Vyaire VELA, Service Manual

Page: 69 / 111

8-2
Chapter 8: Troubleshooting/Codes/Messages
33373-001 Version A
8.2 Delivered Volumes Test Troubleshooting
Problem Possible Cause Action
Delivered volumes are out of the 10%
specification.
1. Altitude setting is not accurate for
location.
2. Transducer has drifted over time.
3. Turbine filters are dirty.
4. Turbine characterization is no longer
valid.
1. Check altitude setting and adjust to
current location.
2. Recalibrate the Turbine Differential
and Exhalation Pressure Transducer.
3. Check the Turbine filters and replace if
necessary P/N 10365.
4. Remove turbine and return to Vyaire
Service Center for Re-
characterization, or replace Turbine
P/N 16349.
8.3 Monitored Volume Test Troubleshooting
Problem Possible Cause Action
Monitored volumes are out of the 20%
specification.
1. Altitude setting is not accurate for
location.
2. Patient Circuit leaks.
3. Flow Sensor is inaccurate
4. Flow Sensor receptacle is leaking.
5. Flow Sensor receptacle internal tubing
is kinked or damaged.
6. Exhalation Flow Transducer has
drifted over time.
1. Check altitude setting and adjust to
current location.
2. Correct leaking Patient circuit.
3. Replace Flow Sensor.
4. Sensor receptacle o-rings may be
damaged, inspect and replace as
needed P/N 30025.
5. Inspect and correct tube routing or
kinks causing restricted flow.
6. Re-calibrate Exhalation Flow
Transducer.
8.4 FiO2 Performance Test Troubleshooting
Problem Possible Cause Action
FiO2 Monitor window only reads * * * and
will not monitor O2%
1. The FiO2 Monitor is not "Enabled”
2. O2 cell has drifted out of cal range.
3. The O2 cell is faulty. 1. Enable FiO2 monitor in Vent setup
screen. See chapter 6
2. Re-calibrate FiO2 monitor see Chapter
6
3. Replace O2 cell P/N 16101
“Check O2 Cal” alarm occurs after 5
minutes of operation
1. O2 cell has drifted out of cal range.
2. The O2 cell is faulty.
3. The delivered Oxygen Blender O2
output is 6% out of range.
1. Re-calibrate FiO2 monitor see Chapter
6
2. Replace O2 cell P/N 16101
3. Re-calibrate the O2 blender.
“O2 Range Error” alarm occurs after 5
minutes of operation.
1. The delivered Oxygen Blender O2
output is 8% out of range.
1. Re-calibrate the O2 blender.