Part No. 715-0088, Rev. B
- 88 -
9.
NO or NO
2
values drift while instrument is in use.
Possible solutions:
1.
See possible solutions for NO or NO
2
very slow to respond
(Symptom #5).
2.
Check wiring harness and connectors that connect the
sensors to the circuit boards for loose wires or intermittent
connections.
3.
Incomplete gas mixing may be occurring in the patient circuit.
Refer to Operators Manual for proper connections and
minimum mixing length from delivery site to sample site on
ventilator circuit.
10.
NO
2
value displayed is HI and does not change.
Possible solutions:
1.
NO
2
sensor has been exposed to gas concentrations in
excess of 10 ppm. Flush the system with room air or oxygen
for a period of time until the value returns to zero.
2.
NO
2
sensor has been damaged by overexposure. Replace
the sensor.
11.
NO sensor value will not return to zero.
Possible solutions:
1.
Perform Low and High Calibration.
2.
NO sensor has been exposed to concentrations of NO > 100
ppm. Flush system with room air or oxygen until value
returns to zero. Exposure to high concentrations of gas will
shorten sensor life.
12.
HI or LO displayed continuously on one of the displays.
Possible solutions:
1.
Sensors have drifted above max limit or below zero.
Recalibrate per the Operators Manual.
2.
Sensors are not biased. Make sure internal battery was
connected and charged for at least 48 hours prior to use.
3.
Sensors are old. Check PM schedule.
4.
Enter calibration mode for numeric display of actual values to
aid troubleshooting. Operating mode masks numeric values
outside of the useable range.
13.
SAMPLE BLOCKED displayed immediately when turned on.
Possible solutions:
1.
Sample line, hydrophobic filter, or Nafion line has plugged off.
Disconnect filter and lines from instrument and try again. If it
operates correctly, check lines and filter for plugging,
reconnect, and try unit again.
Содержание AeroNO 2.0
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