The casing is made of galvanised sheet steel. The 40 mm thick mineral fibre plates inserted in the REVOLUTION Series act as sound insulation. The cover can be simply screwed off, making the fan area easily accessible for cleaning and maintenance. The motor can be disassembled with impeller and spiral casing.
Properties
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flow rates up to 2,400 m³/h
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size: 125 - 400 mm (tube diameter)
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insulated casing
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high volume and pressure performance
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can be used in all mounting positions
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easy cleaning and maintenance
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speed is 100% infinitely variable using auto transformers or electronic control
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very low noise
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Impellers
nExternal rotor motors are used in protection class IP44/54 with humidity protection, ball bearing-mounted and with built-in thermal contacts for motor protection. In the REVOLUTION version, the impeller is backward curved. The impellers are mounted directly on the rotors of the external rotor motors and are dynamically balanced on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11.
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Electrical connection
nThe electrical connection is made through a terminal box with protection class IP44.
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Assembly
nRigid folded spiral-seam tubes (Spiro), flexible aluminium or plastic tubes with standardised diameter can be used. Zeroboxes can be used in all mounting positions. When used over several floors of a building, the local fire safety regulations must be observed.
