Harbor Freight Tools 40211 operating instructions Air Inlet #6 Air Outlet #7

Installation (continued)

Note: We recommend that a bypass valve (not included) be added between the

Air Inlet (#6) and the Air Outlet (#7) for applications when the Air Dryer is not needed.

The bypass valve must be installed by a plumber or an authorized service technician. See FIGURE 1.

Bypass Valve

FIGURE 1

Air Inlet (#6)	Air Outlet (#7)
Shut-off	Shut-off

Compressor Air Dryer

Note to professional installer: The shut-offs (not included) for both the air inlet and air outlet, must be plumbed below the horizontal piping containing the bypass valve. See FIG- URE 1.

Using the bypass valve (not using the Air Dryer).

If you do not wish to use the Air Dryer with a certain application follow these steps:

1.Turn off and unplug the compressor and the Air Dryer.

2.Engage the shut-off valves, closing both of the air inlets.

3.Open the bypass valve.

4.Plug in and turn on your compressor and you’re ready to work without the Air Dryer.

Using the Air Dryer without the bypass valve.

1.Before plugging in the compressor or the Air Dryer, open both of the shut-off valves.

2.Close the bypass valve.

3.Plug in and turn on the Compressor and Air Dryer.

Electrical Installation

Instructions for the following wiring diagram are on page 6.

FIGURE 2

Electrical Cord

Pre-wired at the factory

Green (Hot)	Black (Neutral)	Green/ White (Ground)
Black (Hot)	White	Green (Ground)

REV 01/03

SKU 40211 For technical questions, please call 1-800-444-3353. Page 5