Gardner Denver Screw Air Compressor ECHSHDD

Disconnect oil return to compressor tubing at tee near discharge manifold flange on top plate.

Disconnect tubing from tee on top plate to top of discharge manifold at the tee. Loosen nut on fitting at top of manifold and completely withdraw the tubing through the fitting. Loosen nut on fitting on top plate and completely withdraw the tubing through the fitting.

Disconnect all other tubing from discharge manifold.

Disconnect discharge manifold pipe union.

Remove screws holding the top plate to the oil reservoir tower. Lift top plate and the attached second-stage separator from the oil reservoir tower.

Invert top plate and second-stage separator. DO NOT REST THE ASSEMBLY ON THE SEPARATOR. Remove cap screws and washers holding second-stage separator and lift the separator from the top plate.

Lift the first-stage separator from the oil reservoir tower.

Observe if the unit loads and unloads properly

Drain the moisture trap in the control system

Is moisture noted in the oil level gauge?

Stop unit and ensure no air pressure is in the oil reservoir

Wipe away all dirt before removing the oil filler plug

Is the drained oil and/or oil filter element contaminated with dirt?

Flush the entire system reservoir, oil cooler, mixing valve, and lines if contaminated

Inspect the outside surface of the air filter element for dirt accumulation.

Is the outside surface of the element evenly coated with dirt?

Remove the wing bolt and lift off the top and filter element.

Vibrate or blow heavy dirt accumulations from the element.

Is further cleaning required with detergent and water?

Wash element with a nonsudsing household detergent and rinse with clear water.

Allow the element to dry completely before reinstalling.

Record the pressure drop through the filter

Enter the current operating hours since last service

Is the motor using higher than normal current or is there a loss of compressor delivery?

Filter Element Removal and Inspection

Loosen the retaining band clamp and remove the dust cup from the body of the filter.

Visually inspect the element in place. Is cleaning necessary?

Element Cleaning and Inspection

Unscrew the wing bolt and withdraw the element from the body if cleaning is necessary.

Soak the element in warm water with a mild nonsudsing detergent for about 15 minutes.