Mindray WATO EX-55Pro, Service Manual

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2.2.5.6 Anesthesia Calculation Module (If Available)
Anesthesia calculation module (44, AG module), collecting the sample gas from patient, monitors
and calculates anesthesia concentration and CO2 concentration. When the anesthesia
concentration or CO2 concentration of the patient end is too high, an alarm will be triggered.
2.2.6 Pneumatically-Controlled Module of Anesthetic
Ventilator
The pneumatically-controlled module of the anesthetic ventilator provides drive gas for the patient
to breathe. O2 (or AIR) from the gas supply inlet assembly enters the anesthetic ventilator and is
output in three pathways: drive gas entering the breathing system, drive gas discharged through
the AGSS outlet, and drive gas discharged through the PEEP outlet. The ventilator controls drive
gas flow to implement various ventilation modes and prevent excessively high pressure inside the
pneumatic circuit from injuring the patient. The following figure shows the gas flow and
components.
18. Expiratory
valve
Drive gas
inlet port
Exhaust port
PEEP
outlet port
Drive gas
outlet
AG module
installation
position
11. Solenoid
proportional
valve
19. Pneumatic
resistor
16.Pressure
switch
17. PEEP valve
51. Pressure relief
valve (10 cmH
2
O)
15.PEEP
safety valve
12. Differential manometer
13.11kPa
Pressure relief
valve
10. Regulator