Mindray A7 Service Manual

A7™ Service Manual 046-006272-00 3 - 3
Periodic Maintenance Checklist before surgery
3.4 Checklist before surgery
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
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
8
Check the
AG module
a
ccuracy
1. Check if the measurement made by the AG module is
normal.
2. Check the effectiveness of AG module calibration
result.
After each
service or at
the time of return
visit

Mindray A7 Specifications

General

Brand	Mindray
Model	A7
Category	Medical Equipment
Language	English