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OIL LINES
WARNING: before starting the burner make sure that the return pipe-line is not clogged: any ob-
struction would cause the pump seals to break.
D5493
D5219
D5376
A filter must be installed on the suction fuel line.
ONLY FOR ITALY: Automatic shut-off device as per Ministry of Internal Affairs' regulation no. 73
H = Difference of level; L = Max. length of the suction line; I.D. = Internal diameter of the oil pipes.
1718
SYSTEMS NOT PERMITTED IN GERMANY
meters
The pump vacuum should not
exceed a maximum of 0.4 bar
(30 cm Hg).
Beyond this limit gas is released
from the oil.
Oil lines must be completely
airtight. The return line should
terminate in the oil tank at the
same level as the suction line;
in this case a non-return valve is
not required.
When the return line arrives over
the fuel level, a non-return valve must be used.
This solution however is less safe than previous one, due to
the possibility of leakage of the valve.
Priming the pump
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.
dated 7/29/71.
L meters
H
I.D.
I.D.
8 mm
10 mm
0.5
10
20
1
20
40
1.5
40
80
2
60
100
WARNING
The pump is supplied for use with a two pipe sys-
tem. For use on a one pipe system, it is neces-
sary to remove the by-pass screw (A).
Priming the pump
Loosen the plug of the vacuum gauge (5, fig. 1,
page 1) and wait until the fuel flows out.
3
GB
A
D5809
L meters
H
I.D.
I.D.
meters
8 mm
10 mm
0
35
100
0.5
30
100
1
25
100
1.5
20
90
2
15
70
3
8
30
3.5
6
20
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