19
YES. IS COOLANT LEVEL CORRECT?
NO. CORRECT COOLANT AND TRY AGAIN.
YES. SUSPECT PROBLEM WITH COOLANT STOP VALVE.
CHECK WIRING AND VALVE OPERATION (SEE
PROCEDURE 2.5)
SG, SE: NO CONTROL POWER
YES. IS AIREND DISCHARGE TEMPERATURE GREATER THAN
210°F AT TIME OF SHUTDOWN?
NO
DOES VOLTAGE CONTINUOUSLY
READ 110-130 VAC AT TIME OF
SHUTDOWN?
NO. CHECK
1ATS
YES. SE: CHECK FOR PHASE MONITOR
SG: CHECK FOR INTERSTAGE PRESSURE SWITCH ON 2 STAGE OR PHASE MONITOR.
= 115 VOLTS AC IS NOT APPLIED TO THE CONTROLLER BUT CONTROLLER IS POWERED-UP.
DOES UNIT SHUT DOWN IN LESS
THAN 12 SECONDS AFTER START-UP?
SE CONTROLLER:
MEASURE VOLTAGE AC
TERMINAL BTS1-6 AND J4-29
SG CONTROLLER:
MEASURE VOLTAGE AC
P1 10 AND TERMINAL 1TB-1
IS THE VOLTAGE GREATER THAN
110 VAC?
IS THE VOLTAGE GREATER THAN
110 VAC?
NO. FUSE 3FU IS BAD, LOW VOLTAGE OR
THE TRANSFORMER IS BAD
NO. FUSE 2FU IS BAD, LOW VOLTAGE OR
THE TRANSFORMER IS BAD
YES. MEASURE VOLTAGE AC
TERMINAL BTS1-7 AND J4-29
IS THE VOLTAGE GREATER THAN
110 VAC?
NO. BAD CONTACT ON E- STOP
SG CONTROLLER:
MEASURE VOLTAGE AC
P1 - 10 AND TERMINAL 1TB-4
IS THE VOLTAGE GREATER THAN
110 VAC?
NO. BAD CONTACT ON E-STOP
SE CONTROLLER:
MEASURE VOLTAGE AC
TERMINAL BTS1-8 AND J4-29
DOES VOLTAGE CONTINUOUSLY
READ 110-130 VAC AT TIME OF
SHUTDOWN?
YES. MEASURE VOLTAGE AC
P1 - 10 AND TERMINAL 1TB2
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