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HYDRAULIC SYSTEM
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.
Important: The pump is supplied for use with a two pipe system.
For use on a one pipe system, it is necessary to remove
the by-pass screw (A), (see figure).
D5836
H = Difference of level.
L = Max. length of the
suction line.
I.D.= Internal diameter of the
oil pipes.
D5837
A filter must be installed on the suction fuel line.
Automatic shut-off device in compliance with the Interior's Ministry Memorandum No. 73 of 29/7/71.
2127
H
meter
0.5
1
1.5
2
L meter
H
I. D.
I.D.
meter
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
4
GB
L meter
I. D.
I.D.
8 mm
10 mm
10
20
20
40
40
80
60
100
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 seconds
before repeating the operation.
A
D5199
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