Combustion Head Adjustment - Riello PRESS 450 T/N Installation, Use And Maintenance Instructions

4.4

COMBUSTION HEAD ADJUSTMENT

On the base of the maximum delivery detect, from dia-
gramm C, the combustion head adjustment.
The adjustment should be made by turning the screw A
till the set-point (see diagram) is on the line with the
washer B.
DIFFUSER
D2809
DISC
DAMPER RING
4.5 AIR SHUTTERS ADJUSTMENTS
The adjustment of the air shutters shall be set each
time, with reference to the nozzles deliveries and the
combustion chamber pressurization.
Fig. 2 shows the positioning of the air shutters.
Fig. 3 shows the positioning of the cams of the motor.
st
1 STAGE ADJUSTMENT:
it must carry out manually.
nd rd
2 - 3 STAGE ADJUSTMENT:
its must carry out by the motor cams with a little screw-
driver. The motor follows each moving of the cams au-
tomaticly.
Cams command air shutters adjustments
Cam 0: adjustment not necessary. Positioned by
the factory on the close shutters.
nd
Cam ST2: for 2 stage air shutters adjustment.
All group A) moves by acting on cam ST2,
(fig. 3).
rd
Cam ST3: for 3 stage air shutters adjustment.
All group B) moves by acting on cam ST3,
(fig. 3).
Cams command valves adjustment
st
1 valve: controlled by the control box.
nd
2 valve: controlled by the cam MV2.
Act on the cam MV2 to open the valve before
the shutter reach the 2
rd
3 valve: controlled by the fixed cam next the cam
ST3.
NOTE: Never adjust the cams with sealed screws.
5845
B
Set-point 6
A
nd
stage position.
10
kg/h
C
1 Diffuser disc without damper ring
2 Diffuser disc with damper ring
Fig. 2
D2774
nd
Air shutter position 2 and 3
nd rd
2 and 3 stage air shutter motor
st
Sector A 1 stage air shutter
Fig. 3
GB
D2808
Set-point
rd
stage