NuAire ecosmart CONNECT BPS, Инструкция по установке и обслуживанию

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05. 11. 20. Leaflet Number 671828
BOXER BPS ECOSMART CONNECT CONTROL (CO)
51
11.0 MAINTENANCE
11.2 Bearings
11.1 Fans
11.1.1 General Fan Maintenance
11.3 Filters
It is the owner’s responsibility to ensure that the air handling equipment is
maintained accordingly. In doing so, regular and scheduled checks will decrease
the possibility of unforeseen and possibly costly repairs. Maintenance tasks
should be taken care of by a competent person, if system failure occurs due to
improper maintenance, Nuaire will not be held liable for the costs of restoring a
unit to its previous working condition.
It is recommended that PPE is always used during the maintenance of Air
Handling Equipment – gloves, eye shields and respiratory mask.
The bearings that are fitted will be (unless otherwise specified) “sealed for life”,
therefore consequence maintenance is not required.
Fan bearings are lifelong; up to 40,000 hours of operation. In cases of heavy
duty operation, maintenance intervals are to be established by the operator.
Please refer to general arrangement drawings for details of the type of fan and
drive that is fitted. Maintenance guidelines for all fans are beyond this manual,
please contact Nuaire for specific documents.
Before any work is carried out, please ensure that:
• The power supply to the motor is switched off.
• The fan impeller is at rest.
• Measures are taken to ensure that the accidental, uncontrolled run-
ning of the fan is prevented during maintenance work.
In general, fans should be inspected twice a year, and care should be taken to
ensure that any unusual vibration or sound is investigated as an urgent matter.
Access to the fan section is via hinged or lift-off panels. Cable entry must be
made through the apertures provided. Screwed glands with cable restraint
devices should be used.
• Access to the fan is normally gained by opening the hinged access
doors.
• Care should be taken to remove any build up of dust (a light vacuum
or light brushing will normally take care of this) Do not use a steam
or any other high pressure cleaners.
• Inspect the connection between the fan and unit for any damage or
wear and tear.
When removing the filter access panels, pay attention to the airflow direction
marked on the panel, this must be replaced to the exact position prior to being
removed. Disposable filters should be checked, and changed when they become
fully laden with dust. Washable filters should be removed and washed in a mild
detergent, flushed with clean water and allowed to dry before refitting.
IMPORTANT
Isolation - Before commencing work make sure that the unit
is electrically isolated from the mains unit and sufficient time has
passed to allow the fans to run down (5 minutes minimum).
11.4 Heating & Cooling Coils
11.5 Plate Heat Exchanger
Coils should be connected to ensure that full counter flow exists i.e. - the
entering airflow meets the return connection.
All coils should be connected with the flow at the bottom and the return at the
top unless otherwise advised. Drain and bleed valves are located on the coil,
others may be required in the system pipe-work depending on the installation.
Frost protection must be incorporated on shut down and fresh air conditions
to avoid coil freezing. Ideally, where the system is at risk of frost damage, the
addition of a proprietary antifreeze solution to the water is recommended.
Pipe-work connections should be made to the unit using appropriate techniques,
and must be independently supported. The connections should be pressure
tested.
All coils sit in a common drip tray connected to the pre-fitted
condensate pump.
The coil panel has been pre-drilled and fitted with appropriate
grommets for pipe connections. Do not drill or cut the unit casing for
this purpose.
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.
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 or plastics 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.
IMPORTANT
Isolation - Before commencing work make sure that the unit
is electrically isolated from the mains unit and sufficient time has
passed to allow the fans to run down (5 minutes minimum).
IMPORTANT
If the unit contains a thermal wheel heat exchanger, please
ensure that the rotation sensor is aligned with the sensing studs, as
this can become misaligned during
transport/installation thus causing a fault signal.