Mindray WATO EX-55, Service Manual

Page: 29 / 322

2-13
O2 Flush Button Assembly
The above picture shows the O2 flush button assembly. When O2 flush valve 19 is depressed,
O2 rushes into the pneumatic circuit which is cut off when this valve is released. The O2
supply gas at 0.2 MPa after regulated goes through the O2 flush valve, the ACGO assembly,
and into the breathing system. The O2 flush button assemby is not affected by the system
switch. Flushing O2 can be performed as long as O2 supply is normal. The O2 flush valve
has a slide valve structure inside which ensures automatic reset each time the valve is
depressed and released via the spring.
Vaporizer Manifold
The above picture shows the single-vaporizer manifold assembly. The anesthetic gas delivery
device (vaporizer) is connected to the anesthetic gas delivery system. The mixed gas of N2O,
O2 and Air go into the device and the fresh gas containing these three gases and anesthetic
agent is finally outputted to the ACGO assembly. The following figure shows the pneumatic
circuit of anesthetic gas delivery device (vaporizer).