Porter-Cable CFBN125A, Instruction Manual

2.  Plug the power cord into the 

correct branch circuit receptacle. 
(Refer to Voltage and Circuit 
Protection paragraph in the 
Installation section of this 
manual.)

3.  Open the drain valve (counter-

clockwise) fully to permit air to 
escape and prevent air pressure 
build up in the air tank during the 
break-in period.

4. 

Move the On/Off switch to ON (I) 
position. The compressor will start.

5.  Run the compressor for 15 

minutes. Make sure the drain 
valve is open and there is minimal 
air pressure build-up in tank.

6.  After 15 minutes, close the drain 

valve by turning clockwise. The 
air receiver will fill to "cut-out" 
pressure and the motor will  stop. 

The compressor is now ready for use.

Drain Valve: 

The drain valve 
is located at 
the base of the 
air tank and is 
used to drain 
condensation at the end of each use.

Check Valve:

  When the air 

compressor is operating, the check 
valve is "open", allowing compressed 
air to enter the air tank.  When the 
air compressor reaches "cut-out" 
pressure, the check valve "closes", 
allowing air pressure to remain inside 
the air tank.

12 - ENG

A07300

Check Valve

How to Use Your Unit

How to Stop:

1.  Set the On/Off switch to OFF (O).

Before Each Start-Up:

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.  Attach hose and accessories. 

NOTE:

 The hose or accessory will 

require a quick connect plug if the 
air outlet is equipped with a quick 
connect socket.

Before Starting  

Break-in Procedure

Risk of Unsafe 
Operation. 

Serious damage may result if the 
following break-in instructions are 
not closely followed.

This procedure is required 

before

 the 

air compressor is put into service and 
when the check valve or a complete 
compressor pump has been replaced.

1.  Make sure the On/Off switch is in 

the OFF (O) position.

Drain 

Valve