Question about Intex Krystal Clear Model 635 Pool Filter Pump 1500 Gph

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Intex krystal clear 1500 gph 635t filter pump runs loud for a few seconds then shuts off

HELP! Mechanically clueless mom! I have had the pump for about two years with no issues, always stored for winter. I am now trying to open my pool, and once hooked up my pump will run loudly for 10-30 seconds and then shuts off. (not breaker, properly primed, and checked outlet) If I shut it off and try to turn it back on right away nothing happens, but after about 10 min it will start... and then stop again. I have taken the side panel off and the little fan looks like it is still in good shape, but it won't turn if I lightly try to spin it (I'm not even sure it is supposed to if not on) LOL,I'm still fighting with two of the screws to take off the top plastic covering. I can not afford to replace this pump at the moment. Does anyone have any idea what could be the issue and if there is any way to, at the least, temporarily fix it until I can afford a replacement??

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  • Tiffany Morales May 03, 2013

    Oh, and for the few seconds that the pump does run the suction and output seem fine.


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  • Intex Master
  • 3,543 Answers

Need new pump

Posted on Apr 27, 2016

6 Suggested Answers

  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: Need help downsizing pool pump connection

Okay. I think I gotcha covered.

I have one mocked up here right in front of me.

Still going on the PVC pipe assumption...

- Install a PVC 1 1/2 " - 1" reducer on the new pump nipple.

- Install a short piece (nipple) of 1 1/2" PVC pipe in the reducer installed on the pump

- Install an 1 1/2" MIP adapter (PVC) on the 1 1/2 " nipple

- Screw the hose onto the threaded 1 1/2" MIP adapter.

There are several ways to do this -- the above is a good way.

Have you ever mated PVC piping/adapters with solvent? I can help you with the details of this if your unfamiliar with it...


Posted on May 29, 2009

  • 77 Answers

SOURCE: Problems with Intex Krystal Clear Model 635 Pool Filter Pump 1500

No, the pump should not be noisy. It sounds like you have picked up a foreign object in the pump housing. you may have to pull the face off to determine. OR the pump/motor is indeed defective and should be returned.

Posted on Apr 28, 2009

  • 79 Answers

SOURCE: my intex pool pump is surging and won't stay primed???

i think its pump side first as its easier to push water through a filter rarther than trying to **** it , Also the only reason it could loose its prime is through air getting in the system.

Posted on Jun 06, 2009

  • 990 Answers

SOURCE: Intex Deluxe Saltwater System & Filter Pump

Check to be sure the filter and baskets are clean, as you need proper water presure to have unit run.

Posted on Oct 03, 2009

  • 331 Answers

SOURCE: Pump and skimmer instructions on how to

Direction of flow is FROM the skimmer to the pump and back to the jet. Its easy enough to determine which hose is the "jet" hose and which is the suction hose. Put both into the water, or in a bucket and turn on the pump, find the one that is shooting out water, that's the jet hose. On these systems, filter replacement and cleaning is annoyingly frequent if you want it to work even remotely efficient.

Posted on Apr 14, 2010

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