Section 5
MAINTENANCE
34
5.13 TROUBLESHOOTING GUIDE (CONTINUED)
SYMPTOM PROBABLE CAUSE REMEDY
COMPRESSOR
WILL NOT BUILD UP
FULL DISCHARGE
PRESSURE
For compressors with idle warm-up controls,
switch toggle to “run” for full operation.
Air Demand Is Too Great Check service lines for leaks or open valves.
Dirty Air Filter Check the filter indicator and change element
if required.
Defective Pressure Regulator Check diaphragm and replace if necessary
(kit available).
Defective Idle Warm-up Control Replace control.
IMPROPER
UNLOADING WITH
AN EXCESSIVE
PRESSURE BUILD-
UP CAUSING PRES-
SURE RELIEF
VALVE TO OPEN
Pressure Regulating Valve Is Set Too
High
Readjust.
Leak In Control System Causing Loss
Of Pressure Signal
Check control lines.
Defective pressure regulating valve; repair
valve (kit available).
Inlet Valve Jammed Free or replace valve.
Restriction In The Control System Check all control lines and components. Ice
and/or other contaminants could cause
restrictions.
Defective Pressure Relief Valve
Opening At Too Low Of Pressure
Replace pressure relief valve.
Defective Pressure Regulator Check diaphragm and replace if necessary
(kit available).
INSUFFICIENT AIR
DELIVERY
Engage Idle Warm-up Control In “Run”
Position For Full Compressor
Operation
Plugged Air Filter Replace.
Plugged Air/Fluid Separator Replace separator element and also change
compressor fluid and fluid filter at this time.
Defective Pressure Regulator Adjust or repair.
Engine Speed Too Low Readjust engine speed.
Defective Idle Warm-up Control Replace control.
EXCESSIVE COM-
PRESSOR FLUID
CONSUMPTION
Clogged Return Line Clear orifice and return line strainer.
Leak In The Lubrication System Check all pipes, connections and compo-
nents.
Separator Element Damaged Or Not
Functioning Properly
Change separator element.
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