AIC Nesta N 120 FS, Installation And Maintenance Manual, Page: 50 / 72

Fig. 19. Removing and Installing the Electrodes
3
2
2
1
1
I-50
A-070336_EN • Rev. A
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
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.
2. Wearing protective gloves and a face mask,
remove insulation from the upper plate. Re-
tain for reinstallation.
OFF
i
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 tasks:
1. Reinstall all removed access panels, refer
to “Removing and Installing the Access
Panels” on page I-27
2. Restart the appliance, see “Restarting after
Maintenance” on page I-46.
Distance between electrode
tips : 3 +/- 0.5 mm