Service Manual

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SERVICING

S-16D CHECKING EEM (ENERGY EFFICIENT

MOTOR) MOTORS

The EEM Motor is a one piece, fully encapsulated, 3 phase

brushless DC (single phase AC input) motor with ball bearing

construction. The EEM features an integral control module.

Note: The GE TECMate will not operate the currently used

EEM motor.

1. Using a voltmeter, check for 230 volts to the motor connec-

tions L and N. If 230 volts is present, proceed to step 2. If

230 volts is not present, check the line voltage circuit to

the motor.

2. Using a voltmeter, check for 24 volts from terminal C to

either terminal 1, 2, 3, 4 or 5, depending on which tap is

being used, at the motor. If voltage is present, proceed to

step 3. If no voltage, check 24 volt circuit to motor.

3. If voltage was present in steps 1 and 2, the motor has failed

and will need to be replaced.

Note: When replacing motor, ensure the belly band is between

the vents on the motor and the wiring has the proper drip loop

to prevent condensate from entering the motor.

LGN

123

High Voltage

Connections

3/16"

Low Voltage Connections

1/4”

EEM MOTOR CONNECTIONS

S-17 CHECKING COMPRESSOR WINDINGS

WARNING

HERMETIC COMPRESSOR ELECTRICAL TERMINAL

VENTING CAN BE DANGEROUS. WHEN INSULATING

MATERIAL WHICH SUPPORTS A HERMETIC COM-

PRESSOR OR ELECTRICAL TERMINAL SUDDENLY

DISINTEGRATES DUE TO PHYSICAL ABUSE OR AS A

RESULT OF AN ELECTRICAL SHORT BETWEEN THE

TERMINAL AND THE COMPRESSOR HOUSING, THE

TERMINAL MAY BE EXPELLED, VENTING THE

VAPOR AND LIQUID CONTENTS OF THE COMPRES-

SOR HOUSING AND SYSTEM.

If the compressor terminal PROTECTIVE COVER and gasket

(if required) is not properly in place and secured, there is a

remote possibility if a terminal vents, that the vaporous and

liquid discharge can be ignited, spouting flames several feet,

causing potentially severe or fatal injury to anyone in its path.

This discharge can be ignited external to the compressor if the

terminal cover is not properly in place and if the discharge

impinges on a sufficient heat source.

Ignition of the discharge can also occur at the venting terminal

or inside the compressor, if there is sufficient contaminant air

present in the system and an electrical arc occurs as the ter-

minal vents.

Ignition cannot occur at the venting terminal without the pres-

ence of contaminant air, and cannot occur externally from the

venting terminal without the presence of an external ignition

source.

Therefore, proper evacuation of a hermetic system is essen-

tial at the time of manufacture and during servicing.

To reduce the possibility of external ignition, all open flame,

electrical power, and other heat sources should be extinguished

or turned off prior to servicing a system.

If the following test indicates shorted, grounded or open wind-

ings, see procedure S-19 for the next steps to be taken.