Maintenance Instructions; Before Starting Maintenance Operations; Filters - Vallox 90 SE Series Instructions For Use And Maintenance Manual

MAINTENANCE INSTRUCTIONS

A
T
C
D
B
VALLOX 90 SE filters and heat recovery cell. The
units are available in right and left handed
models. In the right handed model (model R)
outdoor air comes to the unit from the right side
of the centre line as shown in the instructions.
In the left handed model (model L) outdoor air
comes from the left side of the unit. The filters,
summer / winter damper and the heating ra-
diator change places correspondingly.
E
VALLOX 90 SE
4. MAINTENANCE INSTRUCTIONS

4.1. Before starting maintenance operations

When you open the door of the VALLOX 90 SE unit, the safety switch (S) switches the unit
off; in spite of that, please disconnect the plug of the unit. Always disconnect the plug
before starting maintenance operations for the VALLOX 90 SE unit. The post- and preheating
radiators of the unit are PTC resistors.
When they are in operation, they have an alternating voltage of 230 V on the surface.
Because of this, the plug must always be disconnected before starting maintenance
operations.

4.2. Filters

When the maintenance reminder lights up the control panel indicator,
the cleanliness of the filters must be checked. Outdoor air is filtered
in the unit with two kinds of filters. A G3 class coarse filter (A) filters
off insects, heavy pollen and other dust. An F7 class fine filter (B)
filters off invisible dust. Extract air is filtered with a G3 class coarse
filter (C). Clean the coarse filters A and C by washing them at least
twice a year.
Wash the filters with +25...30˚C warm water and washing-up liquid,
pressing them smoothly. Do not handle the filters with force.
When washing is done properly, filters stand cleaning 3 to 4 times.
In other words, you have to replace them at least every two years.
REMEMBER!
Clean the filters at least twice a year. Set the maintenance reminder interval according
to your needs. See the instructions in section 3.3.18 (dependent on the cleanliness of
outdoor and indoor air).
The fine filter (B) is not washable. Clean it at the same time as the G3 class filters by
vacuuming it with a brush nozzle. When cleaning, be careful no to break filter material.
To ensure good supply air quality, replace the filter preferably every year, and at least every two years
depending on local air quality. It is recommended to replace filters in autumn. This way the filters
stay cleaner through the winter and can effectively filter off dust in the following spring.
In connection with the cleaning of the filters it is also advisable to check the cleanliness of
the heat recovery (HR) cell (D) at about two-year intervals. The sealing ledge (E) above the
HR cell must be torn off before it is possible to start removing the cell. When the sealing
ledge has been removed, the HR cell can be pulled out of the unit. Note! The laminas of
the HR cell are very thin and get easily damaged. The correct way to remove the HR cell
is to put your hands behind the HR cell and slowly pull the cell outward. If the HR cell is
dirty, soak it in a solution of water and washing-up liquid. Rinse the HR cell clean with a
jet of water. When all the water has drained off from between the laminas, you can put
the HR cell back in place. Finally, push the sealing ledge in place.
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