104
DS440IS
8.
MAINTENANCE
8.1
Lithium battery
On switching on the terminal, it performs a check on the condition of the internal lithium battery. If the
battery is discharged, the terminal displays the message
CHANGE THE BATTERY
. To change the
battery, contact Assistance Service.
8.2
Casings
Prevent dust from building up on the power supplier and terminal casings.
8.3
Test of the system
Besides the information given par. 4.8 on page 1-44, refer to standard EN60079-17.