Hayward Super Pump - Strange Noise When Start

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xavier56

In The Industry
May 20, 2022
11
NY
Hello All,

I have 40 years of working on all kinds of Equipment so have a lot experience.

Been rebuilding Pool Pumps for 5 years and never seen this.

Cannot figure out what the cause is. Wondering if any one else ever seen this issue come up.

I am working on a Hayward Super Pump 1 1/2 Hp - New Motor Bearings and Seal installed

You start and run motor not installed on Hayward Housing runs fine.

Even with Impeller and cover installed.

If you install the motor ( with all front end parts) and tighten the four holding long bolts on the Pump Housing,

The motor will make a loud noise on startup and then quiets and runs fine.

I have change all Hayward parts in front of motor with another Super Pump still does it.

I found if tighten three holding bolts one by one I can get it to run Quiet

When I hand tighten the fourth bolt just a little it makes the noise right away.

Also does not matter which pattern you tighten the bolts still does this.

I have looked and looked and cannot find what the issue to cause this.

Any help or thoughts or ideas would be appreciated,

Thank you
 
The only thing I can think of is that somehow the motor shaft is somehow canted just enough to cause the wet & dry ends to not align perfectly resulting in the noises once assembled. Maybe a stretch, but given everything else you've done, the motor shaft seems to be the only think not changed. :scratch:
 
Thank you for email -

This is very Bizarre what is happening. The Noise sounds like the Capacitor is bad on startup when you get that hum.

But the Motor Starts Fine and Runs Perfect when at Full Speed. Runs Quiet.

When I tighten that third bolt by hand the noise starts. Loosen and no noise on start up.

I even took motor apart again and checked New Bearings and Clearance on windings to rotor.

This one has me Really Stumped.

I could use as is since runs fine at speed

Just now it has become a mission to find what is causing this noise issue.

Thanks
 
Might also be a warped volute - the wet-end housing may be warped internally.
Or a warped/mis-aligned impeller or impeller diffuser.
 
Yes the Four Long Bolts - with 3 tight runs Ok - when just hand tighten the fourth this happens.

Any does not matter which bolts get tight. I thought maybe related to a certain bolt location.

So tried tighten in different patterns. No luck

And I am talking just hand tight

I have changed the whole front end with another Hayward Super Pump.

Still does it also changed Main Seal with another new one too.

Thought could be realted to the Super Pump Parts so change all with another one.
 
Can you upload Videos here? Maybe can take one of the two different runs. with and without fourth bolt tight.

On Motor changed Bearings. Pump new seal.

Do not see anything rubbing. Changed Whole front end and impeller with new one.

Still does it.

I have rebuild 100's of these pumps and never run into this.

I have looked and looked for anything and cannot find a issue

Even change Capacitor just in-case related to that.
 

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In 1983, the model was changed from SP1600 to SP2600 and some of the parts are different.

Generic Super Pump™ Style Drive Train UpGrade Kit 1.5 HP - 5110-53 - INYOPools.com

Super Pump SP1600X- Series Drive Train UpGrade Kit 1.5 HP - SPX2610CKIT
www.inyopools.com www.inyopools.com

NOTE: For pumps with an “SP1600X–” part number (manufactured before 1983), the use of these new kits (SPX2600CKIT – SPX2615CKIT) will upgrade the old pump to our current “SP2600X–” series.

All individual components included in the kits are not available.

 
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The two pumps that have here are the same pumps. With same part numbers. Did not mix them up.

Changed the whole pump with other one all parts.

This happen to the original pump and the second pump was the same model.
 
Pictures and video might help.

What is the exact pump model number?

Are any of the brass grommets loose?

What is the motor model number?

Is the seal installed correctly?

Sometimes a part of the seal does not come out and that can cause a problem.
 
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Just to clarify the long bolts being probably 9 in or better through the housing correct? If so are you able to bench test the motor with the seal plate off?
 
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