Vortice 45731, Instruction Booklet

Page: 22 / 48

Single phase motors
Fig. 3 shows the electrical connections for each versions of single phase motors:
Three phases motors
Every three phases motors have 2 available electric connections; the installer can choose the designed
connection:
-
Δ
connection Fig. 4a;
- Y connection Fig. 4b.
NOTE:
• The installer is responsible for connecting optional safety devices that automatically turn the appliance OFF
when the inspection panel is opened. The installation of micro-switches, like any other electrical safety device
fitted, must completely stop the appliance from operating. Should this happen, the power supply to appliance
can only be restored by manually turning the appliance switch back ON and by returning power to it from the
mains board.
• The installer is responsible for activating any safety devices on the appliance in accordance with the EC
Machinery Directive.
• All the wiring and electrical components used in the installation must comply with current European and local
legal requirements.
• All the QBK motors have, internally, a thermal protection (see “Maintenance and cleaning”).
Voltage and frequency
The motor feeding connection must be done according to the tension and frequency indicated in the fan’s plate.
Some differences (±5%) can be allowed in the power circuit. If the connection cannot keep this level there is a
high risk of burning the motor. Therefore, ensure the selected disposition of Y-1 corresponds to the tension of
the power circuit and use a tester to check besides the tension the frequency as well.
ENGLISH
3 3
Bianco / White
Rosso / Red Nero / Black
N L
Earthing connection
Connessione di messa a terra
Do not use
Non usare
Single phase 230V
Three phase 230V
V2
U2 W2
L3
W1 U1
L1
V1
L2
4a 4a 4b 4b
Three phase 400V
V2 U2 W2
W1
U1 V1
L1 L2 L3