20016967
12
GB
5.
MAINTENANCE
Disconnect the electric supply to the burner by switching off the main power switch and close the
gas shut-off valve before maintaining or checking the system.
The burner requires scheduled maintenance that must be carried out by qualified personnel and in compli-
ance with local legislation.
Scheduled maintenance is vital for the smooth operation of the burner; it avoids waste of fuel and reduces
harmful emissions into the atmosphere.
5.1
FAN CLEANING
Proceed as follows:
³
undo the screws (1) (Fig. 11) and screw (2 ground
clamps);
³
disconnect the electric wiring from the control box
(3);
³
take out the suction inlet (4) without disassembling
the components.
³
Clean the fan and inside the suction inlet using an
appropriate brush and compressed air.
³
If necessary, carefully disassemble the fan.
To refit, it is important to respect position
B
(fig.
12) indicated in the table.
³
To refit, follow the procedure above but in reverse
order; refit all burner components as they were
originally assembled.
5.2
BASIC OPERATIONS
³
Check at regular intervals that the holes of the
gas head are not obstructed. If they are, clean
them with a suitable tool as shown in the figure
13.
³
Check there are no occlusions or obstructions in
the inlet or return pipes, in the air suction areas
and in the combustion product waste pipe.
³
Check that the burner and gas train electrical
connections are correct.
³
Check that the positioning of the air pressure
test point (8, fig. 1, page 2) is correct.
³
Check that the gas train is suited to the burner
capacity, the type of gas used and the network gas
pressure.
³
Check that the positioning of the combustion
head is correct and that it is properly fixed to the
boiler.
Carry out maintenance operations
paying attention not to damage or un-
balance the fan during cleaning oper-
ations.
Model
B
TIGRA 2 CG510
69 ± 0.2 mm
TIGRA 2 CG710
69 ± 0.2 mm
TIGRA 2 CG1210 1A
85 ± 0.2 mm
TIGRA 2 CG1810 1A
101 ± 0.2 mm
1
4
3
2
1
1
Fig. 11
Fig. 12
D9824
D9825
Motor
Fan
Fig. 13
E9252
B
Suction inlet
CAUTION
