Section 5
MAINTENANCE
29
Should the problem(s) persist after making the rec-
ommended check, consult your nearest Sullair rep-
resentative or the Sullair Corporation.
TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE REMEDY
COMPRESSOR WILL NOT No Fuel Check fuel level and add fuel if necessary.
START Check fuel shut---off valve.
Plugged Fuel Filter Replace the ele ment.
Low Battery Voltage Recharge or replace if necessary.
Loose battery cables; tighten cables.
Dirty battery cables; clean thoroughly.
Plugged Air Filter Clean or replace the element.
Engine Problems May Have
Developed. Refer to Engine Operator’s Manual.
Defective Engine Oil Pressure Switch Check continuity flow and replace
the switch if necessary .
Blown Fuse In Wiring Harness Check continuity and replace if necessary.
COMPRESSOR SHUTS DOWN
WITH AIR DEMAND PRESENT No Fuel Check fuel level and add fuel if necessary .
Compressor Discharge Temperature
Switch Is Open Cooling air flow is insufficient; clean cooler
and check for p roper ventilation.
Low fluid sump level; add fluid.
Clogged compressor fluid filter; change
element.
The temperature regulating section of the
fluid control center is not functioning
properly; change the thermostat element.
Defective discharge temperature switch;
check for a short or open circuit to the
engine fuel rack solenoid. Should this check
out normally, it could be possible that the
temperature switch itself is defective.
Defective Engine Oil Pressure Switch Check continuity and replace if necessary.
Blown Fuse In Wiring Harness Check continuity and replace if necessary.
COMPRESSOR WILL NOT
BUILD UP FULL DISCHARGE For compressors with idle warm---up valves,
PRESSURE engage valve 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.
Pressure Regulator Out Of Adjustment Adjust regulator according to control
adjustment instructions in the Maintenance
section.
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