GB.SILVERSK.170901
We reserve the right to alter specifications.
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4.2 Cleaning and Inspection
4.2.1 General
Clean the interior of the air handling unit if needed.
Inspection of the air handling unit should be performed
when you change filters or at least twice a year.
4.2.2 Filter spaces
The most appropriate time to clean the unit is when you
change the filters.
4.2.3 Heat exchangers
Check at least twice a year whether cleaning is necessary.
Cleaning can be done from the filter space.
Rotary heat exchanger
The heat exchanger should above all be cleaned by
vacuum cleaning with a soft nozzle to prevent damage to
the air passages in the rotor.
Turn the rotor by hand to reach all surfaces. If the heat
exchanger is substantially fouled, its surfaces can be
blown clean with compressed air.
If needed, the heat exchanger can be withdrawn from
the unit casing and washed with degreasing solvent. Only
service personnel trained by Swegon shall be permitted to
wash it in this way.
Vinyl-coated fabric seal
Lift up the fabric seal and inspect its underside. Clean if
needed by brushing or vacuum cleaning.
If the vinyl-coated fabric seal is worn or substantially
fouled, it should be replaced. Do not lubricate it!
Drive belt tension
Replace the drive belt if it feels loose or worn and slightly
slips if it meets resistance. Contact service personnel
trained by Swegon.
Plate heat exchanger
Always clean against the regular direction of airflow.
Cleaning must only be done by blowing with compressed
air, vacuum cleaning with a soft nozzle or wet cleaning
with water and/or solvent. Before you begin cleaning,
cover adjacent functional sections to protect them.
If cleaning solvent is used, do not use solvent that will
corrode aluminium or copper. Swegon's cleaning agent
is recommended. This cleaning agent is sold by Swegon
Service.
Inspect the drain to make sure that it isn’t clogged. The
by-pass and shut-off dampers do not require mainte-
nance.
Coil heat exchangers
Make sure that the coils are purged of air. If a droplet
eliminator is fitted, remove it and flush it clean with water.
Always clean against the regular direction of airflow.
Cleaning must only be done by blowing with compressed
air, vacuum cleaning with a soft nozzle or wet cleaning
with water and/or solvent. Before you begin cleaning,
cover adjacent functional sections to protect them.
If cleaning solvent is used, do not use solvent that will
corrode aluminium or copper. Swegon's cleaning agent
is recommended. This cleaning agent is sold by Swegon
Service.
While cleaning, check whether venting is necessary, check
the content of glycol in the water and the condition of the
coil for leakage. Also check that the drain is not clogged.
4.2.4 Fans and fan spaces
Inspect and, if needed, clean the fan impellers to remove
dirt deposits.
Check the impeller to make sure that it is not out of bal-
ance.
Vacuum clean the fan motor or brush its surfaces. It can
also be cleaned by carefully wiping it with a damp cloth
and dishwashing detergent.
Clean the fan space, if needed.
4.3 General inspection
A general inspection should be performed whenever you
change filters or at least once a year.
Parts subject to wear such as fan bearings, seals, drive
belts, etc. should be checked and be replaced if necessary.
