Dräger PSS BG 4 RP, Instructions For Use Manual

Page: 58 / 78

58
Maintenance en
4. Press the safety catch handles (3) together and remove the
angled connector from the CO
2
absorber.
5. Release the tensioning bar (4).
6. Grip the CO
2
absorber on the grommet and tilt upwards.
7. Take the CO
2
absorber out of the lower retaining bracket and
remove from the carrying frame.
8. Dispose of the single-use cartridge or re-fill the refillable
cartridge.
4.2.5 Removing and testing the pressure relief valve
1. Move the pressure relief valve to the right (1) until the
clamps (2) can be pressed together.
2. Take the pressure relief valve off the spring holder.
3. Examine the O-ring of the angled connector; it must be clean
and undamaged, otherwise it must be replaced.
4. Take the valve cover (4) off the pressure relief valve.
5. Unhook the stepped valve disk (3) from the valve cover.
6. Take valve disc (5) and O-ring (6) out and check. They must
be clean and undamaged.
Replace faulty parts. Apply Molykote 111 thinly to the O-ring.
7. Re-fit the pressure relief valve.
4.2.6 Removing the breathing air cooler
1. Unhook the breathing bag from the breathing air cooler.
To do this, stretch the tab on the sleeve (A-1) and remove.
2. Unfasten the medium-pressure hose of the constant metering
valve (B-3) from the breathing air cooler (see chapter 4.2.11
on page 60).
3. Unfasten the tensioning bar (B-2).
4. Remove the breathing air cooler.
5. Remove the cover from the breathing air cooler.
To do this, lift the locking device (B-5) and release the catch
(B-4) in an anti-clockwise direction.
6. Drain the water of the ice pack or remove the cooling car-
tridge. Continue treatment of the cooling cartridge in ac-
cordance with the instructions for use.
4.2.7 Removing the lever
1. Lift the safety knob (1) and pull the lever to the right.
2. Lift the safety knob (2) and remove the lever.
NOTICE
When a refillable cartridge is being used, this should
only be filled shortly before use in accordance with the
corresponding instructions for use.
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