Maintenance Schedule - Sundstrom SR 900 Mode D'emploi

If any leakage is detected
• check the exhalation membranes and
exhalation valves.
• adjust the straps of head harness,
• switch to alternative size of the respirator.
3.5 Taking the mask off
Do not take off the mask until clear of the
hazardous area.
41 Take the mask off.
4. Maintenance
4.1 Cleaning
Remove the filter, the covers for the exhala-
42
tion valves, the membranes, the inhalation
membrane and the head harness. The har-
ness can be washed, but takes extra time
to dry.
43
Clean the mask and all parts with Sundström
cleaning tissues SR 5226.
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.
• Inspect all parts and replace with new parts
as necessary. Critical areas are the exhala-
tion membranes and the membrane seats
which must have clean and undamaged
contact surfaces.
• Leave the mask to dry, and then assemble
it.
NOTE! Never use solvents for cleaning.
4.2 Storage
The best way to store the mask is in the provided
storage bag 7 , or Sundström storage box SR
230 or storage bag SR 339
29
away from direct sunlight or other sources of heat.
NOTE! A gas filter should be stored in a tightly
sealed plastic bag

4.3 Maintenance schedule

Minimum requirements on maintenance
routines so you will be certain the the equipment
will always be in usable condition.
, ( ). Keep it
30 66
7 (and no 65 ).
Before
use
Visual
check
Fit check
Cleaning
Change
pre-filter
Change
membrane
Change
harness
Change
gasket
Change See User instructions for filters
filter
4.4 Change parts
Use only genuine Sundström parts. Do not
modify the equipment. Use of parts from
other suppliers will compromise the approvals
granted to the product.
4.4.1 Changing the inhalation
membrane
44
Remove the membrane.
• Fasten the new membrane on the pin.
4.4.2 Changing the exhalation
membrane
45
Remove the protective cap and the mem-
brane.
Press the new membrane onto the pin.
46
Carefully check that the membrane is in
contact with the membrane seat all round.
Press the new protective cap into place.
47
4.4.3 Changing the head harness
48
Detach the head harness from the mask.
Attach the head harness to the mask.
49
4.4.4 Change filter holder
Remove the filter from the filter holder.
50
Detach the filter holder from the mask by
turning it a ¼ of a lap.
51
Attach the new filter holder. Make sure
the gasket is mounted correctly on the
filterholder, see
4.4.6 Fitting the filter in a mask
After Every
use day
53
. Attach the filter, see
54
-
Every
year
56
.
27