Grundfos MAGNA3 D Installation And Operating Instructions Manual page 64

13.2.2 Installing a communication interface module
WARNING
Electric shock
Death or serious personal injury
- Make sure that other pumps or sources do not
force flow through the pump even if the pump is
stopped. This will cause the motor to act like a
generator, resulting in voltage on the pump.
Step Action
1 Remove the front cover from the control box.
2 Unscrew the ground connection.
Fit the communication interface module as illustrated and
3
click it on.
64
WARNING
Electric shock
Death or serious personal injury
- Switch off the power supply for at least 3 minutes
before you start any work on the product. Make
sure that the power supply cannot be accidentally
switched on.
- It must be possible to lock the main disconnect
switch to the Off position. Type and requirements
as specified in national, state, and local
regulations.
Illustration