5.Drain water from air tank by opening drain valve on bottom of tank.

Risk of Bursting. Water will condense in the air tank. If not drained, water will corrode and weaken the air tank causing a risk of air tank rupture.

Risk of Property Damage. Drain water from air tank may contain oil and rust which can cause stains.

6.After the water has been drained, close the drain valve. The air compressor can now be stored.

NOTE: If drain valve is plugged, release all air pressure. The valve can then be removed, cleaned, the reinstalled.

SERVICE AND ADJUSTMENTS

ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE PERFORMED BY TRAINED SERVICE TECHNICIAN.

Risk of Unsafe Operation. Unit cycles automatically when power is on. When servicing, you may be exposed to voltage sources, compressed air, or moving parts. Before servicing unit unplug or disconnect electrical supply to the air compressor, bleed tank of pressure, and allow the air compressor to cool.

TO REPLACE OR CLEAN CHECK VALVE

1.Release all air pressure from air tank. See "To Drain Tank" in the Maintenance section.

2.Unplug unit.

3.Loosen the nut on the outlet tube and move the outlet tube to the side.

4.Unscrew the check valve (turn counterclockwise) using a 7/8" open end wrench. Note the orientation for reassembly.

5.Using a screwdriver, carefully push the valve disc up and down. NOTE: The valve disc should move freely up and down on a spring which holds the valve disc in the closed position; if not the check valve needs to be cleaned or replaced.

6.Clean or replace the check valve. A solvent, such as paint or varnish remover can be used to clean the check valve.

7.Apply sealant to the check valve threads. Reinstall the check valve (turn clockwise).

8.Replace the outlet tube and tighten nuts.

9.Perform the Break-in Procedure. See "Break-in Procedure" in the Operation section.

Outlet Tube

Nut

Check

Valve

Check Valve

Screwdriver

In open position nothing is visible.

In closed position disc is visible.

1000002853

14 - ENG

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Porter-Cable 1000002853 instruction manual Service and Adjustments, To Replace or Clean Check Valve