9-3
9.1.3 Release Pressure
Make sure to bleed down the gas pressure inside the anesthesia machine before disassembling
pneumatic fittings to avoid personal injury or equipment damage. To bleed gas pressure:
1. Close other cylinder valves and disconnect pipeline gas supplies. Do not disconnect the
O2 pipeline. If O2 pipeline is not available, connect O2 cylinder and open the O2
cylinder valve.
2. Set the system switch to ON.
3. Turn on all the flow controls (except O2).
4. Make sure that N2O and AIR pipeline pressure gauges read zero.
5. Disconnect the O2 pipeline supply (or close the O2 cylinder valve). Push the O2 flush
button to bleed O2 from the system.
6. Set the system switch to OFF.
9.2 Disassemble Assemblies
9.2.1 Remove Top Cover Assembly and Top Plate Assembly
1. Fully loosen the three (3) screws fixing the top cover assembly from the rear side and
two side edges of the machine, and remove the assembly by pushing it toward the front
of the machine.
2. Unscrew the eleven (11) combined screws and five (5) socket head cap screws to
remove the top plate.
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