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I thoroughly cleaned out sump, impeller, and housing around impeller. Replaced housing and filters. With wash arm off, the pump

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Old 08-12-2012, 03:05 PM
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Default Do I need a new pump / motor
Model Number: FDB126RBS2   Brand: Frigidaire   Age: 5 - 10 years   

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I thoroughly cleaned out sump, impeller, and housing around impeller. Replaced housing and filters. With wash arm off, the pump would produce a column of water almost as high as the top of the inside of the cabinet. After about five seconds the column of water dwindled and completely dropped off to nothing. I removed the filters and housing again to make sure the impeller was not plugged and was actually turning. Would a bad o-ring between the recirculation side and discharge side of the pump cause this problem? There were also chunks of a plasticized material in the sump discharge filter basket when I first took the filters out. Is there a sealant or caulking applied to the impeller housing at the factory? Or is there supposed to be more to the impeller than the radial wheel? I did not know if this material was from with in the machine or something the tenant put in the machine.


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  #2 (permalink)  
Old 08-13-2012, 03:11 PM
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The attached article will explain how the water distribution system in your dishwasher works. Hopefully it will help you to diagnose the problem.

Here are the breakdown diagrams and Replacement parts for Frigidaire FDB126RBS2 Frigidaire/dishwasher | AppliancePartsPros.com

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File Type: doc WATER DISTRIBUTION SYSTEM.doc (261.5 KB, 9 views)
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  #3 (permalink)  
Old 08-14-2012, 05:44 AM
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Hi,
Quote:
Originally Posted by Rokefuller View Post
I thoroughly cleaned out sump, impeller, and housing around impeller. Replaced housing and filters. With wash arm off, the pump would produce a column of water almost as high as the top of the inside of the cabinet. After about five seconds the column of water dwindled and completely dropped off to nothing. I removed the filters and housing again to make sure the impeller was not plugged and was actually turning. Would a bad o-ring between the recirculation side and discharge side of the pump cause this problem? There were also chunks of a plasticized material in the sump discharge filter basket when I first took the filters out. Is there a sealant or caulking applied to the impeller housing at the factory? Or is there supposed to be more to the impeller than the radial wheel? I did not know if this material was from with in the machine or something the tenant put in the machine.
This would serve as a hunch. I imagine something fell on the heating element, melted and dripped into the water infiltrating your circulation. Plastic utensils are often the source of this type of debris.
Good luck.
Nic.
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