instructions in the Maintenance sec-
tion.
Defective Pressure Regulator Replace regulator.
Defective Unload Solenoid Valve Check that the valve closes when ener-
gized. Replace the coil or the complete
valve if defective.
Line Pressure Rises Above
Unload Pressure Set-Point
Leak in Control System Causing
Loss of Pressure Signals
Check for leaks.
Inlet Valve Stuck Open Remove the intake hose and check for inlet
valve operation.
Defective Unload Solenoid Valve Check that the valve is open when de-ener-
gized. Replace if necessary.
Plugged Control Line Strainer Clean strainer (screen and O-ring replace-
ment kit available).
Defective Blowdown Valve Check that separator/sump tank pressure is
exhausted to the atmosphere when the
solenoid valve opens. Repair or replace if
necessary (kit available).
Excessive Compressor Fluid
Consumption
Clogged Return Line or Orifice Clean strainer (screen and O-ring replace-
ment kit available).
Clean orifice.
Separator Element Damaged or
Not Functioning Properly
Change separator.
Leak in the Lubrication System Check all pipes, conections and compo-
nents.
Excess Fluid Foaming Drain and change.
Fluid Level Too High Drain and change. Check that the compres-
sor temperature has not dropped below
170F (76.7C).
Pressure Relief Valve Opens
Repeatedly
Defective Pressure Relief Valve Replace.
Plugged Separator Check separator differential.
SYMPTOM PROBABLE CAUSE REMEDY
To Next Page
Loading...
