Extension Cords, Preparation for Use | Bosch Power Tools CET4-20W

Fig. 4

If the safety release valve vents

under normal operating stop using the compressor

Assembly / Installation

This product is for use on a nominal 120-V circuit and has a grounding plug similar to the plug illustrated on page 8. Only connect the product to an outlet having the same configuration as the plug. Do not use an adapter with this product.

Extension Cords

Use only a 3-wire extension cord that has a 3-blade grounding plug, and a 3-slot receptacle that accepts the plug on the product. Make sure your extension cord is not damaged. When using an extension cord, be sure to use one heavy enough to carry the current your product draws.

	Extension Cord Table
0 – 25 ft		25 – 50 ft.
14 ga.		12 ga.

Recommended Sizes of Extension Cords

The maximum recommend cord length is 50 feet with a 12 gauge cord rating.

Preparation for Use

WARNING Use this compressor and all accessories in accordance with the instructions. Compressor and accessories must be used for the purpose for which they are designed. Use of the compressor for operations other than what is described in this manual can result in a hazardous situation.

ELECTRIC MOTOR

Initial Set-Up – Break-in Procedure

Before first use of this air compressor or after the

compressor pump/motor has been replaced, perform the following:

1. Ensure the power switch is in the OFF position.

This air compressor has an integrated power and pressure switch. When the power is ON the pressure switch will automatically start the compressor motor any time the tank pressure drops below the factory set cut-inpressure and stop the motor when the tank pressure stops at the factory set cut-outpressure.

2.Ensuresafetyvalveisfunctioningproperlybypulling on the valve ring and allow the valve to reset (see Fig. 4).

The safety valve is designed to protect against high pressure by releasing high pressure air from the air tank when its factory set pressure (slightly higher than the pressure switch cut-out setting) is exceeded.

WARNING

conditions,

immediately. Send your compressor for service. If the safety release valve is venting the tanks the pressure switch may need factory adjustment.

3.Plug the power cord into the correct branch circuit receptacle.

See the “Grounding Section” for more information on the correct receptacle.

4.Open the drain valve to permit air to escape the tank and prevent air pressure build up during the break-in period.

The drain valve is located on the control panel and is used to drain condensation from the tanks at the end of each use. Tank pressure is used to expel the water.

5.Move the power switch to the ON position. The compressor will start.

6.Run the compressor for 20 minutes.

7.After 20 minutes, close the drain valve. The tank will fill to cut-outpressure and the compressor motor will stop.

8.Move the power switch to the OFF position and unplug the compressor.

9.Pull the safety valve and allow to vent until tank pressure is under 20 psi.

10.Open the drain valve to permit air to escape the tank and to drain any moisture or particles from tank. When tank is empty, close drain.

11.Compressor is now ready for first use.

		Change the crankcase oil after the
	CAUTION
		first 50 hours of operation and as

recommended in the maintenance section of this manual. Failure to change oil according to maintenance schedule will reduce compressor life and performance.