Mindray WATO EX-55, Service Manual

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5.1 Introduction..................................................................................................................... 5-1
5.2 Technical Alarm Check ................................................................................................... 5-1
5.2.1 Ventilator Related Alarms .................................................................................. 5-1
5.2.2 Electronic Flowmeter Related Alarms ............................................................... 5-9
5.3 Pneumatic Circuit System Problems ..............................................................................5-11
5.3.1 Tools for on-site Maintenance...........................................................................5-11
5.3.2 Gas Supplies and Drive Gas............................................................................. 5-20
5.3.3 Anesthetic Gas Delivery System ...................................................................... 5-28
5.3.4 Patient Circuit................................................................................................... 5-42
5.3.5 Tidal Volume .................................................................................................... 5-57
5.4 Troubleshoot Sensor and Valve Related Failures by Using the Valves-test Tool .......... 5-59
5.4.1 Preparations before Using the Valves-test Tool................................................ 5-59
5.4.2 One-to-one Correspondence between the Sensors & Valves on the Valves-test
Tool Screen and the Components.............................................................................. 5-60
5.4.3 Description ....................................................................................................... 5-61
5.5 Hardware and Electrical Problems................................................................................ 5-66
6 Repair and Disassembly .................................................................................................. 6-1
6.1 Prepare for Disassembly ................................................................................................. 6-2
6.1.1 Tools................................................................................................................... 6-2
6.1.2 Preparations........................................................................................................ 6-2
6.1.3 Bleed Gas Pressure............................................................................................. 6-3
6.2 Disassemble the Assemblies ........................................................................................... 6-3
6.2.1 Remove the Top Panel........................................................................................ 6-3
6.2.2 Remove the Rear Panel ...................................................................................... 6-4
6.2.3 Remove the Trolly Rear Panel Assembly........................................................... 6-5
6.2.4 Replace the System Switch ................................................................................ 6-5
6.2.5 Remove the Left Front Panel Assembly............................................................. 6-7
6.2.6 Remove the Throttling Device ........................................................................... 6-8
6.2.7 Disassemble the Display Assembly.................................................................... 6-9
6.2.8 Remove the Flowmeter Control Board ............................................................ 6-10
6.2.9 Remove the Total Flowmeter ........................................................................... 6-10
6.2.10 Disassemble the Gas Supply Inlet Assembly ..................................................6-11
6.2.11 Remove the ACGO Switch Assembly............................................................ 6-13
6.2.12 Remove the O2 Flush Button Assembly ........................................................ 6-14
6.2.13 Remove the Vaporizer Manifold Assembly.................................................... 6-15
6.2.14 Disassemble the Pipeline Pressure Gauges .................................................... 6-17
6.2.15 Disassemble the Expiratory Valve Assembly ................................................. 6-18
6.2.16 Remove the Three-way Valve ........................................................................ 6-20
6.2.17 Remove the Auxiliary O2 Supply Assembly.................................................. 6-20
6.2.18 Remove the AGSS Assembly......................................................................... 6-21
6.2.19 Remove the Main Control Board ................................................................... 6-23
6.2.20 Remove the Button Board .............................................................................. 6-23
6.2.21 Remove the Monitor Board............................................................................ 6-24