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7.2.6
Positioning the rpm sensor
In the event the rpm sensor is malfunctioning or
needs replacing, check/reset its position inside
the fan motor cover.
WARNING
To adjust, proceed as follows:
loosen the screws 3) and rest the sensor against the plate of
the disc 2);
referring to the scale 4) draw back the rpm sensor by about
a notch so that there is a distance of about 2 mm from the
disc plate 2).
Having correctly positioned the RPM sensor 1), tighten the
screws 3) with a torque of approximately 5±0.5 Nm.
Key (Fig. 46)
1
Rpm sensor
2
Disc
3
Screw
4
Scale
7.2.7
Pump unit
Prior to performing any operations/maintenance
on the pump unit, make sure the electrical power
supply to the burner is turned off by means of the
system's main switch.
WARNING
Maintenance
20087860
Fig. 46
39
GB
20124030
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