Dräger Panorama Nova ESA Gebrauchsanweisung Seite 16

Replacing the valve discs on the control valves
Pull out the old valve disc towards the inside.
Insert the stud of the new disc into the hole from inside, and pull it
towards the visor until the recess of the stud is visible.
The valve discs should make even contact with the inside surface.
Replacing the speech diaphragm or O-ring
Pull the inner mask out of the groove in
the screw ring.
Use the socket wrench R 26 817 to
unscrew the screw ring.
Turn the socket wrench around and
carefully insert it in the holes of the
protective screen. Do not damage the
diaphragm.
Twist the speech diaphragm loose and remove it.
Use sealing ring extractor R 21 519 to remove the O-ring out of
the connector.
Check the speech diaphragm and O-ring, and replace if
necessary.
Press the inner mask back into place. In doing so, ensure that the
entire edge fits in the groove. The centre markings on the
connector and the inner mask must line up.
Replacing the exhalation valve disc
Replace the exhalation valve disc (see "Visually inspect the
exhalation valve" on page 14).
Fit the exhalation valve cover. Ensure that it engages.
Replacing the inhalation valve or valve disc
Use a blunt object or the sealing ring extractor R 21 519 on the
round thread seal to lift and pull out the inhalation valve.
Remove the old valve disk and fasten the new disk.
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Press in the inhalation valve seat with valve disc in a V shape
around the circumference and allow it to snap into the connector
in such a way that it fits perfectly all around. The valve disc must
not become jammed. The disc points inwardly, the studs point
outwards.
Storage
Loosen the harness as far as possible (handle tab).
Wipe uncoated visors with an anti-static cloth.
Do not wipe coated visors.
Pack the full face mask in its bag or storage box.
Store it in a dry, dust-free place where it is not deformed.
Storage temperature -15 °C to +25 °C.
Keep out of direct sunlight and heat.
Observe ISO 2230 "Rubber Products - Guidelines for Storage", and
national guidelines for the storage, maintenance and cleaning of
rubber products.
Dräger rubber products are treated with an agent to protect against
premature aging which in some cases is visible as a grey-white
coating. This coating can be washed off with a brush and soapy water.