Nuaire Group AXUS Series Instruction Manual

Nuaire Limited Western Industr al Estate Caerph lly Un ted K ngdom CF83 1NA
T: 029 2085 8400 F: 029 2085 8444 E: nfo@nua re.co.uk W: www.nua re.co.uk
1
1.0 Introduction
The Nuaire Short Cased Axial Fan range is produced
in a range of sizes from 250mm to 1600mm diameter.
Cases are manufactured from var ous mater als such
as pre-galvan sed steel, sta nless steel or hot d pped
galvan sed steel. Impellers are selected to meet the spec f c
performance and are ava lable n a var ety of mater als to
ensure su tab l ty for the appl cat on.
Un ts are ava lable for s ngle and three phase supply.
2.0 Handling and Storage
The fan impeller is carefully balanced prior to despatch
and great care must be exercised when handling the unit.
Th s w ll ensure that the case s not damaged or d storted,
caus ng the mpeller to foul aga nst the cas ng. The fan
should be stored on a flat surface and the mpeller rotated
at regular ntervals.
3.0 Installation
Installation must be carried out by competent
personnel in accordance with good industry practice,
the appropriate authority and in conformance with all
statutory and governing regulations.
,
Pr or to nstallat on the mpeller should be rotated by hand
to ensure free and smooth rotat on and that no trans t or
handl ng damage has occurred.
General advice
Ensure that mpeller and motor are free from obstruct on
and that all opt onal accessor es such as guards and bell
mouths are securely fastened before commenc ng un t
start up.
When operat ng at low temperatures, ce format on can
occur, and su table prevent on should be adopted to avo d
ce bu ld up.
Motors
In general motors are totally enclosed, protected to IP55
(Dust and low pressure water jets) and have an ntegral
term nal box. Motors may ncorporate dra n holes to allow
any condensat on to escape from the motor cas ng. It is
essential that drain hole plugs positioned at the lowest
point of the motor are removed to allow condensate to
drain out of the motor. For vertical applications an
optional capillary drain plug is advised.
All bear ngs are pre-packed w th grease and sealed for l fe
requ r ng no further lubr cat on.
Connection Details
Electr cal connect ons are made d rectly to the motor
term nal box as standard. Check that the voltage on the fan
rat ng label s su table for your supply. Full load and
start ng currents are also nd cated.
Motors below 4kW are des gned for D rect On L ne start ng
wh lst 4kW and above are su table for D rect On L ne or
Star/Delta start ng.
Start Up Procedure
On start up ensure the mpeller rotat on follows the arrow
nd cator on the fan cas ng. Should the d rect on be
ncorrect on a three phase un t reverse any two of the
supply leads.
S ngle phase rotat onal d rect on s set at the factory and
should not be altered. Equ pment should be run for
approx mately 30 m nutes to ensure correct operatIon.
If any fault occurs the equ pment should be sw tched off
and not re-started unt l the fault has been rect f ed.
Reversing Fans
If the un t s spec f ed as ‘revers ng fan’ care must be taken
when des gn ng the control gear to ensure that enough t me
s allowed for the fan mpeller to come to a standst ll before
sw tch ng to the oppos te rotat on.
Any damages or deviations should be immediately
reported to Nuaire quoting the order/Arc number and
product details, detailed on the product rating label.
AXUS
C rcular Short Cased Ax al Flow Fans
Installat on and Ma ntenance
F gure 1. Correct method
of l ft ng/remov ng from
a pallet.
F gure 2. Mov ng/pos t on ng
un t to appl cat on us ng a
spreader.
The EMC Directive
2014/30/EU
The Low Voltage
directive
2014/35/EU
19. 10. 16. Leaflet Number 671351

If motor overheat protection is specified, terminals
T1 and T2 must be connected to the fan control circuit.
Failure to do this will invalidate the warranty.
5.0 Wiring Connections for Motor
Installation and Maintenance AXUS C rcular Short Cased Ax al Flow Fans
219. 10. 16. Leaflet Number 671351
Single phase.
Three phase - up to and including 3kW.
Three phase - 4kW and above.
Important. T1 and T2 = Thermistor connections
H1 and H2 = A.C. Heater connections
For good EMC engineering practice, any sensor cables
or switched live cables should not be
placed within 50mm of other cables or on the same
metal cable tray as other cables.
4.0 Electrical Installation
Un ts are not suppl ed w th electr cal solators, the r
select on and prov s on s the respons b l ty of the nstaller.
Ensure the electr cal supply s su table for the fan and that
all w r ng, fuse and overload protect on etc s appropr ately
s zed by compar ng w th the rat ng plate.
