How to fix pondmaster pump-help!

kashka_kat(z4 WI)June 18, 2011

Could use someone's help ASAP - this new pump(Pondmaster 1200 gph mag) already is vibrating and making bad sounds -It's possible some junk is stuck inside - I did pull out a few strands of something. On the other hand it could be the impeller is broken because it had kind of a rattling sound.

Can I open it up to take a look? There's all the screws on the one side - do I just unscrew those? Just need to be 100% sure I know what I'm doing before taking anything apart! Not finding any manuals or anything online....

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mike_il(WChi)

Kashka Kat,

Yes there are screws on the intake of the pump. Once the screws are removed pull the volute off carefully. It may stick a little and if it does pull it off straight. Pull the Impeller out straight. If the shaft is broken half the shaft will come out when removing the volute. Clean it out and reassemble.
Mike

    Bookmark   June 18, 2011 at 2:23PM
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kashka_kat(z4 WI)

Thanksmuch. I kind of thought so... but didnt want to risk electrocuting myself.

    Bookmark   June 19, 2011 at 1:00PM
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kashka_kat(z4 WI)

BTW, is it normal for this pump to have kind of a loud vibration and buzzing sound. This is a 1200 gph model, larger than my old 500 gph model (the one thats 10 yrs old and still going). You can feel some vibration from the old one but nothing like this new one. C

    Bookmark   June 19, 2011 at 1:15PM
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mike_il(WChi)

Yes it will have more vibration than a smaller pump just because the magnets are larger. The only thing I don't like about the 1200 is that there is a flow line in the molding of the volute that runs up the side to the threaded intake. Which is not a problem if you are using it as a submersible but the volute can crack if using as an external.
Mike

    Bookmark   June 19, 2011 at 2:13PM
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kashka_kat(z4 WI)

OK I went inside and that skinny little white plastic shaft was broken. I am not surprised! I have to wonder at the design of this thing if such a flimsy little plastic piece is supposed to hold up under heavy use.

Or is it by design - the shaft breaks when something gets clogged inside, instead of wrecking the motor??

In any event the reviews I read had a lot about this thing breaking - sometimes for no reason at all. Makes me wonder if the quality has gone down or they want to make more $$$ selling replacement parts.

    Bookmark   June 20, 2011 at 10:38AM
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erniem

I've had pondmaster pumps for years now and have no complaints. I even use one in my small hot tub!

If something worked its way into the pump then it is to be expected it will break. The good news is they sell all the replacement parts just for this case; cheaper pumps you just toss out.

The even better news is you can play dumb and try to return it where you just bought it. I think the manufacturer's warranty is 3 years if you have the receipt.

    Bookmark   June 20, 2011 at 12:21PM
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kashka_kat(z4 WI)

Well I got the replacement impeller - and there is this a bit of a defect on the round magnet part - a rough ridge about 1/2 inch long that kind of sticks out a little. Its not perfectly smooth like the old one is.

Not sure it sticks out far enough to be a problem but I'm not sure I want to put it in my pump to find out....

On the other hand... not sure I want to pay the return postage either.... bummer.

    Bookmark   June 24, 2011 at 2:27AM
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sandyl(Zone 6B -7)

I had a 8 year old 3600 gph pondmaster pump that I had to replace the impeller last year and it ran for a little over a year after I replaced the impeller and died two weeks ago. I love the pondmaster pumps and probably will not own any other. I am currently using the 2400 gph pondmaster since they don't make the 3600 GPH any longer, which I think is a bummer. The key to the life of these or any pump is to make sure nothing but liquids go throught the pump.. Pebbles and or small rocks that the fish spit around go into the pump and the impeller will break everytime. Pebbles and pumps don't mix.

    Bookmark   June 24, 2011 at 9:57AM
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sandyl(Zone 6B -7)

I had a 8 year old 3600 gph pondmaster pump that I had to replace the impeller last year and it ran for a little over a year after I replaced the impeller and died two weeks ago. I love the pondmaster pumps and probably will not own any other. I am currently using the 2400 gph pondmaster since they don't make the 3600 GPH any longer, which I think is a bummer. The key to the life of these or any pump is to make sure nothing but liquids go throught the pump.. Pebbles and or small rocks that the fish spit around go into the pump and the impeller will break everytime. Pebbles and pumps don't mix.

    Bookmark   June 24, 2011 at 10:00AM
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kashka_kat(z4 WI)

Yeah it's great that it's repairable - just wish I had some local place I could buy from.

This vendor wants a picture of the "defect" - I don't have a digital camera. Is this normal that you have to provide evidence before returning something? So much for the "customer is always right" (yeah, I know that dates me as an OLD person LOL.)

Is this something you'd want to take a chance on - putting this in your pump?

    Bookmark   June 24, 2011 at 5:13PM
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jean001a(Portland OR 7b)

Perhaps a friend/neighbor/relative could take the picture for you.

    Bookmark   June 25, 2011 at 11:25PM
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mike_il(WChi)

One thing you didn't say was how old the broken pump is? I am thinking that the only thing that is wrong with the broken impeller is a broken shaft. So if the new impeller doesn't work you can take the new shaft out of the new impeller and replace the broken shaft in the old impeller. This should work if the broken pump doesn't have that much run time on it. If it doesn't work you may be out $16.00 the cost of a new impeller.
Mike

    Bookmark   June 26, 2011 at 11:39AM
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joycecarey_charter_net

I have a Pondmaster 3600 pump. Just replaced the impeller, and the shaft broke almost immediately. So I have a newish impeller with a broken shaft. I have the shaft from the older impeller. I don't see how to get the remainder of the broken shaft out of the new one to replace the shaft. The Danner folks were no help at all. Suggestions?

    Bookmark   June 29, 2011 at 10:51AM
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SamCec

I have a 4 year old Pond Master 12B. It was working find until yesterday. I took the head off and plugged it back in. The motor works.
The Impeller rocks in the shaft giving the impression that a bushing is missing.

When I put the head back on and tighten it up, it starts but because of the impeller rocking, it immediately jams.

Is this something I can fix. I have very little motor repair skills.

Sam

    Bookmark   April 22, 2012 at 5:39AM
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mike_il(WChi)

Sam,
You need a new impeller. It will come with a new shaft. Just pull out the old impeller and put the new one in and the pump will be like new.
Mike

    Bookmark   April 22, 2012 at 2:42PM
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