Porter-Cable CFBN125A, Instruction Manual

14 - ENG

A07300

To Drain Tank

1.  Set the On/Off switch to OFF (O).

2.  Pull the regulator knob out and 

turn counterclockwise to set the 
outlet pressure to zero.

3.  Remove the air tool or accessory.

4.  Pull ring on safety valve allowing 

air to bleed from the tank until 
tank pressure is approximately 20 
psi. Release safety valve ring.

5.  Drain water from air tank by 

opening drain valve on bottom of 
tank.

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.

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.

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.  Remove the hose by removing 

the hose clamp. 

NOTE: 

The hose 

clamp is not reusable. You must 
purchase a new hose clamp, see 
the Parts List Manual or purchase 
a standard hose clamp at a local 
hardware store.

SERVICE AND ADJUSTMENTS

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.

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

4.  Unscrew the check valve (turn 

counter-clockwise) using a 
socket wrench.

Check 
Valve

Hose Clamp