Pump; Technical Data; Priming Pump - Riello RL 25/1 BLU Instrucciones De Instalación, Funcionamiento Y Mantenimiento

5.9

Pump

5.9.1

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
Key to layout (Fig. 21)
1 Suction line G 1/4"
2 Return line with screw for by-pass G 1/4"
3 Outlet at the nozzle G 1/8"
4 Gauge connection G 1/8"
5 Vacuometer connection G 1/8"
6 Low pressure adjustment screw
7 High pressure adjustment screw
8 Pressure outlet or gauge connection
9 Low/high pressure selector valve
10 Safety valve
20156111
Installation
5.9.2
D1475
WARNING
WARNING
 Make sure that the valves on the suction line are open and
 In order for self-priming to take place, one of the screws 4) -
Fig. 21
 Start the burner closing the control devices and the electric
 The pump can be considered to be primed when the light oil
The time required for this operation depends on the diameter and
the length of the suction line pipe. If the pump fails to prime at first
start-up and the burner locks out, wait approx. 15 seconds, reset
the burner, and then repeat the start-up operation as often as re-
quired.
After 5 or 6 start up operations allow 2 - 3 minutes for the trans-
former to cool.
WARNING
20 GB
SUNTEC AT2 55C
60 kg/h
8 - 25 bar
0.45 bar
2 - 12 cSt.
60°C
2 bar
High Pressure: 22 bar
Low pressure: 9 bar
0.150 mm

Priming pump

Before starting the burner, make sure that the tank
return line is not obstructed. Any obstructions in
the pipe can damage the sealing organ on the
pump shaft.
The pump leaves the factory with the by-pass
closed.
that there is enough fuel in the tank.
8) of the pump must be loosened in order to bleed off the air
contained in the suction line.
line switch. The pump must rotate in the direction of the
arrow marked on the cover.
starts coming out of screw 4) or 8).
Stop the burner and tighten screw 4) or 8).
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 vacuom-
eter 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.
Tab. H