Repair work at the inner and outer chamber
7.8 Testing and replacing the heating element (-4E1)
Spare parts:
Heating element 240 V / 600 W (order no. 5005-0183)
Heating element spacer (order no. 4020-0003)
PU foam (order no. 1004-0009)
Shrink down silicon hose, length 160 mm /
6.3 in
(order no. 6007-0023)
Silicone, red (order no. 1004-0007)
Gasket (order no. 6005-0146)
Cable sockets stainless steel (order no. 5024-0007)
Necessary tools
Crosstip screwdriver, size 2
Multimeter measuring device
Fork wrench, size 20
Universal cutter
Side cutter
Vise-grip wrench
1.
Disconnect the unit from the power supply.
2.
Remove the rear panel (chap. 5).
3.
Measure with a multimeter the resistance of the heating element (D) at the connector (-X60) at pins 1
and 2. If the resistance is 96
Ω ± 10 %, the heating element is OK. If the measuring results in another
value, the heating element is defective and must be replaced.
4.
Remove with a knife the foam in the mounting opening above the fan, which surrounds the connec-
tions of the heating element (D).
Protect the fan which is located underneath by covering it with suitable foil etc.
5.
Cut open the shrink down silicon hoses filled with silicone and uncover the connections of the heating
element. Disconnect the cables.
6.
Remove the inner chamber (chap. 7.7).
7.
Then remove the fixing screw (E) in the inner chamber.
8.
Now pull out the heating element through the inner chamber and remove the heating element spacer
(F).
9.
Mount the new heating element by following steps 5 to 8 in reverse order.
The gasket (C) at the heating element must be replaced.
10.
Install new cable sockets at the cut cable ends and put approx. 80 mm / 3.15 in long shrink down sili-
con hoses over the connections of the heating elements. Connect the heating element and fill the
shrink down silicon hoses with red silicone.
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Service Manual KBF (E5.2) 04-2015