Porter-Cable Air Compressor Service and Adjustments, To Replace or Clean Check Valve

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		Outlet
			Tube
	Drain Tank in the Maintenance section.
2.	Unplug air compressor.	Pressure
3.	Using an adjustable wrench loosen outlet
		Relief Tube
	tube nut at air tank and pump. Carefully
				Nuts
	move outlet tube up away from check
	valve.

4.Using an adjustable wrench loosen pressure relief tube nut at air tank. Carefully move

pressure relief tube away from check valve.

5.Unscrew the check valve (turn

counterclockwise) using a 7/8" open	Check
end wrench. Note the orientation for		Nut
reassembly.	Valve

6.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	Screwdriver
check valve needs to be cleaned or	In open
replaced.	position
7. Clean or replace the check valve.	nothing is
A solvent, such as paint or varnish	visible.
	In closed position
remover can be used to clean the
check valve.	disc is visible.

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

9.Replace the pressure release tube. Tighten nut.

10.Replace the outlet tube and tighten nuts.

11.Perform the Break-in Procedure. See Break-in Procedure in the Operation section.

To Replace Regulator

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

2.Set the Auto/Off lever to "Off" and unplug unit.

3.Using an adjustable wrench remove the gauges and quick connect from the regulator.

Regulator

Gauges

Quick

Connect

22- ENG­