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5.13.1 Pump
Technical data
Pump
Min. delivery rate at 12 bar pressure
Delivery pressure range
Max. suction depression
Viscosity range
Max. light oil temperature
Max. suction and return pressure
Pressure calibration in the factory
Filter mesh width
D1251
1
Suction line
2
Return line
3
Gauge connection
4
Vacuometer connection G 1/8"
5
Pressure adjuster
6
By-pass screws
5.13.2 Priming pump
Before starting the burner, make sure that the
tank return line is not clogged.
Obstructions in the line could cause the seal-
ing organ located on the pump shaft to break.
WARNING
WARNING
Make sure that the valves on the suction line
are open and that there is fuel in the tank.
Since the pump can self-ignite, it is essential to loosen the screw
3)(Fig. 30) of the pump to vent the air from the suction line.
Select the fuel by positioning the selector (Fig. 31) to "OIL".
Start the burner by closing the remote control, with the selec-
tor 9)(Fig. 5 on page 12) in position "1".
The pump can be considered to be primed when the light oil
starts coming out of the screw 3)(Fig. 30).
Stop the burner: position the selector 9)(Fig. 5 on page 12)
in the "OFF" position and tighten the screws 3) of the pump.
The time required for this operation depends upon the diameter
and length of the suction tubing.
If the pump fails to prime at the first starting of the burner and the
burner locks out, wait approx. 15 seconds, reset the burner, and
then repeat the starting operation as often as required. And so
on.
20121288
J7C
230 kg/h
10 - 21 bar
0.45 bar
2.8 - 200 cSt
90 °C
1.5 bar
12 bar
0.175 mm
Fig. 30
G 1/2"
G 1/2"
G 1/8"
Installation
After 5 or 6 starting operations allow 2 or 3 minutes for the trans-
former to cool.
Do not illuminate the flame sensor or the burner will lock out; the
burner should lock out anyway about 10 seconds after it starts.
Tab. N
The above-mentioned operation is possible be-
cause the pump is already full of fuel when it
leaves the factory. If the pump has been drained,
fill it with fuel through the opening on the vacuum
WARNING
WARNING
meter prior to starting; otherwise, the pump will
seize.
Whenever the length of the suction piping ex-
ceeds 20-30 meters, the supply line must be filled
using a separate pump.
28
GB
EXT
OIL
GAS
20108975
Fig. 31
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