Wilo Stratos GIGA Serie Instrucciones De Instalación Y Funcionamiento página 31

Installation notes
Installation and operating instructions Wilo-Stratos GIGA
DANGER! Danger of death!
For generator operation or turbine operation of the pump (rotor
drive), there may be a dangerous contact voltage at the module's
contacts.
• Close the shut-off device in front of and behind the pump.
DANGER! Danger of death!
Contact voltage can be life-threatening.
Work on the module may only be started after waiting five min-
utes, due to the dangerous residual contact voltage (capacitors).
• Before working on the pump, disconnect the power supply and
wait for five minutes.
• Check to ensure all connections (including potential-free con-
tacts) are voltage-free.
• Open the module only to carry out the electrical connection of
the pump at the corresponding terminals, as described in this
chapter. Never open the module to have access to the internal
components. No work must be done at the components which are
located inside the module.
• Never use an object to poke around the openings on the module
and never insert anything into the module!
WARNING! Danger of mains overload!
An inadequate mains design can lead to system failures and even
to cable fires due to mains overload.
• When designing the mains, with regard to the cable cross-sec-
tions and fuses, give special consideration to the fact that short-
term simultaneous operation of all pumps is possible in multi-
pump operation.
CAUTION! Possible damage of the pump!
In insulation tests with a high-voltage generator the pump is to be
disconnected on all poles from the mains in the control module.
The free cable ends are to be insulated in accordance with the
voltage of the highvoltage generator.
Integral solid state short circuit protection does not provide branch
circuit protection. Branch circuit protection must be provided in
accordance with the Manufacturer Instructions, National Electrical
Code and any additional local codes.
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