Genibus; Service; Maintenance; Replacement Of Io 351 - Grundfos IO 351 Installation And Operating Instructions Manual

10. GENIbus

CU 351 and IO 351 and E-pumps communicate by
means of GENIbus.

11. Service

IO 351 cannot be serviced. If the module is faulty, it
must be replaced.
Related information
13. Replacement of IO 351

12. Maintenance

The IO 351 is maintenance-free during normal use
and operation. IO 351 must only be cleaned with a
dust-free cloth.

13. Replacement of IO 351

1. Switch off the power supply to the IO 351.
2. Switch off the power supply to components with
external supply.
3. Mark the individual conductors with the numbers
of the corresponding terminals.
4. Disconnect all conductors.
5. Pull the locking tabs free of the rail, see fig. Rail
locking tabs. The module can now be lifted off the
rail.
6. Mount the new IO 351, see section
16
Rail locking tabs
Related information
4.4 Mounting
4.4 Mounting.