Table of Contents
Advertisement
Available languages
Available languages
3.3
HYDRAULIC SYSTEMS
WARNING:
The burner is designed to accommodate the installation of
light oil supply pipes on either side.
It is necessary to install a filter on the fuel supply line.
The pump is designed to allow working with two pipes. In
order to obtain one pipe working it is necessary to unscrew
the return plug (2), remove the by-pass screw (3) and then
screw again the plug (2). (See fig. 7).
Before starting the burner make sure that the return pipe-
line is not clogged. An excessive back pressure would
cause the damage of the pump seal.
Fig. 6
*
PRIMING PUMP:
On the system in fig. 6 it is sufficient to loosen the suction gauge connec-
tion (6, fig. 7) and wait until oil flows out.
On the systems in fig. 8 and 9 start the burner and wait for the priming.
Should lock-out occur prior to the arrival of the fuel, await at least 20 sec-
onds before repeating the operation.
The pump suction should not exceed a maximum of 0.4 bar (30 cm Hg).
Beyond this limit gas is released from the oil. Oil pipes must be completely
tight.
In the vacuum systems (fig. 9) the return line should terminate within the oil
tank at the same level as the suction line. In this case a non-return valve is
not required. Should however the return line arrive over the fuel level, a
non-return valve is required. This solution however is less safe than previ-
ous one, due to the possibility of leakage of the valve.
*
ONLY FOR ITALY : Automatic shut-off device as per Ministry of Internal Affairs' regulation no. 73 dated 7/29/71 .
*
H = difference of level;
3193
SYSTEM
NOT PERMITTED
IN GERMANY
D6328
Fig. 8
L = max. length of the suction line;
8
1
2
3
L meters
H
ø i
ø i
meters
8 mm
10 mm
0,5
10
20
1
20
40
1,5
40
80
2
60
100
5
GB
D5487
4
5
1 - Suction line
2 - Return line
3 - By-pass screw
4 - Gauge connection
5 - Pressure adjuster
6 - Suction gauge connection
7 - Valve
8 - Auxiliary pressure gauge
L meters
H
ø i
meters
8 mm
0
35
0,5
30
1
25
1,5
20
2
15
3
8
3,5
6
Fig. 9
*
I. D. = internal diameter.
Fig. 7
6
7
ø i
10 mm
100
100
100
90
70
30
20
D6329
Advertisement
Chapters
Table of Contents
