9 Anesthetic Gas Module
Total Flowrate Check and Adjustment in Purge Mode
To make the flowrate measurements and any necessary adjustment:
Enter the service mode of the monitor and let the Philips M1026A Anesthetic Gas Module
complete the warm-up phase (the
Connect a flowmeter to the exhaust port of the Philips M1026A Anesthetic Gas Module.
Note the actual flowrate by following the instructions accompanying the flowmeter. If the actual
flowrate is outside the tolerance, it must be adjusted. If no adjustments are required, select Stop
Flow Cal .
Total Flowrate in Purge Mode
Remove the Philips M1026A Anesthetic Gas Module top cover (see "The Top Cover" on
Correct the flowrate by adjusting potentiometer
value is achieved.
10 If you have made adjustments you must save the settings. Therefore select Store Flow Cal and
confirm when prompted.
The system then runs through various flowrates and switches the pump off before it saves the
The flow display in the Calibration window reflects these changes and the status "Flow Cal
11 Disconnect the flowmeter from the exhaust port.
Measurement Path Flowrate Check and Adjustment
The flowrate of the measurement path is checked using a test fixture in the form of a modified
watertrap. In order to perform the flow rate check, the following equipment is required:
• Flow Split Test Tool M1026-60136
• Electronic Flowmeter M1026-60144
Check that the test fixture is still valid for use. It must be less than two years old. The test fixture is
N O TE
labelled with a "Received" date that needs to be filled in when the test fixture is received.
The flow value that is labelled on the test fixture is to be used to perform the measurement path
flowrate check. It is only valid for this test fixture.
Check the test fixture visually for leaks. Regularly perform a leakage check with the test fixture
attached instead of the watertrap. Block both lines (drainage and measurement) at the same time
Setup Gas Analyzer
Gas Analyzer Calibration
Setup Gas Analyzer
for purge flow (310 ml/min).
Checking and Calibrating the Anesthetic Gas Module
menu and select
Start Flow Cal
+/- 15 ml/min
on the Main PC board until the required