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How to Replace an MA-ND4 Motor

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Uploaded on Jan 7, 2011

The current version of power open / power closed motor used on our dampers is the MA-ND4. The previous two motors, the MA-ND3 and MA-ND3B are similar in design and the same instructions apply.

The replacement is ordered from an EWC Controls distributor as an "MRK" (motor replacement kit). The kit contains an MA-ND4 motor as well as brackets permitting replacement of most of our older, obsolete power open / power closed motors.

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