NuAire NALTRF13-17 Installation And Maintenance Manual

NALTF & NALTRF
The EMC Directive
2014/30/EU
The Low Voltage
directive
2014/35/EU
Belt Drive Roof and Plantroom Twinfans
Installation and Maintenance
Introduction
2.0 Dimensions
The Nuaire NALTF and NALTRF Belt Drive Twinfan range
consists of the following units:
NALTF/NALTRF Plantroom/Roof in line mounted unit.
NALTRF Plantroom/Roof bottom inlet unit.
NALTRF Plantroom/Roof bottom/end inlet unit .
(Larger sizes).
Figure 2. NALTF and NALTRF-1 Units Dimensions
Removable top
panel
E
50mm
C
D dia
Units are rectangular in section and the casing is
manufactured from heavy gauge ‘Aluzinc’ aluminium-zinc
coated mild steel.
A full size internally lined access panel is fitted to the top
face and is fully detachable for inspection purposes.
F
Circular
spigots
(NALTF 9-17)
B
A
Rectangular spigots
(size NALTF 18-24)
The motor plate and frames are supported on the base by
resilient mountings allowing the fan unit to be operated
without the need for separate anti vibration fan case
mountings.
Unit
NALTF9-10,
NALTF11-12,
NALTF13-17,
NALTF18-24,
The units incorporate two independent motors with high
efficiency, forward curved centrifugal impellers running in
metal scrolls. Taperlocked pulleys and wedge drive belts are
employed. The fans discharge into a common outlet chamber
through a shutter system that prevents ‘blowback through
the standby fan. The motors are manufactured to BS5000
and are suitable for three phase supply.
Opposed
outlet
grilles
Airflow and failure monitors are standard for sizes 9 to 15.
All motors have Class F insulation and are suitable for
operation in ambient temperatures up to 40oC.
C
A
NALTRF9-10
974
NALTRF11-12
1233
NALTRF13-17
1430
NALTRF18-24 2030
B
974
1233
1635
2313
C
622
701
796
1183
D dia
400
500
630
-
E
1200
F
700
Figure 3. NALTRF Bottom Inlet Units Dimensions
Removable
top panel
B
A
1.0 Handling
Always handle the units carefully to avoid damage and
distortion. Eyebolts are provided on some units for lifting.
If mechanical aids are used to lift the unit, spreaders should
be employed and positioned so as
to prevent the slings, webbing etc.
making contact with the
casing.
Correctly position slings
to avoid twisting of the
unit case and observe
the centre of gravity
before the final lift is
made. Note: the weight
of the unit from the
rating plate.
Control module
located internally
E
F
B
974
1233
1635
Spigot
C
E
622
457
701
762
796
889
Bottom inlet
Unit
NALTRF9 to NALTRF10
NALTRF11 to NALTRF12
NALTRF13 to NALTRF17
A
974
1233
1430
F
229
304
381
Figure 4. NALTRF Larger Bottom/End Inlet Units Dimensions
B
A
Louvred
end outlet
C
Figure 1. Lifting unit with slings
via spreaders.
F
E
Bottom rectangular
inlet spigot
Rect Spigot
Unit
NALTRF18 to NALTRF24
A
2030
B
2313
C
1183
E
1200
F
700
Nuaire: A Trading Division of Polypipe Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA
T: 029 2088 5911 F: 029 2088 7033 E: [email protected] W: www.nuaire.co.uk
1
15. 05. 17. Leaflet Number 671269
NALTF/TRF
Roof and Plantroom Twinfans
3.0 Installation
Testing after Installation
Ensure that the Fan unit and any specified controls are
fitted securely according to the instructions.
Switch on the mains supply. Push the test button to run
each fan and check that they run satisfactorily.
If a switched live signal is used, activate this signal and
check that the fan runs. De-activate the switched live signal
and check the run-on-time; adjust if necessary.
The installation must be carried out by competent
personnel in accordance with the appropriate authority and
conforming to all statutory and governing regulations.
Units must not be installed at an angle over 5o from the
horizontal (to ensure the backdraught shutters operate
satisfactorily). Units must be installed with the access panel
on top, never up-side-down.
Adjust the maximum and minimum airflow (if required) by
following the commissioning procedures.
Prefabricated Curb
Units should always be positioned with sufficient space
to allow removal of the access covers and subsequent
removal of fan and motor assemblies etc.
CODES: NALPFC (typical)
Manufactured in
aluminium alloy these
curbs will reduce design
work and guarantee correct
unit mounting when on site.
Ductwork connections must be airtight to prevent loss of
performance.
The method of mounting used is the total responsibility of
the installer. The lower edge of the casing has an internal
skirt allowing the unit to be located on an upstand or
prefabricated curb if desired. The units must be securely
screw fixed to the upstand/curb to prevent vibration and/or
wind damage.
