Specifications

44
Similarly, the four configuration examples shown above
also cover the application on the other 30RB units.
IMPORTANT: The unit duct connection must not create
any mechanical constraint on the fan support deck.
The fan housings and the fan protection grilles must always
remain in their position inside the ducts.
Use bellows or flexible sleeves for the duct connection.
At the outlet of each duct provide an access hatch with a
minimum size of 700 x 700 mm to allow motor replacement
and disassembly of the fan wheel.
13.1.2 - Fan motor electrical protection
In case of a locked rotor or an overload, the motors of
each circuit are electrically protected by the circuit drive.
Each drive follows a variable current characteristic, based
on the frequency from 10 to 60 Hz and the number of fans
controlled.
If a fan is not operating correctly, the drive automatically
detects the problem and sends an alert to the Pro-Dialog
display. Please refer to the Pro-Dialog control manual for
the list of specific alarms for this option.