Puritan Bennett 840 Expiratory Filter Replacement

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Check to see if your ventilator uses a dran bag.
If your ventilator uses a drain bag, attach the drain bag to the collector vial as shown, which is placed underneath the expiratory filter system.
If a drain bag is not used, make sure to cap the bottom outlet of the collector vial.
This step is crucial as it allows the user to proceed with an expiratory filter test described in the conclusion. Ensure that the drain bag, if applicable, is attached fully.

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