Hydraulic Systems - Riello RDB4 Installation, Use And Maintenance Instructions

6

Hydraulic systems

Explosion danger due to fuel leaks in the pres-
ence of a flammable source.
Precautions: avoid knocking, attrition, sparks and
heat.
Make sure the fuel interception tap is closed be-
fore performing any operation on the burner.
6.1 Hydraulic systems
The pump is designed to allow working with two pipes.
In order to obtain one pipe working it is necessary to unscrew the
return plug (2)(Fig. 13), remove the by-pass screw (3) and then
screw again the plug (2).
The suction plug (1) is made of plastic. Once re-
moved, it must not be used again.
In single-pipe installations, the plug in the return
WARNING
line (2) must be totally in steel.
➤ In the two pipes systems, before starting the burner make
sure that the return pipe-line is not clogged. An excessive
back pressure would cause the damage of the pump seal.
➤ A metal bowl filter with replaceable micronic filter must be fit-
ted in the oil supply pipe.
Key (Fig. 13)
1 Suction line
2 Return line
3 By-pass screw
4 Gauge connection
5 Pressure adjuster
6 Suction gauge connection
7 Valve
Auxiliary pressure test point
8
6.1.1 Priming pump
On the system in Fig. 14 it is sufficient to loosen the suction
gauge connection (6)(Fig. 13) and wait until oil flows out.
H
meters
0,5
1
1,5
2
difference of level
H = ;
max. lenght of the suction line
L =
I.D. interminal diameter of the oil pipes
=
Hydraulic systems
meters
L
I.D. I.D.
8 mm 10 mm
10 20
20 40
40 80
60 100
;
.
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
WARNING
8
1
13 GB
D9630
D5741
7
6
5
4
3
2
Fig. 13
Fig. 14
20071933