TESTO 380 - Checking;replacing the crude gas primary filter

7 Maintaining the product
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3. Attach the filter cover and lock by turning it clockwise. The cross
strut of the filter cover must be parallel to the orange handle of
the condensate container.
7.5. Checking/replacing the crude gas primary
filter
Checking the primary filter:
> Check the primary filter regularly for contamination. In the event
of visible contamination: change the filter.
Replacing the primary filter:
The filter chamber may contain condensate.
1. Remove crude gas tube from the cotton filter connector, unlock
the condensate container by the orange handle and the cotton
filter.
2. Remove condensate container horizontally from the testo 380.
3. Unscrew the cotton filter (anti-clockwise) and remove.
4. Remove the primary filter from the cotton filter.