BORETTI CFBG902AN2 Instruction On Mounting And Use Manual page 42

Note:
Continuous use may cause a change in the glaze around the burners and
grids, corresponding to the areas exposed to the heat. This is a natural
phenomenon and does not prevent the parts from working properly.
Correct replacement of the auxiliary, semi-rapid and rapid burners
It is very important to check that the burner flame distributor "F" and the cap
"C" has been correctly positioned (see figs. 7.1 - 7.2) - failure to do so can
cause serious problems.
Correct position of the dual burners
The burner must be correctly positioned (see fig. 7.5); the burner rib must be
enter in their logement as shown by the arrow (see fig. 7.3).
Then position the cap "A" and the ring "B" (figs. 7.4 - 7.5).
The burner correctly positioned must not rotate (fig. 7.5).
Important:
the Dual burner flame speader has a centring pin ("CP" in fig. 7.3).
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