1important safety instructions – Xylem HYDROVAR Smart User Manual
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Important safety instructions
Read and follow the operating instructions
and safety instructions carefully before
starting operations! All modifications must be
done by qualified technicians!
In addition to the instructions contained in these operating instructions please pay
attention to universal safety and accident prevention regulations.
Warns that disregarding of the regulations may cause electric shock.
Warns that disregarding of the regulations may cause personal injury or
damage to property.
The HYDROVAR-Smart control unit must be disconnected from the power supply before
any work can be carried out in the electrical or mechanical part of the system.
Installation, maintenance and repair work may only be carried out by trained, skilled and
qualified personnel.
Unauthorised modifications or changes to the system make all guarantees null and void.
When in operation, the motor can be stopped by remote control, whereby the inverter and
the motor remain under voltage. For safety reasons, the unit has to be disconnected from
the power supply when carrying out work on the machinery as locking out the equipment
by switching off the release mechanism or set value cannot prevent accidental starting of
the motor.
The HYDROVAR-Smart works with a low voltage supply of 24VAC/DC.
Nevertheless it is not allowed to touch any parts of the unit, when power
supply is on. Because of the possibility to connect external voltages to the
relays, at some places of the HYDROVAR-Smart, there can be dangerous
voltages!
Touching these components seriously endangers life !
Before removing the HYDROVAR-SMART the system must be disconnected
from the power supply. After switching off the power supply wait
at least 5 minutes before starting work on or in the HYDROVAR-SMART
drive head (the capacitors in the intermediate circuit of the inverter have to
be discharged by the installed discharge resistors first).
Please refer also to the instruction manual of the connected frequency
converter and read it carefully!