Beretta POWER PLUS Installation Instruction page 66

Dismantling the Master and Slave boards
- Remove the panel front and access the inside of the
control panel (see the steps described on the previous
page).
- Remove the screws (V) and then the cover from the
Master board.
- Repeat the same operation to remove the cover (7)
from the first Slave board and (8) any second Slave
board.
- Remove the wiring connectors from the boards and
unscrew the fastening screws so as to remove the
boards.
b
If replacing the Master board, refer to the wiring
diagram on page 14 to restore the connections.
Once the servicing operations have been completed,
reassemble the components in the reverse order.
Dismantling the fan
- Remove the front and top panel of the boiler (see the
operations described on page 65).
66
- Remove the wiring (5) from the fan (6)
- Unscrew the four screws (7) that fasten the fan (6) to
the exchanger using an 8 mm socket wrench
- Unscrew the two screws (8) that fasten the fan (6) to
the air conveyor (9)
- Remove the fan (6).
Once the cleaning operations have been completed,
reassemble the components in the reverse order.
b
Check that the gas connect ion is tight.