Datex-Ohmeda Anesthesia Delivery Unit S/5, Technical Reference Manual

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Maintenance
Document No. 8502852
5-51
Step 24: Delivered tidal volume
Equipment needed: Calibrated test device
Test resistance, 535335100
Settings: Manual mode
Pipeline supplies gases connected
Test range: 0-1500 ml
Figure 55 Delivered tidal volume test setup
Figure 56 Test resistence Test device
This test procedure is written for a flow-based test device, meaning that the inspiration flow from the
ventilator is leaving the test device on its outlet port to the atmosphere. A test resistance (hole
between 4 - 6 mm.) is also needed to avoid unnecessary triggering of the ‘Fill bellows alarm’ during
the testing.
1.
Push the
System check
button and select Auto ventilation . Confirm by pushing the
ComWheel
and carry out the check. Make sure that this check passes before proceeding to
the next step.
2. Turn to the manual mode, remove the bellows and refit the bellows chamber to the bellows
block.
3. Connect the test resistance to the flow measurement test device inlet port and select O
2
or Air
on the test device depending on if the Ventilator is O
2
or Air driven (this can be checked in the
Setup Install menu on ADU).