20168415
34
GB
Maintenance
7.3
Opening the burner
Loosen the screw 1)(Fig. 37) and remove the hood 2).
Disengage the articulated coupling 3) from the graduated
sector 4)(Fig. 37).
Remove the screw 5)(Fig. 37) only with the long head
models; pull the burner back on the slide bars 6)(Fig. 37) for
about 100mm.
Disconnect the probe and electrode leads and then pull the
burner fully back.
Now extract the gas distributor 7)(Fig. 37) after having
removed the screw 8)(Fig. 37).
Remove the screws 2)(Fig. 11) and tighten the two
extensions 18)(Fig. 4) supplied with the burner.
Re-tighten the two screws 2)(Fig. 11) on the terminal of the
extensions.
7.4
Closing the burner
Push the burner to approximately 100 mm from the pipe
coupling.
Reconnect the previously disconnected cables and slide in
the burner until it comes to a stop.
Replace the screw 5)(Fig. 37) and carefully pull the probe
and electrode cables outwards until they are slightly taut.
Reconnect the articulated coupling 3) to the graduated
sector 4).
In extended head models, unscrew the extensions and
reposition them in the appropriate space; tighten the screws
2)(Fig. 11) on the slide bars.
Reposition the cover 2)(Fig. 37) and fix with the screw
1)(Fig. 37).
7.5
Electrical panel maintenance
If it is necessary to carry out maintenance on the electrical panel
1)(Fig. 38), it is possible to remove only the fan unit 2)(Fig. 38),
to allow improved access to the electrical components.
With the burner open as in Fig. 37, unhook the tie-rod 3)(Fig. 38),
removing the screw on the adjustable profile cam, and extract it
from the tip 4)(Fig. 38).
At this point, disconnect the cables relating to the air pressure
switch, the servomotor and fan motor.
Remove the 3 screws 5)(Fig. 38) positioned on the protective
cover.
Removing the 2 screws 6)(Fig. 38), it is possible to unthread the
fan unit 2)(Fig. 38) from the slide bars 7)(Fig. 38).
Finally, you can use 2 of the 3 screws 5)(Fig. 38) to fix the
electrical panel to the pipe coupling, in the points indicated in
Fig. 39, and then carry out the maintenance operations.
DANGER
Disconnect the electrical supply from the burner
by means of the system main switch.
DANGER
Close the fuel shut-off valve.
Wait for the components in contact with heat
sources to cool down completely.
ATTENTION
Assemble the inner part of the combustion head
by tightening the screw 8)(Fig. 37) to a tightening
torque of
4 ÷ 6 Nm
Fig. 37
D3846
After carrying out maintenance, cleaning or
checking operations, reassemble the cover and
all the safety and protection devices of the burner.
D3876
Fig. 38
Fig. 39
D9578
