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Why doesn't the water pump start?

  • 08-04-2013 10:54pm
    #1
    Registered Users, Registered Users 2 Posts: 219 ✭✭


    I have a Grundfos High Head Circul Pump Model UPS 25-50. When I plug it in, it doesn't start (stand alone on the work bench - not connected to any plumbing - no water involved!!). Does such a pump have a pressure switch? The wiring looks OK and the spindle turns freely by hand so it's not binding. The capacitor looks OK - it shows a reading on a meter (I think). Any suggestions appreciated please.
    Ger.


Comments

  • Registered Users, Registered Users 2 Posts: 1,884 ✭✭✭Robbie.G


    gerdalt wrote: »
    I have a Grundfos High Head Circul Pump Model UPS 25-50. When I plug it in, it doesn't start (stand alone on the work bench - not connected to any plumbing - no water involved!!). Does such a pump have a pressure switch? The wiring looks OK and the spindle turns freely by hand so it's not binding. The capacitor looks OK - it shows a reading on a meter (I think). Any suggestions appreciated please.
    Ger.

    The pump doesn't have a pressure switch its a basic set up capacitor and motor so if you testing the capacitor and your getting the right reading for the capacitor then it has to be the motor.


  • Closed Accounts Posts: 2,097 ✭✭✭Dtp79


    gerdalt wrote: »
    I have a Grundfos High Head Circul Pump Model UPS 25-50. When I plug it in, it doesn't start (stand alone on the work bench - not connected to any plumbing - no water involved!!). Does such a pump have a pressure switch? The wiring looks OK and the spindle turns freely by hand so it's not binding. The capacitor looks OK - it shows a reading on a meter (I think). Any suggestions appreciated please.
    Ger.

    What way are you reading the capacitor on your meter?


  • Registered Users, Registered Users 2 Posts: 219 ✭✭gerdalt


    Thank you for those suggestions and information about the pump.
    I checked the capacitor on a digital voltmeter - it read 1.5mF against a 2mF rating so not likely the problem.
    Now listen up:
    I am an expert in electronics and things electrical - I thought.
    So I am about to bin the pump when as a very last resort I decide to check the fuse in the plug. Yes, I said the fuse.
    The embarrassment of it all. :o:o:o:o:o:o:o:o

    The pump is working just fine.

    Apologies for wasting your time. :)


  • Closed Accounts Posts: 2,097 ✭✭✭Dtp79


    gerdalt wrote: »
    Thank you for those suggestions and information about the pump.
    I checked the capacitor on a digital voltmeter - it read 1.5mF against a 2mF rating so not likely the problem.
    Now listen up:
    I am an expert in electronics and things electrical - I thought.
    So I am about to bin the pump when as a very last resort I decide to check the fuse in the plug. Yes, I said the fuse.
    The embarrassment of it all. :o:o:o:o:o:o:o:o

    The pump is working just fine.

    Apologies for wasting your time. :)

    Sometimes it's the simplest things!


  • Registered Users, Registered Users 2 Posts: 8,565 ✭✭✭K.Flyer


    Do feel so bad, I had a call out to one that just needed to be switched on at the switched spur. (ok, the spur was out of sight behind the cylinder, but still...)


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