© 2006
GE ECM
by Regal-Beloit
- 54 -
Indoor Blower Motors
v0.2
Reconnecting the plug
After all of the input high voltage power connections have been confirmed or
corrected turn the power off and reconnect the plug to the motor control.
-
When reconnecting the plug remember that the connector is keyed. Many
times this connector is forced in the wrong way in tight dark areas.
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Make sure that the plug is in all the way to prevent arcing. If it is not fully
connected vibration may cause the connection to be broken. When the plug is
fully inserted the latches should click on both sides. If the plug is inserted with
the correct orientation, it should slide gently all the way in until both clicks are
herd.
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Forcing the plug in the wrong way may cause irreversible damage to the
motor.
o
On the 120vac application the motor may actually run but future
damage and /or operation problems could result.
o
On the 240vac application the motor will be permanently damaged with
high voltage on the voltage doubler circuit.
Ground
It is also a good practice to make sure that the ground connection from this
connector to the main ground is good.
Where is the ground from the 5 pin plug connected?
Where is the main ground from the line power to the system connected?
If they are not together, you can check the ohms between the two connections. This
will ensure that the cabinetry between the two connections has sufficient grounding
quality. Turn the power off to the system before checking the ohms.
- The ohms reading should be 0 between the two connections.
The motor will run if not grounded properly but
this is a safety concern that must
be corrected.
There is also an optional ground wire that can be installed from one of the motor
bolts to the blower housing. If the OEM specifies this ground wire make sure it is in
place.