Duke DSO 500, Service Manual

Page: 61 / 80

61
HEATER ELEMENT
REPLACEMENT
1. Disconnect and isolate the oven from the
power source.
2. Remove the oven top panel.
3. Remove the oven right and left panels.
4. Loosen the remaining lower central bolt on
the rear panel.
5. Remove the two Philips head screws securing
back panel to heater cover panel.
6. Allow rear panel to tilt rearwards and secure
with a short length of wire or long cable tie.
The lower edge remains located by the loos-
ened lower central bolt.
7. Remove wires to heaters using a pair of thin
3/8 inch open ended wrenches.
8. Remove nine Philips head screws securing
the heater insulation outer panel and remove
panel.
9. Remove thermal insulation material and
secure against loss or damage.
10. Remove ten Phillips head screws securing
heater assembly to oven.
NOTE: Take care when removing these screws.
After extended service, some of these
may bind. If resistance is encountered.
A drop of WD-40 or similar oil is highly
effective if allowed several minutes to
penetrate into the threads.
11. Remove heater assembly, Figure 30.
12. Fit new 1700 W heat coil.
13. Reassemble by Reversing the procedures.
Figure 30. Heater Assembly
REPAIR PROCEDURES