GB.GOLDLP.170830
44 www.swegon.com
We reserve the right to alter specifications without notice.
17 MAINTENANCE
Warning
Before carrying out any work, make sure that the
power supply to the air handling unit has been
switched off.
17.1 Filter Change
The filters should be changed when the filter alarm has
been activated.
Order new filters from Swegon or your nearest Swegon
representative. State the type of air handling unit, and
whether the change involves one or two airflow direc-
tions.
N.B.! There are two types of replacement filter. One vari-
ant is for units installed in a false ceiling/horizontally, the
other is for units mounted by a wall. Therefore also specify
where and how the unit is located.
17.1.1 To Remove the Filters
The filters can be changed from two directions, from the
ordinary inspection side, but also from the extra inspec-
tion panel situated on the long sides of the unit. open the
inspection panel that is simplest to access. Unfasten the
filter locking piece that retains the filter cassette (located
inside the air handling unit toward the inspection side).
Withdraw the filters.
It is advisable to clean inside the filter space while the
filters are removed.
17.1.2 To Install New Filters
Place the filter in the appropriate groove (located inside
the unit toward the back side) and refit the filter locking
piece.
Check that the filter cassettes fit tightly.
Close the inspection panel.
Carry out a filter calibration as described in Section 7.4.2.
17.2 Cleaning and Inspection
17.2.1 General
Clean the interior of the air handling unit if needed.
Inspect the air handling unit when you change filters or at
least twice a year. Also inspect the air handling unit fasten-
ers that secure it to the false ceiling, wall or floor.
17.2.2 Filter Spaces
The most appropriate time to clean the unit is when you
change the filters.
17.2.3 Heat Exchanger
Check at least twice a year whether cleaning is necessary.
Cleaning can be done from the filter space.
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 everywhere. 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If needed, the heat exchanger can be withdrawn from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.
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!
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.
18.2.4 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.
Clean or brush off the fan motor. It can also be cleaned by
carefully wiping it with a damp cloth and with dishwash-
ing detergent.
Clean the fan space, if needed.
17.3 Performance Checks
General performance checks should be carried out in con-
junction with a filter change or at least once a year.
It is then appropriate to compare the current performance
values of the unit with the Commissioning Record. Reme-
dial measures should be taken to correct any possible
deviations.
To Next Page
Loading...
