Mindray A9 Service Manual

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2.3.1 Symbols
Filter Regulator
Pressure gauge Check valve c
Gas supply connector Pressure relief valve
Flowmeter Flow control valve
Pressure switch Flow restrictor
2.3.2 Gas Supply Subsystem
The gas supply subsystem is mainly used to provide fresh gas for the patient and drive gas for the
anesthesia ventilator. It consists of the gas inlet assembly, cylinder yoke assembly, ACGO
assembly, O2 flush assembly, and system switch assembly.
2.3.2.1 Gas Inlet Assembly
The gas inlet assembly provides three gases for the anesthesia machine: O2, N2O, and air. Three
types of gas inlet assemblies are available based on different types of gases: O2 inlet assembly,
N2O inlet assembly, and air inlet assembly. The main configuration difference lies in that the O2
inlet assembly is equipped with a gas supply pressure switch and the O2 and air inlet assemblies
each are equipped with a pressure regulating valve. The following figure shows the pneumatic
diagram of the gas inlet assembly based on different configurations and types:

Mindray A9 Specifications

General

Type	Anesthesia Workstation
Integrated Gas Analysis	Yes
Backup Battery	Yes
Operating Temperature	10°C to 40°C
Storage Temperature	-20°C to 55°C
Battery Type	Lithium-ion
Ventilation Modes	Volume Control, Pressure Control, SIMV, Manual Ventilation
Display	Touchscreen
Patient Monitoring	ECG, SpO2, NIBP, EtCO2, Temperature
Connectivity	Ethernet, USB
Portability	Mobile (with wheels)
Battery Life	Minimum 90 minutes (typical)
Altitude	Up to 3000 meters
Power Supply	100-240 VAC, 50/60 Hz
Charging Time	Approximately 4 hours
Storage	Internal storage for patient data and system logs
Supported Languages	Multiple languages
Certifications	CE, FDA