Electr cal connect on s made d rect to the motor term nal box.
For DOL starting of 4kW and above, 3ph, the final
connection must be in DELTA. If a STAR/DELTA starter
is to be used connect all six motor terminals to the
appropriate terminals of the starter.
Isolation - Before commencing inspection or
maintenance work make sure that the unit
is electrically isolated from the mains supply.

Installation and Maintenance AXUS C rcular Short Cased Ax al Flow Fans
319. 10. 16. Leaflet Number 671351
6.0 Maintenance
Due to the d fferent per ods of operat on from the t me of
nstallat on and vary ng use, no r g d nspect on and
ma ntenance per ods can be recommended. We suggest
therefore that the nspect on, and f necessary clean ng/
bear ng check should be carr ed out at regular ntervals of a
max mum of s x months.
For rout ne nspect on check the t ghtness of all nuts, keys,
grubscrews and endbolts etc. Remove any bu ld up of d rt or
dust w th a soft brush and ensure that the clearance
between the mpeller and fan cas ng has not been
comprom sed.
When using a high pressure jet washer, you must maintain a
minimum of 3 meters from the area being washed, with the
nozzle at 45° angle to the surface. Operate in a slow
sweeping motion so as not to spray too long on one spot.
7.0 Spares
The only components of the fan that could requ re replac ng
are the motor or the fan mpeller.
When order ng spares please quote the ser al number,
Order/Arc number, together w th a full descr pt on of
the part.
8.0 Extended Storage
General advice is as follows:
Fan products des gned for env ronmental vent lat on of
a completed structure must not be used dur ng s te
construct on or the ‘clean-up’ per od. Cement and plaster
dust s extremely abras ve and can advance bear ng wear.
Where fans are to be put n to serv ce for comm ss on ng
they must be protected from the a rborne contam nants
prevalent under construct on s te cond t ons.
Where fans are to be put n to ‘normal’ serv ce n a completed
or part completed bu ld ng the end user, tenant, occup er etc.
must be nformed of the ma ntenance requ rements deta led
n the relevant product nstallat on and
ma ntenance documents.
Where fans are to be stored or bonded for extens ve
per ods e ther n warehouse, under s te cond t ons or
n the nstalled state we make the follow ng add t onal
recommendat ons;
n Motors should be stored at ambient temperatures
between - 16oC and +50oC and at relative humidity
(RH) below 90% RH.
n Turn fan and motor shafts at three monthly intervals
to prevent the brinelling effect on the bearings. Brinelling
is a flattening or settlement of the shaft in the bearing
housing.
For extens ve storage per ods and part cularly where the
motors may be exposed to h gh RH levels, spec al
precaut ons and restart requ rements may be requ red.
For further adv ce contact the Nua re techn cal help l ne
below.
This warranty is void if the equipment is modified without
authorisation, is incorrectly applied, misused,
disassembled, or not installed, commissioned and
maintained in accordance with the details contained in this
manual and general good practice.
9.0 Service Enquiries
Nua re can ass st you n all aspects of serv ce. Our
Techn cal Support department w ll be happy to prov de
any ass stance requ red.
Telephone [phone]
Fax [phone]
Techn cal or commerc al cons derat ons may, from t me to t me, make t necessary to alter the des gn, performance and
d mens ons of equ pment and the r ght s reserved to make such changes w thout pr or not ce.

419. 10. 16. Leaflet Number 671351
Installation and Maintenance AXUS C rcular Short Cased Ax al Flow Fans
DECLARATION OF INCORPORATION AND INFORMATION FOR SAFE INSTALLATION,
OPERATION AND MAINTENANCE
To comply with EC Council Directives 2006/42/EC Machinery Directive and
2004/108/EC (EMC).
To be read in con unction with the relevant Product Documentation (see 2.1)
1.0 GENERAL
1.1 The equ pment referred to n th s Declaration of Incorporation s suppl ed by
Nua re to be assembled nto a vent lat on system wh ch may or may not nclude
add t onal components.
The ent re system must be cons dered for safety purposes and t s the
respons b l ty of the nstaller to ensure that all of the equ pment s nstalled n
compl ance w th the manufacturers recommendat ons and w th due regard to
current leg slat on and codes of pract ce.
2.0 INFORMATION SUPPLIED WITH THE EQUIPMENT
2.1 Each tem of equ pment s suppl ed w th a set of documentat on wh ch prov des
the nformat on requ red for the safe nstallat on and ma ntenance of the
equ pment. Th s may be n the form of a Data sheet and/or Installat on and
Ma ntenance nstruct on.
