Maytag MDB7600AW Service and Disassembly Procedures, To Check Heating Element, Wattage Checks

Service and Disassembly Procedures

!WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit and discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Heating Element

The purpose of the Heating Element is to provide heat during the dry cycle and increase water temperature during portions of the wash cycle when certain options are selected.

The element is dual wattage. During wash cycles, it is rated at 830 watts. During the dry portion of the cycle, it is rated at 650 watts. Increased wattage is possible because of water flowing across the element sheath.

To Check Heating Element

1. Disconnect power to the machine.

2. Remove Front Support and Toe Panel. (See paragraph Front Support and Toe Panel removal).

3. Locate element terminals, remove wires, perform continuity check across terminals.

4.The resistance of the element should be approximately 22 ohms. If OPEN, replace element.

5.Perform continuity check from each terminal to the element sheath. NO continuity should be present. If continuity is present, replace the element.

Removal

1.Disconnect power to the machine.

2.Remove Front Support and Toe Panel. (See paragraph Front Support and Toe Panel removal).

3.Locate element terminals and remove wires.

4.Remove mounting nuts securing Heating Element to Tub.

5.Release Heating Element by tipping Heater Support Brackets towards the Tub front corners and rotating until bracket unlocks.

NOTE: Before reinstalling Heating Element, examine condition of O-ring seals that are located between element leads and tub basin. Replace if needed. Failure of seal will result in a water leak and possible floor damage.

Wattage Checks

To verify wattage of the element, take an amperage reading at the blue wire of the Heating Element. Multiply the amperage reading by voltage at the Dishwasher (Amps x Volts = Watts).

Normal element amperage during the dry portion of the cycle is 5.0 to 5.5 amps. When used during a wash cycle, normal amperage is 7.0 to 7.5 amps.

6. Lift element out of Tub.

5-30 16021814 Rev. 0 ©2002 Maytag Appliance Sales Company