OEM C641, Operating And Service Manual

Page: 70 / 196

PRATICO
C641 - C642 - C643
Maintenance
EN - 28
FIG. 4
1
6.1.d.b - Ceiling or bedplate resistance replacement
(Fig. 4)
DANGER
This operation shall be carried out by skilled
technicians.
To access the resistance, the oven cover-
ing mineral wool shall be moved, therefore,
it is necessary to use suitable individual
protection means.
• Stand at the rear of the oven and remove the rear
panel (1) undoing the relative screws.
• Remove the oven covering mineral wool (2), loosen
the resistance fixing screws (3) (two per resistance).
• Electrically disconnect the resistance, then open the
oven door.
Bedplate resistance:
After opening the oven door, take off the refractory
surface and the resistance to be replaced, as well.
Ceiling resistance:
after opening the oven door, remove the split pins
(4), take off the resistance support bar (5) then, take
off the resistance to be replaced.
• Replace the resistance and mount again proceeding
in the reverse order taking care of a proper power
supply cable connection.