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31. 08. 21. Document Number 671746
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS (V/T)-ES
Installation Manual
11.0 MAINTENANCE
It is important that maintenance checks are recorded and that the
schedule is always adhered to, in all cases, the previous report should
be referred to.
Motors are fitted with ‘sealed for life’ bearings and do not require any
lubrication. All dampers should be rotated and lubricated as necessary.
11.1 Fans
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:
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The power supply to the motor is switched off.
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The fan impeller is at rest.
Measures are taken to ensure that the accidental, uncontrolled running
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.
11.2 General Fan Maintenance
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.
11.3 Bearings
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.
11.4 Filters
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.
10.0 COMMISSIONING
Before commissioning the unit, ensure that all equipment has been
assembled in accordance with the installation procedure all instances
where the unit is in operation the access doors should remain closed; at
no time, during maintenance or otherwise, should anyone be inside a
unit whilst it is in operation.
10.1 Fan & Motor
Care should be taken to ensure that the fan and motor run freely and
that the fan is rotating in the correct direction.
The electrical current being drawn by motors should not exceed the
manufacturers recommendations (specified on the motor plate). If
the current exceeds this, check the fan volume flow rate and the static
resistance.
10.2 Commissioning Checklist
•
All equipment received is according to specification/order.
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Any damage to unit identified.
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Fan base shipping restraints / Fixing Brace removed (if applicable).
•
The correct installation procedure has been carried out in
accordance to Nuaire’s recommendations.
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Any fan and thermal wheel motor pulleys are properly aligned.
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Anti-vibration mounts are adjusted accordingly.
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Check / adjust fan and thermal wheel belt tension.
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Rotate fan impellers and motors to ensure they run freely.
•
Check any additional bearings and couplings (where fitted
manually).
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Condensate drain traps are checked. Check all filters are correctly
fitted.
•
Ensure ductwork is complete.
•
Check electrical supply voltage and tightness of all electrical
connections.
•
Ensure control damper operation.
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Ensure access panels and doors are fitted properly and secure.
•
Check fan motor current draw.
