SLE 5000 - Page 174

Page 174
Step 55. Set the following parameters
HFO I:E 1:3
Verify that:
the flow wave form changes in the expiratory flow
phase.
Step 56. Press the
Mode Select
button
and select HFO+CMV
from the Mode Select
panel, but do not
press the Confirm
button. Advance to
Step 57.
Action: If the I:E ratio cannot be changed or
the waveforms do not display correctly then
perform the following actions in the order
suggested below. After each action, retest the
ventilator. If the ventilator successfully
passes all these tests, after performing one of
these actions, go to Step 56.
• Check the patient circuit is set up correctly
as shown in Section 12: Ventilator Set-up.
Pay close attention to proximal airway,
fresh gas connection and the expiratory
limb.
• Check the silencer to ensure it is not
adding exhaust gas resistance due to it
becoming restricted.
• Check the test lung and replace it if
necessary.
• If the fault continues after checking all
possible causes remove the ventilator from
service and contact an SLE approved
engineer.
• Re-calibrate the system
• Check the software version and confirm it
is correct.
If the fault continues after checking all the
possible causes, remove the ventilator from
service and contact an SLE approved
engineer.
HFO I:E ratio of 1:1
HFO I:E ratio of 1:3
Note reduction in
expiratory flow.