®
Air Handling Units -
External (SRE/EC)
Installation, Operation
and Maintenance Manual
Introduction
Designed for external applications, the SRE/EC range en-
compasses 4 models of direct driven centrifugal air han-
dling units with airflow duties up to 1.4m
3
/s.
Motor windings are fitted with an auto-reset thermal
cut-out.
Motors are pre-wired to an external terminal box
trickle – boost speed controller and isolator.
Units complete with integral G3 panel filter and electric
heater battery.
General Construction
Casework is manufactured from 0.9mm to 1.6mm thick
powder-coated (BS10A05 as standard – other colours on
request) sheet steel with an ‘O’ class foam / barrier mat
sandwich insulation to provide acoustic insulation.
Double skinned as an option.
Access is via a removable top cover.
Inlet via bird-mesh protected cowl.
Inspection Upon Receipt Of Goods
Immediately upon receipt of any goods, a careful inspec-
tion should be undertaken to ensure neither damage nor
missing parts. Particular attention should be paid to the
fan impeller and casework.
In the event of such damage or loss having occurred, in-
form
AVT (01264 356415) WITHIN 3 WORKING DAYS
of the delivery date, giving the serial number which can
be found on the name-plate. After this period we will be
unable to entertain any claim for loss or damage.
Handling
Units must be handled with care to avoid damage, par-
ticularly units being craned into position. Attention must
be paid to the overhanging weather lid and plastic finish..
A spreader bar should be employed to prevent damage
to the top of the unit.
Installation
When installing our equipment, the following must be
observed:
Safety:
It is the responsibility of the installer to ensure
that the installation complies with the legal regulations
and the current
HEALTH AND SAFETY AT WORK ACT
.
Ambient Temperatures
: The range of units covered by this
manual are designed for use in an environment where the
ambient air temperature is unlikely to exceed 40ºC.
Mounting / Positioning:
These units must be mounted
in the horizontal plane and on a completely flat base.
Other options are available on request.
Duct Connections
: Adjoining ductwork should always be
independently supported to avoid undue stress on the
unit casing. Impellers are statically and dynamically bal-
anced, and anti-vibration mounts and fast clamps are
available to suit.
Access:
All units are designed with easily removable
components for maintenance purposes. Sufficient room
should be allowed adjacent to the unit to allow compo-
nents to be withdrawn.
Electrical Wiring
Electrical supply must be fully isolated before attempting
any work on the unit.
All wiring should be carried out by a competent electri-
cian and should comply fully with the current I.E.E. Wiring
Regulations.
The electrical supply must be as stated on the nameplate.
When the wiring is complete, check for free and correct
rotation of the fan impeller
Maintenance
3 Monthly:
Filters should be insrected and if found to be
heavily soiled, replaced.
6 Monthly:
The fan impeller should be carefully cleaned
with a brush. This will prevent the impeller from becom-
ing unduly dirty and unbalanced.
12 Monthly:
The security and integrity of all fastenings
should be checked, particularly the motor mounting
frame.
01 T: +44(0) 1264 356415 / www.airventtechnology.co.uk
Motor
Power
Phase
FLC
SRE1EC
490 W
1 ph
3.0 A
SRE4EC
510 W
1 ph
3.1 A
SRE6EC
450 W
1 ph
2.9 A
SRE7EC
640 W
1 ph
2.9 A
