Riello GAS 6 P/M, Инструкции по установке, использованию и обслуживанию

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2 - SERVOMOTOR
The servomotor controls the air damper and the gas throttle valve.
It is provided with three adjustable cams controlling the related change-over switches.
1) 1
st
cam (blue) 6) Cam with adjustable profile
2) 2
nd
cam (red) 7) Adjustable profile
3) 3
rd
cam (black) 8) Fastening screws
4) Pointer 9) Adjusting screws
5) Motor reset button
1
st
cam: it controls the min. stroke and remains always positioned on 0°, in this way, when the burner is off the air
damper is totally closed.
2
nd
cam: it controls the max. stroke, generally it is positioned on 130°.
3
rd
cam: it controls the minimal modulating power.
It is set by the factory on 30°: normally this position is the most suitable for the first ignition. Thereafter the
installer may vary this setting accordingly with the installation requirements.
10) Throttle valve control sector
11) Tension rod
12) Gas adjustment shutter