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Posted on Jun 05, 2011

My dishwasher has been fine for five years. Suddenly, about six months ago, the glasses came out scummy and there seems to be a coating on the dishes as well. Is this calcium deposit? If so, why would it suddenly begin -- the water supply is the same. Is there a defect in the dishwasher? Thanks.

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  • Contributor 8 Answers
  • Posted on Jun 05, 2011
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Joined: May 21, 2011
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Hello; first thing I would check is the spray arms, to make sure the holes are clean. A lot of debris from food particles, broken dishware, etc, can build up and block the spray holes over five years.
The spray arms can usually be removed easily, with a screw or wing nut holding them in place. There are normally three or four spray arms, (Be careful NOT to drop the wingnut or screw into the tub, as it will ALWAYS land in the least accessible spot!)
Once the spray arms are out, you may see debris partially protruding from the holes; DON'T try to pull it out, which can distort the size and shape of the holes, and thereby effect the cleaning. Instead, push the debris back into the spray arms, and shake it out through the large opening in the center where it connects to the dishwasher. Rap the spray arm against a firm but padded object to loosen any stuck debris. Once the "rapping" doesn't produce a rattling noise inside the arm, it should be clean.
Hope this helps. Check your owners manual for helpful maintenance tips like this.
Good luck!
Alec

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