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1. Remove the back panel of the furnace.
2. Remove the nuts which hold the heating plate wires to the power terminals and straighten the heating
plate wires (Figure 4).
3. Open the furnace door and find the two ceramic sections at the front of the furnace chamber. Hold the
furnace door partially open while removing the ceramic sections. They are not readily removed when the
door is fully open. Remove the right-hand ceramic section by lifting it upward until the bottom of the section
clears the sheet metal housing. Pull the bottom of the ceramic section out, then pull it down so the upper
half clears the sheet metal housing. Remove the left-hand ceramic plate in the same way.
4. Remove the floor plate, then carefully slide the two side heating plates out the front of the furnace. The two
rear heating plates on Infinity L may now be removed.
5. Check the condition of the filler strip insulation in the space to the left and right of the ceramic front
sections. Replace if required*.
6. Check the condition of the floor plate which provides insulation and serves as a spacer between the bottom
ends of the heating plates. Replace if required*.
7. To install the new heating plates reverse the procedure. Push the ceramic heating plates back into place on
the rear insulating panel. When reconnecting the heating plate wires at the rear of the furnace, be sure to
replace all hardware in its original position. (Figure 4.) Tighten all connections.
*Replacement Part: Floor Plate w/ Filler Strip Insulation
Infinity M: PN 33980; Infinity L: PN33981
FIELD SERVICE
REPLACEMENT OF HEATING PLATES
REPLACEMENT PART NUMBERS
21
115V
M (Set of 2) 33915
L
Set of 2 Side Plates 33918
Set of 2 Rear Plates 33917