Install Instructions

Evergreen IM Motor Power Connections

First things first: Make sure that the Evergreen motor you are troubleshooting is

the "IM" variety. The series can be seen after the word "Evergreen" on the

motor's nameplate. The "AH" series is wired very differently, and none of the

instructions included below apply to that motor.

The Evergreen manual is about 40 pages thick, and, although it's pretty

comprehensive, it is really necessary to read through it a couple of times if you

want to understand how to properly troubleshoot this type of motor. It can be

downloaded from the manufacturer's website:

https://secure.thedealertoolbox.com/p-118-evergreen-im-manual.aspx

They require you to create a login account to download the manual.

Here is a short summary of the motor's highlights:

• The motor needs three types of electrical inputs to operate! They are:

a. Either 120 V or 230 V AC POWER input (selectable by a jumper plug.)

b. A HIGH VOLTAGE SIGNAL input; it selects the HP range.

c. A LOW VOLTAGE speed selector SIGNAL input, it selects the speed.

• The motor requires all 3 of these signals - at the same time - to operate properly.

• When the motor is first installed, it executes a routine to determine which

direction it should spin. The load of the fan blower is used, so the motor should

not be installed and powered up the first time without a load. The rotation

direction is memorized for future starts; but can be changed with a 5-minute

procedure found near the back of the manual if necessary.

• The motor features a very slow circulating speed (which helps to avoid air

stratification in the conditioned space) when the high voltage POWER and the

high voltage SIGNAL are present without a low voltage SIGNAL command.

• The high voltage POWER input must remain powered at all times (except when

servicing); the high voltage SIGNAL is supposed to be switched as part of normal

cycling operation. The low voltage SIGNAL is also supposed to be switched as

part of normal cycling operation.

• The motor usually ships with the 230 V jumper (yellow) installed. If you

accidentally operate the motor on 120 V with the 230 jumper installed, the motor

will run too slowly. BUT - if you power the motor with 230 V and the 120 V jumper

(white) is installed, the motor will be destroyed.

• To properly troubleshoot this motor, it MUST have the blower and scroll

attached and secured (to provide a load.)

PAGE 1
Evergreen IM Motor Power Connections First things first: Make sure that the Evergreen motor you are troubleshooting is the "IM" variety. The series can be seen after the word "Evergreen" on the motor's nameplate. The "AH" series is wired very differently, and none of the instructions included below apply to that motor.
PAGE 2
Steps to troubleshoot on a 120 V (not 240 V) workbench: WARNING: ALWAYS DISCONNECT POWER MAINS FROM UNIT AND FROM MOTOR WHEN SERVICING! VERIFY ABSENCE OF POWER WITH YOUR METER BEFORE TOUCHING OR CONNECTING WIRES. NEVER CONNECT OR DISCONNECT WHEN LIVE BECAUSE OF POSSIBLE ARCING! 1. Make sure the white jumper is installed (near the short connector's location.) 2. Plug in the UZPH4's connector into the power socket on the motor.