State P6 40 20T4 W - Manual (Page 17)

Periodic Maintenance (cont’d)
7. Disconnect the two wires on the element and unscrew
the old element from the tank.
8. Clean the area around the element opening. Remove
any sediment from or around the element opening and
inside the tank.
9. If you are cleaning the element you have removed, do
so by scraping or soaking in vinegar or a de-liming
solution.
10. A new gasket should be used in all cases to prevent a
possible water leak. Place the new element gasket on
the thread side of the cleaned or new element and
screw into tank, securing tightly using an element
wrench.
11. Close the water heater drain valve by turning the han-
dle to the right (clockwise). The drain valve is on the
lower front of the water heater.
12. Open the cold water supply valve to the water heater.
NOTE: The cold water supply valve must be left open
when the water heater is in use.
13. To insure complete filling of the tank, allow air to exit
by opening the nearest hot water faucet. Allow water
to run until a constant flow is obtained. This will let air
out of the water heater and the piping.
14. Check element for water leaks. If leakage occurs, tight-
en element or repeat steps 2 and 3, remove element
and reposition gasket. Then repeat steps 10 through
14.
15. Reconnect the two wires to the element and then
check to make sure the thermostat remains firmly
against the surface of the tank.
17
B. Models with Upper or Lower Thermostat with High
Limit: The plastic terminal cover is clipped to the ther-
mostat and held by tabs on both sides of the thermostat.
Bend the plastic terminal cover away from the tab and,
being careful not to pull the thermostat from its brack-
et nor bend the thermostat bracket, remove the termi-
nal cover.
WARNING
Replacement elements must (1) be the same voltage and
(2) no greater wattage than listed on the model rating
plate affixed to the water heater.
CAUTION
Never use this water heater unless it is completely full
of water. To prevent damage to the tank and heating ele-
ment, the tank must be filled with water. Water must
flow from the hot water faucet before turning “ON”
power.