Low noise ventilation boxes series FBS

The FBS extraction units by SIC Srl are ventilating chambers with suitable soundproofing to ensure extremely silent operation.

The series is made up of eight models, with directly coupled fans. With different combinations of rotor diameter, speed and power supply, the range covers a field of flow-rates from 200 to 6,500 m3/h, with static pressures up to 450 Pa.

Electric fans are double inlet type with statically- and dynamically-balanced impellers to minimise vibrations and noise.

The high working static pressures allow the use of ducting for the extraction or distribution of air in a series of rooms.

• The structure is made of galvanised plate with perforated internal panelling;
• A 50 mm-thick layer of soundproofing material (glass wool) is positioned between the plate and the panelling to ensure sound insulation;
• The FBS series units are fitted with double inlet centrifugal fans, with forward-blade impellers and high working static pressures;
• All the fan impellers are dynamically- and statically-balanced to minimise vibrations and noise. The directly coupled motors feature external rotors. The model FBS-T 450 has a built-in overload contact;
• Vibration-damping mounts are installed between the structure and the fan, to attenuate the transmission of any vibration;
• The operating temperature must be between –20°C and +40°C;
The fans are inspected and removed from above.