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.

Check 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.

Pressure

Release

Valve

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.

HOW TO USE YOUR UNIT

How to Stop:

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

Before Starting

Do not operate this unit until you read

and understand this instruction manual for safety, operation and maintenance instructions.

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

Before Each Start-Up:

1.Set the 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.

13 - ENG

A17883

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Craftsman 919.167321 owner manual How to Stop, Before Starting, Before Each Start-Up, Pressure Release Valve
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919.167321 specifications

Craftsman 919.167321 is a powerful and versatile air compressor designed for both professional and DIY enthusiasts. This model boasts a host of features that make it an ideal choice for a wide range of applications in workshops, garages, and home improvement projects.

One of the standout features of the Craftsman 919.167321 is its robust 6-gallon tank, which allows for extended usage between refills. The horizontal design of the tank provides stability and makes it easier to store without taking up much space. With a maximum pressure of 150 PSI, this compressor delivers a strong and consistent airflow, making it suitable for inflating tires, powering pneumatic tools, and completing various home improvement tasks.

The motor of the Craftsman 919.167321 is designed to be incredibly efficient, ensuring quick recovery times and reduced noise levels. Operating at a decibel level that is quieter than many compressor models on the market, users can work comfortably without excessive noise pollution. The oil-free pump further enhances this convenience, requiring minimal maintenance while providing durability and longevity.

In terms of portability, the Craftsman 919.167321 features a sturdy handle and lightweight construction, allowing it to be moved easily from one job site to another. Its compact design makes it a perfect fit for those with limited space, whether in a home garage or professional workshop.

The compressor is also equipped with a set of quick couplers, which allow for easy connection to various pneumatic tools. This feature minimizes downtime during projects, enabling users to switch tools efficiently without hassle.

Safety is another priority with the Craftsman 919.167321. The unit includes a thermal overload protection feature that prevents the motor from overheating during extended use. Additionally, users will appreciate the built-in pressure gauge and regulator, which allow for precise control over the airflow and pressure settings.

Overall, the Craftsman 919.167321 air compressor stands out as a reliable option for anyone in need of a powerful, portable, and user-friendly compressor. With its efficient motor, quality construction, and practical features, it is designed to meet the diverse demands of various tasks while ensuring user satisfaction and safety. Whether you are inflating, nailing, or powering tools, the Craftsman 919.167321 is a smart addition to your toolkit.
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