NuAire AIRMOVER DSM Series Installation And Maintenance Manual

AIRMOVER
Square Cased Fans
DSM (mixed flow)
Fig. 1 DSM unit shown in avertical application.
IMPORTANT
The installation must be carried out by qualified personnel in
accordance with the appropriate authority and conforming to all
statutory and governing regulations.
Contents
Introduction ............................................................. 1
Description ............................................................... 1
Handling ................................................................... 1
Installation ............................................................... 1
Mounting arrangements ........................................ 4
Dimensions ............................................................... 6
Motor Information ................................................ 8
Routine Maintenance ............................................. 9
Replacement of parts .............................................. 9
Speed Controls (single phase)............................... 11
Speed Controls (three phase)................................ 11
Certification ............................................................ 13
W
ARNING
1. D
O NOT REVERSE IMPELLER DIRECTION FOR
OPERATION AS THE PERFORMANCE OF THE UNIT
.
IS DRASTICALLY REDUCED
2. D
O NOT ALTER THE BLADE ANGLE OF THE
IMPELLER WITHOUT THE PERMISSION OF
T
HE ABOVE MAY INVALIDATE YOUR WARRANTY
!
N A .
U IRE
Installation
and Maintenance
NuAire Limited
Western Industrial Estate Caerphilly,
CF83 1XH United Kingdom
Telephone 029 2088 5911
Facsimile No. 029 2088 7033
Email: info@nuaire.co.uk
www.nuaire.co.uk
Introduction
NuAire Airmover DSM square cased fans incorporate
mixed flow impellers.
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 DSM units 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 coded DSM followed by the impeller
diameter in mm ie. DSM315
Silencers, flexible connectors, resilient mountings and
guards 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.
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.
Installation
General
The design and provision of complimentary ductwork
supports, etc., is the responsibility of others. Adequate
space, however, must be provided around the
unit/silencer combination to enable it to be easily
removed from the ductwork when required. It is also
important that the fan unit is mounted so that it is
readily accessible. Provide adequate space around the
unit to allow for the removal and the replacement of
the impeller and motor via the access panel.
Leaflet No. 670985
OCTOBER 2001
1