Operating Instructions; Batteries - Respironics 920 Instruction And Service Manual

IV. Operating Instructions
A. Batteries
•
Do not remove any covers other than
CAUTION
the battery cover when battery
replacement is necessary. There are no
user serviceable parts inside other than
the replaceable batteries.
•
Alkaline batteries may leak or explode if
used or disposed of improperly.
•
Do not use different types of batteries at
the same time. In addition, do not mix
fully charged and partially charged cells
at the same time. These actions may
cause the batteries to leak.
The 920 Pulse Oximeter is powered by 6 AA Alkaline cells that will
typically provide 100 hours of continuous operation. The 920
indicates when the batteries are low by flashing the digital
displays once each second. When the displays begin flashing, the
batteries should be replaced as soon as possible. Replace the
batteries by removing the battery door on the bottom of the 920. Be
sure to follow the polarity markings on the rear label of the pulse
oximeter when installing new batteries. Refer to Figure I for an
illustration of battery replacement.
Rechargeable Nickel Cadmium batteries may be used in the 920 if
desired. Since NiCad batteries have less than half the capacity of
alkaline batteries, the batteries will have to be recharged more often
than every 100 hours.
NOTE: Reducing the LED display brightness can extend
battery life up to 100%! Refer to Section V (A. 2.).
NOTE: Replacing batteries erases the clock settings of the
920. The memory of the 920M will also be erased
when the batteries are replaced. These settings
should be reset after the batteries are replaced. To
do this, refer to Section V (A. 3.).
NOTE: Batteries should be removed if the 920 is going to
be stored for more than 30 days. Batteries may
leak if left in the device for a long period of time.
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