Mopv Pressure Relief Valve Test; Test Setup; Test Procedure - Datex-Ohmeda S/5 Avance Technical Reference Manual

6.3 MOPV pressure relief valve test

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WARNING

6.3.1 Test setup

6.3.2 Test procedure

1009-0357-000 11/03
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.
• Make sure that there are no test plugs or other objects caught in the
breathing system.
1. Remove the ABS breathing system.
2. Plug the inspiratory flow (drive pressure) port of the exhalation valve with a
stopper.
Plug Inspiratory Flow
(Drive Pressure) Port
To test the pressure relief valve, you must establish a flow (blocked by setup
above) of 30 l/min through the Inspiratory Flow Control valve. To adjust the
flow, you must boot the system with the PCMCIA Service Application and
access the Vent Diagnostics function as detailed in Section 8.
1. On the Main Menu of the Service Application, select Vent Diagnostics.
2. On the Vent Diagnostics page, select Gas Inlet Vlv ON/OFF to Open the gas
inlet valve.
Press the ComWheel to return focus to the selection menu.
3. Select Flow Valve Control.
4. Adjust the Flow Valve counts until the Flow Valve Setting at the bottom of
the screen reads approximately 30 l/min.
3. Carefully listen for the MOPV relief weight to be relieving and "popping off"
from its seat (a purring sound). This indicates the valve is functioning
correctly.
4. Set the system switch to Standby.
5. Remove the stopper from the inspiratory flow port.
6. Reassemble the system.
7. Perform the Preoperative Checkout Procedure
(refer to the User's Reference manual).
Exhalation valve
6 Maintenance
6-5