Fitting The Breathing Bag; Fitting The Breathing Air Cooler; Connecting The Hose Of The Constant Metering Valve; Fitting The Switch Box - Dräger PSS BG 4 RP Instructions For Use Manual

3. Attach the minimum valve to the breathing bag, so that the
pin of the minimum valve and the marking of the breathing
bag line up (1).
4.4.4

Fitting the breathing bag

1. Attach the pressure plate to the breathing bag, if necessary.
Note the preferred orientation; the button securing the
lever (A-1) must point upwards.
2. Slide the breathing bag into the closed-circuit breathing
apparatus.
NOTICE
i
i
Ensure that the toggle on the minimum valve is
positioned underneath the pressure plate. To ensure
the functional capability of the apparatus, the pressure
plate must not be inserted between the toggle and the
housing of the minimum valve.
3. Insert medium-pressure hose and minimum valve connector
through the hole in the spring holder. Ensure that the pin on
the minimum valve slips into the cut-out on the spring holder.
4. Fasten the minimum valve to the spring holder using the
locking catch. Carefully pull the breathing bag inwards to
check if the minimum valve fits correctly.
5. Insert the medium-pressure hose of the pressure reducer (B-
4). It must engage into place. Gently pull the plug to check if
the medium-pressure hose fits correctly.
6. Press the drain valve (A-2) into the clamps on the carrying
frame (A-3).
1
2
3
4.4.5

Fitting the breathing air cooler

1. Position the breathing air cooler onto the two metal pins
and fasten with the tensioning bar.
2. Attach the sleeve of the breathing bag onto the breathing
air cooler grommet.
1
4
A
4.4.6 Connecting the hose of the constant metering
valve
1. Guide one metal plug of the blue medium pressure hose
under the stem of the spring carrier.
2. Insert the metal plug into the breathing air cooler (A-1). It must
engage into place.
3. Fix the medium-pressure hose (A-2) into the clamps next to
the breathing air cooler (A-3).
4. Insert the other plug on the blue medium-pressure hose in-
to the pressure reducer (B-4). It must engage into place.
Pull gently on the plugs to check that the medium-pressure
hose is sitting securely.
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4.4.7

Fitting the switch box

Ensure that the cables are not twisted. Slide the switch box

into the mount until it engages.
4.4.8 Fitting the CO
When a refillable cartridge is being used, this should not be

filled until it is fitted into the closed-circuit breathing appa-
ratus. Take the corresponding instructions for use into ac-
count.
Check the following points when using a single use car-

tridge:
The aluminium bag is completely sealed and

undamaged,
The use-by date on the label has not yet expired.

WARNING
!
Do not use a CO
these requirements as the functional capability of the
CO absorber would no longer be guaranteed.
2
Failure to follow this warning could lead to death or
serious injury.
1. Unpack the CO
B
2. Insert the CO
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the tensioning bar (5).
3. Attach the breathing bag sleeve onto the CO
connecting piece (6).
4. Fitting the lever:
a. Observe preferred position: Insert the lever into the
device so that the long end of the lever is pointing
upwards.
b. Press the lever on both attachment points. Each safety
knob must engage.
5. Press the pressure relief valve (7) from behind into the two
slots in the spring holder.
6. Apply Molykote 111 thinly onto the O-ring of the angled
grommet (4).
1
4
2
3
A
absorber
2
absorber that does not conform to
2
absorber if necessary.
2
absorber into the carrying frame and fasten to
2
Maintenance en
B
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absorber
2
61