Sullair 175, Operators Manual And Parts Lists

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Section 5
MAINTENANCE
27
TROUBLESHOOTING (continued)
SYMPTOM PROBABLE CAUSE REMEDY
COMPRESSOR WILL NOT
BUILD UP FULL DISCHARGE Defective Pressure Regulator Check diaphragm and replace if necessary
PRESSURE (CONTINUED). (kit available).
Defective Idle Warm---up Valve Order kit or replace valve.
IMPROPER UNLOADING
WITH AN EXCESSIVE PRESSURE
BUILD---UP CAUSING PRESSURE Pressure Regulating Valve Is Set
RELIEF VALVE TO OPEN Too High Readjust.
Leak In Control System Causing Check control lines.
Loss Of Pressure Signal
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 Replace pressure relief valve.
Opening At Too Low Of Pressure
Defective Pressure Regulator Check diaphragm and replace if necessary
(kit available).
INSUFFICIENT AIR DELIVERY Engage Idle Warm---up Valve 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 Valve Order kit or replace valve.
EXCESSIVE COMPRESSOR
FLUID CONSUMPTION Clogged Return Line Clear orifice and return line strainer.
Leak In The Lubrication System Check all pipes, connections and
components.
Separator Element Damaged Or Not
Functioning Properly Change separator element.
COMPRESSOR OVERHEATING Low Sump Fluid Level Fill.
Loose Or Broken Fan Belt Tighten or change belt.
Dirty Fluid Cooler Core Clean core thoroughly.
Plugged Compressor Fluid Filter Change element.
Faulty Thermostat Change thermostat element.
Plugged Fluid Cooler Tube (Internal) Replace cooler.