Riello RL 50 - Pump; Technical data; Pump priming

6423
20
GB
Hydraulic system
6.3 Pump
Key (Fig. 20)
1 Suction line G 1/4"
2 Return line G 1/4"
3 Gauge connection G 1/8"
4 Vacuometer connection G 1/8"
5 Pressure adjustment screw
6.3.1 Technical data
Tab. I
6.3.2 Pump priming
– In order for self-priming to take place, one of the screws 3)
(Fig. 20) 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 switch
1)(Fig. 21) in the "ON" position. The pump must rotate in the
direction of the arrow marked on the cover.
– The pump can be considered to be primed when the gas oil
starts coming out of the screw 3).
– Stop the burner: switch 1)(Fig. 21) 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.
And so on. After 5 or 6 starting operations allow 2 or 3 minutes
for the transformer to cool.
Do not illuminate the photocell or the burner will lock out; the
burner should lock out anyway about 10 seconds after it starts.
WARNING
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.
Please contact Riello for further information.
Suntec AL75CK
Min. delivery rate at 12 bar pressure kg/h 88
Delivery pressure range bar 8 - 15
Max. suction depression bar 0.45
Viscosity range mm
2
/s (cSt) 1 - 12
Max. gas oil temperature °C 60
Max. suction and return pressure bar 2
Pressure calibration in the factory bar 12
Filter mesh width mm 0.15
D8621
Fig. 20
WARNING
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.
(The pump leaves the factory with the by-pass
closed).
WARNING
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 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.
Fig. 21
Off 1
st
2
nd
12
On
Burner Stage
D469