Fire Pump Phase Reversal

[princetonbrian]

Can anyone explain to me how to test fire pump phase reversal. I know NFPA requires it to be tested but can not find out how this is done.

 

[cdafd]

14.2.7.5* Phase Reversal Test. For electric motors, a test shall be performed to ensure that there is not a phase reversal condition in either the normal power supply configuration or from the alternate power supply (where provided).


A.14.2.7.5 A simulated test of the phase reversal device is an acceptable test method.

 

[DRWeig]

Start it once from each source, make sure it spins the right direction in each case...

Phase reversal will make it spin backward.

Good on ya,

Goober Dave

 

[DonPhillips]

I think the electriicans call this "bumping the motor" to check the phasing.

Don Phillips

http://worthingtonengineering.com

 

[gouveia]

It has been my experience that most fire pump controllers have a button inside the panel you can push to simulate the "phase reversal" condition. This is addition to making sure it runs in the right direction as previously noted.