Gardner Denver Screw Air Compressor ECHQHDF

Check if the outside surface of the air filter element is 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.

Direct air blast at a slight inward angle and parallel to element pleats.

Is washing required for the element?

Is the filter media or seal at the ends damaged?

Can the element be thoroughly cleaned?

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.

Inspect for rupture, crack, or pin hole using a bright light inside the element.

Measure the pressure drop through the filter with a freshly cleaned element while the compressor is running at full load.

Is the pressure drop below three (3) inches of water?

Enter the number of times the element has been cleaned.

Has the element been cleaned six (6) times or more?

Observe if the unit loads and unloads properly

Drain the moisture trap in the control system

Is moisture noted in the oil level gauge?

Disconnect the unit from the power supply

Remove the relief plug and free the hole of hardened grease

Wipe the lubrication fitting clean

Add grease with a hand-operated grease gun

Leave the relief plug temporarily off