EM Maintenance and Care

MAINTENANCE INSTRUCTIONS

Do not attempt to repair this water heater yourself. Call a qualified service person for service assistance. Always unplug the power supply cord when the water is turned off or when servicing or draining the water heater. Before calling for service, first confirm that the water heater is properly filled and that 110VAC power has not been interrupted.

WARNING: Before servicing or cleaning the water heater, disconnect the power cord from the electrical outlet. NOTE: For most maintenance operations, the water heater will be drained. In all cases before draining you must unplug the power cord.

DRAINING AND REMOVING THE WATER HEATER:

  1. Unplug the water heater.
  2. Open a hot water faucet to let hot water run out. Allow water to flow until water is no longer hot.
  3. Turn off the cold water supply to the water heater.
  4. Close the hot water faucet.
  5. Disconnect the water heater from both the hot and cold water connections.
  6. If possible siphon out remaining water.
  7. Carefully detach the water heater from the wall.
  8. Tilt the water heater to drain remaining water out of the heater.

REMOVING THE HEATING ELEMENT:

  1. Turn off power supply; unplug water heater power cord and drain (see above).
  2. Remove cover.
  3. Remove all the line wires from the heating element.
  4. Unscrew the heating element retaining nuts.
  5. Remove the element.

DESCALING THE HEATING ELEMENT: Scale deposits can affect the heating capability of the element. Heavy scale can even cause the element to burn out. The element can be descaled chemically or manually.

  1. Remove the heating element (see above).
  2. To descale chemically, soak the heating element in white vinegar or other descaling solution and then rinse well with fresh water.
  3. To descale manually, let element dry and then using a non metallic brush similar to a tooth brush; brush the residue from the element. Avoid damaging the surface of the element.
  4. Reinstall the element and gasket.
  5. Refill tank with water before turning on the power to the water heater.

REPLACING THE HEATING ELEMENT:

  1. Unplug and drain the water heater (see prior instructions).
  2. Remove heating element noting original positions of all connections.
  3. Install new element with gasket making sure the new element and gasket are positioned correctly.
  4. Tighten retaining nuts and make the wire connections to their original locations.

CHANGING THE THERMOSTAT:

  1. Unplug the water heater from the electrical outlet.
  2. Drain and remove the water heater. (see page 12)
  3. Remove the bottom panel of the water heater and remove the panel.
  4. Remove thermostat knob and unscrew two retaining screws. It may be necessary to pry the knob off of the thermostat spindle. Now remove front panel.
  5. Disconnect the push-pull wire connectors on the thermostat noting which connector goes to which terminal. Terminals are marked. 5. Remove the thermostat probe from the well.
  6. Install new thermostat, attach wires and tighten screws.

 

RESETTING THE HIGH LIMIT SWITCH: The high limit safety shut off switch will shut the water heater down when water temperatures exceed 190 F. Power is automatically turned off to the heating element. The shut off device may activate as a result of a power outage or an electrical storm.

NOTE: Do not attempt to reset the high limit switch without first allowing the water heater to cool down the high temperature water inside the heater.

WARNING: Do not tamper with the reset button to override overheating shut down.

  1. Unplug the water heater from the electric outlet.
  2. Drain and remove the water heater. (see page 12)
  3. Remove six screws retaining the bottom panel of the water heater and remove the panel. Locate the high limit reset button.
  4. Depress the small red button in the center of the junction box, replace the bottom panel and place the water heater back into service.

NOTE: A lower temperature setting saves energy and reduces the risk of scalding. CAUTION!: Call a technician if the high limit needs to be reset frequently

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