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6.3
Adjustment fan motor covering with external rpm
To calibrate the rpm sensor 6)(Fig. 55), proceed as follows:
remove the cover 1) unscrewing the screws 2);
unscrew or screw the nuts 3) - 5) and the rpm detection disc 4)
so that its distance from the rpm sensor 6) is about 2 mm.;
place the plate 4) on the nut 5) and fix with the lock nut 3);
close the cover 1) by screwing the screws 2).
20199522
Key (Fig. 55)
1 - Cover
2 - Screws for cover fixing
3 - Lock nut
6.4
Opening the burner
Disconnect the electrical supply from the burner by
means of the main system switch.
DANGER
Close the fuel interception tap.
DANGER
6.5
Closing the burner
Refit following the steps described but in reverse order; refit all
burner components as they were originally assembled.
Maintenance
4 - Rpm detection disc
5 - Lower nut
6 - Rpm sensor
Wait for the components in contact with heat sourc-
es to cool down completely.
For the burner opening, see "Access to head internal part" on
page 22.
After carrying out maintenance, cleaning or check-
ing operations, reassemble the cover and all the
safety and protection devices of the burner.
45
GB
Fig. 55
20142253
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