Question about Whirlpool 24 in. ADG7540 Built-in Dishwasher

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I hav e an ADG7450.It will wash at 40 or 50 degrees but not at higher temperatures.Why?

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Hi


The water is not heating as the heating element has gone bad or a fuse has blown which is preventing heating element to turn on. To check the heating element you'll need to turn off the dishwasher, unplug it. After unplugging it check the heating element for mineral deposit on it, clean the deposits using a soft brush and a cleaning solution (Don't scrub the element hard). If this doesn't resolves the issue then remove the panel and examine all the wiring connections to the heating element. Now, use a multimeter and check for the resistance reading (ohms, Rx1) for the heating element. The multimeter should display between 1200-1600 ohms or 1.2K ohms. If it is less than 1200 then you'll need to get the heating element replaced. Also, check for any blown fuse around the element. This should resolve your issue.

Thanks
Daniel

Posted on Aug 20, 2010

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Hello,

By keep your refrigerator or freezer too cold, it unnecessarily wastes electricity. The recommended temperature is 37 to 40 degrees for the fresh food compartment of the refrigerator. The recommended temperature for the freezer compartment is 5 degrees. If you have a separate freezer for long-term food storage, it should kept at 0 to -5 degrees.

The following steps below is how to set the temperature of your refrigerator.

The first thing you must know is that your refrigerator should be set at 37-38 degrees. Anything at 40 or higher and you are risking food born illness (food poisoning) or spoiling your food.

Step 2
Place your magnetic thermometer in the refrigerator.

Step 3
Set your dial on your refrigerator to the second lowest setting. (If your refrigerator is already equipped with a digital thermostat, simply set it for 37 or 38 degrees and do not move on to the next step)

Step 4
After 2 hours, check your thermometer reading. If your reading is 38 degrees, there is no need to go higher and you are ready to put your groceries in. Be sure not to open and close your refrigerator during these two hours or your temperature reading will be incorrect.

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1 Answer

Temp. too hot


First off, the temp adjustment can only be made by a trained service tech, since the dishwasher will need to be reprogrammed to allow for a lower temperature in the rinse cycle but still have the higher temp needed in the wash cycle. Also, since any change in the water temp settings will require a longer wash and rinse cycle to be programmed into the unit.

Of course, you could simply lower the water temp on the water heater that supplies water to this unit, but you'd have lower temp water elsewhere and likely get cited at the next heatlh department inspection on that issue.

Since this is a commercial dishwasher, you might want to reconsider lowering the temp, since health codes and standards for commercial establishments require a MINIMUM water temperarture of 185 degrees F (85 degrees C) for proper operation and to get all the crud off the dishes, etc.

Note, the manufacturer sets these units to the higher temp, 203 degree F (95 degree C) knowing that the water will cool down quickly once the wash cycle starts and the water contacts the dishes, etc. That is also why these units have a added heater element, to help keep the water at the correct temperature needed to both clean AND sanitize the dishes, according to established health standards.

If you really want to change the water temp settings, contact your Hobart service rep and explain the reason you want it lower and see what they say.

Hope you found this very helpful and best regards!

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