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5.12
Pump
In case of use with gas oil containing up to 10%
Bio blend, it will be essential to use flexible oil
lines suitable for bio fuel use.
WARNING
Please contact Riello for further information.
RL 28/M
RL 38-50/M
1
Suction
2
Return
3
Pressure gauge attachment
4
Vacuum meter attachment
5
Pressure governor
5.12.1 Technical data
A
kg/h
B
bar
C
bar
D
cSt
E
°C
F
bar
G
bar
H
mm
Key (Tab. H)
A
Min. delivery rate at 20 bar pressure
B
Delivery pressure range
C
Max. suction depression
D
Viscosity range
E
Max light oil temperature
F
Max. suction and return pressure
G
Pressure calibration in the factory
H
Filter mesh width
SUNTEC ALV75C
SUNTEC ALV95C
D1239
G 1/4"
G 1/4"
G 1/8"
G 1/8"
ALV75C
ALV95C
74
99
10 - 20
10 - 20
0,45
0,45
2 - 12
2 - 12
60
60
2
2
20
20
0,150
0,150
Installation
5.12.2 Pump priming
Before starting the burner, make sure that the
tank return line is not clogged.
Obstructions in the line could cause the seal-
WARNING
ing organ located on the pump shaft to break.
(The pump leaves the factory with the by-pass
closed).
–
Also check to make sure that the valves located on the suc-
tion line are open and that there is sufficient fuel in the tank.
–
For self-priming to take place, one of the screws 3)(Fig. 16)
of the pump, must be loosened in order to bleed off the air
contained in the suction line.
–
Start the burner by closing the control devices with switch
1)(Fig. 17) in the "MAN" position. As soon as the burner
starts, check the direction of rotation of the fan blade, by look-
ing through the flame inspection window 19)(Fig. 4 at
page 12).
–
The pump can be considered primed when the light oil starts
coming out of the screw 3)(Fig. 16). Stop the burner: switch
Fig. 16
1)(Fig. 17) set to "OFF" and tighten the screw 3).
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.
After 5 or 6 starting operations allow 2 or 3 minutes for the trans-
former to cool.
Tab. H
The a.m. operation is possible because the pump
is already full of fuel when it leaves the factory.
If the pump has been drained, fill it with fuel
WARNING
through the opening on the vacuum 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.
19
GB
1
2
D791
Fig. 17
20033316
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