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6.7.1
Adjusting the servomotors
S = Nominal value of the channel
I = Actual value of the channel
X = Curve data for this point already available
Upon every change the actuators move to the new set position.
If present, to set channel 4 (VSD), the fan motor must be
operating. The nominal value feedback curve of channel 4 must
always rise.
Confirm the point by pressing ENTER.
The purpose is to reach point "999" to adjust/set the maximum
operating output.
This value can be modified to obtain the desired maximum
operating output.
If the gas pressure is not sufficient, despite the maximum 90°
opening of the gas servomotor, it is necessary to act on the gas
valve stabiliser.
When adjusting each point, act on the air and gas servomotor,
but do not modify the gas valve stabiliser position.
In the middle of the procedure (i.e. at points "400" or "500"), it is
advisable to measure the gas flow and check that the output is
about 50% of the maximum output.
If this is not the case, also act on the gas valve stabiliser: in this
case, however, the settings of all the previously set points must
be re-checked.
When the calibration of minimum point "200" is complete, exit the
menu and return to the main screen.
At the end of the "Start-up procedure" it is
necessary to proceed to execute a "Backup"
which is necessary to store the parameters and
data present in the control box inside the display.
WARNING
This operation allows restoring the parameters
and the modulation curve points in case of
problems.
It is recommended to backup every time a
parameter is edited!
For the procedure refer to paragraph "Backup /
Restore Procedure" on page 36.
E-display control
S9984
35
GB
20171664
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