Air Damper Adjustment; Electric Panel - Riello P 140 T/G Installation, Use And Maintenance Instructions

6. AIR DAMPER ADJUSTMENT

The air dampers adjustment shall be set each time in relation with the nozzles delivery and the combustion chamber
pressurization.
Fig. 2
Fig. 2 shows the placement of the air dampers as fig. 3 their correspondent hydraulic jacks.
To open or close the air dampers proceed as follows:
loose the ring nut 1), turn clockwise the exagonal body 2) in order to decrease the air flow,
and counterclockwise to increase it.
The right adjustment of the air dampers may be detect by checking the combustion results
in the three stages of burner operation.
To check the combustion during the different stages, the commutator should be set to the
position corresponding to the burner stage to be controlled.

7. ELECTRIC PANEL

HOURCOUNTER
Deducting the number of hours of 2
could know how many hours the burner has been performing only at 1
formance hours of the 2
hourcounter.
rd
The hours of 3 stage operation are shown rightly on the 3
COMMUTATOR
Pos. 0: Burner stop
Pos. 1: Burner operation only at 1
Pos. 2: Burner operation at 1
Pos. 3: Burner operation at 1
MOTOR LOCK-OUT
It is caused by the overload relay in case of overload or no electic supply.
Release by pressing the pushbutton on thermal relay.
1
2
3
nd
nozzle hourcounter from those indicated in the 1
nd
stage alone, deduct from the 2
st
stage
st nd
and 2 stage
st nd rd
, 2 , 3
st
stage air damper
nd
stage air damper
rd
stage air damper
st
1 nozzle hourcounter with operation signal
nd
2 nozzle hourcounter with operation signal
rd
3 nozzle hourcounter with operation signal
Motor lock-out signal
4 positions commutator
Control box lock-out signal with re-set
push-button
st
nd
stage hourcounter the hours indicated in the 3
rd
nozzle hourcounter.
stage
49
Fig. 3
rd
3 stage hyd. jack
nd
2 stage hyd. jack
st
1 stage hyd. jack
st
nozzle hourcounter you
stage; the same procedure to detect the per-
rd
nozzle