Results 1 to 5 of 5

Thread: Fire pump troubleshooting

  1. #1
    Associate Engineer
    Join Date
    May 2018
    Posts
    3

    Fire pump troubleshooting

    We conducted maintenance on a fire pump and we found out that the motor of the pump is running at a high ampere rating exceeding it's rated amperage stated in the name plate.
    is it advisable to throttle the suction line in order to meet the rated ampere?
    thanks

  2. #2
    Principle Engineer Cragyon's Avatar
    Join Date
    Feb 2013
    Location
    Newark, NJ
    Posts
    197
    High Amperage would mean high load or a failing motor. You need to determine what is causing the high current flow and determine what needs to be done not work around it.

    I assume that the equipment needs to NOT fail when fighting a fire.

  3. #3
    Associate Engineer
    Join Date
    May 2018
    Posts
    3
    Does the insulation resistance of the motor also matters?
    The data for insulation resistance = 160mega ohms
    the vibration data are good, the bearings are good.

  4. #4
    Administrator Kelly Bramble's Avatar
    Join Date
    Feb 2011
    Location
    Bold Springs, GA
    Posts
    2,219
    Quote Originally Posted by edut_calimz View Post
    Does the insulation resistance of the motor also matters?
    The data for insulation resistance = 160mega ohms
    the vibration data are good, the bearings are good.
    What does the motor manufacturer specifications indicate?
    Tell me and I forget. Teach me and I remember. Involve me and I learn.

  5. #5
    Associate Engineer
    Join Date
    May 2018
    Posts
    3
    In the name plate:
    3ph, 440v, 60amps
    actual data:
    v: 435,433,436 volts
    I: 80amps
    ir: 160, 160, 160 megaohms
    .
    the rated resistance is not indicated in the nameplate

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •