p/n 18603-001, Rev. C LTV
®
1200/1150 Ventilator Service Manual Page 2-9
6) To perform the leak test, the ventilator does the following:
a) Closes the exhalation valve and sets the flow valve to a near-closed state. The
display briefly shows HOMING VALVE.
b) Elevates the turbine motor speed. The display shows SET TURBINE.
c) Elevates the circuit pressure. The display shows PRES xx.x cmH
2
O where xx.x is
the real-time airway pressure.
d) Sets the flow valve to a near closed position. The display shows FLOW xx.x Lpm
where xx.x is the flow through the flow valve.
e) After several seconds, the display shows
LEAK xx.xx PASS or LEAK xx.xx FAIL
indicating the leak test results.
7) The leak test will fail if the flow through the flow valve is ≥1.0 Lpm.
NOTE
The leak test may be performed without occluding the patient circuit to confirm a failing
response.
8) To exit the leak test, press Select again. The next menu item is displayed.
If the ventilator fails the leak test, see Chapter 7 - Troubleshooting for more information.
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