Head Assembly/Electrode Replacement - Riello G30 MRBLU BF Installation, Use And Maintenance Instructions

 Use the template 2) supplied (Fig. 27) to check that the
head assembly is placed correctly 1), following the instruc-
tions indicated in Tab. B.
Model
G30 MRBLU
G40 - G50 MRBLU
2
A Combustion head adjustment
B Slot adjustment
A
B
D9473
 Thread the wires 5) (Fig. 28) in the electrodes 12), and
check that the seal between cable-electrode terminals is
properly fixed (if necessary, fasten the cable terminals);
then, protect the terminals with the insulating tubes.
D9491
 Fit the blast tube 2) (Fig. 25) and fix it with the screw 3) with
a tightening torque not exceeding 0.8 Nm, being careful to
adjust the opening of slots as indicated in Tab. A page 17
(use the template supplied) (Fig. 27).
20011757
Maintenance
mm
2,5 mm
4 mm
Tab. B
1
m m
Fig. 27
5
12
Fig. 28
 Fix the sleeve 11) (Fig. 29) following the indications in the
figure.
9.3.3

Head assembly/electrode replacement

To access the head assembly/electrodes, follow these instructions:
 remove the flange-fixing nut and pull out the burner;
 hook the burner onto flange 1) (Fig. 30), undo the screws 3)
and pull off the blast tube 2);
 loosen the screw 8) and take out the combustion head 7)
from the nozzle holder 9) trying to slide off the wires 5) from
the electrodes;
 replace the combustion head 7);
 refit in the reverse order as described in paragraph
9.3.2 "Nozzle replacement" at page 23.
7
1
D9354
24 GB
11
D9499
Fig. 29
2
8
5
3
Fig. 30