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Installation and Maintenance
Maintenance cont.
Bearings
Lubrication is unnecessary as the motors are fitted with
sealed for life bearings.
Impellers
Remove any dust and check that the impellers are securely
fixed to the motor shafts. Take care not to disturb any
balance weights fitted. Check sealed for life bearings for
excessive wear.
Anti Vibration motor plate mountings
The motor plate is supported on ten individual resilient
mountings. Check that mountings are secure and in good
condition.
Fig. 10
Aiflow Flapswitch for Auto Changeover
(if fitted)
Fig. 10
Check the flag switches operate freely by locating the
spindle and flap (through the blower outlet aperture) and
carefully moving the flap. A click will be heard when the
switch operates. NOTE: Do not bend the flaps.
Adjusting Drive Belt tension (ESX 11-19)
To check the correct tension of a drive belt, apply a force at
right angles to the centre of the belt span sufficient to deflect
the belt 16mm for every metre of span length (see fig. 11).
The force required to deflect the 'V' belt should be from
0.5kg to 0.8kg. The tension of the belt should be checked
after 24hrs of continuous running and adjusted as necessary.
Changing a Drive Belt
To replace a belt, remove the two bolts from the motor
mounting furthest from the fan and slacken the remaining
two bolts. Lift the motor plate and remove the belt.
Replacing the belt is the reverse of this procedure.
Adjusting Drive Belt tension (ESX 20-26)
All belt drive units incorporate belt tensioning devices.
To adjust the belt tension, slacken the pinch bolt on the
sides of the motor plate. Turn the adjusting bolt
clockwise to tighten the belt and counter clockwise to
loosen it.
The drive should be tensioned until a slight bow appears
in the slack side of the 'V' belt when running under load.
Flap and spindle
Micro switch
Fig. 11 Adjusting the drive belts
(ESX 11-19).
XTRACTOR - ECOSMART Belt Drive Single Fans
To check for correct tension, proceed as follows:
1.
Measure the span length (See fig. 12).
2. At the centre of the span, apply a force at right angles
to the belt sufficient to deflect one belt 16mm for every
metre of span length (see fig. 12). The force required to
deflect the 'V' belt should be from 0.5kg to 0.8kg.
3. Tighten the pinch bolts.
General Cleaning and Inspection
Clean and inspect the exterior of the fan unit and associated
controls etc. Remove the access panel from the fan unit.
Inspect and, if necessary, clean the fan and motor assemblies
and the interior of the case. If the unit is heavily soiled it
may be more convenient to remove the fan / motor
assemblies. If NuAire controls and or remote indicators are
fitted, remove the covers and carefully clean out the
interiors as necessary. Check for damage. Check security
of components. Refit the access covers.
General
1.
Check that all fixings are tight.
2. Check sealing strips around the fan outlets are tight up
against the bulkhead.
3. Check that duct connections are not leaking.
Warranty
Xtractor has a 3 year warranty. Ecosmart Xtractor has a
5 year warranty. The warranty starts from the day of
delivery and includes parts and labour for the first year.
The remaining period covers replacement parts only.
This warranty is void if the equipment is modified without
authorisation, is incorrectly applied, misused,
disassembled, or not installed, commissioned and
maintained in accordance with the details contained in this
manual and general good practice.
The product warranty applies to the UK mainland and in
accordance with Clause 14 of our Conditions of Sale.
Customers purchasing from outside of the UK should
contact Nuaire International Sales office for further
details.
After Sales Enquiries
For technical assistance or further product information,
including spare parts and replacement components, please
contact the After Sales Department.
Telephone 02920 858 400
Technical or commercial considerations may, from time to time,
make it necessary to alter the design, performance and
dimensions of equipment and the right is reserved to make such
changes without prior notice.
6
Fig. 12 Adjusting the drive belts
(ESX 20-26).
11. 05. 17. Leaflet Number 671177
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