Question about Little Giant 360 Pony Pump Series Non-Submersible Self-Priming Transfer Pumps

1 Answer

Makes a buzzing noise but pumps no water

My pony pump has suddenly stopped pumping, should I open it up and see? what am I looking for? Full rain barrels and no pump :-( Thanks! SJ

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  • Brad Brown Jul 18, 2013

    The screws on the front of the unit where the hoses attach are what you remove. Then the front plate comes off and you can see the parts that move. The repair parts are here but you should see if the turn by hand first. The unit is only designed to work 15 minutes an hour.http://www.little-giantpump.com/555103_p...

  • Sraj Jul 19, 2013

    Thank you sooo much, yes the part inside was broken. I can turn the shaft by hand. So if I get the replacement part and replace it hoopefully it should work. Fingers crossed. Thanks again Brad

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  • Little Giant Master
  • 15,645 Answers

You need to take it out and see if the impellor is stuck or if the motor is stalled.

Posted on Jul 18, 2013

  • Sraj Jul 18, 2013

    Silly I know... but I have no idea how to open it. It looks like one sealed unit. I have taken a couple of screws out but the body of the pump looks sealed.

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Question not 100% clear.

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Add a comment for more help.

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1 Answer

Pump not working-delay in hot water delivery.In the past,a vibration occurred when cold water running above the pump.Can this be repaired.Power operating to pump. Thanks, mel ross


Question not 100% clear.

1) The pump is not working? Does the pump make a noise? if pump is not working full-time, it can cause delay in arrival.
If pump motor is suspect, and outlet has power, then check override switch located on timer. Set override to Timer, move some of the trippers outward, then manually rotate timer dial until pump turns ON.
http://waterheatertimer.org/images/IMG_9325-grundfos-timer-800.jpg
If no noise is detected, or noise stops and starts, or seems strained, or if pump is hot, then pump motor may have burned out.

2) If pump is working, and makes noise like a humming sound, and pump motor is not hot, but hot water is not circulating, then unplug pump so it will not overheat and burn up.
Disassemble the pump and cross-over piece. Clean piping with white vinegar or CLR. Do not soak in CLR or it will damage seals. Rinse parts thoroughly. Reassemble and see if problem is resolved.
If pump is vibrating, then suspects include sediment and/or air inside line, and this can be resolved by cleaning as described. Also install air vent to increase life of pump.

3) Other causes for hot water delay at faucet are crossover.
Crossover can be caused by bad single-handled faucet cartridge, and/or by clogged-or-failed check valve on cross-over piece on grundfos.
This type of problem lets cold water enter hot line, and causes delay in arrival of hot water. Clean-or-replace the grundfos cross-over piece, and replace bad faucet cartridge.
Open following link for testing instructions:
http://waterheatertimer.org/Crossover.html

Resources:
http://waterheatertimer.org/Water-heater-recirculation-system.html
http://waterheatertimer.org/pdf/Troubleshoot-recirculation.pdf

Add a comment for more help.

Take a moment and rate answer for accuracy:
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

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