15
ORIG, SG, SE: HIGH AIREND TEMPERATURE
= AIREND DISCHARGE TEMPERATURE EQUAL TO OR GREATER THAN 228°F.
FAULTY THERMOSTATIC VALVE
DIRTY COOLERS
HIGH AMBIENT
ABOVE 115°F
DOES UNIT SHUT DOWN IN LESS THAN 10 SECONDS AFTER START-UP?
YES. IS COOLANT LEVEL CORRECT?
NO
NO. CORRECT COOLANT AND TRY AGAIN.
YES. SUSPECT PROBLEM WITH COOLANT STOP VALVE.
CHECK WIRING AND VALVE OPERATION (SEE PROCEDURE 2.5)
AIR-COOLED = BAD ENVIRONMENT
WATER-COOLED = BAD WATER
FOULING TUBES
EXTERNAL COOLANT LEAK CAUSING
AIR-COOLED HEAT EXCHANGER TO CLOG
WITH DIRT
RESTRICTIVE EXHAUST DUCTING
> .25” WATER COLUMN
RECIRCULATION OF COOLING AIR
IS THE VALVE BYPASSING THE COOLER?
SWAP WITH 4ATT FOR QUICK DETERMINATION (NOT SE)
CHECK FOR HIGH MOTOR AMPS
UNUSUAL NOISE
HIGHER VIBRATION THAN NORMAL
METAL IN THE COOLANT FILTER
FAULTY THERMISTOR 2ATT
FAULTY AIREND
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