Mindray WATO EX-55, Service Manual

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4-9
13. Flow sensor calibration (refer to 4.3.2).
14. O2 sensor calibration (refer to 4.3.7).
15. Airway pressure gauge zeroing (refer to4.5).
16. APL valve accuracy adjustment (refer to 4.6).
17. Low pressure leak test (refer to steps 1 through 8 of “4.Leak test of all pipelines on the
circuit adapter” in
5.3.4.2
Leak Test of Low-pressure Pneumatic Circuit System).
4.1.2 Three-year Replaceable Parts
List of three-year service package (0621-30-78480):
SN P/N Description Qty
1 M05-010001-06 Lithium battery Li-ion 11.1V4400mAh LI23S001A 1
2 M05-010R03--- Cell battery Lithium 3V35mAh D12.5*2.0 1
4.2 System Test
Before the anesthesia machine at the client end is maintained, some routine tests are required
to check if the current status of the anesthesia machine is normal. The following table lists the
routine tests.
SN Test item Functional description Test interval
1
Check the
mechanical
ventilation
mode
1. Check if mechanical ventilation is provided normally
and if an alarm occurs.
2. Check if the preset values of pressure and TV are same
to the measured values.
3. Check if the pressure measured by the pressure sensor is
same to that indicated by the airway pressure gauge and if
the TV measured by the flow sensor is same to that
indicated by the graduation on the bellows housing.
4. Roughly judge if the breathing system has a significant
leak by observing how much fresh gas is compensatedt and
observing if the folding bag collapses.
After each
service or at
the time of
return visit
2
Breathing
system leak
test in
mechanical
ventilation
mode
1. Check the pneumatic circuit in mechanical ventilation
mode for leaks, including bellows, drive gas circuit,
sodalime canister, patient tubes, flow sensors and their
connectors.
2. Check the control effectiveness of main control board
and auxiliary control board over PEEP safety valve.
3. Check the monitoring effectiveness of auxiliary control
module over airway pressure and PEEP path pressure.
After each
service or at
the time of
return visit