7. Errors and error remedying
51
7.3 Replacing the backup battery
Because of energised components in the electronics housing there is a risk of injuries
due to electric shock or burns.
Therefore such work may only be performed by a qualified electrician under strict obser-
vation of the attached warning labels and with due regard to standard approved rules of
electrical engineering.
1. As a precaution, make a backup copy of the logbook entries.
2.
Do not
turn off the power supply to avoid any loss of data.
3. Open the cover of the electronics housing.
Procedure - Replacing the backup battery:
Button cell CR2032 (for STE article number
33011070):
1. Carefully remove the old backup battery a) from its holder
2. Insert the new backup battery.
3. Always observe the correct polarity (positive pole on top)!
4. Close the cover of the electronics housing again.
5. Check whether the date and time settings are still correct, and
whether the logbook entries are still there.
If the backup battery is not replaced in time, the following data will be lost:
Date and time.