Dräger PSS BG 4 plus

Maintenance
Dräger PSS BG 4 plus 19
4.2.8 Removing breathing bag, drain valve, minimum
valve and where applicable the water absorber
1. Compress the springs underneath the spring holder and
remove.
2. Unfasten the medium-pressure hose of the minimum valve
from the pressure reducer (see chapter 4.2.11 on page 20).
3. Remove the drain valve (A-4) from the retaining clips (A-5).
4. Release the safety catch (2) from the stop tab (1) on the
spring carrier.
5. Remove the breathing bag with minimum valve (3) and
drain valve from the spring holder.
6. Detach the minimum valve from the breathing bag:
To do this, stretch the tab on the sleeve and remove from
the minimum valve.
7. If a water absorber is fitted:
Remove the water absorber from the drain valve and
dispose of it.
8. Detach the drain valve from the breathing bag:
To do this, stretch the tab on the sleeve and remove.
9. If the breathing bag needs to be replaced, unhook the
pressure plate (B-6) from the breathing bag.
10. Check the drain valve:
a. Unscrew the cover (8).
b. Remove the valve disk (7), check and replace with
a new valve disk if necessary.
c. Insert the shaft of the valve disk into the hole.
d. Position the springs (10) centrally onto the valve disk.
e. Screw the cover on securely.
4.2.9 Removing the switch box
1. Use a slotted screwdriver to release the switch box from
the holder.
2. Pull the switch box out of the holder and put it aside. Do not
detach the electrical lines.
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1
2
3
6
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A B
4
5
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10
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Draeger Training 11/16 rev 1