Grundfos MAGNA3 25-80 Installation And Operating Instructions Manual page 57

11.2.2 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.
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 switch in
position 0. Type and requirements as specified in
EN 60204-1, 5.3.2.
Pumps older than model C must have a CIM module
mounted in both the slave and master pump.
Pumps from model C together with newer versions of
CIM modules only requires for the CIM module to be
mounted on the master pump, not on the slave. See
section 11.2 Communication interface module,
Step Action
A. Terminal-connected versions:
Remove the front cover from the control box.
1
B. Plug-connected versions:
Open the front cover.
2 Unscrew the earth connection.
CIM.
A
B
Illustration
57