Fresh Gas Flow Meter - Dräger Medical Fabius Tiro Technical & Service Manual

Replacement Procedure
16 Fresh Gas Flow
Meter
Dräger Medical AG & Co. KGaA
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Access to the fresh gas flow meter requires removal of the
Assembly. Figure 22 shows the tubing and mounting arrangement for the
fresh gas flow tube. For clarity, other sub-assemblies are not shown in the
illustration.
NOTE
If the Core Unit is wall mounted, refer to the
Procedure prior to performing the following step.
1. Disconnect all pipeline hoses and set the System Power switch to 'ON'.
2. Close all cylinder valves except the O2 valve.
3. Set the oxygen flow to 5 l/min.
4. Open the other gas flow control valves to deplete the pressure from the
system.
5. Close the O2 cylinder valve and close the flow control valves. Press the
O2 Flush valve to deplete oxygen pressure from the system.
6. Set the System Power switch to 'OFF' and disconnect AC power from the
machine.
7. Detach the cylinder supply from the yoke.
8. Remove the screws securing the bezel assembly (refer to the
Bezel Assembly instructions) and bring the assembly forward for access
to the fresh gas flow meter.
9. Disconnect the tubing from the flow tube ports and remove the Luer fit-
tings.
10. Remove the flow tube mounting nuts to release the flow tube.
11. Install the replacement flow tube with the mounting brackets and nuts
supplied. Ensure that the float moves freely without sticking, and that the
flow tube is oriented properly.
12. Reinstall the Luer fittings and reconnect the tubing
13. Reinstall the flow meter bezel assembly in the machine (refer to the Flow
Meter Bezel Assembly instructions).
14. Reconnect the pipeline and cylinder supplies and restore power to the
machine.
15. Perform the PMS procedure.
6020.002
Fabius Tiro
Flow Meter Bezel
Wall Mount Service Access
Revision B Released
Flow Meter
187