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operation.
It is recommended that a heating
element be removed at least once a year for
examination. If it is scaled, all of the elements
should be removed and cleaned. The element
gasket must be replaced when the element is
removed for cleaning.
Small accumulations of lime scale may be
removed with a stiff bristle brush. Severe
accumulations of lime scale should be removed by
dissolving the accumulation in a commercial
delimer.
1. Drain the heater following "SHUTDOWN
PROCEDURE" instructions.
2. Disconnect the wires attached to the
element terminals. Try not to disturb the
wiring unnecessarily and reconnection will
be easier.
3. Loosen the screw-in element flange with a
socket and breaker bar. Do not use an
impact gun (air or electric) to remove the
element flanges from the tank. Mark the
location of each element in the tank
openings so they may be returned to their
original position.
4. Remove the elements from the opening
with a twisting, pulling action if the
elements are scaled beyond the size of the
tank flange openings. Brush loose scale
from elements.
5. Place scaled ends of heating elements into
a delimer solution and allow scale to
dissolve. Do not permit delimer or water
to contact heating element electrical
terminals.
6. Flush clean ends of elements with water
when deliming or cleaning is completed.
7. Clean remaining gasket recess on each
screw-in element flange. Do not reuse
element gaskets.
8. Install a new gasket on each element.
Install element into the tank opening
where it was originally installed. Tighten
the flange with the socket and breaker bar
used to remove the element.
9. Attach wires to element terminals from
which they were removed.
10. Follow "START UP PROCEDURE"
instructions to restore hot water service.
Check for water leaks around elements and
proper operation when heater is filled.
Rheem Manufacturing MEA
contact@rheem-mea.com
Page: 8 / 8
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