1. Filter
2020-03-06
OI01H-2018 SR 100 5
1.5 Fit the filter/combined
filter in the mask so that the
arrows on the filter point
towards the user’s face.
Carefully check that the edge
of the filter is in the internal
groove of the filter mounting
all around.
1.6 Fit pre-filter SR 221 in the
pre-filter holder.
1.7 Press it into place on the
filter.