It is the installers responsibility to drill the case to provide
access for the electrical cables. Care should be taken not to
damage internal components and the cable entry must be
properly sealed. NOTE: on bottom inlet units the electrical
cabling may be routed up through the bottom inlet spigot.
Figure 6.
Note: Upper faces of curb are fitted with robust sealing
strip.
Prefabricated curb dimensions
Unit
Code
NALTF 9-10
NALTF 11-12
NALTF 13-17
Prefab
Curb Code
NALPFC 4B
NALPFC 5B
NALPFC 6B
A
917
1173
1374
B
917
1173
1580
C
250
250
250
Typical Roof Upstand for NALTF 18-24
Upstand Details
Figure 7.
Details of roof opening dimensions etc required and basic
construction of a builders upstand etc are shown below for
typical concrete and decking roof installations.
2030
1183
Roof Opening Dimensions Figure 5.
165 louvre
50mm Spigot
680
700 Spigot
640
Curb
1550 min
1850 max
2313
700 Spigot
1200 Spigot
210
1200 Spigot
Unit Code
Prefab Code
A
B
C
D
E
F
G
NALTF 9-10
NALTF 11-12
NALTF 13-17
NALPFC 4B
NALPFC 5B
NALPFC 6B
767
973
1169
767 947 947 837 837 75
973 1203 1203 1064 1064 100
1375 1399 1605 1268 1471 100
Curb
150
2140 max
Note: Prefabricated curbs can be used to support internal or external units.
2
15. 05. 17. Leaflet Number 671269
NALTF/TRF
Roof and Plantroom Twinfans
4.0 Electrical Details
Electrical Wiring
Figure 9.
FAN UNIT
230V Switched live signal.
Remove L/SL link when using
Run currents etc.
Unit Code
NALTF/TRF 9
NALTF/TRF 10
NALTF/TRF 11
NALTF/TRF 12
NALTF/TRF 13
NALTF/TRF 14
NALTF/TRF 15
NALTF/TRF 16
NALTF/TRF 17
NALTF/TRF 18
NALTF/TRF 19
NALTF/TRF 20
NALTF/TRF 21
NALTF/TRF 22
NALTF/TRF 23
NALTF/TRF 24
400V 3 Phase 50Hz
Speed
Power
f lc
rpm
(kW)
(amps)
1225
0.75
2.1
1400
1.1
2.9
1085
1.5
3.7
1225
2.2
5.4
1040
2.2
5.4
1040
4.0
10.0
1260
3.0
6.9
1260
5.5
12.0
1440
5.5
12.0
700
5.5
12.0
800
4.0
10.0
800
11.0
23.0
1000
5.5
12.0
1000
11.0
23.0
1100
11.0
23.0
1200
11.0
23.0
sc
(amps)
9.5
13.0
8.5
27.0
27.0
60.0
38.0
75.0
75.0
75.0
60.0
154.0
75.0
154.0
154.0
154.0
SL
L
L
N
Fan live applies to
Direct Drive fans only
(Link to be left in)
Weight
kg
84.4
90.4
125
134
168.7
193.6
174.6
231.6
231.6
730
716
794
730
794
794
794
L3
L2
L1
Switched live overrun
adjustment
N
Fault indicating
voltage free
contacts
NO
Note: relay is
NC
energised if no
fault is present COM
i.e. COM - N O
is connected if
there is no fault
400V 3 ph 50Hz Supply
Basic fan wiring diagram for
NALTRF 9-15 and NALTF 9-15 only
Isolation - Before commencing work make sure
that the unit, and any control are
electrically isolated from the mains supply.
NAL-RFI Remote fan
indicator (supplied)
The fan will only operate when a 230V mains signal is
present at the SL terminal.
When the SL signal is switched off the fan will continuue to
run for a preset period (1-60 minutes). Adjust the overrun
time at the pot marked ‘-SL RUNON’.
Ensure the local isolator (by others) also isolates
the switched live.
NOTES:
Because the run and start currents depend upon the duty
and associated ductwork of an individual unit, the values
quoted in the table are nominal.
Run currents will be exceeded if the unit is operated with
its cover removed. The unit must NOT run for more than
2 minutes in this condition.
Controls for NALTF/NALTRF 9-15
The NALTF/NALTRF 9-15 fan units incorporate an integral
auto-changeover controller which provides 12 hour duty
share operation and automatic selection of the standby fan
should the duty fan fail.
Fault indication to an external device is provided via volt free
contacts of a relay.
Note: the relay is energised when no fault is present.
Note: It is the responsibility of the installer to provide a
suitable switchable local isolator for maintenance purposes
etc.
Electrical Installation Basic Layout
Figure 8. Basic internal layout.
NALTF/NALTRF 16-24 Inclusive
These fan units are supplied without any controls fitted.
The electrical power is connected directly to the motor.
