Unigas R91, Installation Manual

Page: 35 / 120

PART IV: MAINTENANCE
35
8 replace the cable CE and re-assemble the burner following the procedure in the reversed order.
9 If a maintenance operation must be performed on the combustion heads, once the maniflod CO has been removed, proceed as fol-
lows:
10 unscrew the eight screws VA that secure the air box CA ;
11 opne the air box CA ;
remove the combustion head ass.y as shown on the next picture;
ATTENTION: do not remove the the burner flange securing screws VB !
12 replace the cables, if damaged observing the numbering of the combustion head shown by the letters attached to the electrodes
cable;
13 to remove the electrodes, loosen the fixing screws VE ;
14 remove the electrodes E from their supports if broken;
15 to remove the combustion head T remove first the fixing screws VT ;
CE
CA
VA
VB
VE
E