Fans by Fantech Electronic Catalogue

AXIAL FLOW FANS GENERAL INFORMATION

AXIAL FLOW FANS PERFORMANCE DATA

C-6

2016

CONSTRUCTION

All axial fan casings are rolled and flanged from either pre-galvanised sheet or

heavy-gauge mild steel that is hot-dip galvanised after manufacture. All hot-dip

galvanising of axial flow fan products is to AS/NZS4792:2006 and is the standard finish

on the fans larger than 800mm diameter and their accessories. The standard casings

enclose the impeller and motor completely. Weatherproof external terminal boxes

are standard.

The motor is wired into the external terminal box through flexible terminal weatherproof

conduit and a separate earthing screw is provided.

An inspection hatch is standard on fans 1000mm diameter and over, a 50mm sight hole

is fitted on smaller fans. An inspection hatch is available on the smaller fans.

Flameproof or increased-safety motors are wired to the outside of the case and left

with a generous length of lead. This is so the client can connect to their own terminal

box in accordance with the requirements for the particular hazardous zone.

AXIAL FLOW FAN RANGE

DUCT MOUNTED

Direct-drive - AP Series (315 to 2000 mm diameter)

The entire range can be provided in a wide choice of speeds to meet an extensive

number of performances and applications. If a speed or duty you require is not shown

please contact our sales engineers for assistance. In general, all flameproof or special

application motors can be fitted if required.

Direct-drive - APV Series (315 to 2000 mm diameter)

The full range of sizes and speeds can be supplied as direct-drive APV units for

applications where the fan must be installed vertically. The casing is designed with

integral outriggers to facilitate vertical mounting.

Direct-drive - APS Series (315 to 2000 mm diameter)

For smoke spill applications Fantech can supply fans up to 2000mm diameter fully

tested to meet the Australian Standards AS/NZS1668.1:1998 and AS4429:1999. See

page

C-8

for more information.

Belt-drive - APB Series (315 to 2000 mm diameter)

The full range of sizes and speeds can be supplied as belt-driven APB units for

applications where the motor must be out of the air stream.

When selecting these fans allowance for the additional pressure loss caused by the

drive arrangement must be taken into account as follows:-

Open belts: no extra pressure loss

Sealed belt guard: add 5% to the design pressure.

Bifurcated - BFA Series (400 to 1250 mm diameter)

This range is available in a wide choice of speeds. Bifurcated axial flow BFA fans are

designed for handling toxic, noxious, abrasive and hot gases. They can be used as an

alternative to the APB belt-driven range.

The maximum air temperature the standard bifurcated fan can handle continuously,

and without special treatment to the impeller and motor, is 100°C for an aluminium

impeller, or 70°C for GRP.

Bifurcated fans can be built to accommodate temperatures of up to 200°C continuous

for sizes up to 1250mm and 250°C for sizes up to 630mm.

For this type of application it is essential the fan be mounted in normal ambient

conditions, that the central motor tunnel is aligned vertically and that the motor has

Class H insulation and equivalent lubrication of the bearings.

Refer to Fantech if the fans are to handle higher temperatures or the motor tunnel is

not vertical.

When selecting these fans the following allowances must be made to the duty to

compensate for the central shroud:-

Sizes 400 to 560 - 1.0 ×

d F

Sizes 630 to 1250 - 0.7 ×

d F

Dimensions of the AP, APV, APS, APB and BFA fans are on pages

C-26/27