Two Speed Blower Motor Wiring

Two speed electric motors operate in one of two ways.

Two speed blower motor wiring.

We will go over which speed each wire color is an. These diagrams are current at the time of publication check the wiring diagram supplied with the motor. From what i can see looks like on the old motor. Later models had a 3 speed.

It has four terminals. 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. The other wire should go to blower switch terminal 2. Two speed motors with 2 separate windings dual winding high speed red leads red leads black leads black leads m 3 single speed only 3ø wiring diagrams u1 red v1 yellow w1 blue thermal contacts tb white l1 l2 l3 n e codes.

Inst maint wiring 5 qxd 20 11 2015 11 37 am page 6. Http amzn to 2eybrx1 emergency stop switch. 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. Black high speed yellow medium high orange medium low red low speed.

However the wiring to the motor is the same. According to the new motor white l1 neutral black high speed blue medium speed red low speed. What speed on the switch are you running. You should have a 2 speed switch.

Refer to the motor manufacturer s data on the motor for wiring diagrams on standard frame ex e ex d etc. Proper wiring to switch is a must and also be sure proper switch is installed. If the blower is using a multi speed motor the settings will be labeled as high medium and low. 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.

One terminal is the ground another common. Tester101 nov 1 15 at 3 43. 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. The right motor should have 12 volts to it on the double red wire at alll times even with blower switch off.

Http amzn to 2ep7g5p here is a video on how to.