You might have bad bearings or maybe something stuck in the impeller.
Noise at pump after cleaning filter cartridges
- Thread starter JessM
- Start date
I am going to replace both of them - new knobs, new o-rings, and new Magic Lube on it's way. Should I avoid running the pump in the meantime? Does that noise sound more like bearings than cavitation?
Depends on how bad the leaks are and if the water is getting to the bearings.
Hard to tell.
Sounds like maybe bearings to me or maybe something in the impeller.
How old is the pump?
It's on its second season.
Is the bond wire the same as the grounding wire? I don't know where that it, but I know the electrician and I talked about him grounding the equipment. I'll check that out too.
Bonding vs Grounding
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I found an installation manual for your pump - see link Refer to Installation Heading (pg 1) and subsection PIPING point #6
Below is the specific wording (from pt #6) regarding plumbing to the inlet of the pump.
For most installations Pentair recommends installing a valve on both the pump suction and return lines so that the pump
can be isolated during routine maintenance. However, we also recommend a valve, elbow or tee installed in the suction line
should be no closer to the front of the pump than five (5) times the suction line diameter.
Example: A 2 inch pipe requires a 10 inch (25.4 cm) straight run in front of the suction inlet of the pump. This will help the pump
prime faster and last longer.
Note: Do not install 90° elbows directly into the pump inlet or outlet
The operations manual I linked earlier also shows a full parts list, disassemble & assembly instructions. You would need to verify your model number to select the right parts. So if you are up to it, and as suggested by others, you may need to change out the seal and bearings or have someone do it for you.
There's plenty of room for correction. Turn the filter clockwise 90 degrees. Turn the pump counter clockwise 90 degrees so that the suction has a straight run into the pump adding 12 inches. Rotate the filter/waste valve 180 degrees and pipe the pump outlet that way and still leaves you plenty of room for a future SWCG.
One additional item - put a union before and after the pump which will make any future maintenance easier to remove the pump for servicing or storage(if needed).
I say after the pump is good, before the pump is just another place for a suction side air leak.
In my opinion, the 90 issue is not a big deal.
Plenty of pumps are plumbed that way with no issues.
Follow the manufacturer's instructions to keep them happy, but my opinion is that it is irrelevant.
Plenty of pumps are plumbed that way with no issues.
Follow the manufacturer's instructions to keep them happy, but my opinion is that it is irrelevant.