NuAire DuctMaster DSA Installation And Maintenance Manual

DuctMaster
Square cased Fans
DSA (axial)&
DSM (mixed flow)

Introduction

NuAire DuctMaster DSA & DSM square cased fans
are produced wth duty sizes up to 21m3/sec. and
incorporate either Axial flow or Mixed flow impellers
depending on the size of the unit concerned.
Casings are manufactured in galvanised steel with
propriety flanges fitted to allow connection to
ductwork. A full width access panel allows inspection
of the motor and impeller whilst still in duct.
A full range of matching ancillaries is available
including Silencers, Fan Guards, Resilient Mounting
Kits, Speed Controls and Flexible Connectors.
All NuAire Airmovers are tested to BS848 in our BSI
approved laboratories. This ensures all technical data is
accurate, which means that units can be specified with
confidence

Description

The units are produced in seven sizes, coded DSA315
to DSA1250. Units with mixed flow impellers are
coded DSM followed by impeller diameter in mm.
Silencers, flexible connectors, resilient mountings and
gaurds are supplied as optional extras. Short and long
versions of the silencer (SIL-S) & (SIL-L) are
available for each size. Speed controls are available for
most units.
Installation
and Maintenance
NuAire Limited
Western Industrial Estate
Caerphilly, Mid - Glamorgan CF83 1XH
United Kingdom
Telephone 01222 885911
Facsimile No. 01222 887033
Email: info@nuaire.co.uk
Fig. 1
DSA & DSM units shown
in horizontal and vertical
applications.
Contents
Introduction ............................................................. 1
Description ............................................................... 1
Handling ................................................................... 1
Installation ............................................................... 2
Testing after Installation ....................................... 5
Dimensions ............................................................... 6
Removing & refitting the unit ............................... 6
Operating the unit .................................................. 6
Routine Maintenance ............................................. 7
Replacement of parts .............................................. 7
Schedule of Spares .................................................. 8
Speed Controls (single phase)............................... 9
Speed Controls (three phase)................................ 10
Wiring Diagrams ..................................................... 8
Electrical Information ............................................ 8

Handling

Equipment must be handled carefully to avoid damage
or distortion. Except for the smallest 315 size , units are
provided with four lifting eyes. If spreaders are used,
they should be positioned as near the end flanges as
possible and in such a way that slings or webbing do
not bear on the casing. Webbing, rope of any other
material must not be passed through units for lifting
purposes.
Leaflet No. 670478
April 1997
1