2.2 Each un t has a rat ng plate attached to ts outer cas ng. The rat ng plate
prov des essent al data relat ng to the equ pment such as ser al number, un t
code and electr cal data. Any further data that may be requ red w ll be found
n the documentat on. If any tem s unclear or more nformat on s requ red,
contact Nua re.
2.3 Where warn ng labels or not ces are attached to the un t the nstruct ons g ven
must be adhered to.
3.0 TRANSPORTATION, HANDLING AND STORAGE
3.1 Care must be taken at all t mes to prevent damage to the equ pment. Note that
shock to the un t may result n the balance of the mpeller be ng affected.
3.2 When handl ng the equ pment, care should be taken w th corners and edges and
that the we ght d str but on w th n the un t s cons dered. L ft ng gear such as
sl ngs or ropes must be arranged so as not to bear on the cas ng.
3.3 Equ pment stored on s te pr or to nstallat on should be protected from the
weather and steps taken to prevent ngress of contam nants.
4.0 OPERATIONAL LIMITS
4.1 It s mportant that the spec f ed operat onal l m ts for the equ pment are
adhered to e.g. operat onal a r temperature, a r borne contam nants and un t
or entat on.
4.2 Where nstallat on accessor es are suppl ed w th the spec f ed equ pment eg.
wall mount ng brackets. They are to be used to support the equ pment only.
Other system components must have separate prov s on for support.
4.3 Flanges and connect on sp gots are prov ded for the purpose of jo n ng to
duct work systems. They must not be used to support the ductwork.
5.0 INSTALLATION REQUIREMENTS
In add t on to the part cular requ rements g ven for the nd v dual product, the
follow ng general requ rements should be noted.
5.1 Where access to any part of equ pment wh ch moves, or can become electrically
live are not prevented by the equ pment panels or by f xed nstallat on deta l
(eg duct ng), then guard ng to the appropr ate standard must be f tted.
5.2 The electr cal nstallat on of the equ pment must comply w th the requ rements
of the relevant local electr cal safety regulat ons.
5.3 For EMC all control and sensor cables should not be placed w th n 50mm or on
the same metal cable tray as 230V sw tched l ve, l ght ng or power cables and
any cables not ntended for use w th th s product.
6.0 COMMISSIONING REQUIREMENTS
6.1 General pre-comm ss on ng checks relevant to safe operat on cons st of the
follow ng:
Ensure that no fore gn bod es are present w th n the fan or cas ng.
Check electr cal safety. e.g. Insulat on and earth ng.
Check guard ng of system.
Check operat on of Isolators/Controls.
Check fasten ngs for secur ty.
6.2 Other comm ss on ng requ rements are g ven n the relevant product documentat on.
7.0 OPERATIONAL REQUIREMENTS
7.1 Equ pment access panels must be n place at all t mes dur ng operat on of the
un t, and must be secured w th the or g nal fasten ngs.
7.2 If fa lure of the equ pment occurs or s suspected then t should be taken out of
serv ce unt l a competent person can effect repa r or exam nat on. (Note that
certa n ranges of equ pment are des gned to detect and compensate for fan fa lure).
8.0 MAINTENANCE REQUIREMENTS
8.1 Spec f c ma ntenance requ rements are g ven n the relevant product documentat on.
8.2 It s mportant that the correct tools are used for the var ous tasks requ red.
8.3 If the access panels are to be removed for any reason the electr cal supply to the
un t must be solated.
8.4 A m n um per od of two m nutes should be allowed after electr cal d sconnect on
before access panels are removed. Th s w ll allow the mpeller to come to rest.
NB: Care should still be taken however since airflow generated at some
other point in the system can cause the impeller to “windmill” even when
power is not present.
8.5 Care should be taken when remov ng and stor ng access panels n w ndy
cond t ons.
INFORMATION FOR SAFE INSTALLATION, OPERATION AND MAINTENANCE
OF NUAIRE VENTILATION EQUIPMENT
We declare that the machinery named below is intended to be
assembled with other components to constitute a system of
machinery. The machinery shall not be put into service until the
system has been declared to be in conformity with the provisions of the
EC Machinery Directive.
Designation of machinery: AXUS Short Cased Ax al Flow Fan
Machinery Types: AX
Relevant EC Council Directives: 2006/42/EC (Mach nery D rect ve)
Applied Harmonised Standards: BS EN ISO 12100, BS EN ISO 13857,
EN60204-1, BS EN ISO 9001
Applied National Standards: BS848 Parts One, Two and F ve
Signature of manufacture representatives:
Name: Pos t on: Date:
1) C. B ggs Techn cal D rector 26. 05. 16
2) A. Jones Manufactur ng D rector 26. 05. 16