Question about Jackson 25 in. TempStar HH Free-standing Dishwasher

3 Answers

Pump Continuously surges

I work for a leading chemical company and this problem has haunted 2 Territory Managers trying to fix this issue. In the account we service the motor 2 to 3 times a month sounds like it is surging and that there might be air in the pump. Once we remove the pump and reinstall it all is well surging stops.

Here is what we have already done.

1. Checked the incoming building water pressure which is static and comes in at 20 PSI.
2. Augered the wash arm manifolds to check if there's anything causing the air gap inside the pump housing.
3. Made sure all wash arms are free of debris.
4. Nothing is ever caught in the pump or manifolds.

This customer is getting extremely angry with this machine he's purchased. The only thing we can think of doing is drilling a 1/8 size hole in the impeller just in case air gets caught so that it may travel in back of the pump seal. Since Jackson Tempstar motors have the motor impeller static you are unable to move the impeller forward of backwards to help with pressure.

Can someone offer a solution? We are getting tired of constantly removing the motor check and re-installing.

Thanks

Posted by on

  • katskan Jan 13, 2008

    Thanks BIgg T I'll try that for sure and follow up with you the next time this happens. Due to the fact that it only happens every few weeks I'm skeptical about loosing water through the drain plunger. Perhaps this is what is happening. On my next call I will fill the unit and pour half a gallon of water. ( The really weird thing is in looking inside the machine once the fill cycle completes the leves seem to operate normally. Pump intake screen is clean, manifold clean and wash arms clean. I'll be sure to return and examine the wash arm seams as you suggested. Thanks for the advice Bigg T. I hope this works. The unit is leveled I've checked that part of my routine install.

    Thanks again I'll let you know soon enough I'm sure!

    Shawn

  • katskan Jan 25, 2008

    Unfortunately, I tried everything you suggested and still the pump continuously has an air lock on this Tempstar unit. The drain is sealed, the machine is leveled, I spent Saturday removing the motor and re-installing it and my other friend Territory Manager was there on Sunday doing the same. For some reason everytime we remove the mother and re-install it the surge dissapears instantly. The one TM i am working with has 25 years experience in the field and has never in his life seen anything like it. If there's something else that we are overlooking could you perhaps share a bit more info?

    Thanks bigg T

    Shawn

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3 Answers

The pump housing O-ring? Or the gasket that seperate the pump housing and the motor? Or would you mean the impellor/motor seal assembly? I have not replaced that yet perhaps I should give that a try. Could you provide in detail a little more information? Thanks

Posted on Apr 06, 2008

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Hi,im a hobart service tech.couple of things to try (you may already have)--check the wash arms at the seams make sure their not cracked,make sure the drain is sealed and not leaking at all.if the unit loses any water or the wash arms are cracked at the seam the unit will sound like its starving for water.make sure the unit is leveled.next time you go back if its acting up pour a half gallon of water in the tank and see if it runs correctly,if it does you could be losing water or the water fill vave could be acting up and not letting enough water in.let me know.

Posted on Jan 13, 2008

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