Note that the motors are 5.5kW or higher and STAR-DELTA
starting or a Soft Starter should be used in the motor control
panel (by others).
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15. 05. 17. Leaflet Number 671269
NALTF/TRF
Roof and Plantroom Twinfans
Changing a Drive Belt
Isolation - Before commencing work make sure
that the unit, and any control are
electrically isolated from the mains supply.
To replace a belt, remove the two bolts from the motor
mounting furthest from the fan and slacken the remaining
two bolts. Lift the motor plate and remove the belt. Replacing
the belt is the reverse of this procedure.
5.0 Maintenance - Fan unit
Maintenance Intervals
The first maintenance should be carried out three months
after commissioning and thereafter at twelve monthly
intervals. These intervals may need to be shortened if the
unit is operating in adverse environmental conditions, or in
heavily polluted air. Access to the unit internals is gained by
removing the top cover(s).
Motors
Figure 12. Adjusting the Drive Belts (larger units).
Brush away any dust or dirt from the motor housings and
ensure that the motor vents are unblocked.
Adjusting Drive Belt Tension (larger units)
Bearings
All belt drive units incorporate belt tensioning devices.
To adjust the belt tension, slacken the pinch bolt on the sides
of the motor plate. Turn the adjusting bolt clockwise to
tighten the belt and counter clockwise to loosen it.
The drive should be tensioned until a slight bow appears in
the slack side of the ‘V’ belt when running under load.
Lubrication is unnecessary as the motors are fitted with
sealed for life bearings.
Impellers
Remove any dust and check that the impellers are securely
fixed to the motor shafts. Take care not to disturb any
balance weights fitted. Check sealed for life bearings for
excessive wear.
To check for correct tension, proceed as follows.
1.
Measure the span length (See figure 12).
2.
At the centre of the span, apply a force at right
angles to the belt sufficient to deflect one belt
16mm for every metre of span length
(see figure 12). The force required to deflect
the ‘V’ belt should be from 0.5kg to 0.8kg.
3.
Tighten the pinch bolts.
Figure 10. Shutter detail.
General Cleaning and Inspection
Shutter Assembly
Clean and inspect the exterior of the fan unit and associated
controls etc. Remove the access panel from the fan unit.
Inspect and, if necessary, clean the fan and motor assemblies
and the interior of the case. If the unit is heavily soiled it
may be more convenient to remove the fan/motor
assemblies. If NuAire controls and or remote indicators are
fitted, remove the covers and carefully clean out the
interiors as necessary. Check for damage. Check security of
components. Refit the access covers.
Remove any dust and check that the shutters operate freely
and that they seal the appropriate fan outlet effectively.
Anti Vibration Motor Plate Mountings
Each motor plate is supported on ten individual resilient
mountings. Check that all the mountings are secure and in
good condition. (See figure 11).
General
1. Check that all fixings are tight.
2. Check sealing strips around the fan outlets are
tight up against the bulkhead.
3. Check that duct connections are not leaking.
Figure 11. Adjusting the Drive Belts (smaller units).
Adjusting Drive Belt Tension (smaller units).
To check the correct tension of a drive belt, apply a force at
right angles to the centre of the belt span sufficient to deflect
the belt 16mm for every metre of span length (see figure 11).
The force required to deflect the ‘V’ belt should be from
0.5kg to 0.8kg.
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15. 05. 17. Leaflet Number 671269
NALTF/TRF
Roof and Plantroom Twinfans
6.0 Replacement of Parts
Drive belts are the only servicable items on these fan units.
With time and fair wear and tear it may be necessary to
replace fan assemblies or motors - consult the fan rating
plate detail when ordering.
Note: Isolate the Electrical Supply
Remove the top access panel. Disconnect the wiring to the
motor assembly. Remove the old unit. Replace the fan/
motor assembly. Re-connect the supply to the motor. Check
for correct rotation and operation and replace the top
access panel.
Spare Parts
When ordering spares please quote the serial number of the
unit. This number will be found on the identification plate
attached to the unit mounting frame. Please give a full
description of the part required.
7.0 Warranty
The unit has a one year warranty. The warranty starts
from the date of delivery and covers faulty materials or
workmanship and includes parts and labour. The labour
element is subject to full, free and safe access to the
equipment as recommended by the CDM regulations.
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.
The product warranty applies to the UK mainland and in
accordance with Clause 14 of our Conditions of Sale.
Customers purchasing from outside of the UK should
contact Nuaire International Sales office for further details.
8.0 After Sales Enquiries
For technical assistance or further product
information, including spare parts and replacement
components, please contact the After Sales Department.
