Servomotor Adjustment; Disengage The Gears Of The Servomotor; Cams Adjustment; Servomotor Positioning - Riello RS 190/M Installation, Use And Maintenance Instructions

5.4

Servomotor adjustment

135
5.4.1

Disengage the gears of the servomotor

Switch off the burner using the switch 1)(Fig. 38),
OFF position.
Release the mechanical cam 8)(Fig. 35, page 27)
WARNING
to separate the gears of the servomotor, pressing
and shifting downwards the button D) (Fig. 37) and
by manually turning the mechanical cam 8)(Fig. 35,
page 27) backwards and forwards.
We recommend binding the mechanical cams 8)
again (Fig. 35, page 27) to the servomotor by shift-
ing upwards the button C) (Fig. 37).
5.5

Burner start-up

Close the control circuit and set switch 1)(Fig. 38) to "MAN". As
soon as the burner starts check the direction of rotation of the fan
blade, looking through the flame inspection window 14)(Fig. 4,
page 11).
20160742
Start-up, calibration and operation of the burner
D
0
28
B
5.4.2

Cams adjustment

For adjusting the cams, see A) (Fig. 37).
Proceed with care and without forcing. It is necessary a small flat
screwdriver and turn clockwise or counter-clockwise to the desired
position, indicated by the graduated scale and the index on the
cam.
5.4.3

Servomotor positioning

During the adjustment operations, pay attention to the correct po-
sitioning of the servomotor; the correct index is that one indicated
in E) (Fig. 37).
1
GB
20161833
C
A
20162488
+
AUT
2
MAN -
Fig. 37
Fig. 38