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13.5 Replacement of damper motor, air
1.
Disconnect the main power and shut off the fuel supply.
!
Before obtaining access to terminals,
all supply circuits must be disconnected.
Disconnect the damper motor cable from the automatic control unit.
2.
Remove the screws (I) holding the damper motor and loosen screws
3.
(F) to the damper motor mounting plate.
4.
Lift up the damper motor.
5.
Remove (H) the control arm from the motor shaft.
6.
Remove the damper motor from the mounting plate (J).
7.
Install the new damper motor on the mounting plate.
Damper motor SQM must be connected and supplied with
!
power before installation to ensure that the motor shaft and
direction of rotation are set correctly.
Fit the control arm on the damper motor shaft. It is important that the
8.
screw is perpendicular to the plane of the shaft.
Refit the damper motor and mounting plate on the air intake. Ensure
9.
that the damper shaft and control arm are connected correctly.
10.
Connect the damper motor cable to the automatic control unit.
11.
Switch on the main power.
12.
Adjust the home position for the damper motor by moving the
damper motor back and forth in the adjustment groove. Lock the
damper motor with screws (I), in a position where the damper is close
to the mechanical stop in the fan housing but still has a small air gap.
NOTE! When resetting dampers, ensure that they do not
!
engage in the close damper position. If dampers do engage,
the automatic control unit will report an error message.
13.
Disconnect the main power.
14.
Complete the burner assembly.
15.
Switch on the main power and open the fuel supply.
16.
Start burner and check/adjust combustion.
When servicing/replacing components that affect combustion,
!
flue gas analysis and soot test must be carried out following
installation.
I
F
J
H
172 615 56-3
Bentone
109
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