Dräger X-plore 6000 Notice D'utilisation page 82

Maintenance
8. Compress the nose on the connector clamp with pliers until the
facepiece connector is securely located in the facepiece body.
9. Press the edge of the nose cup into the groove in the screw ring
and ensure that it engages all around. The edge of the nose cup
must fit all around the full circumference of the screw ring. The
center marks on the facepiece connector and on the nose cup
must match.
4.3.4 Replacing a nose cup valve disc
1. Pull out the old valve disc towards the inside.
2. Insert the stud of the new disc into the hole from inside, and pull it
towards the visor until the undercut of the stud is visible. The valve
disc should make even contact with the inside surface.
4.3.5 Replacing the speech diaphragm and O-ring
1. Pull the nose cup out of the groove in the screw ring.
2. Unscrew the screw ring with a spanner.
3. Turn the spanner over and carefully insert it in the holes of the
grille, taking care not to damage the foil on the diaphragm.
4. Turn the speech diaphragm to release it and remove it (figure H).
5. Remove the O-ring from the connector with the sealing ring lifter.
6. Check speech diaphragm and O-ring and replace if necessary.
7. Press the edge of the nose cup into the groove in the screw ring
and ensure that it engages all around. The edge of the nose cup
must fit all around the full circumference of the screw ring. The
center marks on the facepiece connector and on the nose cup
must match.
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4.3.6
1. Remove the exhalation valve cover.
2. Grip under the edge of the valve disc and pull the holding stud out
3. Clean the valve seat.
4. Moisten the new valve disc with water and press it into the hole
5. Refit the exhalation valve cover so that it clicks into place.
4.3.7
1. Pull the inhalation valve out by its tab.
2. Remove the old valve disc and fit new disc.
3. Press the inhalation valve into the mask connector until it makes
4.4
The leak test should be performed with an appropriate test device
(e. g. the Testor or Quaestor series) with test adapter and exhalation
valve plug or Test Kit.
(1) Checking leak tightness
1. Moisten the face seal and exhalation valve with water.
2. Mount the facepiece on the test head.
3. Make sure that the face seal fits tightly onto all parts of the test
4. Seal the connector with the test adapter and produce a negative
The facepiece is considered leak-tight if the pressure drop is less than
1 cm H
(2).
(Use Instructions for NIOSH-approved full facepieces)
Replacing the exhalation valve disc
of the hole.
until it engages. The valve disc must make even contact all
around.
Replacing the inhalation valve disc
even contact all-round. The valve disc must not be pinched. The
disc must face inwards, and the stems face outwards.
Leak tests
head. Inflate the test head if necessary.
pressure of 10 cm H O (10 mbar).
2
O (1 mbar) per minute. If the facepiece leaks, continue with
2
Dräger X-plore 6000