HI-Volume Series


  • The Hi-Volume Belt Drive fan unit is specifically designed to ventilate larger buildings, by moving substantial amounts of air at low pressure with minimal energy consumption.
  • Available in two sizes, 1000mm and 1250mm diameter, each with three phase motors and the option of louvres and guards.


  • Constructed from galvanised steel with a specially designed stainless-steel propeller, these fans are extremely hard wearing and robust in application.
  • The drive mechanism comprises of a sealed for life maintenance free ball bearings, which means low noise and vibration levels.
  • Units are supplied fully assembled complete with a standard safety guard on suction side and counter balanced air operated louvre shutter on outlet.


  • The motors are to be foot mounted totally enclosed metric type to IP55, with sealed for life bearings and class F insulation, suitable for operating temperatures up to 50oC.
  • Motors are constructed with a finned aluminium casing to provide excellent heat dissipation resulting in a flexible and durable motor.


  • Propeller blades are fixed pitch. The six blades are attached to a mild steel powder coated hub. The complete assembled propeller unit is balanced to grade G6.3.

  Special Features

  • A crossed steel framework with the fan hub positioned centrally.
  • Fan blades and pulley are located on opposite sides, improving load balancing, thereby increasing bearing and fan life.
  • The belt is from reinforced rubber which is easily replaced locally.
  • Belt tensioning can be undertaken without removing the guards by using two bolts on the fan casing.
  • Easy access to the motor for servicing and maintenance.
  • The propeller compromises six self-cleaning blades.
  • The aerodynamic blade design ensures volume displacement at low blade pressure.
  • Fan housing is manufactured from galvanised sheet steel, corrosion resistant for durability and longevity.
  • The heavy-duty construction of the louvres prevents the overlapping slats from vibrating at high air flow.
  • When not in operation, heat loss is reduced by the louvres closing automatically.
  • Air delivery normally lost due to dirty shutters or to hold shutters open is eliminated.
  • The louvres are opened by a centrifugal mechanism, which means that once opened, the louvres do not sap the performance of the fan.

  Technical Data

              Motor Electrical Data 380-400v/3Ph/50Hz
    Airflow m3/s @ Static Pressure Pa. Power FL Start Sound Level
Model HV r.p.m. 0 25 50 75 100 V Amps Amps @3m(dB(A))
100 450 8.9 6.7 5.0 3.7 2.8 380 1.5 4.5 76
125 450 11.940 8.888 8.194 6.944 5.750 380 2.8 8.4 78


  Width, Propeller Depth fan  
Model HV Height (A) Aperture (B) case only (C) kg
100 1060 938 400 53
125 1380 1250 440 83

  Suggested Specifications

  • The Hi - Volume Belt Drive fan unit shall be as supplied by AMS and be of the quantities and model numbers shown on the drawings/specifications.

   Auto Cad


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