Dräger FPS 7000 S-fix Instructions For Use Manual page 30

Maintenance
NOTICE
i i
Moistening either the mask body or the lens frame facilitates
the assembly.
Observe the centre marking on the visor.
8. Centre the new visor when inserting and make sure that it is prop-
erly seated in mask body.
9. Apply pressure onto the lens frame until it snaps
Full face
into place at the centre of the visor, then tighten
mask
with new self-locking screws until the gap is shut.
9. Apply pressure onto the lens frame until it snaps
into place at the centre of the visor. Put the mask/
Mask/helmet
helmet adapter onto the mounted lens frame, then
combination
tighten with new self-locking screws until the gap
is shut.
10. Put the cap on the connector, lock it into place on the fastening
lugs and hook it into the lens frame.
NOTICE
i i
Depending on the facepiece, the recess for the connector can
vary. Make sure that the following caps are used,
for facepieces P and RA: cap R 56 278
for facepieces PE and ESA: cap R 56 378
4.4.2 Replacing the inner mask (Figure H on page 3)
1. To remove, take hold of the inner mask at the tip of the nose, then
pull it off the pin and out of the speech diaphragm groove.
2. To fasten and centre, place the tip of the nose of the inner mask on
the pin. Fit the ring of the inner mask into the groove in the speech
diaphragm, first at the bottom and then all around.
30
4.4.3 Replacing the speech diaphragm
1. Unbutton the inner mask.
2. Unscrew the speech diaphragm with a socket wrench and remove
it.
3. Perform visual inspection of speech diaphragm and O-ring and re-
place if necessary.
4. Insert O-ring, then screw in speech diaphragm
(recommended torque: 400 ±50 Ncm).
5. Press the inner mask back into place.
4.4.4 Replacing the exhalation valve
1. Open the exhalation valve cap.
2. Unbutton the valve disc.
3. The valve disc and seat must be clean and undamaged.
RA
Clean or replace if necessary.
4. Mount the valve disc.
2. Pull the straight arm of the spring carrier outwards and
remove the spring carrier (Figure G on page 3).
3. Remove valve disc.
PE 4. The valve disc and seat must be clean and undamaged.
ESA Clean or replace if necessary.
P 5. Insert the valve disc.
6. Put the spring onto the centre of the valve disc, insert the
bent arm and lock spring carrier into place with both
arms.
7. Close the exhalation valve cap.
(Certified by Dekra Exam) Dräger FPS 7000