7. Close the filter insertion fields and the heat exchanger with the foam cover.
8. Hang the front plate in the tin fold of the housing, and press the front plate in the area of the spring
locks to the housing to this in the spring locks engages.
9. Re-establish the mains connection.
Reset of filter runtime 2.3.2
After a filter change the counter for the filter runtime has to be reset. The reset is carried out by pushing
the button boost ventilation mode / reset filter runtime > 3 s. The quick flashing cycle of the LED in the
filter-symbol is ended.
All maintenance work performed must be documented in check list A!
What to do in the event of a failure? 2.3.3
Please contact the installer immediately in the event of a failure. Make a note of the error display and the
failure code respectively. Also note down the type of your FOCUS, for that purpose, see type plate on the
side of the device.
The mains connection must always be available, unless the FOCUS must be put out of operation due to a
serious failure, maintenance work or for other imperative reasons.
As soon as a power disconnection has been performed, the living space is not
mechanically ventilated anymore. This may cause moisture and mould problems in the
living space. Therefore, the long-term shutdown of the FOCUS has to be avoided!
For the period of absence, the plant should be operated at the lowest fan speed or in the
un-occupied mode!
Disposal 2.4
When the life time cycle of your FOCUS has expired, the company PAUL Wärmerückgewinnung GmbH
offers you free take-back. If you do not make use of the possibility of feedback of recyclable product parts
into the cycle of materials, we would like to remind you that the FOCUS must not be disposed of in the
normal household garbage. For this kind of disposal, please obtain information on the possibilities of
reuse of components or the eco-friendly treatment of the materials from you community.
3 Hints for qualified personnel
This section describes how to install and commission the FOCUS, how to analyse errors and how to carry
out special maintenance work.
Installation requirements 3.1
For proper installation, the following requirements must be fulfilled:
Assembly in accordance with the general and on-site safety and installation instructions, amongst
others of the electric power station and water works as well as in accordance with the instructions
contained in this operating manual.
Frost-free room in the interior
Voltage supply 230 Vac, 50-60 Hz
Sufficient space for air duct connections and maintenance work
Transport and packing 3.1.1
Proceed with care when transporting and unpacking the FOCUS.
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