Landis+Gyr ZMQ202, User Manual

Page: 82 / 88

Gyr H 71 0200 0215 f en - ZMQ202 / ZFQ202 - User Manual
82/88 Maintenance
Changing the Communication Unit in f6 Meters
1. Switch off the voltage. The phase voltage display ( L1 L2 L3)
disappears.
2. Switch off tariff inputs and synchronisation input. Check if the
corresponding indicators disappear from the display.
3. Switch off the voltage for the additional power supply.
4. Check that all connections are free from voltage.
5. Remove the two utility's seals on the terminal cover, release the two
screws and remove the terminal cover.
6. Remove the communication unit (or dummy).
7. Carefully insert the new communication unit ensuring the plug and
socket are properly engaged.
8. Connect the connecting wires to the terminals of the communication
unit.
9. Carry out functional tests as described in the relevant communication
unit manual to ensure it is functioning correctly.
10. Replace the terminal cover, close the front door, and re-seal.