Unit must not be switched off, product is
designed to run continuously.
Please ensure the unit is isolated before
removing the cover.
5
24. 06. 13. Leaflet Number 671078
Installation and Maintenance
MEV-B Continuous Mechanical Extract Ventilation Units
Earth
post
Fan
terminal
block
Fan
terminal
block
N
L
Fuse 2A max.
Unit serving
Kitchen and Bathroom
230V
1ph
50Hz
supply
3
1
N
L
2
Room
light
Normal /Boost
switch (kitchen) not supplied
Light switch
(bathroom)
Light switch
(double pole)
Earth
post
N
L
Fuse 2A max.
Unit serving
Kitchen and two Bathrooms
230V
1ph
50Hz
supply
3
1
N
L
2
Room
lights
Normal /Boost
switch (kitchen) not supplied
Earth
post
Fan
terminal
block
N
L
Fuse 2A max.
Unit serving
Kitchen and Utility
and Bathroom
230V
1ph
50Hz
supply
3
1
N
L
2
Room
light
Normal /Boost
switch kitchen
(Not Supplied)
Normal /Boost
switch utility
(Not supplied)
Light switch
(bathroom)
Figure 8. Wiring for various unit applications.
Unit Wiring
Full speed operation with trickle ventilation
(figure 8)
Wiring for full speed operation with trickle ventilation.
Note: Trickle vent (NORMAL) adjustment screw on Electronic
Control Module must be set to a minimum of 25%
and full
speed (BOOST) set to 100%.
Maintenance
General
Note: Installation and maintenance of the equipment must be
as directed in the instructions provided with the unit.
It is inevitable that some dust, fluff etc. will pass through the
filter, and which, if allowed, will build up internally on motors
and impellers, shortening the life of the unit and, in severe cases,
leading to overheating of the motors.
Consequently, it is strongly recommended that all units are
inspected and cleaned every six months. To clean the filter,
remove from the unit and wash in tepid water to which a little
mild detergent has been added. Shake out excess water and
allow to dry naturally. Replace when dry.
Isolation
Ensure that the unit is totally isolated from the electrical supply.
This is particularly important when dealing with a run-on circuit
as input socket terminals within these units remain live,
even when the room light or other actuating switch is off.
Take care therefore when working within the case with the fan
module removed.
Procedure for inspection and cleaning
At all times, take care not to damage, distort or disturb the
balance of the impellers. Remove the cover and lift up the
electronic module to disconnect the spade terminals. Remove the
electronic module complete with the fan module after releasing
the four fan module retaining screws. Inspect all parts. With a
brush or dry cloth clean the backplate. Lightly brush away dust
and dirt from the fan module. If stubborn debris persists,
carefully remove with a suitable blade or scraper. Wash the
cover in warm soapy water. Dry thoroughly. Refit the fan
module and electronic module
followed by the cover. Test/run.
Replacement of Parts
Should any component need replacing Nuaire keep extensive
stocks for quick delivery. Ensure that the unit is electrically
isolated, before carrying out any work.
When ordering spare parts, please quote the serial number of
the unit and the ARC number of the purchase if possible.
(This information will be available on the fan label).
3 Year Warranty
The 3 year warranty starts from the day of delivery and
includes parts and labour for the first year.
The remaining 2 years covers replacement parts only.
This warranty is conditional on planned maintenance being
undertaken.
Service Enquiries
Nuaire can assist you in all aspects of service. Our service
department will be happy to provide any assistance required,
initially by telephone and If necessary arrange for an engineer
to call within 48 hours if possible
.
Technical Support
029 2085 8400
Spares
MEV single and twin fans
ITEM
PART No.
Foam Filter
772275
Remote Switch
773532
ELECTRONIC CONTROL MODULE
Single fan MEV-B
772270
Twinfan MEV-2B
772271
BLOWER ASSEMBLIES
MEV-B single fan units
772273
MEV-2B twin fan units
772274
