Goodman [A/G]PG, Service Instructions Manual

Page: 36 / 52

SERVICING
36
S-16D CHECKING GE X13
TM
MOTORS
*PG1348***1BA & *PG1360***1BA units
The GE X13 TM Motor is a one piece, fully encapsulated, 3 phase
brushless DC (single phase AC input) motor with ball bearing
construction. Unlike the ECM 2.3/2.5 motors, the GE X13
TM
features an integral control module.
Note: The GE TECMate will not currently operate the GE X13 TM
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 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.
C L G N
1 2 3 4 5
High Voltage
Connections
3/16"
Low Voltage Connections
1/4”
GE X13
TM
MOTOR CONNECTIONS
S-17 CHECKING COMPRESSOR WINDINGS
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.
S-17A Resistance Test
Each compressor is equipped with an internal overload.
The line break internal overload senses both motor current and
winding temperature. High motor temperature or current heats
the disc causing it to open, breaking the common circuit within
the compressor on single phase units. The three phase inter-
nal overload will open all three legs.
Heat generated within the compressor shell, usually due to
recycling of the motor, high current or insufficient gas to cool
the motor, is slow to dissipate, allow at least three to four
hours for it to cool and reset, then retest.