VALLOX 75/95
10
MAINTENANCE INSTRUCTIONS
FANS
The supply and extract air fans (D and E) have been fastened with rubber
collars (F). When removing the fans for maintenance, release the ear (K) fixed
to the fan over the rubber collar (F) flange by turning the ear to the upright
position. Lift the rubber collar out of the opening and turn the fan so that it
can be lifted away from the support (M). Remove the plug (G) of the fan.
Cleaning the fans
Clean the fan blades with compressed air or with brush. Each blade has to
be so clean that the fans stay balanced. Take care not to unfasten the balancing
pieces attached to the fan blades.
If you use water in cleaning the unit or its parts, do not let it flow into the electrical parts.
Unfastening and fastening of the self-actuated one-way
damper (vacuum damper)
Y
K
F
B
Y
K
F
C
Y
K
F
A
T
Thermostat sensor has been unlocked. Detach the sensor by turning the collar to
the direction shown by the arrow.
When remounting the sensor, turn the collar to the direction shown by the arrow
to make the claws lock in the open position, check that the green indicator dot is
visible and push the thermostat sensor to attach it to the body of the valve.
Y
F
T
K
Thermostat part and one-way damper in the VKL model
Unfastening and fastening of the thermostat part of the self-actuated valve
A
B
C
Put the hook on the edge of the damper (Y) under the back edge
of the fastening collar (K) of the fan (F) and push the damper
down till the guiding edges of the valve go inside the rubber
collar.
Push the front edge of the collar with your finger.
Put the hook on the front edge of the damper below
the front edge of the collar.
When unfastening the damper, take the same steps in the opposite
order.
Self-actuated one-way dampers are only used in VKL model units.
CONDENSING WATER
During the heating season, humidity of extract air condenses to water. Water
formation may be abundant in new buildings or if ventilation is low compared
to the humidity build-up caused by the residents.
OTHER CLEANING
In connection with maintenance, also check the inner surface of the unit and the condensing
water reservoir. If they are dirty, clean them gently with a damp cloth, brush, vacuum cleaner
or similar. Keep the unit clean to ensure its flawless operation and hygiene.
Condensing water needs to flow out from the ventilation unit without hindrance. In connection
with maintenance, e.g. in autumn before the beginning of the heating season, make sure that
the condensing water outlet in the bottom reservoir is not clogged. You may check it by
pouring a little water in the reservoir.
Do not let water flow into electrical devices.
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