Bifurcated Case Axial fans - BIF

Prices and stock levels correct at the time of printing (08/02/12 17:23)

This product range is now obsolete and no longer available from
Vent-Axia. The following information is provided for reference only.

Overview

The Bifurcated Case Axial range of fans has been specifically developed to meet the need for an axial fan which can handle atmospheres normally detrimental to the life of the fan motor.

By isolating the motor from the system airstream, the bifurcated fan can handle a wide variety of saturated and dustladen atmospheres, heated air and hot gases.

The range has a split airway with adirect driven motor operating in ambient air within the motor compartment. They are suitable, as standard, for handling air temperatures up to +200°C.

Motor / Impellers

The motors are specially selected to operate within the motor compartment with the airstream in the duct system, at an elevated temperature.

Motors are of the B3 foot mounting type, totally enclosed and fan cooled. Being foot mounted the motors can, in the event of a failure, be readily interchanged with a comparable frame size from a wide range of manufacturers to cover temperatures of up to 200°C.

The motor is suitable for speed control by either an inverter or a 5-step auto transformer speed controller when the ambient air temperature is not higher than 60°C.

The aluminium alloy impellers are die cast and have an adjustable pitch which allows a wide range of air outputs to be selected. All the casings are manufactured in steel and hot dipped galvanised to BS EN ISO 1461 after fabrication. Motor mountings and fixings used in the assembly of the fan are zinc plated and passivated.

Terminal Box
To IP55, protected against dust and water jets from any angle, allowing outside applications.

Electrical

Single phase 220-240V 50 Hz supply are available in two sizes 250 and 315 diameter in either 2 or 4 pole versions. Three phase 380-440V 50Hz supply are available in six sizes 250, 315, 400, 500, 630 and 800 diameter in either 2 or 4 pole versions (630 and 800 dia are available as 4 pole).

Dimensions

Stock Ref. No.	a	b	c	d	e	f	g	h	Approx Weight Kg
BIF250 /2&4/1&3/8-32	250	535	302	328	8	10	200	452	30
BIF315 /2&4/1&3/8-30	315	535	355	385	8	10	224	452	35
BIF400 /2&4/1&3/8-22	400	625	450	480	8	10	208	585	49
BIF500 / 4 / 3 /8-22	500	660	560	590	12	12	315	695	66
BIF500 / 2 / 3 /8-20	500	710	560	590	12	12	315	695	87

Stock Ref. No.	A	B	C	D	E	F	G	Approx Weight Kg
BIF630 / 4 / 3 /8-26	630	790	690	728	12	12	400	106
BIF800 / 4 / 3 /8-18	800	880	860	890	16	12	450	155

BIF250 - BIF500

BIF630 - BIF800

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O&M Instructions

Features

At a Glance:

Specially developed to meet the need for an axial fan which can handle atmospheres normally detrimental to the life of a fan motor.
Has a split airway with a direct driven motor operationg in ambient air within the motor compartment.
The motors are of the B3 foot mounting type, totally enclosed and fan cooled.
The aluminium alloy impellers are die cast and have an adjustable pitch.

FAQ's Answered:

Sizes 250 to 800 Ø
Motors protected to IP55
Motor Insulation Class 'F'
Maximum ambient temp. 200°C
Speed controllable via transformer inverter (when the ambient air temperature is not higher than 60°C)
Suitable for relative 95% R.H.
Manufacture controlled to BS EN ISO 9001
Performance tested to BS 848 Parts 1 & 2 and ISO 5801

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