Welch Allyn PROPAQ CS Service Manual page 38

34 Functional verification
Mainstream CO
2
This procedure verifies the accuracy of the monitor's mainstream CO
system. If verification test results exceed specification limits, calibration
(MCO2) calibration"
possible sources of errors in testing as listed in the table below.
1. Connect an MCO
2. Turn on the monitor. Press SILENCE/RESET
or ALARM SUSPEND/RESUME (all other software versions) to disable the alarms.
3. Press SETUP > MORE > MORE > SERVICE > YES > MORE > MORE > SETTINGS
and then set the CO
4. Allow the monitor and sensor to warm up for at least 15 minutes.
Note
5. After 15 minutes, verify that the CO
display is 1 mmHg, ±1 mmHg.
6. Install a rubber stopper in each end of the sensor airway adapter. (Refer to
equipment"
7 . Connect the CO
adapter. Leave the other end open.
Note
8. Introduce a flow of test CO
adapter.
9. For test gas calculated partial pressure values of 30 mmHg or less, check the CO
reading on the monitor display to be within 3 mmHg.
10. For test gas calculated partial pressure values greater than 30 mmHg, check the CO
reading on the monitor display to be within ±10% of the partial pressure value.
Note
11. Disconnect the test gas source and other test equipment.
12. Disconnect the CO
13. Turn off the monitor.
14. Log the test date and results in your department log.
verification procedure
on page 54) MAY or MAY NOT be required—there are multiple
sensor with airway adapter to the monitor MCO
2
measurement units to millimeters of mercury (mmHg).
2
Possible errors may be caused if the area has high background CO
CO has been forced outside of the airway adapter and into the sensor itself. To
2
reduce the background CO
preferably, the technician should be the only person present. If CO
forced into the sensor, allow 24 to 48 hours for the CO
on page 14.)
gas source through the hole in the stopper on one end of the airway
2
Before performing the following steps, convert the percentage of the gas source
to partial pressure (mmHg) according to the procedures in Mainstream
verification preparation"
2
If CO test results are out of specification limits, check the table below for
2
possible error sources. Always verify the test setup to minimize errors.
sensor from the monitor.
2
(software version 3.6x and greater)
level, the area should be well ventilated and,
2
reading (of ambient room air) on the monitor
2
on page 30.
at a rate of 60 to 200 ml/min into the sensor airway
Welch Allyn Propaq CS Vital Signs Monitor
(MCO ) measuring
2 2
("MSP Board
input connector.
2
levels or if
2
has been
2
to dissipate.
2
"Required
"CO2
2
2