Xylem HVS 1.1 - 3.4 - Manual (Page 7)

7
All work carried out when the HYDROVAR sensorless is open may only be
performed by qualified authorised staff.
Furthermore, care must be taken not to short circuit the neighbouring
components when connecting the external control wires and that open
cable ends which are not in use are insulated.
The HYDROVAR sensorless contains electronic safety devices which switch
off the control element in the event of faults, whereby the motor has zero
current but remains energised and comes to a halt. The motor can also be
halted by mechanical blocking. If it is switched off electronically the motor
is disconnected from the mains voltage through the electronics of the
HYDROVAR sensorless but is not potential-free in the circuit.
In addition voltage fluctuations, especially power failures can cause the
system to switch off itself.
Repair of faults can cause the motor to start up again.
The system may only be put into operation when it has been earthened. In addition,
equipotential bonding of all pipes must be ensured.
The operating instructions have to be read, understood and followed by the operating
personnel. We point out that we accept no liability for damage and operating disorders
which are the result of non-compliance with the operating instructions.
NOTICE! High voltage tests of the inverter or the motor may damage the
electronic components! Hence bridge before the in- and outgoing
terminals L -N -- U- V-W.
To avoid incorrect metering by capacitors incorporated in the
electronic part isolate the motor from the HYDROVAR sensorless.
Preliminary Inspection
Visual Inspection
Upon delivery, check the integrity of the packaging.
After you have removed the external packaging, visually inspect the converter to make sure
it has suffered no damage during transport. If any damage is visible, inform your
distributor within 8 days from the delivery date.
Handling and Storage
The product must be lifted and handled carefully.
During transport and storage, protect the converter from humidity and mechanical damage
caused by impacts, falls, etc...
ATTENTION:
Dispose of all packing materials and the unit in accordance with local regulations.