Two Speed Blower Motor Wiring

One terminal is the ground another common.

Two speed blower motor wiring.

We will go over which speed each wire color is an. Proper wiring to switch is a must and also be sure proper switch is installed. Two speed electric motors operate in one of two ways. Inst maint wiring 5 qxd 20 11 2015 11 37 am page 6.

By connecting the proper wires to the high and low speed terminals on the motor and switch you can control how fast or slow it turns once powered up. Using the wiring diagram for the unit that holds the blower motor it will be possible to identify the fan relay as well as the various speed terminals and terminal locations if the motor is multi speed. If you are working on two speed motor wiring you will need an ac power supply the two speed motor and a double pole double throw switch. Refer to the motor manufacturer s data on the motor for wiring diagrams on standard frame ex e ex d etc.

According to the new motor white l1 neutral black high speed blue medium speed red low speed. Http amzn to 2ep7g5p here is a video on how to. Diagram dd4 low speed low speed u1 u1 v1 v1 w1 w1 u2 u2 v2 v2 w2 w2 l1 l1 l2 l2 l3 l3 e e high. The right motor should have 12 volts to it on the double red wire at alll times even with blower switch off.

Black high speed yellow medium high orange medium low red low speed. 4 position rotory switch. You should have a 2 speed switch. However the wiring to the motor is the same.

Check the diagram on the old motor to figure out which wires are which. From what i can see looks like on the old motor. It has four terminals. These diagrams are current at the time of publication check the wiring diagram supplied with the motor.

Tester101 nov 1 15 at 3 43. Two separate windings designed to rotate the motor at two different speeds or inbuilt resistors which alter the voltage supplied to windings. Later models had a 3 speed. Http amzn to 2eybrx1 emergency stop switch.

The other wire should go to blower switch terminal 2.