NuAire XBOXER XBC 10 NT Series, Installation, Control Details, Operating And Maintenance

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Isolation - Before commencing work make sure that
the unit and Nuaire control are electrically isolated
from the mains supply.
XBOXER XBC ECOSMART2 (NT) MODELS
10.0 MAINTENANCE
It is recommended that PPE is always used during the maintenance of
Air Handling Equipment – gloves, eye shields and respiratory mask.
In some Ecosmart units and in some third party controls, variable
speed drives (inverters) are used to provide fan speed control. After the
fan is isolated, allow at least 5 minutes for the capacitors in the inverter
to discharge before commencing any work on the unit.
10.1 DAMPERS
At regular intervals check that the blades move freely.
10.2 FILTERS (4 X G4 FITTED AS STANDARD)
Disposable filters should be changed when an appropriate
pressure drop is achieved.
10.3 HEATING COILS
Coils should have their finned surface examined for accumulation of dirt,
lint and biological contaminants or similar.
If necessary, wash down affected areas with a mild detergent solution
and a soft brush. Care should be taken not to damage the finned
surface, and any cleaning fluids should be rinsed away with water.
A compressed air line may be used to blow out any solids between fins.
Do not probe the coil fin block with metal objects as damage may
cause leaks.
Drain lines should be checked to ensure that they are unobstructed
and free draining.
Drain pans should be flushed out periodically to remove
contamination.
Note: The unit application may require particular attention to this
item – Check with Building Management personnel for details.
10.4 COUNTERFLOW PLATE HEAT EXCHANGER
The heat exchanger 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.
10.5 FANS AND MOTORS
Fan bearings should be manually checked at regular intervals for
condition. Standard fan bearings are supplied as ‘sealed for life’ and
have an anticipated life of 40,000 hours.
Motors have an enclosed bearing housing and are pre-greased
for life.
Check all fixings are secure.
10.6 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.
11.0 SERVICE SCHEDULE
Typical–will depend on site conditions.
6 MONTHS 12 MONTHS
G4 FILTERS
4
or
4
F7 FILTERS
4
DAMPERS
4
DAMPER ACTUATORS
4
VENT WATER COILS
4
COIL FINNED SURFACES
4
CHECK DRAIN LINES + DRIP TRAY
4 4
CLEAN DRAIN PANS Building
Schedule ?
4
NUTS, BOLTS, FIXINGS SECURE
4
FAN BEARINGS
4
ELECTRIC HEATERS
4
ELECTRICAL WIRING
4
FAN IMPELLER
4
GENERAL
4
12.0 WARRANTY
5 year warranty on Ecosmart2 (NT) models for peace of mind.
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 or not installed
commissioned and maintained in accordance with the details
contained in this manual and general good practice.
If control software is modified or removed
Nuaire will accept warranty on the hardware (unit) provided the
replacement does not control the unit beyond its specified limits (refer
to Nuaire testing standards and Application Guidance Notes document
NA-QS-W029-3 which can be found on our website
www.nuaire.co.uk )
13.0 SPARES
Spare parts and replacement components, and general advice are
available from the Nuaire Ltd Service department.
TELEPHONE 029 2085 8400
FAX 029 2085 8444