Pre-use Test Sequence
When performing a pre-use test, the instructions on the display will guide you through this
sequence:
Step Action
1
Start of pre-use test.
2 Connect the patient circuit.
3
Make sure that nothing is blocking the patient end of the circuit.
4
Wait while the Nippy 4 is checking the patient circuit resistance.
If the resistance is not within the limits, the test will end without per-
forming the following steps. The result will be displayed for review.
5
Block the end of the patient circuit with an air tight object.
6
Wait while the Nippy 4 is checking the patient circuit compliance and
leakage.
7
Test finished. Review the test result.
4.7.1 Actions At Pre-Use Test Failure
At the end of the pre-use test the individual results for leakage, resistance and compliance
are shown.
Failure Due To Incorrect Leakage
Indication: Leakage: Fail
1 Check the ventilator set-up (circuit, filters, humidifier, etc.) for leakage.
2 Ensure that all connectors are tightly fitting.
3 Run the pre-use test again.
4 Replace the circuit if the test is failed repeatedly.
Failure Due To Incorrect Resistance or Compliance
Indication: Resistance: Fail or Compliance: Fail
1 Check the ventilator set-up (circuit, filters, humidifier, etc.) for blockage or pinched
tubing.
2 Run the pre-use test again.
If the pre-use test is continually failed due to resistance or compliance, it is permitted to use
the ventilator but be aware that the pressure (resistance) or volume (compliance) delivered
to the patient may not meet with the specified accuracy.
The ventilator will apply the default values to compensate for circuit resistance and compli-
ance. These values will deviate from the values for the circuit in use.
Ensure that the delivered ventilation is closely monitored.
Preparing the Nippy 4 for Use
41
Doc. 006553 M-6 User Manual
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