VES MERA250 Original Instructions Manual

MERA250

Wall Mounted Axial Fan

VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: [phone] Fax: [phone] e-mail: [e-mail] web: www.ves.co.uk

Original Instructions : Installation, Operation & Maintenance Manual

ID Ref 917b • August 2014

Original Instructions : Installation, Operation & Maintenance Manual Original Instructions : Installation, Operation & Maintenance Manual

This manual must be read in full before Installation, Operation and
Maintenance of the units supplied. Please ensure that this document is
passed to the end user. This manual forms an integral part of the product
and should be kept for the working life of the product. Additional copies of
this and supporting documents are available by contacting VES or by
visiting www.ves.co.uk and following the 'Download O & M's' link.

IMPORTANT

The following symbols used within this document refer to potential dangers
or advice for safe operation

Indicates hazards associated with electric current and high
voltages

Indicates hazards that require safety advice for personnel
and/or potential unit/property damage

Indicates important information

Unit Description

The MERA250 wall mounted axial fan

This fan
is reversible and can operate in extract or supply modes. Mode selection is
achieved via the pull cord switch. For full unit details please see the unit
specification later in the document.

Immediately upon receipt of your MERA250 fan, check there is no damage
to the fan, and that the four fixing screws and matching wall plugs are
included within the ancillary bag.
In the event of any damage having occurred or if any item is found to be
missing, it is essential to inform VES Andover Ltd. within 7 days of delivery
quoting sales order number and the unit type. After this period, VES would
be unable to accept any claim for damaged or missing goods.

is suitable for a range of light

commercial applications including; shops, sports halls, warehouses.

MERA250......................................... Wall mounted reversible axial fan,

c/w fan blade auto shutter system

Part Number Description

Dimensions

AB C D E F(mm) Ø

MERA250 252 285 350 24 50 46

IMPORTANT

Before attempting to carry out any work on our units, all accompanying
documentation including warning labels on the unit must be referenced.
Should it be necessary to remove any component ensure that these are
secured into position once reinstalled. It is critical that after any
maintenance work has been conducted that all components removed
/replaced be refitted correctly by a competent engineer.

D

E

F

C

B

ØA

IMPORTANT

MERA250 fans should be installed in accordance with current IEE
Regulations BS7671 and the appropriate Building Regulations.

IMPORTANT

These fans are not suitable for ceiling mounting.

For fan positioning refer to Building Regulation for specific requirements.
If installed in a room containing a fuel burning device without a balanced
flue, it is the installers responsibility to ensure that is enough replacement
air to prevent any fumes being drawn back down the flue when the fan is
operating at full speed.
The fan should be installed with an appropriate duct kit and consideration
must be given to ensure that access to all moving parts of the fan are
restricted when the fan is in use.

C

B

MERA250

Dimension drawings

IMPORTANT

Before aempng to carry out any maintenance or repair work on our
units, the unit MUST BE COMPLETELY ISOLATED from its electrical supply.
Ensur

e a minimum of two minutes aer electrical disconnecon before

a

empng access. This will allow any moving parts to come to a rest.

VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: [phone] Fax: [phone] e-mail: [e-mail] web: www.ves.co.uk

Original Instrucons : Installaon, Operaon & Maintenance Manual

WEEE Direcve

Ahe endoheir useful lifethe packaging andproduct should
be disposedof viaasuitable recyclingcentre. Donot dispose of
with normalhousehold waste. Do not burn.

Standards

MERA fans conform to all relevant Brish and European
standards and direcves. Further informaon is available
from VES Andover Ltd on request

Please ensurethahis documens passedon to the enduser

We reserve the right to alter the specificaon without noce
©VES Andover Ltd. 2010. No part of this publicaon may be

photocopied or otherwise reproduced without the prior
permission in wring of VES Andover Ltd.

Maintenance

1. Before cleaning, isolate the fan completely from the mains supply.

2. Carefully remove the front cover

3. T

o clean the front cover, either wipe it with a damp, lint free cloth or

wash it in warm soapy water. Thoroughly dry the front cover and refit.

4. Do not immerse the fan in water or other liquids to clean any other parts
of the fan.

5. Never use strong solvents to clean the fan.

6. Apart from cleaning, no other maintenance is required.

For replacement fans or install kits please visit www.vesdirect.co.uk

Specificaon

Power Supply 230VAC 50Hz
Operang Temperature 0~40°C

Insulaon Class 1
Motor Protecon IP rated to X2

gniraeBepyT rotoM

0241)mpr( deepS

63)W( rewoP

51.0)A( tnerruC

Warranty

The fan is guaranteed against defects for 1 year from the date of purchase.
If you have any problems, contact VES at the address shown below.

Original Instrucons : Installaon, Operaon & Maintenance Manual

Wire the fan as per

wiring diagram &
instrucons

Prepare hole in
mounng surface &
plug mounng holes as
required

Replace snap on front

cover

Installaon connued

Secure fan body
mounng surface

Original Instrucons : Installaon, Operaon & Maintenance Manual

Wiring Diagrams

Standard Wiring

(Typical Installaon)

Operaon

The MERA250 fan

To iniate the extract

mode pull the switch once, to reverse the fan pull twice, and pull a third
me to stop the fan. Ensure that excessive force is not used when pulling
the switch as this may damage the unit.

is reversible and can operate in extract or supply mode.

Mode selecon is achieved via the pull cord switch.

IMPORTANT

All electrical work should be carried out by a qualified engineer and in
accordance with the current IEE Regulaons.
Before aempng to carry out any maintenance or repair work on our

units, the unit MUST BE COMPLETELY ISOLATED from its electrical supply.
Ensure a minimum of two minutes aer electrical disconnecon before
aempng access. This will allow any moving parts to come to a rest.

Fuse

Double Pole

Isolang Switch

L

N

E

Fan
Terminals

Not Used

L

N

E

IMPORTANT

The fan must be fused at 3A unless it forms part of a 5A lighng circuit.
An isolator should be installed to isolate all poles to the fan. Please note the
integral pull cord switch does not isolate the fan from the electrical supply.

Using the fan chasis as a
template, mark centre holes
on mounng surface

Remove the front cover
from the fan by hand - tools
not required

x1

x2 x3



