30
• Let the mask hang on your chest.
• Grab the pad with one hand and the filter
with the other.
• Hold the mask against your face.
• Pull the pad over your head and place it on
the crown of the head.
3.4 Adjusting the harness
• Reach behind your neck and grab the free
end of the harness strap.
• Pull the free end away from the neck until
buckle pops open.
• Pull on the free end of the strap until the
respirator seats comfortably on your face.
• Use your thumb and forefinger to squeeze
the buckle shut.
• Wiggle the respirator until it seats comfort
-
ably.
3.5 Fit check
Use the airtight test disc SR 322 supplied to
check whether the mask is tight.
• Place the disc in the pre-filter holder and fit
the holder to the filter.
• Put the mask on.
• Take a deep breath and hold your breath for
about 10 s.
If the mask is tight, it will be pressed against
your face.
The test disc is intended for use only for
facial fit testing under test conditions. It
must not be used under real work conditions.
3.6 Taking the mask off
Do not take off the mask until clear of the
hazardous area
• Grasp the filter with one hand and the head
pad with the other. Pull it forward over your
head.
• Pull down the respirator until it rests on your
chest.
• Reach behind your neck, grab the strap
buckle and pull the head harness forward
over your head and remove the mask.
• Clean and store the mask as required.
4. Maintenance
4.1 Cleaning
Sundström cleaning tissues SR 5226 which
clean and disinfect are recommended for daily
care. If the mask is heavily soiled, use a warm (up
to +40 °C), mild soap solution and a soft brush,
followed by rinsing with clean water and drying
in air at room temperature. Proceed as follows:
• Remove the filter, the covers for the ex
-
halation valves and the membranes, the
inhalation membrane and the head harness.
(Optional – The harness can be washed, but
takes extra time to dry.)
• Clean as described above. Critical areas
are the exhalation membranes and the
membrane seats which must have clean
and undamaged contact surfaces.
• Inspect all parts and replace with new parts
as necessary.
Leave the mask to dry, and then assemble it.
N.B. Never use solvents for cleaning.
4.2 Storage
The best way to store the mask, clean and dry,
is in the Sundstrom storage box SR 230 or
storage bag SR 339. Keep it away from direct
sunlight or other sources of heat.
4.3 Maintenance schedule
The schedule below shows the minimum
requirements on maintenance routines, so
that you will be certain that the equipment will
always be in usable condition.
4.4 Spare parts
Use only genuine Sundström parts. Don’t
modify the equipment. The use of ’pirate parts’
or any modifications may reduce the protective
function and will compromise the approvals
granted to the product.
4.4.1 To change the inhalation
membrane
• Reach inside the respirator and gently pull
out the inhalation membrane. Fig. 1/7.
• Check the edge of the inhalation valve. Gently
stretch the flap until it slips over the stud.
Before After Annually
use
use
Visual inspection
•
Functional check
•
Cleaning
•
Membrane change
•
Head harness change
•
