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HYDRAULIC SYSTEM
WARNING ONLY FOR TWO PIPE SYSTEM: before starting the burner make sure that the return
pipe-line is not clogged: any obstruction would cause the pump seals to break.
WARNING:
The pump is supplied for use with a one pipe system.
For use on a two pipe system, it is necessary to screw the by-pass
screw (A), hang up to the pump.
D5219
H = Difference of level.
L = Max. length of the
suction line.
I.D.= Internal diameter of the
oil pipes.
D5220
A metal bowl filter with replaceable micronic filter must be fitted in the oil supply pipe.
Check periodically the flexible pipes conditions. Using kerosene, they have to be replaced at
least every 2 years.
2403
H
meters
0.5
1
1.5
2
PRIMING THE PUMP
Loosen the plug of the vacuum gauge (5, fig. 1) and
wait until the fuel flows out.
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
4
L meters
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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