NuAire NALSC Installation And Maintenance

Introduction

The NALSC range of short cased axial fans are
manufactured from galvanised steel and incorporates
inlet and outlet flanges with pre-drilled bolt holes.
All motors are totally enclosed and protected to IP54, class
F insulated with sealed for life bearings.
Impeller blades are manufactured from die cast aluminium,
and sizes 315-500 use advanced sickle design. All other
sizes use high efficiency aerofoil sections.
The fan is designed to form part of a ducted system. If fitted
within 1.5mm of the end of a duct run, a suitable guard or louvre
should be fitted. Anti-Vibration mountings and flexible connectors
are available as accessories and are recommended to minimise
noise and vibration. Note that the mountings MUST be used in
compression only.

1.0 Handling

Always handle the fans carefully to avoid damage and distortion.
Care should be taken to ensure that any slings used for lifting
purposes do not damage or pass through the impeller.
Always check the unit weight on rating label before lifting.
2.0 Dimensions (mm) & Weights (kg)
Fig. 1.
E
72
A
B F deg
G
Fan Code A B C
dia. dia. dia.
NALSC315-41 382 317 9.5
NALSC350-41 421 356 9.5
NALSC400-41 466 400 9.5
NALSC450-41 515 451 9.5
NALSC500-41 567 503 9.5
NALSC560-41 635 559 11.5
NALSC560-43 635 559 11.5
NALSC630-43 707 634 11.5
NALSC710-63 785 711 11.5
NALSC800-63 875 797 11.5
NALSC1000-83 1080 1001 11.5
Nuaire: A Trading Division of Polypipe Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA
T: 029 2088 5911 F: 029 2088 7033 E: info@nuaire.co.uk W: www.nuaire.co.uk
NALSC
Slim Cased Axial Flow Fan
Installation and Maintenance
D dia.
C
D E F deg G Weight
dia. Kg
356 135 8x45 6 6.5
395 135 8x45 6 7.5
438 155 12x30 6 10.3
487 160 12x30 6 15.8
541 165 12x30 6 16.6
605 210 16x22 8 17.4
605 210 16x22 8 18.5
674 220 16x22 8 29
751 260 16x22 10 34
837 280 24x15 10 39
1043 330 24x15 5 66

3.0 Installation

Isolation - Before commencing work make sure
that the unit, and any control are
electrically isolated from the mains supply.
Installation must be carried out by a competent person in
accordance with the appropriate authority and conforming to all
statutory and governing regulations i.e. IEE, CIBSE, COSHE etc.
All duct connections must be airtight to prevent any loss of
performance.
Connection Details
Wiring should only be carried out by a qualified electrician and in
accordance with all relevant statutory and governing regula-
tions.
Check the fan details on the rating plate correspond with
the supply voltage and frequency.
The fan unit incorporates a terminal box on the casing exterior.
Units for external use require weatherproof conduit and glands.
DO NOT use metal terminal box glands.
Motors are designed for Direct On Line starting.
Motor overloads should be set to the full load current on the
fan rating label.
Supply fuses should be H.R.C. type.
All fans are suitable for speed control.
Start Up Procedure
Note: single phase rotational direction is set at works and should
NOT be altered. Motor winding thermal protection connectional
must be made.
Equipment should be run for approximately 30 seconds to
ensure correct operation. If a fault occurs, switch off.
Do not restart until fault has been rectified.
Testing after Installation
If a speed control is fitted, check the speed variation is obtained.

4.0 Electrical Wiring

Fig. 2.
Single Phase motor with capacitor and thermal contacts.
Z2 Z1 U2 U1 TK
L1
N
Three Phase motor with single speed and thermal contacts.
TK TK W2 U1 U2
L1
1
The EMC Directive
2014/30/EU
The Low Voltage
directive
2014/35/EU
TK
P E
V1 V2 W1
L2 L3 P E
15. 05. 17. Leaflet Number 671524