Page 40 - Air Handling Units.cdr

AIR Handling UNITS

Centrifugal fans

Two-sided-suction fans with blades bent backwards, driven by a motor with belt transmission
- make it possible to obtain high pressures. One-speed or two-speed three-phase motors are
used to drive the fans. The motors are mounted on installation rails, tted with a tightening bolt,
making it possible to adjust the V-belts. Standard operating temperature is -15o C to +40oC.
Both at the fan and at the motor, belt pulleys with a Taper-lock hub are installed, so the
disassembly is quick and simple. Depending on the load, V-belts characterized by SPA, SPB
or SPZ proles are used. The fans are equipped with bearings with a minimum
service life of 20000 hours. Depending on operating conditions, the fans are equipped with
maintenance-free bearings or bearings which require periodical lubrication.

Different versions of centrifugal fans made for ventilation Air handling unit sections

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