Pump - Riello RLS 28/M Installation, Use And Maintenance Instructions

4.8.4

Pump

Pump model AL 65
Min. delivery rate at 174 PSI pressure
Delivery pressure range
Max. suction pressure
Viscosity range
Max light oil temperature
Max. suction and return pressure
Pressure calibration in the factory
Filter mesh width
Key (Fig. 16)
1 Suction
2 Return
3 Pressure gauge attachment G 1/8"
4 Vacuum gauge attachment
5 Pressure regulator
Priming pump
Before starting the burner, make sure that the
tank return line is not clogged.
Obstructions in the line could cause the pump
WARNING
seal 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 suction 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 circuit, with switch 21)(Fig. 5,
page 12) in the "MAN" position, and with switch 24) in the "OIL" po-
sition.
The pump is primed when the fuel oil starts coming out of the screw
3)(Fig. 16). Stop the burner: switch 1) set to "OFF" and tighten the
screw 3).
The time required for this operation depends upon the diameter
and length of the suction tubing.
20019893
Installation
GPH 21.5
PSI 58 - 216
"Hg 13
cSt 2 - 12
°F 140 - 60
PSI 29
PSI 174
inch 0.006
D2542
Fig. 16
1/4" NPT
1/4" NPT
G 1/8"
20
If the pump fails to prime at the first starting of the burner and the
burner locks out, reset the burner, and then repeat the starting op-
eration.
Do not illuminate the UV scanner cell or the burner will lock out.
GB