Sullivan-Palatek 125G, Operating And Parts Manual

Page: 26 / 66

______________________________SULLIVAN-PALATEK
26
6.7 TROUBLESHOOTING, CON’T.
SYMPTOM PROBABLE CAUSES AND REMEDIES
B. MACHINE SHUTS DOWN WITH AIR
DEMAND PRESENT
4. Monitor temperature at micro processor:
normal discharge temperature should be
100-110° F (37-43° C) above ambient;
control is set to trip at 235-245°F (112-
118°C).
a. Cooling air flow restricted. Clean
cooler and check for proper
ventilation.
b. Ambient temperature is too high.
Provide sufficient ventilation.
c. Low lubricoolant level. Add
lubricoolant.
d. Clogged oil filter. Change the oil filter
element.
e. Thermostat not working properly.
Replace.
f. Check for proper cooling fan
operation. Fan should always be
running between 165° to 190°F.
SYMPTOM PROBABLE CAUSES AND REMEDIES
C. MACHINE WILL NOT BUILD UP FULL
DISCHARGE PRESSURE 1. Air demand too great. Repair system air
leaks. Add compressor capacity to satisfy
demand.
2. Dirty air filter. Change or clean element if
required.
3. Control pressure regulator out of
adjustment. Adjust regulator.
4. Defective control regulator. Check
diaphragm and replace if necessary.
5. Blowdown valve open. Repair or replace.
6. Micro processor control setting off. See 6.5
for adjustment procedure.