General access and emptying hydraulic circuits
3
3
Free the hooks indicated and rotate the lid to-
wards left (Fig. 2.5).
D
Fig. 2.5
4
To access to the parts located inside the control
panel turn it as shown in Fig. 2.6.
Fig. 2.6
2.4
Main electronic p.c.b. box
Warning: isolate the boiler from the mains
electricity supply before removing any
covering or component.
To gain access to the parts located into main electronic
p.c.b. box proceed as follows:
1
Remove the front panel of the case.
Terminal block lid removal
2
To remove the terminal block lid
E
(Fig. 2.7), free
the front hooks.
E
Fig. 2.7
3
Slightly rotate the lid as indicated by the curved
arrow and free the rear hooks.
4
Remove the lid.
Main electronic p.c.b. lid removal
To get access to the main electronic p.c.b.:
5
Pull the box that contains the electronic p.c.b.
and rotate it (Fig. 2.8).
Fig. 2.8
6
Remove the terminal block lid E (Fig. 2.7).
7
Free the hooks placed on the three sides indi-
cated and rotate the lid towards left (Fig. 2.9).