Tunstall FlamencoIP Technical Manual page 234

3. Service
We recommend replacing the batteries every 2 years as part of regular maintenance.
4. Battery service life
The battery set UPS 60 comes with maintenance-free, valve regulated lead acid type (VRLA) AGM
batteries. Based on their EUROBAT classification, these batteries have a service life of 3 - 5 years.
Their usable life is highly dependent on temperature (up to 20°C: 4 - 6 years; see diagram 1). The
capacity of the batteries is around 60% after 3 - 5 years.
If the system will not be used for an extended period of time, the batteries should be fully charged to
prevent a total discharge. (Refer to item 5 "Storage") While the system is not used, the battery fuse
(located between the two batteries) has to be removed to prevent total discharge. After the charging
process has been completed, the battery set for UPS 60 has to be disconnected from the power
supply unit UPS 60 by disconnecting the battery connection cable (see chapter 2.) or by removing the
battery fuse.
Temperature
Diagram 1: Battery service life in relation to ambient temperature
4.1 Replacing batteries
Lead-acid AGM batteries contain hazardous, poisonous substances. When handling the
batteries, and during transport and disposal, local regulations must be adhered to.
Warning!
Batteries are subject to the risk of an excessively high short-circuit current. To prevent
this, do not connect anything between the battery contacts and other conductive parts.
For this reason, you should remove any watches, bracelets, rings and other metal
objects before starting work on the open unit.
Only use tools with handles that have standard insulation.
Batteries may be replaced only by the same type of battery (2 x 12 V; 24 Ah). The batteries must only
be replaced with the battery type BAT 12-24, Tunstall order no. 00 0648 87. Other batteries may result
in problems because of their connections and dimensions.
Risk of electric shock!
Before opening the housing, you must disconnect the power supply unit UPS 60 from the
power. Failure to observe this may result in persons touching live parts or experiencing
serious injury.
1. Disconnect the power supply unit UPS 60 from the power.
2. Release the six fastening screws for the cover and remove the cover to the front.
3. Remove the battery fuse FKS 20A from the fuse-holder located between the two batteries.
© Tunstall GmbH, Orkotten 66, 48291 Telgte, Germany, www.tunstall.de, 00 8802 82, Rev. 5.0 (04/2016)
Product leaflets 03/2018, page 119
Battery Set for UPS 60, Order No. 77 3450 00
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