Application Guide
General ventilation and extraction
Fire safety & life systems
Catering
Education: schools/universities
Healthcare
Industrial
Leisure: Venues/stadiums
Offices
Retail: malls/supermarkets
Residential: hotels/apartments
Stairwell pressurization
Smoke extract (inc loading bays)t
Toilet extract
Kitchen extract
Demand control ventilation
(fan controls)
Cooling and refrigeration
Electro-mechanical cooling
Environmental control - crop storage
Petrochemical process ventilation
Emergency ventilation options up to 400°C/2 hours
Pressure testing
Sizes
31JM - (315mm) to 100JM - (1000mm).
Larger sizes up to 2500mm diameter are also a available. Please enquire.
Fan Performance
All fans are tested to the latest inter nationally recognized standard IS05801 Part 1 (1997),
installation category D (AMCA approved) for aerodynamic performance and BS848 Part 2
(1985) for acoustic performance. Coupled with a wide range of fan diameters, the adjustable
pitch Aerofoil impeller gives the exact performance required, with a non o overloading fan
characteristic.
Impellers
A unique high efficiency aerofoil section blade with a purposely smoothed hub and clamp
plate for adjustable pitch angle availability.
The Fläkt Woods impellers are all high pressure die cast to offer thin aerofoil sections for low
generation of noise. Every cast aluminum component is X-r ay examined using Real Time
Radiography inspection prior to assembly. The maximum pitch angles shown allow for speed
control by frequency inverter (3ph only).
Motors
All motors are totally enclosed air stream rated class F insulation. Constructed from aluminum
or cast iron as standard with special ‘T’ slot or pad mounted fixings . Single speed motors are
suitable for speed control by voltage regulation where indicated. Three phase motors are
suitable for use with frequency inverters. Two speed motors where available are pole change
type. Suitable for horizontal through to vertical shaft operation. Supplied IP55, with removable
drain plugs.
Sealed for life bearings lubricated with wide temperature range grease. The BT, CT and F22
are all fitted with overheat protection thermostat as standard. D motors are fitted with
Thermistor OHP. These motors are suitable for inverter speed control down to 20% of full
speed.
Electrical Supply
220 - 240V / 50Hz / 1 φ
380 - 420V / 50Hz / 3 φ
Temperature Range
-40°C to 50°C as standard. (All motors are not suitable for
starting at temperatures lower than -20°C.) Fans that include
BT or CT motors can be continuously operated at temperatures
up to 70°C. When these fans are operating in excess of 50°C they
should be run at full speed only. Other fans can be operated up to
70°C with appropriate deration of motors.
Most standard 3φ fans can be offered for a one off emergency operation at
200˚C for 2 hours.
Casings
JM Aerofoil fans are available in either a long cased form, complete with an externally
mounted pre-wired electrical terminal box, or short cased for duct or plate installation. Casings
are spun from sheet steel with integral pre-drilled and radiused inlet flanges. The galvanized
finish gives a high resistance to corrosion and is ideal for external as well as internal use.
Accessories
Silencers, Mounting feet, Vibration isolators, Matching flanges, Flexible connectors, Air
operated non return dampers, Guards, Bell mouth inlets. Electronic and transformer type
speed controllers and frequency inverters.