Pump; Technical Data; Pump Priming - Riello RLS 300/BP MX Installation, Use And Maintenance Instructions

5.15

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.
Key (Fig. 17)
1 Suction
2 Return
3 Pressure switch attachment
4 Vacuum meter attachment
5 Pressure adjustment screw
6 Screw for by-pass
7 Pressure gauge attachment

5.15.1 Technical data

Suntec TA2
Min. delivery rate at 12 bar pressure
Delivery pressure range
Max. suction depression
Viscosity range
Max. gas oil temperature
Max. suction and return pressure
Pressure calibration in the factory
20036762
Installation
D3255
Fig. 17
G 1/2"
G 1/2"
G 1/8"
G 1/8"
G 1/4"
kg/h 480
bar 7 - 40
bar 0.45
2
3 - 75
mm /s (cSt)
°C 140
bar 5
bar 30
Tab. K
22

5.15.2 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).
– For self-priming to take place, the screw 4)(Fig. 17) of the
pump must be loosened in order to bleed off the air contained
in the suction line.
– Start the burner by closing the remote controls. Check the fan
wheel rotation direction as soon as the burner starts.
– The pump is primed when gas oil comes out of screw
4)(Fig. 17). Stop the burner and screw screw 4) in.
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.
Do not illuminate the UV cell or the burner will lock out; the burner
should lock out anyway about 10 seconds after it starts.
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
4)(Fig. 17) 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
GB