Cylinder Pressure Gauges - Dräger Medical Fabius Tiro Technical & Service Manual

Replacement Procedure
4 Cylinder Pressure
Gauges
Dräger Medical AG & Co. KGaA
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Each pressure gauge is secured by two 6-32 kep nuts, as shown in
Access to gauge mounting nuts and tubing connections is at the underside of
the machine.
1. Invert unit by performing steps given in section
Disassembly.
WARNING
Ensure cylinder is stored in a safe and is laid on its side.
2. Disconnect the tubing at the back of the gauge.
3. Remove the two nuts that secure the gauge mounting plate to the Core
Unit, then remove bracket and gauge(s).
4. Remove the two kep nuts securing the gauge to its mounting plate.
5. Install the replacement gauge(s) in their proper location. Reinstall the
bracket and hardware previously removed, ensuring the gauges are
straight.
6. Reconnect the tubing.
7. Reinstall the cylinders.
8. Perform the following leak test:
NOTE
The cylinder used for this test must contain the following minimum pres-
sure:
a) Open the cylinder valve and check for a pressure indication on the
corresponding gauge.
– O2: 1000 Psi
– N2O : 700 Psi
b) Close the cylinder valve and remove the cylinder from the yoke.
c) For any gas, the pressure should not drop more than 50 psi in two
minutes.
9. Invert unit into its upright position by performing steps given in section
Core Module Inversion
10. Perform the PMS Procedure.
6020.002
Core Module Inversion
Reassembly.
Revision B Released
Fabius Tiro
Figure 4.
149