Telephone 02920 858 400
5
15. 05. 17. Leaflet Number 671269
DECLARATION OF INCORPORATION AND INFORMATION FOR SAFE INSTALLATION,
OPERATION AND MAINTENANCE
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:
BELT DRIVE TWINFAN
Machinery Types:
NALTF, NALTRF
Relevant EC Council Directives:
2006/42/EC (Machinery Directive)
Signature of manufacture representatives:
Name:
Position:
Date:
1) C. Biggs
Technical Director
20. 07. 07
2) A. Jones
Manufacturing Director
20. 07. 07
Applied Harmonised Standards: BS EN ISO 12100-1, BS EN ISO 12100-2,
EN294, EN60204-1, BS EN ISO 9001
Applied National Standards:
BS848 Parts One, Two and Five
Note: All standards used were current and valid at the date of signature.
INFORMATION FOR SAFE INSTALLATION, OPERATION AND MAINTENANCE
OF NUAIRE VENTILATION EQUIPMENT
To comply with EC Council Directives 2006/42/EC Machinery Directive and
2014/30/EU (EMC).
5.0
To be read in conjunction with the relevant Product Documentation (see 2.1)
1.0
1.1
2.0
INSTALLATION REQUIREMENTS
In addition to the particular requirements given for the individual product, the
following general requirements should be noted.
GENERAL
The equipment referred to in this Declaration of Incorporation is supplied by
Nuaire to be assembled into a ventilation system which may or may not include
additional components.
The entire system must be considered for safety purposes and it is the
responsibility of the installer to ensure that all of the equipment is installed in
compliance with the manufacturers recommendations and with due regard to
current legislation and codes of practice.
5.1
Where access to any part of equipment which moves, or can become electrically
live are not prevented by the equipment panels or by fixed installation detail
(eg ducting), then guarding to the appropriate standard must be fitted.
5.2
The electrical installation of the equipment must comply with the requirements
of the relevant local electrical safety regulations.
5.3
For EMC all control and sensor cables should not be placed within 50mm or on
the same metal cable tray as 230V switched live, lighting or power cables and
any cables not intended for use with this product.
INFORMATION SUPPLIED WITH THE EQUIPMENT
Each item of equipment is supplied with a set of documentation which provides
the information required for the safe installation and maintenance of the
equipment. This may be in the form of a Data sheet and/or Installation and
Maintenance instruction.
Each unit has a rating plate attached to its outer casing. The rating plate
provides essential data relating to the equipment such as serial number, unit
code and electrical data. Any further data that may be required will be found
in the documentation. If any item is unclear or more information is required,
contact Nuaire.
Where warning labels or notices are attached to the unit the instructions given
must be adhered to.
7.0
OPERATIONAL REQUIREMENTS
3.0
TRANSPORTATION, HANDLING AND STORAGE
7.1
3.1
Care must be taken at all times to prevent damage to the equipment. Note that
shock to the unit may result in the balance of the impeller being affected.
Equipment access panels must be in place at all times during operation of the
unit, and must be secured with the original fastenings.
7.2
3.2
When handling the equipment, care should be taken with corners and edges and
that the weight distribution within the unit is considered. Lifting gear such as
slings or ropes must be arranged so as not to bear on the casing.
Equipment stored on site prior to installation should be protected from the
weather and steps taken to prevent ingress of contaminants.
If failure of the equipment occurs or is suspected then it should be taken out of
service until a competent person can effect repair or examination. (Note that
certain ranges of equipment are designed to detect and compensate for fan failure).
2.1
2.2
2.3
3.3
6.0
COMMISSIONING REQUIREMENTS
6.1
General pre-commissioning checks relevant to safe operation consist of the
following:
Ensure that no foreign bodies are present within the fan or casing.
Check electrical safety. e.g. Insulation and earthing.
Check guarding of system.
Check operation of Isolators/Controls.
Check fastenings for security.
6.2
Other commissioning requirements are given in the relevant product documentation.
8.0
MAINTENANCE REQUIREMENTS
8.1
Specific maintenance requirements are given in the relevant product documentation.
8.2
It is important that the correct tools are used for the various tasks required.
4.0
OPERATIONAL LIMITS
8.3
4.1
It is important that the specified operational limits for the equipment are
adhered to e.g. operational air temperature, air borne contaminants and unit
orientation.
If the access panels are to be removed for any reason the electrical supply to the
unit must be isolated.
8.4
A minium period of two minutes should be allowed after electrical disconnection
before access panels are removed. This will allow the impeller to come to rest.
4.2
Where installation accessories are supplied with the specified equipment eg.
wall mounting brackets. They are to be used to support the equipment only.
Other system components must have separate provision for support.
4.3
Flanges and connection spigots are provided for the purpose of joining to
duct work systems. They must not be used to support the ductwork.
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 removing and storing access panels in windy
conditions.
Technical or commercial considerations may, from time to time, make it necessary to alter the design,
performance and dimensions of equipment and the right is reserved to make such changes without prior notice.
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15. 05. 17. Leaflet Number 671269