Landis+Gyr E65C Series User Manual page 16

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© Landis+Gyr
Excessive Number of Power Failures reduces Life of Product
The CU writes to it internal FLASH memory every time that there is a power
failure. This type of memory has a life of approximately 100,000 write
cycles. This is not a guaranteed value. For a life of 15 years, that amounts
to approximately 15 power failures per day. Environments exceeding this
limit may shorten the useful life of the product.
Older version of CU should not be used in new meters
The CU is designed to be interoperable with all existing meters at the time
that it was designed. Once a device is obsolete and is replaced by a newer
version of the product, interoperability testing stops. This means that older
CU product that have been in the field for some number of years should not
be used with new meters even though they can be inserted into the meter.
Fit the communication unit in the meter as follows (with SIM-card inserted
according to section 4.1):
1. Ensure that no voltage is applied to the meter.
2. Remove the utility seals on the front door and terminal cover.
3. Open the front door and remove the terminal cover.
Fig. 4.2 Preparing the meter for fitting the communication unit
4. Remove the built-in "dummy" communication unit.
5. Insert the communication unit carefully at the place provided in the
meter. Ensure correct fitting of the connector.
D000043188 en d – E65C – CU-P40, P41, P42 – User Manual
Installation/De-installation