Covidien Nellcor GR101704, Service Manual

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Product Setup
Service Manual 5-5
5.3.4
Battery Charge

WARNING:
Charge only with specified charger, according to instructions. Do not heat
above 80 ºC. Do not open battery, dispose of in fire, or short circuit. It may
ignite, explode, leak, or get hot, causing personal injury.

Caution:
To fully recharge a low or fully-depleted battery, connect the monitoring
system to an AC power outlet. Charge the battery for at least eight hours with
the monitoring system turned off or twelve hours with the monitoring
system turned on. Have a qualified service technician periodically check the
battery; if fewer than four bars light after fully charging the battery, the
technician should replace the battery. Recharge the battery at least every
three months, allowing the full charge time if it is the first recharge in several
weeks.

Note:
Whenever the monitoring system is connected to AC power, the battery is charging.
Excessive temperatures will cause battery cell failure. Continued excessive tem-
peratures may trigger the thermal fuse, which permanently shuts down the
battery. Should this occur, replace the battery pack.
To fully charge the battery
1.
Connect the monitoring system to AC power. The monitoring system will not
power up without connection to AC power when the battery charge is below 4%.
2.
Verify the monitoring system is off and the AC Power/Battery Charging indicator
lights. On AC power up, check the battery fuel gauge. If the gauge is empty or
only partially full, the battery begins charging. The monitoring system operates on
AC power while the battery is charging. When the monitoring system is fully
charged, the green battery fuel gauge registers 100%. Note that when the mon-
itoring system is connected to AC, a lightning bolt appears in the battery fuel
gauge.
3.
Until the battery recharges, the monitoring system displays the message, BATTERY
CRITICALLY LOW and supplies the additional information: THE MONITOR’S
BATTERY IS CRITICALLY LOW. THE MONITOR MAY SHUT DOWN IF AC POWER IS
LOST. DO NOT DISCONNECT MONITOR FROM AC POWER SOURCE. If AC power
is lost before the battery is charged past the critically low state, the monitoring