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Maintenance
DANGER
Electric shock!
There is a risk of fatal injury from electric shock when working on electrical
devices!
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9.3
Dismantling/installation
Before any dismantling/installation operation, make sure that the "Shutdown"
section has been taken into consideration!
WARNING
Risk of burns!
Incorrect dismantling/installation can result in personal injury and material dam-
age.
Depending on the operating status of the pump and the system (fluid temper-
ature), the entire pump can get very hot.
There is a severe risk of burns from simply touching the pump!
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Work on electrical components may only be carried out by qualified electricians!
Switch off the voltage on all-poles of the pump and secure against unauthorised
restart!
Always deactivate the power supply from the pump and if necessary SSM and
SBM!
Due to the presence of dangerous contact voltage, work on the module must
not be started until 5 minutes have elapsed!
Check whether all connections (even potential-free contacts) are voltage-free!
The pump may still be live even in voltage-free state. The rotor induces a con-
tact voltage, which is also present at the motor contacts. Close the existing
shut-off devices in front of and behind the pump!
If the control module/cable is damaged, do not operate the pump!
In case of impermissible removal of operating and settings elements on the con-
trol module, there is a risk of electrical shock if inner electrical components are
touched!
Allow the system and pump to cool to room temperature!
WILO SE 2022-04
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