Pressure
Release Valve

Pressure Release Valve: The pressure release valve located on the side of the pressure switch, is designed to automatically release compressed air from the compressor head and the outlet tube when the air compressor

reaches "cut- out" pressure or is shut off. The pressure

release valve allows the

motor to restart freely.

When the motor stops running, air will be heard escaping from this valve for a few seconds. No air should be heard leaking when the motor is running or after the unit reaches "cut- out" pressure.

Motor Overload Protector (not shown): The motor has an automatic reset thermal overload protector. If the motor overheats for any reason, the overload protector will shut off the motor. The motor must be allowed to cool down before restarting. The compressor will automatically restart after the motor cools.

Air Intake Filter (not shown): This filter is designed to clean air coming into the pump. This filter must always be clean and ventilation openings free from obstructions. See Maintenance.

How to Use Your Unit

How to Stop:

1.Set the On/Auto/Off lever to "Off".

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/Auto/Off lever is in the "OFF" position.

2.Check oil level in pump. See "Oil" paragraph in the Maintenance section for instructions.

NOTE: Pull coupler back until it clicks to prevent air from escaping through the quick connect.

3.Plug the power cord into the correct branch circuit receptacle. (Refer to "Voltage and Circuit Protection" paragraph in the Installation section of this manual.)

4.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.

5.Move the On/Auto/Off lever to "ON/AUTO" position. The compressor will start.

6.Run the compressor for 20 minutes. Make sure the drain valve is open and there is minimal air pressure build-up in tank.

7.After 20 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.

Before Each Start-Up:

1.Place On/Auto/Off lever to "Off".

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.

A15256

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Craftsman 919.728001, A15256 owner manual Before Starting, Before Each Start-Up, How to Stop