Cylinder Yokes (Fixed) And Regulators - Dräger Medical Fabius Tiro Technical & Service Manual

Replacement Procedure
3 Cylinder Yokes
(Fixed) and Regula-
tors
Dräger Medical AG & Co. KGaA
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Replacement of a yoke, check valve, or cylinder regulator requires that the
yoke be removed from the anesthesia machine.
yokes mounting arrangement. Access to the yoke mounting screws and tub-
ing connections is at the underside of the table top at the back of the
machine.
1. Invert unit by performing steps given in section
Disassembly.
WARNING
Ensure cylinder is stored in a safe place and is laid on its side.
2. Remove the two yoke mounting screws.
3. Hold the check valve assembly with a wrench, and carefully turn the yoke
counter-clockwise to remove it.
4. Where applicable, remove the regulator by disconnecting the copper tub-
ing at the HP side of the regulator, and the plastic tubing at the LP side of
the regulator. The regulator assembly, with check valve attached, can
then be removed from the machine.
NOTE
If a yoke is being replaced, verify that the pin indexing arrangement and the
label are in agreement with the gas designation stamped on the mounting
surface of the yoke. Refer to the parts list.
NOTE
Where a regulator is replaced, assemble the fittings and check valve to the
regulator with Loctite #271 (red).
5. Install the regulator assembly in the machine. Hold the check valve
assembly with a wrench and carefully tighten the yoke to the correct hori-
zontal position.
6. Reattach the yoke to the machine with the hardware previously removed.
7. If a new cylinder is being installed, remove the old sealing washer from
the gas inlet of the yoke and install a new washer.
8. Install the correct cylinder on the yoke, making sure that the index pins
are properly engaged before tightening the handle bolt. The cylinder
should hang vertically after the handle is tight.
9. Perform the following leak test on the yoke assembly:
NOTE
The cylinder used for this test must contain the following minimum pres-
sure:
6020.002
Fabius Tiro
Figure 3 shows the cylinder
Core Module Inversion
Revision B Draft
145