Fig. 32. Removing and Installing the Electrodes
3
2
2
1
1
I-57
B-070343_EN • B
M
aintenance
Removing and Installing the Ignition and
Ionization Electrodes
Conditions:
Tools and Material:
î
Wrench, hex head, size 3
î
Torque wrench
î
Protective gloves
î
Face mask
These procedures are applicable to all NES-
TA PLUS models. Only the position of the
electrodes differ. Only the N 280 FS is shown
here. Please refer to
Fig. 3
to
Fig. 5
for the
exact location on the various models.
Removal Procedure:
1.
Disconnect all connectors and grounding ca-
bles from the electrodes.
î
The procedure is identical for
both electrodes.
î
When removing the electrodes in the
scope of the periodic maintenance, the
electrodes and their gasket must be
discarded and replaced by new ones.
OFF
i
i
2.
Wearing protective gloves and a face mask,
remove insulation from the upper plate. Re-
tain for reinstallation.
3.
Release two screws (
1
) from the electrode
flange.
4.
Remove the electrode and screws from the
burner plate (
3
). Discard, as required.
5.
Remove electrode gasket (
2
) and discard, as
required.
Installation Procedure:
1.
Install new gasket (
2
) on the burner plate (
3
).
2.
Insert the electrode and fasten with 2 screws (
1
).
3.
Torque screws at 2.7 Nm.
4.
Wearing protective gloves and a face mask,
install insulation on the upper plate.
5.
Reconnect all connectors and ground cables
to the electrodes.
Follow-on Task(s):
1.
Reinstall all removed access panels, refer
to
“Removing and Installing the Access
Panels” on page I-32
2.
Restart the appliance, see
“Restarting after
Maintenance” on page I-56.
Distance between
electrode tips : 3 +/- 0.5 mm
