Question about Tappan 18 in. MDR251RE Built-in Dishwasher

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Arms not rotating

My dishwasher is not cleaning the dishes properly the water is coming in ok but have noticed that the arms are not moving.

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  • Tappan Master
  • 43,501 Answers

Hi,


I have an older dishwasher also and recently my wife also complained about it not cleaning right... so me being the man I am tried in vain to clean the things... Bought new spray arms online and installed them in minutes...now the thing works like new... However I have also found that if the heating element goes bad then that also can mess things up bad... So I would buy new spray arms, and also check out the heating element to make sure it is working... Here is a tip that will help you with the online buying...

Dishwasher Spray Arms not Spinning

How to Buy Appliance Parts Online

A bad heating element causes many problems in dishwashers...

Dishwasher Problems The Heating Element not Working

Dishwasher Maintenance

heatman101



xxx

Posted on Sep 29, 2010

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Posted on Jan 02, 2017

heatman101
  • 43501 Answers

SOURCE: arms not rotating

Hi,


I have an older dishwasher also and recently my wife also complained about it not cleaning right... so me being the man I am tried in vain to clean the things... Bought new spray arms online and installed them in minutes...now the thing works like new... However I have also found that if the heating element goes bad then that also can mess things up bad... So I would buy new spray arms, and also check out the heating element to make sure it is working... Here is a tip that will help you with the online buying...

Dishwasher Spray Arms not Spinning

How to Buy Appliance Parts Online

A bad heating element causes many problems in dishwashers...

Dishwasher Problems The Heating Element not Working

Dishwasher Maintenance

heatman101



tter

Posted on Sep 29, 2010

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Milky water when rinsing in dishwasher & gritty covering on dishes


I have spent many years (47) in the catering industry using catering dishwashers, under counter models, corner- wash stations and also conveyer machines..

The milky water is a by-product of the wash water and rinse water mixing.

The spray are has to rotate freely or the dishes won't wash or rinse properly. They spins a lot faster than you realise and this adds pressure to the water, but also a pulsating effect to remove dirt.

Over doing the salt can cause more problems that it solves. The gritty film may indeed BE salt. I actually prefer Calgon as a softener.

My advice is to remove both top and bottom spray arms. Check the slots/holes for obstruction, and run water through them under a tap, outside to inside (the opposite to how it is in the machine) rocking the arms up and down to allow any obstructions to flush out. Lemon pips and toothpicks are out biggest problem! Put the arms back and make sure they spin freely. Sometimes they just lock up for no apparent reason!

Use CLR descaler in the machine to clean it using the instructions on the bottle. Then run the dishwasher using the recommended doses of detergent and rinse aid.

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Hello ezideas - First I suggest verifying that there is enough water pressure coming into the unit and that it is at least 120F. Do you noticed if the spray arm will rotate freely or if it is damaged? If so, the spray arm assembly may need to be replaced. Connect with a professional to accurately pinpoint any potentially more serious issue.

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Ensure the Frigidaire dishwashing machine is fully connected to a power supply. Shut the dishwasher door firmly and select a wash cycle. Press "Start" to begin. Check that the "delay start" option was not selected.

  • 2 Verify that dishwashing detergent is placed in the dispenser and choose a longer washing cycle for heavily soiled items. Do not overload the dishwasher, as this may prevent proper cleaning.
  • 3 Check the household water pressure, which should be between 20 and 120 PSI (pounds per square inch). A water pressure gauge can be obtained at most home repair stores or hardware stores.
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    Verify that dishwashing detergent is placed in the dispenser and choose a longer washing cycle for heavily soiled items. Do not overload the dishwasher, as this may prevent proper cleaning.

    Check the household water pressure, which should be between 20 and 120 PSI (pounds per square inch). A water pressure gauge can be obtained at most home repair stores or hardware stores.

    Turn on the hot water at the sink closest to the dishwasher prior to starting the dishwasher to raise the water temperature inside the dishwasher. Check the hot water temperature, which should be at least 120 degrees Fahrenheit for proper cleaning.

    Check the spray arms in the dishwasher and move dishes that may be blocking the water spray or preventing the spray arms from rotating properly.

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    Dishes constantly come out dirty.. What temp should the water be while the dishwasher is running?


    Supply water temperature should be above 120 degrees F for effective cleaning. Run hot water from your kitchen sink (your dishwasher should be tapped off the hot water line near your sink faucet) right before you start a dishwashing cycle to make sure it's as hot as it can be when the dishwasher begins filling. Also, during the wash cycle the heating elements at the bottom of the tub may turn on and warm the water further even if you select a "No Heat Dry" option causing a noticeable shot of steam to escape if you open the door during a cycle.
    Note: I recently had a problem with our dishwasher (Frigidaire FDB834RFS0) causing dishes to come out dirty and the detergent dispenser to be left with undissolved detergent. Our problem happened to be caused by a partially clogged strainer in the water supply valve. (I would imagine Whirlpool most likely has some kind of filter/strainer in its water valve as well.) When the supply valve was commanded to open for some time, I noticed the water level in the tub would barely be visible below the lower spray arm. After cleaning out the strainer (required removing and disassembling the water supply valve) the water level was noticeably higher -- almost at the bottom of the float or about an inch below the heating elements. Our dishes and the detergent dispenser are now clean.
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    Make sure to clean out the filter basket at the bottom of the basin below the lower spray arm occasionally as it can clog and cause the pump to starve due to lack of water. If the pump can't get a supply of water to pump to the spray arms and nozzles, your dishes will not get sprayed evenly and you will end up with them being poorly cleaned.
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    Arms not rotating


    Hi,


    I have an older dishwasher also and recently my wife also complained about it not cleaning right... so me being the man I am tried in vain to clean the things... Bought new spray arms online and installed them in minutes...now the thing works like new... However I have also found that if the heating element goes bad then that also can mess things up bad... So I would buy new spray arms, and also check out the heating element to make sure it is working... Here is a tip that will help you with the online buying...

    Dishwasher Spray Arms not Spinning

    How to Buy Appliance Parts Online

    A bad heating element causes many problems in dishwashers...

    Dishwasher Problems The Heating Element not Working

    Dishwasher Maintenance

    heatman101



    tter

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    1 Answer

    Dirty dishes


    if water comes into machine then valve is ok.
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    spray arms only rotate with water jetting out of angled nozzles at end and if these are blocked then no rotation and poor wash

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    Call tech support! That's why these people get paid. Sites like this wouldn't need to exist if they did their jobs correctly!

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