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Installation, Operating and Maintenance Instructions
6.4 Electric Heaters
Electric heaters should be checked at regular intervals for condition
of elements, wiring and insulation.
6.5 Recuperator
The recuperator block is normally protected from dust and
contamination by upstream pre-filters. It is possible to clean the
unit with compressed air in the case of dust deposits or by spraying
with a mild detergent solution for grease deposits.
Solvents, strong alkaline, acidic or any products that may be
aggressive to aluminium should not be used. Do not use cleaning
water over 50 deg C.
Drain lines should be checked to ensure that they are unobstructed
and free draining. Traps should be checked that they are fully
primed and functioning.
Drain pans should be flushed out periodically to remove
contamination, and chemical treatments may be used to provide
protection between service visits.
Note: The unit application may require particular attention to
this item – Check with Building Management personnel for
details.
6.6 Maintenance and Cleaning of
Rotating Heat Exchangers
Maintenance of the rotor
To secure the function and performance, the face of the rotor has to
be inspected regulary for dust and dirt. Any dirt or/and dust should
be removed. For a small amount of easily removable dirt we
recommend to use a vacuum cleaner. For heavier deposits it is
possible to use compressed air, with caution. Finally, firm dirt in
the rotor can be removed by using hot water and a mild detergent.
Maintenace of drive unit
Tension of the V-belt must be checked after the first 100 hours of
operation to secure the rotational function of the wheel.
To adjust tension, first check the belt tensioner and adjust it as
much as possible. Secondly, shortening of the V-belt may be
required. The V-belt is joined together by an easily removable
mechanical lock. Ensure adjustment of the belt tensioner after
this operation.
The round belt is self tensioned and no adjustment should be needed.
Maintenace of brush sealants
Tightness between brush sealants and casing has to be checked
during inspection. The brush sealants are easily adjusted by
losening the screws and moving the brush sealant into the right
position.
V-belt, Round belt and brush sealants are all available as spare
parts.
Checking drive belt tension
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.
The force required to deflect the 'V' belt should be from 0.5kg to
0.8kg.
Figure 23.
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
All belt drive units incorporate a belt tensioning facility.
To adjust the belt tension, slacken the pinch bolts on the sides of
the motor plate. Use the motor platform pivot adjustment to
tighten and loosen the belt.
Clean impellers with a soft brush only, and remove dust/deposits
from all internal surfaces including the motor housing,
6.7 General
Inspect all internal and external surfaces to check for corrosion or
peeling of painted surfaces.
Thoroughly clean affected areas with a wire brush, apply a coat of
zinc rich primer or similar, and re-touch with suitable finishing
paint. Ensure tightness of all nuts, bolts, and fixings.
Check all components for general condition.
7.0 Service
Service schedule (typical – will depend on site
conditions)
FILTERS
DAMPERS
DAMPER ACTUATORS
BELT DRIVES
FILTER MANOMETER FLUID
VENT WATER COILS
COIL FINNED SURFACES
CHECK DRAIN LINES + DRIP TRAY
CLEAN & FLUSH DRAIN PANS
NUTS, BOLTS, FIXINGS SECURE
FAN BEARINGS
ELECTRIC HEATERS
ELECTRICAL WIRING
FAN IMPELLER
GENERAL
8.0 Warranty
Ecosmart XBOXER TWB units have a 5 year warranty.
No control units have a 2 year warranty. The first year covers
parts and labour and the remaining period covers parts only.
This warranty is void if the equipment is modified without
authorisation, is incorrectly applied, misused or not installed
commissioned and maintained in accordance with the details
contained in this manual and general good practice.
9.0 Spares
Spare parts and replacement components, and general advice are
available from the Nuaire Ltd Service department.
Telephone 029 2085 8585
Fax 029 2085 8586
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XBOXER Thermal Wheel
6 MONTHS 12 MONTHS
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Leaflet Number 671423 October 2010
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