Pump; 5.13.1 Technical Data; 5.13.2 Priming Pump - Riello RL 190/M Installation, Use And Maintenance Instructions

5.13

Pump

5.13.1 Technical data

Pump
Min. delivery rate at 20 bar pressure
Delivery pressure range
Max. suction depression
Viscosity range
Max. light oil temperature
Max. suction and return pressure
Pressure calibration in the factory
1 Suction line
2 Return line
3 Pressure gauge connection G 1/8"
4 Vacuometer connection
5 Pressure adjustment
6 By-pass screw

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 sealing organ
located on the pump shaft to break.
– In order for self-priming to take place, the screw 3)(Fig. 22) 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 and with the
switch 1)(Fig. 23) in "MAN" position.
As soon as the burner starts, check the direction of rotation
of the fan impeller, looking through the flame inspection
window 19)(Fig. 5).
– The pump can be considered to be primed when the light oil
starts coming out of the screw 3). Stop the burner: set switch
1)(Fig. 23) to "OFF" and tighten the screw 3)(Fig. 22).
kg/h
bar
bar
cSt
°C
bar
bar
G 1/2"
G 1/2"
G 1/8"
1 2
D791
Installation
The time required for this operation depends upon the diameter
and length of the suction tubing.
TA3
If the pump fails to prime at first start-up and the burner locks out,
665
wait approx. 15 seconds, reset the burner, and then repeat the
7 - 40
start-up operation. And so on.
0.45
After 5 or 6 starting operations allow 2 or 3 minutes for the
4 - 800
transformer to cool.
140
5
30
ATTENTION
Tab. I
Whenever the length of the suction piping exceeds 20-30 meters,
the supply line must be filled using a separate pump.
D1979
Fig. 22
Fig. 23
23 GB
The above-mentioned 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
through the opening on the vacuum meter prior to
starting; otherwise, the pump will seize.
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