Panasonic NN-CS599S, Service Manual

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6.11. Heater DU (steam heater)
1. Remove water tank from escutcheon base.
2. Keep pressing [Microwave with Steam] pad for more than 2
seconds to drain the water remaining in the water pipes and
tubes into oven cavity.
3. Remove tubes from both ends of copper pipe.
4. Remove 1 screw holding air guide B on the base.
5. Release catch of nozzle holding copper pipe.
6. Remove left and right door key springs from door arm.
NOTE:
Support door before removing door springs.
7. Turn over the microwave oven and remove all screws
holding base on oven assy & two hinges.
NOTE:
Do not remove the two screws holding the left and
right hinges on the bottom of cavity front plate.
8. Remove base from oven assy.
9. Disconnect 2 lead wires from heater DU terminals.
10. Remove 1 screw holding thermistor on heater DU.
11. Remove 6 screws holding heater DU & thermal cutout
bracket on the bottom of oven assy.
To install heater DU
NOTE:
1.Spread silicon grease evenly between the
interface of heater DU and bottom of oven cavity.
(about
0.3mm thickness), this is for good
conductibility.
2.Tighten 6 screws and make sure there is no gap
between heater DU and bottom of oven cavity.
3.Do not forget to screw the thermal cutout bracket
along with heater DU.
To install thermistor
NOTE:
Before installing thermistor, please fill enough
silicon grease into the installation hole of heater DU
for good conductibility.
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NN-CS599S