Welch Allyn Atlas Service Manual

Section 2 - Service
8 WELCH ALLYN ATLAS MONITOR
SERVICE MANUAL 6200-43E REV. A
2.3.2.4 Remove water trap from water trap socket .
2.3.2.5 Message “Install scrubber” will appear .
2.3.2.6 Attach scrubber to water trap.
2.3.2.7 Insert scrubber/water trap assembly into water
trap socket.
Message “Enter span gas value using
<Set> button” will appear.
2.3.2.8 Change the default value (10%) to the value of
span gas being used (calibrated 8% to 12%
concentration known to ±0.01%).
2.3.2.9 Press <BP Start/Cancel>
Message: “Sampling” appears while the
instrument is sampling the scrubber air.
2.3.2.10 When instructed, remove the scrubber from
the CO
2
water trap. Do not remove water trap.
2.3.2.11 Attach the calibrated source of CO
2
gas
to the CO
2
side-stream sampling tube as per
Figure 2.3.2.11
2.3.2.12 Adjust the CO
2
regulator just enough to
allow a small amount of gas to flow out of the
vent (approximately 3 PSI).
Important: Once positive flow is
established, let the it flow for one minute
before pressing the Continue button and
actually sampling.
After one minute, press the Continue
button to let the Atlas start sampling CO
2.
.
2.3.2.13 Press <BP Start/Cancel>
Message: “CO
2
calibration successful” or
“CO
2
calibration failed” will appear on
the CRT display.
(Note: Serial Communication is not the cause of a failure
if the Prion Serial appears in the Service Screen.
Therefore the problem is with the board or connections
and not serial communication problems.)
2.3.2.14 Press Trend button to Exit.
To calibrate the CO
2
system in years 2022 or later it is
necessary to reset the system clock to an earlier year,
perform the calibration, and then set the clock to the
correct year again. The service center should keep a
record of this since the Cal display in the Service Mode
screen will be incorrect.
CO
2
watertrap
vent
Figure 2.3.2.11
Note
: Adjust regulator to
approximately 2 PSI.
valve
NOTE:Replace water trap
every 6 hrs of use. Treat
water trap and used
NasalCO2 Sample lines
as bio hazard material!
SR856: CO
2
Calibration
beyond the year 2021

Welch Allyn Atlas Specifications

General

Brand	Welch Allyn
Model	Atlas
Category	Medical Equipment
Language	English