The CYPRES Filter only needs to be replaced after water contact.
Together with the sealing of the unit itself, the CYPRES Filter provides waterproofness for up to 24 hours at a water depth of 2,5 meters. Replacement of the Filter can be done in the field. Please use only the CYPRES Filter Changer to unscrew the filter from the housing and to screw in the new filter.
Airtec article number: 900004
For further details and filter change please see the CYPRES 2 user’s guide.