Vortice VORT LETO MEV Notice D'emploi Et D'entretien page 25

ENGLISH
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Adjusting potentiometers
The electronics board fitted to appliances in the Vort
Leto Mev range has two potentiometers for setting the
minimum and maximum speed parameters (medium
speed is the average of previously set min and max
configurations). The setting of parameters must be
carried out within one hour of connecting the
appliance to the mains. To make adjustments after
this period, the appliance will have to be disconnected
then reconnected to the mains.
appliance keeps the previous settings and over-rides
the positions of the potentiometers that need to be re-
set by being turned fully anti-clockwise to start
making new settings.
Before starting to adjust the settings, the two
potentiometers must be set to "0". Under these
conditions, the default settings are V max =600 and
V min = 400.
Setting procedure:
• with the speed selector circuit breaker closed;
• change V max from 600 to 2500 rpm - (fig.15);
• open the speed selector circuit breaker;
• change V min from 400 to V max - (fig.16);
• wait 5 minutes for the appliance to memorise the
new settings;
• turn the power supply to the appliance OFF;
• turn the appliance back ON and check that the new
settings have been successfully stored.
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16 16
On re-start, the
If the minimum air-flow required for a specific
installation cannot be satisfied at the minimum speed,
the appliance will have to be set so that the minimum
air-flow is obtained at medium speed.
N.B.
The setting should be made first to the V max then the
V min potentiometer.
N.B.
Obtaining the necessary air-flow in each area served
by the installation involves both the speed setting and
the degree to which intake vents in the area are
opened.
N.B.
Increasing the speed of the motor leads to an increase
in power consumption and noise emission.
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