3 Checkout Procedure
M1207026 3-21
3.11 Breathing system tests
WARNING Objects in the breathing system can stop gas flow to the
patient. This can cause injury or death. Do not use a test
plug that is small enough to fall into the breathing system.
1. Verify that AGSS is operating if equipped. For systems that have
a flow indicator on the side, make sure that the flow indicator
shows a flow in the green (normal) region.
2. Zero the pressure gauge (Section 5.4.1).
Check valves 3. Make sure that the check valves on the breathing circuit module
work correctly:
• The Inspiratory check valve rises during inspiration and falls
at the start of expiration.
• The Expiratory check valve rises during expiration and falls at
the start of inspiration.
Ventilator bellows 4. Ventilator bellows test:
• Set the Bag/Vent switch to Vent.
• Set the system switch to Standby.
• Turn all flow controls fully clockwise (zero flow).
• Use the test plug or your hand to close the breathing circuit at
the patient connection.
• Push the O
2
flush button to fill the bellows.
• The pressure must not increase to more than 15 cm H
2
O on
the pressure gauge.
• If the bellows falls more than 150 mL/min (top of indicator), it
has a leak.
Service Mode Tests 5. Enter the Service Mode: Push and hold the adjustment knob on
the ventilator’s display and set the system switch to On.
• Select and confirm “Service Mode”.
• From the “Diagnostic Test/Tools”, select “Breathing System
Leak Test”.
• Follow the instructions on the screen.
• The leak rate should be less than 200 mL/min.
Bag circuit 6. Test the bag or manual circuit for leaks:
• Set the system switch to On.
• Set the Bag/Vent switch to Bag.
• Plug the bag port (use your hand or the approved test plug).
• Close the APL valve (70 cm H
2
O)
• Set the O
2
flow to 0.25 L/min.
• Close the patient connection (using a hand or the approved
test plug) and pressurize the bag circuit with the O
2
flush
button to approximately 30 cm H
2
O.
• Release the O
2
flush button. The pressure must not
M1207027 004 MANUAL−DOC, Technical Reference Manual, Technical Reference Manual for 9100c, English−default
Reproduced from the electronic master in MATRIX
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