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Follow the following instructions to achieve optimal
performance:
Before you open the unit, turn off the power/
pull out the plug and wait until the fans have
stopped completely.
A couple of days after the primary installation, check that
the condensation outlet is working.
Environmental requirements
When repairing or dismantling the unit, statutory
environmental regulations must be observed regarding
recycling and destruction of various materials.
7.1 Unit
Filters
When the alarm flashes in the control panel display, the
filters must be changed. Stop the system using the circuit
breaker of the unit or the circuit breaker on the terminal
board. Open the front cover/filter drawers and remove the
filters. Once the filters are changed, reset the filter timer.
There is a danger of cuts from sharp edges.
The edges must not be damaged.
Vacuum cleaning or using pressurised air on the
filters is not recommended as it can impair filter
performance.
G4 = Standard filter
F5 = Fine filter
F7 = Pollen filter
Condensation drain:
When changing the filter in August/September, before the
outside temperature falls to 5°C, check that the
condensation drain is not blocked by dirt and make sure
that there is water in the water trap. Pour 1 litre of water
into the condensation tray and make sure that it runs off
freely. If the condensation drain does not work, this could
lead to water damage at your home.
Heat exchanger:
Inspect the heat exchanger every year. If it is dirty,
remove it and:
• Alu-exchanger: Wash in lukewarm soapy water and rinse
using a hand shower, if necessary.
• Plastic exchanger: No cleaning with solvents – use only
clean water and carefully remove dust from air intake
surfaces with a household vacuum cleaner.
Fans
Inspect the two fan wheels for dirt every year. If they are
dirty, they can be washed with a brush, bottle cleaner, etc.
Supply air and extract air valves
Clean the valves by wiping them with a dry cloth.
Make sure that the valves do not turn causing changes to
the air volume.
7.2 Alarms
Filter timer
The control has a filter timer to guarantee that the filter is
changed and that optimal operation is achieved. When the
timer reaches the set value, a key will flash in the display
until the filters have been changed.
Once the filters are changed, press and hold down the filter
indicator key until the diode switches off.
7.3 Dismantling/taking the system out of service
Do as follows:
Disconnect the power supply, i.e. the power cables.
Disconnect the condensation outlet and power cables for
any reheaters/preheaters. Disconnect the cables to the
control panel and dismantle ducts.
If the system should be taken out of service, the ducts must
be dismantled to avoid condensed water in the system and
in the ducts. Close all supply air and extract air valves.
7. MAINTENANCE
