Sundstrom SR 200, Инструкция по эксплуатации

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4.3 Maintenance schedule
Recommended minimum requirements on mainte-
nance routines so you will be certain that the equip-
ment will always be in usable condition.
Before
use
After
use
Annually
Visual inspection
•
Functional check
•
Cleaning
•
Membrane change
•
Head harness change
•
4.4 Change parts
Always use genuine Sundström parts. Do not modify the
equipment. The use of non-genuine parts or modification
of the equipment may reduce the protective function and
put at risk the approvals received by the product.
4.4.1 To change the visor
The visor is mounted in a groove running around the visor
opening of the outer mask and is held in place by one
upper and one lower frame half.
• Use a 2.5 mm Allen key to remove the two screws
holding the frame halves together. Fig. 6.
• Carefully remove the upper frame half. Fig. 7.
• Carefully prise the top part of the mask off the visor,
and remove the visor from the lower groove. Take
this opportunity to clean the groove, if necessary.
Fig. 8, 9.
• Markings are made to show the centres of the visor,
frame halves and mask. Press the new visor into the
groove, making sure that the centre markings are in
line. To make assembly easier, coat the slot with a
soap solution or similar liquid.
• Carefully prise the top half of the mask over the visor,
and make sure that the visor is in the groove in the
mask.
• Prise the upper frame half, making sure that the centre
markings are in line. Fig. 10.
• Fit the screws and tighten them alternately until the
two halves of the frame are firmly in contact.
Fitting a glass visor
Take great care to ensure that the visor is located ac-
curately so that the centre markings on the visor, frame
and mask are in line. This will prevent subjecting the visor
to stresses that could lead to its damage.
To make assembly easier, it is important that the grooves
in the mask and frame should be abundantly coated with
a rich soap solution or with a similar liquid.
4.4.2 To change the inhalation membranes
One membrane is in the centre of the inner mask on a
fixed dowel.
• Prise off the membrane and fit a new membrane.
Fig. 11.
Two membranes are fitted, i.e. one on each inside
of the inner mask. The dowels for these membranes
are removable and should be changed whenever the
membrane is changed.
• Prise off the membranes and dowels.
• Prise the new membranes onto the new dowels.
• The membrane should rest on the larger flange, i.e.
thread the dowel with the membrane from the inside
of the mask, through the valve seat, with the smaller
flange first. Fig. 12, 13.
4.4.3 To change the exhalation membranes
The exhalation membranes are mounted on a fixed dowel
on the inside of the valve covers on each side of the
outer mask. The covers should be changed whenever
the membranes are changed.
• Snap the valve covers off the valve seats. Fig. 14
• Prise off the membrane. Fig. 15
• Press the new membranes onto the dowels. Carefully
check that the membranes are in contact with the valve
seats all round.
• Press the valve covers into place. A clicking sound
indicates that the cover has snapped into place.
4.4.4 To change the head harness
The head harness can be ordered as a spare part only
as a complete harness.
• Snap the strap holders of the head harness off the
mask strap mountings. Fig. 16, 17.
• Check that the straps are not twisted and fit the new
head harness.
5. Technical specification
Size
Manufactured in one size.
Thread
Mask and filter adapter: Rd 40x1/7”. EN 148-1:1999.
Weight
≈ 500 gram.
Materials
The material and pigments of the mask body are approved
for exposure to provisions, which minimizes the risk of
contact allergies. All plastic parts are marked with material
codes and recycling symbols.
Inhalation resistance with Particle filter
≈ 44 Pa at 30 l/min.
Exhalation resistance
≈ 56 Pa at 160 l/min.
Temperature range
• Storage temperature: from -20 to + 40 °C at a relative
humidity below 90 %.