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6
Hydraulic systems
6.1
Hydraulic circuits
Explosion danger due to fuel leaks in the
presence of a flammable source.
Precautions: avoid knocking, attrition, sparks and
heat.
Make sure the fuel shut-off valve is closed before
performing any operation on the burner.
PR2
Key
S -
Pump with filter and pressure regulator (high
pressure)
st
VR1 (NO)
1
stage oil return valve normally open
nd
VR2 (NO)
2
stage oil return valve normally open
AD2
Air damper hydraulic jack for the 2
st
PR1
1
stage oil regulator (low pressure)
nd
PR2
2
stage oil regulator (high pressure)
GV
Valve unit
U
Nozzle
Hydraulic systems
PR1
VR 1
S
20047228
nd
stage
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
WARNING
GV
VR 2
AD
2
11
GB
U
Fig. 9
20163551
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