Bosch CL300 Manual page 159

Flexible Automation
7 Maintenance
7.1 Buffer Battery Replacement
Procedure
The buffer battery should be replaced in the following cases with the
CL300 controller is switched on:
After one year of operating time.
D
When the special marker SM31.1 Preventive battery fault indica
D
tion" is set.
When the Battery Fault" LED lights after the controller is switched
D
on. If this is the case, data loss may already have occurred.
To prevent this, we recommend to always keep a buffer battery in stock.
Buffer battery replacement is to be made as described in paragraph
4.1.5.
Maintenance
7−3