LTV 1200 - Page 46

Page 6-8 LTV
®
1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
6) If leakage exceeds the values noted above, perform the following tests:
High Flow Transducer Test:
• Connect appropriate tube from the test fixture to the High Flow transducer
port on the right side of the ventilator and pinch off other unused tubes.
• Using the test fixture manometer as the pressure measurement instrument,
apply 50 – 55 cm H2O pressure to the ventilator with the syringe.
• Pinch off the pressure supply tube near the syringe to seal the supply of
pressure. Observe any downward change in pressure on the manometer.
Requirement: The change in pressure in 1 minute shall be ≤ 1.0 cmH
2
O
• Record the data on the Calibration Worksheet
• Disconnect the tube from the ventilator port. Open the pinch clamp on the
pressure supply tube.
Low Flow Transducer Test:
• Connect the tube from the test fixture to the Low Flow transducer port on the
right side of the ventilator and pinch off other tubes.
• Using the test fixture manometer as the pressure measurement instrument,
apply 50 – 55 cm H2O pressure to the ventilator with the syringe.
• Pinch off the pressure supply tube near the syringe to seal the supply of
pressure. Observe any downward change in pressure on the manometer.
Requirement: The change in pressure in 1 minute shall be ≤ 1.0 cmH
2
O
• Record the data on the Calibration Worksheet
• Disconnect the tube from the ventilator port. Open the pinch clamps on the
pressure supply tube.
7) If leakage in excess of the required values is observed, troubleshoot leaks (see
Chapter 7 - Troubleshooting). If the leak persists, contact the technical support
department at Pulmonetic Systems using the information at the front of this manual.
NOTE
For best calibration results, allow the ventilator to warm up by running it for at least 20
minutes prior to beginning the calibration procedures.