VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 15 60 60 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
ecovent
NRG
Air Handling Units
Installation, Operation and Maintenance Manual
14
PLEASE ENSURE THAT THIS DOCUMENT IS PASSED ON TO THE END USER
We reserve the right to alter the specifcation without notice ©VES Andover Ltd. 2009.
No part of this publication may be photocopied or otherwise reproduced without the prior permission in
writing of VES Andover Ltd.
Spares & Repairs
WEEE Directive
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 refi tted correctly by a competent engineer
Before attempting to carry out any maintenance work, investigative or repair work on our units,
the unit
MUST BE COMPLETELY ISOLATED
from its electrical supply. Ensure a minimum of
two minutes after electrical disconnection before removing access panels. This will allow any
moving parts to come to a rest.
When used in conjunction with an Inverter for speed control, a minimum of
Five minutes
should be given to allow for the capacitors to discharge before starting work.
In general, this series of units require little maintenance. In the unlikely event of component
failure, spares are available from stock at VES Andover Ltd.
When accessing the unit always use the handles to ensure the access panels are handled/opened
in a controlled manner so as to avoid damage to the unit or injury to personnel. This is
particularly important with bottom access units.
Ensure the AHU has been allowed to completely cool before attempting any work to the unit
In order to keep the unit in good order the following maintenance routine is recommended:
Filters should be inspected every three months. If they are found to be heavily soiled or
damaged in any way they should be replaced.
The fan impeller should be cleaned every 6 months. Failure to clean the fan on a regular basis
could result in loss of fan performance, or cause it to fall out of balance. If a fan is stationary
for long periods in a humid atmosphere, it should be switched ON for minimum of two hours
every month to remove any moisture that may have condensed within the motor.
Failure to keep dampers clean could result in the damper becoming inoperative. Clean damper
blades, cogs and frames and lubricate with PTFE aerosol or equivalent.
The heat exchanger matrix should be inspected for any debris, dust or dirt build up. If found
contaminated, foreign matter should be removed accordingly; superfi cial dust or debris can be
removed from the surface of the heat exchange by gently brushing. Loosened debris can then
be vacuumed from the surface of the matrix or fl ushed through with warm water. Stubborn
deposits can be removed by using a low pressure washer with an approved detergent solution.
The solution temperature should not exceed 50 °C. When using any pressure device care must
be taken not to damage the heat exchanger matrix.
Under NO circumstances should the heat exchanger be steam cleaned. Ensure the drain pan
and the drain connection is free from debris ensuring any condensate produced can freely drain
away. Should a full service be required it may be necessary to disassemble the unit casework to
gain access to some components.
NRG units are supplied with both unpainted galvanised sheet steel cases and powder coat
paint fi nish. Check all painted items to ensure that they have not deteriorated, particularly
where adverse environmental conditions prevail. Re-paint as necessary. Matching paint can be
supplied upon request.
When enquiring after or ordering spares contact VES Spares Department, quoting the sales
order (SO) number and unit type as found on the unit nameplate.
Tel: 08448 15 60 60 • Fax: 02380 26 12 04
At the end of their useful life the packaging and product should be disposed of via a suitable
recycling centre. Do not dispose of with normal household waste. Do not burn.
Important
Warning
Caution
Recommended Checks
Three Monthly Checks
Six Monthly Checks
Twelve Monthly Checks
Maintainance
6
