BE AC255 - Maintenance; Troubleshooting

14
15
Maintenance
DAILY
1. Check oil level.
2. Drain condensation from air tank.
3. Check for any unusual noise or vibration.
4. Be sure all nuts and bolts are tight.
WEEKLY
1. Clean air filter. Replace air filter if necessary.
QUARTERLY OR 300 HOUR
1. Change compressor oil and air filter element.
2. Check safety valve.
3. Check pressure switch unloads to ensure compressor head unloads
whenever motor shuts down.
4. Clean and blow o pump fins and motor.
5. Inspect air system for leaks by applying soapy water to all joints.
Storage
PROCEDURE
1. Set the “AUTO/OFF” switch to “OFF” and unplug the compressor.
2. Be sure to drain the water from the air tank.
3. Protect the electrical cord and air hose from damage.
4. Store the air compressor in a clean and dry location.
Troubleshooting
TROUBLESHOOTING CHART
CONDITION CAUSE CORRECTIVE
Compressor won’t start 1. Loose electrical
connection
2. Motor overheated
1. Check wiring connection
2. Press reset button or
wait for automatic reset
Low pressure 1. Air leak in safety valve
2. Loose tube or fittings
3. Restricted air filter
4. Defective check valve
5. Worn out rings
1. Release safety valve
manually by pulling
outward on ring. If
condition persists
replace valve
2. Tighten fittings
3. Clean or replace
4. Replace check valve
5. Replace piston rings
Air is releasing from safety
valve continuously
1. Defect pressure switch or
improper adjustment
2. Defective safety valve
1. Check for proper
adjustment and if
problem persists replace
pressure switch
2. Replace safety valve
Oil discharge and excessive
carbon formation or
appearance of water and
oil in the air lines
1. Improper oil viscosity
2. Overfilling the crankcase
with oil
3. Restricted air intake filter
4. Carbon on exhaust
valves
5. Worn valves
6. Worn piston rings
7. High ambient
temperature and/or
humidity
8. High percentage of
running time
1. Replace oil with SAE 30
Weight non-detergent
compressor oil
2. Drain oil and fill to
proper level
3. Clean or replace filter
4. Replace
5. Replace
6. Replace piston rings
7. Install a moisture
separator and/or oil
filter
8. Check for air leakage. If
no leaks are found , you
may need an additional
compressor as your air
demand is too much for
the existing unit
Excessive noise 1. Loose valve
2. Noisy only during start
up, Check for loose belts
3. Piping loose
4. Unit operates on unlevel
surface
5. Improper grade of oil in
crankcase
6. Carbon or foreign
material on piston
7. Worn bearings
1. Inspect valve
2. Adjust for proper tension
3. Tighten bolts and nuts as
required
4. Ensure that unit is on
level surface
5. Replace oil with SAE 30
Weight non- detergent
compressor oil
6. Clean piston. Check
cylinder walls for scoring
7. Replace main bearings
maintenance
troubleshooting