LTV 1150 - Page 273

p/n 18603-001, Rev. C LTV
®
1200/1150 Ventilator Service Manual Page 9-17
D) Set Leak Compensation: ON
Press the Sensitivity button and
rotate Set Value knob
• Status monitor displays “-“ (sensitivity
deactivated).
Press and hold the Select button
• Status monitor displays ALARM OP
Rotate the Set Value knob
• Status monitor window displays VENT OP
Press the Select button and rotate
the Set Value knob
• Status monitor window displays LEAK
COMP
Press the Select button and
rotate the
Set Value knob
• Status monitor window displays COMP ON
Press the Select button and press
the Control Lock button (2) times.
E) Create a 4 Lpm leak past the
patient wye and wait for at least (2)
full breath cycles.
Set the Sensitivity value to 2 Lpm.
Observe Patient Effort LED on the
upper right side of the ventilator
control panel for at least 30
seconds.
• The Patient Effort LED should not flash
during and following the sensitivity being set
to 2 Lpm.
• If the Patient Effort LED flashes:
This condition represents a failure of the
sensitivity test.
F) While monitoring the Patient Effort
LED, disconnect the test lung
momentarily during the exhalation
portion of the breath cycle.
• The Patient Effort LED should momentarily
flash and an inspiration should immediately
begin.
• If the Patient Effort LED does not flash
and/or an inspiration is not given immediately
after the momentary disconnection of the test
lung:
This condition represents a failure of the
sensitivity test.
5) Perform a PEEP test.
A) Set the ventilator as follows:
Tidal Volume: 500
Breath Rate: 10
Inspiration Time: 1.0
Control Mode: Volume
PEEP: 0
• Measured PEEP must be 0 ± 1 cmH2O.
• Displayed PEEP must be 0 ± 1 cmH2O.
B) Set the PEEP to 20
• Measured PEEP must be 20 ± 2 cmH2O.
• Displayed PEEP must be 20 ± 2 cmH2O.
C) Set the PEEP to 5
• Measured PEEP must be 5 ± 1 cmH2O.
• Displayed PEEP must be 5 ± 1 cmH2O.