Lamborghini Caloreclima ECO 15 Manual Para La Instalación Y El Mantenimiento página 36

GEARED MOTOR CONTROLLING AIR DELIVERY (ECO 15/2 - ECO 20/2)
The geared motor limit switch and auxiliary contacts are triggered by easily accessible adjustable cams, which
can be set against o graduated scale.
SETTING THE CONTACT TRIGGERING POINT
General information:
CAM ST2 (red) - Cam controlling air valve fully open position (maz. firing rate with both stages in operation).
CAM ST1 (blue) - Cam controlling minimum air flow condition (min. firing rate 1st stage only in operation).
CAM MV (black) - Auxiliari cam activating the 2nd stage valve.
RECOMMENDATIONS TO PROPERLY SET THE GEARED MOTOR
The geared motor is set upon testing as follows:
CAM ST2: is set on approx 60°.
CAM ST1: is set in such a way that the air shut-off valve is set at 15° to 30°.
CAM MV: is set in such a way that the 2nd stage valve opens when the air shut-off valve is at 30° to 45°.
The above settings can be adjusted when installing the unit also while the burner is in operation as follows:
CAM ST2: Rotate the cam clockwise to open the air intake valve (+); rotate the cam counterclockwise (-) to
close the air intake valve.
CAM ST1: Rotate the cam clockwise (+) to open the air intake valve rotate the cam counterclockwise (-) to
close air flow rate.
CAM MV: Rotate the cam clockwise (+) to delay opening of the 2nd stage solenoid valve rotate the cam
counterclockwise (-) to advance valve opening.
Fig. 10
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