Welch Allyn 300 Series Vital Signs Monitor - User Manual - Manual (Page 69)

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Reference
Battery operation
Battery low warning
When the battery charge is low, a warning tone sounds and the Low Battery indicator
flashes continuously. From the time
comes on, the battery has enough charge
remaining to perform at least one of the following over the next hour:
• 20 NIBP cycles
• 30 minutes of SpO
2
monitoring
• 20 predictive temperature determinations
• a single printing of 99 stored data sets
To avoid a shutdown of the monitor due to battery failure, plug in and connect the AC
power adapter.
Battery failure
If the monitor continues to run on battery power after comes on, the battery
eventually fails. Battery failure is indicated by the following:
• flashes continuously.
• A short tone repeats continuously. Pressing does not suppress this tone.
• The message LOW BATTERY is displayed in the message window.
• An error code is displayed in the systolic window (SYS) for 10 seconds, and then
all monitor displays are blanked.
• An error signal—2 short tones—sounds once.
Battery failure causes the immediate suspension of all monitoring and print functions. If
the wall charger is not plugged in, then the monitor shuts off 15 minutes after the battery
discharge reaches failure level. If automatic NIBP is selected, and if the wall charger is
plugged in before the monitor shuts down, then automatic measurement cycles resume
as soon as the battery voltage rises above the failure threshold.
Battery replacement
When the battery has reached end of life, replace it with an identical battery from Welch
Allyn (reorder number 501-0015-XX).
Caution Always recycle batteries according to local regulations. Never dispose
of batteries in waste receptacles.