Service Manual

GSM-204-523
Replacing the internal batteries
31st Oct 01
Maint. 3–26
Maintenance Information: Horizon macro outdoor
CONTROLLED INTRODUCTION
68P02902W04-A
Removing and
replacing the
batteries
If it is necessary to remove the batteries from the battery tray, use the following
procedure (letters and numbers in parentheses refer to Figure 3-13). Table 3-2
details the wiring schedule of the battery sense lead for reference.
NOTE
This procedure assumes that the battery tray has been
removed from the cabinet, as described previously.
CAUTION Each battery cable must be insulated as soon as it is
disconnected from the battery terminal.
Battery sense leads must be connected to the negative
terminal of the correct battery as shown in Figure 3-13.
1. Using spanners with insulated handles, undo the M5 screws and remove
the interconnection cable and the battery sense lead (B) from the rear
battery terminals (1).
2. Undo the M5 screws and remove the interconnection cables and battery
sense leads (C and D) from the middle battery terminals (2).
3. Disconnect the braid and battery sense lead (E) from the top terminal of
the circuit breaker (3).
4. Remove the two battery retaining brackets (4) by undoing the eight M4
screws.
5. Lift out the central insulation block (5) from between the middle terminals.
6. Remove the front insulator block (6) by undoing the two M4 screws on the
front panel of the battery tray.
7. Remove the circuit breaker (3) by undoing the two M3 screws on the front
panel of the battery tray.
8. Raise the upper rear battery (7) slightly, then disengage and remove the
handle (8).
9. Remove the rear battery, followed by the remaining batteries.
The procedure for removing the batteries is now complete. Remove the
L-shaped battery terminal (9) from from the upper battery terminal and fit onto
the new battery to be installed in that position.
Battery replacement is a reversal of the removal procedure.