FUTURE® S AIR HANDLING UNIT
OPERATION AND MAINTENANCE
INSTRUCTIONS
15 December 2020
Ver 1.7 (We reserve the right to changes without prior notice)
25
7.4 Maintenance
The maintenance interval is 6 months. It is advisable to have the unit serviced at the beginning (autumn) and
at the end (spring) of the heating season.
•
Check and, if necessary, clean the heat transfer surfaces according to a separate instruction (Section
7.4.1).
•
Check that the rotor is in a vertical position and in the middle of the frame. If necessary, adjust the
vertical and horizontal position according to a separate instruction (Section 7.4.2).
•
Make sure that the brush seals on the circumference lightly touch the surface of the arch plate. Also
check that the brush seals on the lower surface of the rotor mid-beams touch the surface of the
exchanger. Replace damaged brush seals.
•
Check that the belt is suitably tight. If the belt slips during start-up or stop, it must be tightened or
possibly replaced according to a separate instruction.
•
Check that the speed control operates properly.
•
Check the bearing noise and vibration. Under normal conditions, there is no need to add lubrication,
as the lubrication in the unit is designed to last throughout its life cycle.
7.4.1 Cleaning
Check the surface of the rotor regularly.
The following cleaning instructions are recommended as part of the annual inspection:
•
Vacuum cleaning with a soft nozzle. Wiping with a dry brush.
•
Compressed air (4–6 bar) can be used for heavier dirt that is not sticky.
CAUTION
If you use a brush, make sure not to damage the heat exchanger lamellas.
CAUTION
If you use compressed air, point the nozzle perpendicular to the lamellas, and blow toward
the dirty side from the clean side.
CAUTION
Loose dirt must be removed from the casing after cleaning.
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