User's Manual

Doc. No.
Rev.
Date
DRAFT
1.01
2012-01-27
Damm Cellular Systems A/S, Denmark
TetraFlex
®
7.5 Manual - SB421
TetraFlex® 7.5 Manual 1-16
Note: If an internal battery kit is mounted, pull out the battery connector J40 for the internal
battery and insert the free connector for the external battery into J40 instead.
If no internal battery kit is present, the external battery plug is inserted from factory.
WARNING: Please observe polarity of the external battery leads.
Serious damage to the SB421 WILL occur if not polarized correctly.
Also switch from internal temperature sensor to external temperature sensor using SW 171
on the interconnection board (top right hand corner)
o Unplug the external battery cable from J40
o Insert the internal battery cable plug into J40
o Place the battery temperature sensor switch in the upper position (internal battery)
o Connect the 3 jumper wires (pos.101-103) to the battery terminals.
The battery is now installed and ready for use.