Mindray A8 Service Manual

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Figure 29 Structural diagram of the auto/manual switch assembly
2.3.5.4 Auto/Manual Drive Valve Assembly
The auto/manual drive valve assembly controls gas supply through a pilot three-way valve, as
shown in the figure below. When the three-way valve is powered on, the pressure acts on the left
end face of the piston, and the piston ejects against the spring force, to push the auto/manual
valve cartridge in the patient circuit assembly to the auto state. When the three-way valve is
powered off, no pressure acts on the left side of the piston, and the piston retracts under the
spring force. In this case, the auto/manual valve cartridge moves to the left under the spring force,
to switch to the manual state. The structural diagram of the auto/manual drive valve assembly is
shown below.
Figure 30 Structural diagram of the auto/manual drive valve assembly

Mindray A8 Specifications

General

Brand	Mindray
Model	A8
Category	Medical Equipment
Language	English