Xylem HVS 1.1 - 3.4 - Manual (Page 14)

14
3.2 Electric installation and wiring
3.2.1 Means of protection
Ask your power supply company which means of protection are required.
Applicable: AC and DC current-operated circuit breaker (FI), TN systems, protective
circuits.
When using a FI protection switch, make sure that it also releases in the event of
a DC fault, use for each Hydrovar sensorless a separate FI-switch!
3.2.2 Wiring the Hydrovar sensorless to the motor
Remove the 3 screws holding the top of the Hydrovar sensorless. Carefully lift the top,
loose the earth screw and put the Hydrovar sensorless cover aside.
Now you can see the 2 main parts:
(1) control card with all terminals for the control signals and the RS485 interface
(2)
main card with all power components and terminals for power supply and motor
NOTICE!
All installations and maintenance have to be performed by
trained and qualified personnel with proper tools!!
WARNING!
In case of a failure, disconnect and lockout electrical power and wait
five minutes for capacitor discharge before servicing the Hydrovar
sensorless.