What is the recommended incoming water temperature for the DW-1 dishwasher?
The incoming water temperature should be 120°F (49°C) for optimal cleaning and drying results. This temperature is necessary to properly activate the detergent and melt greasy food soils. You can check your water temperature by running the nearest hot water faucet into a glass and using a candy thermometer.
From the official Maytag DW-1 Classic Dishwasher manual, page 5
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