Penlon AV-S, Service Manual, Page: 55 / 94

5.2.2 Function Test
1. Set the AIRWAY PRESSURE LIMIT
to 50 cmH
2
O.
2. Connection for PRESSURE
TRANSDUCER:
Check that the port on the rear of the
control unit is correctly connected to
the port on the rear of the absorber
assembly (see section 5.1.10).
3. Connect a 2-litre breathing bag to the
patient connection as a test lung.
4. Adult bellows only:
Set the tidal VOLUME to 600 ml;
RATE to 10 bpm, and I:E RATIO to
1:2.0.
5. Use the O2 flush button on the
anaesthetic machine to fill the
bellows.
6. Select VOLUME CYCLE mode.
7. The delivered tidal volume indicated
on the scale printed on the bellows
housing should be approximately 600
ml.
If the delivered tidal volume is less
than 500 ml or greater than 700 ml,
refer the ventilator to a Penlon-trained
engineer.
8. Set a basal flow only on the
anaesthetic machine.
Check the bellows after 10 breaths -
the bellows should return to the top of
the housing.
Failure to return to the top of the
housing indicates a leak in the
breathing circuit.
Rectify the leak before clinical use.
9. Occlude the patient ‘Y’ -piece.
The HIGH AIRWAY
PRESSURE
alarm should be activated.
The peak pressure read on the
breathing system pressure gauge is
the maximum working airway
pressure limit and should agree with
the setting.
49
PRE-OPERATION PROCEDURES
10. Open the patient ‘Y’ -piece to ambient
pressure.
At the second cycle, the LOW
AIRWAY
PRESSURE alarm should
be activated.
11. Select STANDBY mode
Before using the ventilator clinically,
check that all connections are correct,
and verify that there are no leaks.
NOTE
If there is any malfunction, the ventilator must
NOT be used.
If the problem cannot be rectified, the ventilator
must be checked by a Penlon trained engineer.