23
20011755
GB
Maintenance
Use the template 2) supplied (Fig. 26) to check that the
head assembly is placed correctly 1), following the instruc-
tions indicated in Tab. B.
Tab. B
Thread the wires 5) (Fig. 27) 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.
Fit the blast tube 2) (Fig. 24) 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 in dicated in Tab. A page 16
(use the template supplied) (Fig. 26).
Fix the sleeve 11) (Fig. 28) 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. 29), 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 22.
Model
mm
G30 MRBLU
2,5 mm
G40 - G50 MRBLU
4 mm
2
1
A
B
m m
Fig. 26
D9473
A
Combustion head adjustment
B
Slot adjustment
D9491
Fig. 27
5
12
D9499
Fig. 28
11
D9496
Fig. 29
2
5
8
1
7
3
