3 Maintenance
3.1.4 Changing the battery in the measuring system
3HAC026320-001 Revision: A 61
1)
Because of material aging, the maximum life in service is 5 years.
Voltage of batteries, measured at power off:
Exchange of the battery is done according to the beginning of this section.
User type Exchange 3-cell Exchange 6-cell
1. Vacation (4 weeks) power off Every 5 years Every 5 years
1
2. Weekend power off + user type 1 Every 2 years Every 4 years
3. Nightly power off + user type 1 and 2 Every year Every 2 years
Min. Max.
Ni-Cd 7.0 V 8.7 V
Lithium 7.0 V -