Sundstrom SR 900 User manual

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Operating Instruction
SR 900 Half mask

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General information
Together with filters from the Sundström filter range in accordance
with EN 140:1998. Three sizes S, M and L.
Together with compressed air attachment SR 307, SR 507 and SR
358, SR 359 or SR 360 in accordance with EN 14594:2005, 3A
Together with powered air unit SR 500 or SR 700 in accordance
with EN 12942:1998
Together with Remote filter holder SR 905 according to EN 12083.
When selecting equipment for SR 900 some of the factors that
should be taken into account are as follows:
•Type of pollutant
•Concentrations
•Work intensity
•Protection requirements in addition to respiratory protective advice.
Risk analysis should be carried by a person who has suitable
training and experience in the area.
Instructions for use for SR 900 should be read before use.

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Unpacking SR 900
Packing list
Check that the equipment is complete in
accordance with the packing list, and
that no transport damages have
occurred.
Packing list:
•Half mask
•Filter holder
•Pre-filter holder
•Pre-filter
•Cleaning tissue
•ID-tag
•User instructions
•Storage bag
Combination filters
During work in atmospheres containing
both particles and gases (such as spray
painting) the particle filters and gas filter
should be combined.

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Press the filters together so that the
arrows on the particle filter point towards
the gas filter.
Pre-filter
Pre-filter prevents premature clogging of
the main filter. The pre-filter holder
prevents damage to the main filter.
N.B.The pre-filter is a pre-filter only, and
cannot be used as a substitute for
particle filter P3 R.
To fit the filter in a mask
Check that you have selected the right
filter and that the use-by-date has not
been passed.

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Fit the filter/combined filter in the mask
so that the arrows on the filter points
towards the user’s face.
Carefully check that the edge of the filter
is in the internal groove of the filter
mounting all round.
Fit pre-filter SR 221 in the pre-filter
holder and press it into place on the
filter.
Fitting
Adjust the head harness so that the
mask fits snugly and comfortably. It is
important that the bands are placed
according to the picture. Any other
method will result in inadequate seal and
less comfort.
Place the palm of your hand lightly over
the hole in on the pre-filter holder.

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Breathe in deeply and hold your breath.
If the seal is good, the mask will press
against your face.
Inadequate fit may be caused by beard
growth, stubble. Deep facial furrows or
unusual face size.
Leakage may also occur if the exhalation
membranes are soiled or defective.
Cleaning
Daily maintenance
Remove the filter and the membranes.
Clean the mask with the Sundström
antibacterial cleaning tissue SR 5226.
Check and replace worn or damaged
parts. Pay special attention to the
exhalation membranes. Making sure that
they are clean and intact is as important
as regular filter replacement.

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Detach the filter holder from the mask by
turning it a ¼ of a lap.
If gasket is in need of change.
Release the gasket from the attachment
on the filter holder.
Mount the new gasket. Attach the filter
holder by turning it a ¼ of a lap.
Detach the head harness.
Detach the filter holder from the mask by
turning it a ¼ of a lap.

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Use soft brush and clean with soapy
water. Rinse and air dry.
Warning! Never use solvents for
cleaning.
Storage
The best way to store the mask, clean
and dry is in the Sundström storage box
SR 230 or storage bag SR 339.

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