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8 Cleaning and Maintaining the Atlas Monitor
No harsh chemicals should be used for cleaning the monitor. A mild detergent solution works well. Care
should be taken to keep liquids away from the monitor and its connecting parts. Servicing should be
performed by a qualified technician at 6, 12, and 24-month intervals.
Cleaning – The Welch Allyn Atlas Monitor may
be wiped clean with a slightly damp cloth and a
mild detergent solution. Never immerse the
monitor in any type of liquid. As necessary, the
monitor may be cleaned with an appropriately
diluted, non-staining disinfectant solution.
Warning: Take care that no water or other
liquids enters any of the connectors. If this
should occur, dry them with warm air. Then
check all the monitoring functions to be sure
everything works properly.
Blood pressure cuff – The blood pressure cuff
should be cleaned by sponging with a damp
cloth.
Connections – Cables and hoses can be wiped
with a damp cloth and mild detergent. Do not
immerse the hoses or the cables.
Fingerclip sensor – The reusable SpO
2
fingerclip sensor may be cleaned with isopropyl
alcohol and may be sterilized with ethylene
oxide (EtO), cold cycle. Do not immerse the
sensor.
Temperature sensors – The temperature probes
and probe covers should be handled as biohazard
material after use and must be sterilized.
ETCO
2
watertrap – The watertrap should be
replaced after six (6) hours of use. The watertrap
should be replaced in accordance with the
institution’s infection control policies for
disposables. If the watertrap is full, an alarm will
sound and a message reading “Replace CO
2
watertrap” will appear on the screen. The
message “CO
2
watertrap occluded” may also
appear. If this happens, change the watertrap
The watertrap should be handled as a biohazard
after use.
CO
2
Reset - The monitor keeps track of when
the CO
2
subsystem was last reset. If the monitor
has been unused for a long time, is just being set
up, or if it has been more than one month since
its last reset, you may see a message on the
screen indicating that a CO
2
Reset is
recommended.
To perform a CO
2
Reset:
• Press the
Date/Time button on the lower
right of the monitor.
• The Set Date and Time and Other Options
menu will be displayed.
• Select the Reset CO
2
selection by pressing
the
CO
2
/RESP ALARMS Off button.
• This will access a screen titled CO
2
Reset.
• Follow the instructions on the screen.
• You will be told to remove the CO
2
watertrap
• You will be told to install the CO
2
Scrubber into the CO
2
watertrap socket.
The Scrubber looks similar to a
watertrap, but is filled with white
granules. It is included with model
623xx. The Scrubber must be attached to
the watertrap. Remove the tubing from
the watertrap and attach the Scrubber to
the watertrap. Insert the
watertrap/Scrubber combination into the
watertrap socket.
• There may be a message indicating a 5
minute Warming Up period.