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HYDraULiC Diagram aCCOrDing TO sTanDarD en 267
1 1
st
stage nozzle
2 2
nd
stage nozzle
3 Spray nozzle unit support with adjustable closing device
4 1
st
stage nozzle closing device (calibrated at 16 bar)
4/1 2
nd
stage nozzle closing device (calibrated at 16 bar)
5 80 W-heating element (only for heavy oil burner models)
6 Closing device adjustment screw
7 Normally open 1
st
stage solenoid valve
8 Normally closed 2
nd
stage solenoid valve
FRONT VIEW
9 Normally closed solenoid valve
10 Normally closed solenoid valve
11 Pump (set to 27 bar)
12 Return
13 Intake
14 Air regulation servomotor
15 Safety oil pressure switch 0-25 bar (set to 5 bar)
EQUIPMENT FEATURES
Equipment and relevant
programmer
Safety time
in seconds
Pre-ventilation and washing
time in seconds
Post-ignition
(in seconds)
Time between 1
st
and
2
nd
stage in seconds
LAL 1.25
Cyclic relay
5
22.5
15
7.5
Summary of Contents for BT 250 DSG 4T
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