Service; Service Documentation - Grundfos CIM 040 TTL Installation And Operating Instructions Manual

5. Connect the other end of the TTL cable, see fig.
5, to the service port of the CU 3XX. See fig. 6.
Fig. 5 TTL cable
0V 12V
Fig. 6 Service port
6. Fix the earth clamp to the corner of the CU 3XX
enclosure with a screw, and fit the clamp on the
cable screen. See fig. 7.
0V 12V
Fig. 7 Earth clamp on cable to the CIU box
The clamp must be in contact with the cable screen
to ensure proper earth connection.

4. Service

4.1 Service documentation

Service documentation is available on
www.grundfos.com > International website >
Grundfos Product Center > Service.
If you have any questions, please contact the
nearest Grundfos company or service workshop.
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