Table of Contents
Advertisement
5
Hydraulic systems
5.1
Light oil supply
Explosion danger due to fuel leaks in the pres-
ence of a flammable source.
Precautions: avoid knocking, attrition, sparks and
heat.
Make sure the fuel interception tap is closed be-
fore performing any operation on the burner.
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
WARNING
The burner is designed to allow entry of the hoses-lines on
either side of the burner.
5.1.1
Pump
The pump is designed to allow working with two pipes.
In order to obtain one pipe working it is necessary to unscrew the
return hose, remove the by-pass screw 3) and then screw the re-
turn plug 2).
1
8
1
2
Key (Fig. 10)
1
Suction line
2
Return line
3
By-pass screw
4
Gauge connection
2 nd stage pressure
5
adjuster
2903397
Hydraulic systems
10
9
2
7
6
5
4
3
D10987
Fig. 10
6
Suction gauge connection
1 st stage pressure adjuster
7
8
Auxiliary pressure test
point
2 nd stage valve
9
1 st stage valve
10
Where gas oil containing bio diesel is in use, it is
recommended to avoid over oxygenation of the
blended fuels.
WARNING
Where at all possible avoid the use of two pipe
systems where the circulated fuel is returned to
the tank.
If this cannot be avoided make sure that the return
pipe is normally below the surface of the fuel level
within the storage tank. See Fig. 11.
The suction plug 1) is made of plastic. Once re-
moved, it must not be used again.
In single pipe installations, the plug in the return
WARNING
line 2) must be totally in steel.
In case of use with gas oil containing up to 10%
Bio blend, it will be essential to use flexible oil
lines suitable for bio fuel use.
WARNING
Please contact Riello for further information.
It is strongly recommended a periodic check of
the pump pressure operation (annually or better
every six months, if the burner operation is contin-
uous).
DANGER
If the value is lower than 1 bar, compared to that
one of the initial setting, please check the cleaning
of the pump and line filters.
In case the pressure setting was not restorable,
please replace the pump, in order to guarantee
that the pump pressure during the pre-purge time
is at least 3.7 bar.
12
GB
Advertisement
Table of Contents
