Battery Pack Maintenance; Battery Pack Replacement - GE Medical Systems Solar 9500 Service Manual

Battery Pack Maintenance

Battery Pack Replacement

6-6
Maintenance: Battery Pack Maintenance
The battery pack consists of 11 Nickel-Cadmium cells that deliver 13.2
volts of DC power. The battery pack provides a soft shutdown in the
event of interrupted AC power.
The Riser Interface PCB (801376-001) has a capacity counter that keeps
track of how many seconds of charge the battery pack has. Every time
the Solar 9500 uses the battery to shutdown, the capacity counter
decreases and as AC power is reapplied it increases. Four hours of
charging time is equivalent to 18 seconds of discharge time. A fully
charged battery pack has a capacity of 360 seconds and can handle about
thirteen consecutive power interrupted shutdowns.
When a battery pack is replaced, the capacity counter on the Riser
Interface PCB is zeroed. This is done to prevent the Solar 9500 from
making a false assumption of the battery capacity. When the new battery
pack is connected, it takes 80 hours for the capacity counter to reach 360
regardless of the true capacity of the battery.
Replace the battery pack every two years or when a battery failure is
indicated during troubleshooting.
1. Power down the Solar 9500 (according to the procedure outlined in
chapter 3, Installation) and disconnect the monitor from the power
source and the network.
2. Remove the front cover.
3. Loosen the seven screws around the EMI cover and remove.
4. Disconnect the battery pack cable from the Power Supply assembly.
5. Loosen the two nuts on the battery pack, replace the pack and
retighten the nuts.
Solar 9500 Information Monitor
2001085-061
Revision A