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Power supply unit UPS 60, Order No. 77 3400 10<br />
service life of 5 – 7 years. This time, however, strongly depends on the relevant ambient temperature.<br />
(Up to 20 °C: 7 – 8 years as shown in diagram 1)<br />
If the system will not be used for an extended period of time, the batteries should be fully charged to<br />
prevent a total discharge. (Refer to item 7 "Storage") While the system is not used, the battery fuse<br />
has to be removed to prevent total discharge.<br />
Battery service life (years)<br />
Temperature<br />
Diagram 1: Battery service life in relation to ambient temperature<br />
6.1 Battery change<br />
Pb<br />
Lead-gel batteries contain harmful toxic substances. Observe valid safety directives when<br />
during handling and transport. For disposal, comply with local directives.<br />
Batteries bear the risk of excessive short-circuit currents. Never create any direct contact<br />
between the battery posts and or other conductive component parts. Therefore remove any<br />
wristband, watch, finger rings or other metal objects when working at the open unit. Always<br />
use tools with standard isolating handles.<br />
Batteries may be replaced only by the same type of battery (2 x 12 V; 24 Ah). We recommend the use<br />
of two batteries type BAT 12-24, <strong>Tunstall</strong> Order No. 00 0648 87. The use of other makes may create<br />
problems due to different connecting terminals or differing dimensions.<br />
1. Shut off mains supply to the power supply unit UPS 60 !!!<br />
2. Refer to the information for the battery set for UPS 60, order no. 77 3450 00.<br />
3. Perform a functional check of the power supply UPS 60!<br />
7. Storage<br />
If the power supply unit UPS 60 will not be used for an extended period of time, the connected<br />
batteries must first be fully recharged to preclude battery damage due to total discharging. (Refer to<br />
item 6 Battery service life).<br />
• For the charging process, the power supply unit UPS 60 shall be connected to the mains supply<br />
for at least 4 hours, and the UPS function shall be activated by placing the bridging contact<br />
between "x“ and "y“.<br />
• While the power supply unit UPS 60 is not used, the power supply unit UPS 60 must be<br />
disconnected from the batteries of battery set for UPS 60 to prevent total discharge.<br />
© <strong>Tunstall</strong> <strong>GmbH</strong>, Orkotten 66, 48291 Telgte, Germany, www.tunstall.de, 00 8802 81, Rev. 2.1 (05/2008) English - 5<br />
<strong>Technical</strong> <strong>Manual</strong> Page 148
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