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M
S
AINTENANCE AND
Caution
To avoid breakage of a replacement
heating element, be sure that the slot
into which the replacement heating
element slides is free of all debris so
that the element goes in very easily.
Forcing an element into a slot, howev-
er slightly, can result in its breakage.
36
ERVICING
To replace a heating element
(refer to Fig. 1A):
1.
Remove top cover from heating chamber side
of furnace.
2.
Remove the clips holding the connector cable
(4) to the defective heating element. Unwrap
the connector cable from the element.
3.
Slide the heating element with element ceram-
ic holder attached upward, out of the slot in the
insulation. Save the blanket insulation for
reuse.
4.
Remove the element ceramic holder, noting its
exact position on the heating element.
5.
Fasten the element ceramic holder on the new
element in exactly the same position it was on
the old element.
6.
Begin inserting the new element with element
ceramic holder attached into the slot in the
insulation; stop when there is just enough room
left to insert the new element insulation.
7.
Continue sliding the element with the element
insulation tail into the slot. DO NOT FORCE -
even slight pressure can fracture the heating
element.
8.
When the element ceramic holder is nearly
seated against the main insulation, check the
top of the element insulation tail. In its final
position, the top should be about 1/8 inch
below the surface of the main insulation.
9.
Position the blanket insulation piece from step
c in the cavity over the insulation tail. Complete
insertion of the heating element until the ele-
ment ceramic holder rests on top the main
insulation. Check the heating element on the
inside of the chamber. The large diameter sec-
tion of the element must be flush with or slight-
ly projecting from the surface of the insulation
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