Final Check 9
3.5 Checking inhalation function
MODULE Oyxgen / Combi
1. Connect inhalation outlet to a flowmeter and apply 4.5 bar pressure to the module.
2. Set flow at module to 6 l/min.
Requirement: Reading must not deviate by more than ±0.6 l/min.
3. Set flow at module to 10 l/min.
Requirement: Reading must not deviate by more than ±1.0 l/min.
4. Set flow at module to 15 l/min.
Requirement: Reading must not deviate by more than ±1.5 l/min.
5. Reduce input pressure to 2.7 bar (dynamically, at 80 l/min).
6. Switch on module and fully open pressure regulator.
Requirement: Pressure gauge reading must reach an output of at least 10 l/min.
7. Close pressure regulator and set toggle switch to position “0”.
3.6 Testing vacuum
MODULE Combi/ Suction
1. Screw the pressure supply onto the pressure inlet.
2. Reduce input pressure to 2.7 bar (dynamically, at 80 l/min).
3. Connect vacuum gauge to vacuum outlet.
4. Set toggle switch to vacuum.
Requirement: The vacuum reading must reach at least 0.35 bar.
5. Set inlet pressure to 4.5 bar.
Requirement: The vacuum reading must reach at least 0.55 bar. The device reading must not deviate
from the test gauge reading by more than ±0.05.
6. Connect vacuum connection to Rotameter.
Requirement: The suction performance must be greater than 8 l/min (flowmeter).
MODULE Suction
1. Set toggle switch to position “1”.
2. Set pressure regulator to maximum vacuum.
Requirement: See vacuum testing in section MODULE Combi/Suction.
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