I replaced a 20 year old dishwasher with a new Admiral dishwasher. But it is not cleaning anybetter than the old one. Coffe stain on cups and a flim on plates and silverware. I am thinking i need to install a water softer. My water is real hard. I have not had it checked but i think this is the problem.
Dishwasher not cleaning
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hj
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dw
It could be that, or unless the DW has its own heater, the water may be "cold" from sitting in the pipes so that you are washing with cold water.
It could be that, or unless the DW has its own heater, the water may be "cold" from sitting in the pipes so that you are washing with cold water.
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Jimbo
Plumber
You did not get a top of the line model. Check the features: does it have preheat? If not, it is imperative to run a kitchen faucet until hot water comes from the tap, before you start the DW. Dishwashing detergents absolutely do not work in cold or warm water. They prefer 140º, which is too hot a setting on your water heater, but it shoul be at 125º at least.
I assume you have one or two spray arms but not three. So placement of dishes and cups in the racks is important.
I assume you have one or two spray arms but not three. So placement of dishes and cups in the racks is important.
Jadnashua
Retired Defense Industry Engineer xxx
Having suffiently hot water makes the difference between barely cleaning and good cleaning on most dishwashers. For many situations, a preheater is almost required. On a long cycle, the water can be off 20-30 minutes or more between filling and can cool off a lot, especially in the winter.
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