The fuses are located at the cable entry point. Remove the back panel or control box
back panel to gain access to the fuses.
7.8
Door Plug Replacement
See section 7.2 - wearing a face mask is required.
The door insulation is made of bonded refractory sections, supplied as one piece.
Lift the furnace door to the open position and remove the door cover from the plug
carrier assembly by loosening the nuts at each side.
From the front, unscrew the self-tapping screws which hold the upper door plug
retention bracket in place and remove the bracket.
Remove the old door plug. Place the new door plug in position, ensuring that the
chamfered edge is uppermost. Refit the upper bracket and door cover.
When first heating the furnace after a replacement, ensure that the ventilation is good:
emission of some fumes may be expected.
23
7.0 Repairs and Replacements
