LB 429
Blu 170 ÷ 350 P /P AB
B
pag.19
HEAD POSITION
SETTING THE FIRING HEAD
BLU 170 - 250
POWER
BLU 170 - 250 AB
MIN.
AVERAGE
MAX.
G 20 - 25
1
3
4
G 30 - 31
1
4
5
Two stages AIR SERVOMOTOR
( LANDIS & STAEFA SQN 70 )
Remove cover to enter the adjusting cams. Adjust cams through the suitable key (on issue)
and a screwdriver.
I - Adjusting cam (RED) for opening position in
High Flame (max. output)
II - Adjusting cam (BLUE) for air damper
position on burner’s shutdown
III - Adjusting cam (ORANGE) for opening
position in Low Flame
(by the screwdriver)
IV - Adjusting cam (BLACK) to allow the opening of High flame solenoid valve.
AIR ADJUSTEMENT ON-OFF version
To adjust the inlet air flow:
-
Loosen screw
A
.
-
Turn air damper
B
through lever
C
, till to
obtain the proper air flow, determined
through a combustion analysis.
-
Tighten screw
A
.
MANUAL
RELEASE
SWITCH
B
C
A
Adjustment of the head position allows the combustion parameters to be optimized. The head is adjusted by turning the screw
shown in the figure.
NOTE: THE FIRING HEAD IS ADJUSTED IN BACKWARD POSITION FOR PACKING PURPOSES
1
2
3
4
5
6
7
REMOVING THE BLAST TUBE
BLU 350 / BLU 350 AB
BLU 170-250 / BLU 170-250 AB
