Fan section

Centrifugal forward-curved blade fan

Double inlet type R20 DIN 323 series.
According to the series, the size and operational limits they are manufactured in the following versions:

  • From size 012 to 120 1st class version (rectangular outlet) without frame but with base feet, bearings assembled on spider brackets, elastomer antivibration mounts (spring upon request).
  • From size 012 to 716 1st class version (square outlet) with frame, bearings assembled on spider brackets, elastomer antivibration mounts (spring upon request).
  • From size 153 to 716 2nd class version with frame, bearings assembled on supports, elastomer antivibration mounts (spring upon request).

NB: Oltre alla tipologia di serie precedentemente indicate vengono utilizzati per particolari esigenze i seguenti tipi di ventilatori:

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Centrifugal BACKWARD-CURVED blade fan

Double inlet type R20 DIN 323 series.
According to the series, the size and operational limits they are manufactured in the following versions:

  • From size 032 to 716 1st and 2nd class version with frame, bearings assembled supports, elastomer antivibration mounts (spring upon request).

NB: In addition to the above mentioned series the following types of fan are used for particular requirements:

 

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Centrifugal backward-curved blade fan with airfoil profile

  • From size 061 to 716 class 1 and 2 version with frames, bearings assembled supports, elastomer antivibration mounts (spring upon request).

NB: In addition to the safety microswitch and the different signals coming from movement components and power supply presence, an identification rating plate is applied on inspection doors of fan sections, detailing:
Manufacturing company – Order Number – Airflow rate – Useful head – Fan type and model – Motor type and model.
Upon request you can have ATEX compliant fans.

“Plug-fan” type centrifugal fan

Simple inlet backward-curved blade fan, suitable to be used with motor directly coupled and driven by inverter, particular executions can employ pulleys drive.
The unit casing can replace the fan scroll.
(For the selection of these fan address to the headoffice).

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Electric motors

They are of the following types: External ventilation closed construction – Three-phase induction motors – Squirrel cage rotor – B3 shape – IP 55 protection degree – Insulation class F – CEI-UNEL regulations in compliance with IEC and CENELEC regulations. Upon request the following versions can be supplied: With isotherm, explosion-proof, tropilacalized Regulations: CEI 2-3/1988, CEI 2-6/1976, IEC 34.1, IEC 34.2.
For certified explosion-proof motors ATEX 94/9 EEC: II2G EExd IIB T4 IP55.

Motor-fan group section:

  • assembled on extruded aluminium base – V-belt drive – pulleys (with Taperlock locker) – standard variable pitch pulleys with powers up to 1,5 kW
  • belt-tightening pulley – flexible connection joining the fan outlet and the front panel – elastomer antivibration mounts (spring as option) – Air diffuser – Microswitch on the door that stops the fan when opened (excluded in ATEX version).

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