NuAire AIRMOVER DSA Series Installation And Maintenance Manual

AIRMOVER
Square Cased Fans
DSA (Axial Flow)
Fig. 1 DSA in horizontal application.
Introduction ............................................................. 1
Description ............................................................... 1
Handling ................................................................... 1
Installation ............................................................... 1
Motor Information ................................................ 3
Mounting arrangements ........................................ 4
Dimensions ............................................................... 6
Routine Maintenance ............................................. 8
Replacement of parts .............................................. 9
Speed Controls (single phase)............................... 10
Wiring diagrams ....................................................... 11
Certification ............................................................ 12
IMPORTANT
The installation must be carried out by qualified personnel in
accordance with the appropriate authority and conforming to all
statutory and governing regulations.
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
Contents
!
N A .
U IRE
Installation
and Maintenance
NuAire Limited
Western Industrial Estate Caerphilly,
CF83 1XH United Kingdom
Telephone 029 20 88 5911
Facsimile No. 029 2088 7033
Email: info@nuaire.co.uk
www.nuaire.co.uk
ISOLATION
Note that the unit must be provided with a means of
isolation (by others) for maintenance purposes etc.
A suitable isolator can be supplied by NuAire on
request as a separate item.
Introduction
NuAire Airmover DSA square cased fans are
produced with duty sizes up to 3.7 m
incorporate an axial 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 Airmover DSA axials 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 two sizes: 500mm dia and
630mm dia, coded DSA500 & DSA630.
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. 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. 670972
OCTOBER 2001
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