Gardner Denver EBB BB-7.5 HP Operating And Service Manual page 76

SYMPTOM
Alarm light on
(Refrigerant
compressor OFF)
POSSIBLE CAUSE
1. Air inlet temperature too high.
2. Refrigerant shortage.
3. Blocked condensor.
13–8–612 Page 66
REMEDY
1. Verify proper load and temperature
at dryer inlet.
2. Check for leaks using soap bubbles
or electronic leak detector. If
leaks are detected repair
immediately using industry
approved standards.
3. Clean condensor or remove
obstruction and restart unit.