Psc Fan Motor Wiring Diagram

The evergreen mfr distributor says the following.

Psc fan motor wiring diagram. I know a homeowner who runs the fan on his ruud ubhc 17j11nfd air handler 2 5 ton heat pump continuously in the summer to help keep the temperature a bit more consistent between the upstairs and downstairs so he figures swapping the oem psc fan motor for an ecm motor such as the evergreen might pay for itself. The motor then runs using only the run winding. A psc motor uses a capacitor a device that can store and release electrical charge in one of the windings to increase the current lag between the two. Jesse grandbois submitted this tech tip to help make it simple.

Refer to the motor manufacturer s data on the motor for wiring diagrams on standard frame ex e ex d etc. Finally this guide is intended to be used as a general overview of common condenser unit wiring schematics. After a split phase or cap start motor is started a centrifugal switch on the shaft opens disconnecting the start winding or capacitor. For a visual picture of typical wiring configurations reference the following guide.

This one is about psc motor speeds and how they are wired for hvac fan applications. Blower motor wiring diagram blower motor resistor wiring diagram blower motor wire diagram hvac blower motor wiring diagram every electric arrangement consists of various distinct parts. Otherwise the structure won t work as it should be. See the simplified circuit diagram on the following page.

These diagrams are current at the time of publication check the wiring diagram supplied with the motor. Bodine stock motors and gearmotors will have black blue black yellow blue yellow motor leads and a green yellow ground lead. Each component should be set and connected with other parts in specific way. This video is part of the heating and cooling series of training videos made to accompany my websites.

I go over the recognized fan motor color code for speeds and spade terminal care. Inst maint wiring qxd 5 03 2008 10 02 am page 6. How to wire a condensing fan motor for 3 vs. Some condenser fan motors wire to a circuit board while others use proprietary plugs for their connectors.

4 wires is a common question by new techs. Identify the wire colors and confirm that you have a 4 wire reversible psc permanent split capacitor motor or gearmotor. This is a quick one on the difference between wiring universal condenser fan motors and why brown white is the same wire as white. This test will help you find out which speed a wire is on any psc blower motor.