6-17
mechanical
ventilation
mode
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.
return visit
3
Breathing
system leak
test in
manual
ventilation
mode
Check the pneumatic circuit in manual ventilation mode
for leaks, including APL valve, check valve, sodalime
canister, patient tubes, flow sensors and their
connectors.
After each
service or at
the time of
return visit
4
Check the
sensors’ zero
points
Check if the zero points of all the flow sensors and
pressure sensors inside the machine are within the
normal range so as to determine when to replace the
monitor board.
After each
service or at
the time of
return visit
5
Check the
flow sensor
accuracy
1. Check if the measurements made by the flow sensors
inside the machine are the same.
2. Check if the measurement made by any flow sensor
inside the machine is accurate.
3. Check the effectiveness of flow calibration (factory)
result.
After each
service or at
the time of
return visit
6
Check the
pressure
sensor
accuracy
1. Check if the measurements made by the pressure
sensors inside the machine are the same.
2. Check if the measurement made by any pressure
sensor inside the machine is accurate.
3. Check the effectiveness of pressure calibration
(factory) result.
After each
service or at
the time of
return visit
7
Check the
electronic
flowmeter
accuracy
1. Check if the measurement made by the electronic
flowmeter is normal.
2. Check the effectiveness of electronic flowmeter
calibration result.
After each
service or at
the time of
return visit
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