Product Manual

Polar Air Rotary Screw Compressors
29
Troubleshooting Chart
Problem Possible Causes
Resolutions
Excessive vibration
1. Loose component mounting
1. Inspect & tighten
2. Motor or compressor bearing
failure
2. Replace bearing; Contact Eaton
Compressor
3. External sources 3. Check for other sources of vibration, other
than the compressor
4. V-belts slipping 4. Adjust belt tension or replace belts
5. Shipping brackets in place 5. Remove shipping brackets
Black residue on belt
guards
1. V-belts loose 1. Adjusted belt tension
2. Sheave misaligned 2. Align sheaves
3. Excessive belt wear 3. Replace belts
4. Using non-OEM belt 4. Use ONLY OEM parts
Shaft seal leak
1. Defective shaft seal
1. Replace or contact Eaton Compressor
During start-up, PLC
shows normal running
functions, but
compressor not running
1. Blown fuse/breaker for control
voltage
1. Replace fuse or reset breaker
2. Faulty E-Stop button – causing
break in control voltage circuit
2. Replace E-Stop button
Low air pressure in
storage tank while
compressor maintains
programmed air
pressure
1. Check valve installed between
compressor & storage tank
1. Remove check valve
2. Dryer frozen-up restricting air
flow
2. Bypass dryer, if available; allow dryer to
thaw; if symptom persist, make
adjustments to dryer
3. Inline filter between compressor
& storage tank is clogged
3. Replace filter