Gardner Denver Screw Air Compressor EBE_FH

Warning: Operating conditions determine frequency of service.

Is the 'CHANGE AIR FILTER' message displayed?

If the 'CHANGE AIR FILTER' message is displayed, air filter requires servicing or changing.

Check the condition of the heavy-duty air filter

The air filter must receive proper maintenance if maximum service is to be obtained from the unit.

Has the air filter been properly maintained?

Establishing adequate and timely filter service is MOST IMPORTANT.

Has adequate and timely filter service been established?

An improperly maintained air filter can cause a loss of compressor air delivery.

Check the reservoir oil level – add oil if required. See Section 5, page 36. If oil consumption is high, refer to “Excessive Oil consumption, page 38.

Observe if the unit loads and unloads properly.

Drain the moisture trap in the control system. See Section 4, page 15.

Check Panel LED’s for advisories.

Sign off on the 8 Hourly Compressor Maintenance

Warning: Ensure the unit is completely off and no air pressure is in the oil reservoir before starting the procedure

'CHANGE SEPARATOR' message displayed?

If 'CHANGE SEPARATOR' message is displayed, proceed with the following steps

Disconnect, tag and lockout power supply to the starter

Power supply disconnected, tagged and locked out?

Remove screws holding the top plate to the separator housing. Lift the top plate from the separator housing

Top plate removed successfully?

Lift the separator from the separator housing

Warning: The following readings are based on ambient temperature of 80 F (27 C) with the system in good condition. The compressor should be at operating temperature at the time of the checks. One–half hour of loaded operation is usually sufficient to reach level–out operating temperatures.

Air and Oil Discharge Temperature – Read at the gauge on the instrument panel or check with a thermometer at the discharge housing.

Compressor Oil Inlet Temperature – Install a tee at the oil filter outlet and check with a thermometer.

Oil Inlet Pressure – Check at the fitting in the line near the compressor oil inlet. With air receiver pressure at 100 psi (6.9 Bars), oil inlet pressure should be 65–75 psig (4.5 to 5.2 Bars).

Oil Cooler Oil Pressure Differential (Air–Cooled Radiator) – Check differential across the oil system by measuring oil inlet pressure as described above.

Oil Cooler Temperature Differential (Air–Cooled Radiator) – The oil temperature differential depends on the temperature of the air at the oil cooler fan and cleanliness of the core faces. As ambient temperatures and core restrictions increase, the oil cooler outlet temperature will increase.

The oil inlet temperature is approximately the same as the air discharge temperature – see the gauge on the instrument panel.

The outlet oil temperature may be checked by installing a tee at the oil filter outlet.

Sign off on the compressor oil system check

WARNING: Rotating machinery can cause injury or death. Open main disconnect, tag and lockout power supply to the starter before working on the electric motor.

Disconnect, tag and lockout the unit from the power supply

Remove the relief plug and free hole of hardened grease

Wipe lubrication fitting clean and add grease with a hand–operated grease gun

Leave the relief plug temporarily off. Reconnect unit and run for about 20 minutes to expel the excess grease

Stop the unit. Replace the relief plug

Sign off on the motor lubrication procedure