GB.GOLDSKE.160901
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We reserve the right to alter specifications without notice.
7.2 Cleaning and Inspection
7.2.1 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.
7.2.2 Filter spaces
The most appropriate time to clean the unit is when you change
the filters.
7.2.3 Heat exchangers
Check at least twice a year whether cleaning is necessary. Clean-
ing 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 pas-
sages 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If needed, the heat exchanger can be withdrawn from the unit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 person-
nel 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 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 exchangers
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 func-
tional 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 maintenance.
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 func-
tional 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.
7.2.4 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 balance.
Vacuum clean the fan motor or brush its surfaces. It can also be
cleaned by carefully wiping it with a damp cloth and with dish-
washing detergent.
Clean the fan space, if needed.
7.3 General inspection and func-
tionality check
A general inspection and functionality check should be perfor-
med 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.
Compare the air handling unit‘s values with the commissioning
report. Remedial measures should be taken to correct any possi-
ble inconsistencies.
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