Riello EMME 1400, Installation, Use And Maintenance Instructions

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2915041
12 GB
AIR DAMPER ADJUSTMENT
Air damper adjustment is performed by acting on the variable pro-
file cam. This operation is performed after having adjusted the
pressure variator and the combustion head.
With the burner on, remove voltage from the servomotor, detach-
ing the fast-on pin located on the electrical control panel, and re-
lease movement by pressing on release 5)(Fig. 9).
Calibrate maximum output, minimum output and intermediate
outputs in this order.
Having completed the adjustment, re-check all calibrations, reset
the electrical connections of the servomotor and secure the ad-
justment screws with the crossways screws.
Modifying air damper tie-rod length
It is recommended to extend the tie-rod when the air gate valve
moves within a reduced angle (air damper at about half travel of
maximum output); this helps avoid giving the cam too curved a
profile.
With the burner off, proceed as follows:

detach ball-joint 2) from lever 1);

unscrew extension 3) a few turns from tie-rod 4);

reconnect the ball-joint to the lever and raise the cam profile
until the air damper index returns to 0 with the servomotor
at 0°.
ELECTRICAL CURRENT TO THE FLAME SENSOR
Minimum value for correct operation: 70 µA
If a lower value is read, it may be caused by:

exhausted sensor;

low voltage (less than 187 V);

poor burner adjustment.
To measure the electrical current to the sensor, use a 100 µA d.c.
microamperometer connected in series to the sensor itself, as
shown in the diagram, with a 100 µF 10 V d.c. capacitor in parallel
to the instrument.
Fig. 14
S7971
Fig. 15
S7973
Lever 1)
Ball-joint 2)
Extension 3)
Tie-rod 4)
Fig. 16
D1143