Oh no, pump dying???

Katygreys

Gold Supporter
Mar 5, 2022
345
Katy, TX
Pool Size
18000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
Let the dog out tonight and didn't hear the comforting sound of my 2-speed Hayward on high speed, as it is supposed to be at this time of night. Control panel indicated it was on high speed, but it was clearly not on al all.. Cycled it to low (no response) and then off. Put it on high and it made a buzzing sound, coming from the motor. You know, the sound a big electric motor makes when it is trying to turn but cannot. Almost sounded as if it was seized. I opened the filter basked and cleaned it out; wasn't much stuff in there. And, as it's dark and I was in my PJ's, I didn't fish around to see if anything made it past the filter basket (how could that even happen anyway), but I'll look closer in the morning. . I played around and honestly don't remember the exact order of things, but I could get it to go into low...I think after cycling through high (with buzzing sound from motor).

Strangely, if I put it on Service Timed Mode (press red service button twice, and red service light blinks), then press filter button, the pump turns on high speed and sounds perfectly normal. It will also run in low if I press filter again. I tried this a few times and is repeatable. In Service Locked Mode (solid red light), the pump will not work.

I need to confirm all this, as I was just fumbling around in no systematic way. I'll do that in the morning and report back. Man I really hope the pump isn't dying. The fact that it works in Service Timed Mode seems weird though. And to be clear, the buzzing sound was 100% coming form the motor, not the PL-PS-8 box. And...I hate to throw in a potential red herring, but we did have a power flicker at around 7am today. All things equal, I assume that is unrelated...as the pump turned on during the day as it was supposed to (it runs on low from 11am-5pm, and of course it turns on at high speed at first for 3 minutes by program to "prime" I guess).

I have shut the breakers off inside the control panel and will look again tomorrow.
 
Your problem may be in the ProLogic relays that control the pump low speed and high speed operations.
 
Ok thanks. Researching...it is making the "start capacitor is bad humm". But again, the fact that it SEEMS to work when in Service Timed Mode is odd..

How would I check relays?
 
Ha ok, yes JamesW, simultaneous post! Would bad start and/or run capacitors explain it running when in Service Timed Mode??
 
OK yup got it. Just reading a post from 2021, @JamesW you have lots of excellent input in that post. I'll pop open the top and back and try to locate new caps. Neighbor has a fluke that measure uF so I'll test as well. If I find one bad I'll plan to replace both. Thanks ya'll. What a great forum.
 
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Seems like the start capacitor is just a couple microfarads below the spec (187 uF measured vs 189-227uF) so I purchased a new one and will go ahead and replace that as well. Here is the measurement of the brand new one which seems to be a little bit above spec, but I think that’s ok.

IMG_1118.jpeg
 
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Both caps should be swapped out within the hour. By the way…how do I test the relay in the back of the pump and the ones in my prologic box??
 
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Well, victory was short-lived. I installed both capacitors before putting the cover on both the top and the back, I turned the pump on, and it worked fine and both high and low speed. Perfect. Problem solved.

Then I shut the breakers off and installed both covers. Then flipped the breaker back on and the pump came on it sounded horrible. So I pushed the filter button to power it off. Then powered it on again and it made a pop sound and a few sparks came out of the back on the far side, where the power conduit comes in.

I took off the back cover, inspected everything and noticed that a two of the terminal connections were loose. I pulled them off, squeeze them a bit with some needle nose pliers and reinstalled them tightly. Pump works now but making very loud noise.

It worked perfectly with the covers off. See attached pics and vid. Any thoughts?




IMG_1125.jpeg
 
Sounds like bad bearings.

The wires might have been snagged by the centrifugal switch weights as they swung out.

The weights swing out and the rotating weights can catch on any wires left in the path.
 

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