Dräger PSS BG 4 RP, Instructions For Use Manual

Page: 51 / 78

Use
51
en
6. Close the closed-circuit breathing apparatus if necessary
(see chapter 3.3.1 on page 51).
7. Don the closed-circuit breathing apparatus
(see chapter 3.3.5 on page 53).
3.3.1 Opening and closing the closed-circuit breathing
apparatus
Open the closed-circuit breathing apparatus as follows:
1. Slide the sliding bolts on the handle of the closed-circuit
breathing apparatus using your thumb and finger and tip
over so that they engage.
2. Fold out the protective cover until the guide and the two pins
on the lower edge are unlocked.
3. Unhook the pin and remove the protective cover.
Close the closed-circuit breathing apparatus as follows:
1. Attach the guide and the two pins on the lower edge of the
cover in the device.
2. Close the protective cover.
3. Tilt the sliding bolts and slide outwards.
3.3.2 Fitting the compressed oxygen cylinder
The compressed oxygen cylinder may only be filled with
oxygen of the following quality characteristics:

Purity: ≥ 99.5 vol. % O
2

Water content: ≤ 0.05 mg/L oxygen

Tasteless and odourless

National regulations apply for the maximum permissible
contaminants, in Germany for example:
Insert gases (N
2
+ Ar): 5000 ppm
Carbon monoxide (CO): 5 ppm
Carbon dioxide (CO
2
): 300 ppm
Oil: ≤ 2.5 mg/m
2
The maximum filling pressure permitted is 200 bar.
Fit the compressed oxygen cylinder as follows:
1. Test the high pressure sealing ring on the pressure reducer
connecting piece for damage and impurities. It must be
clean and undamaged. Replace if necessary.
2. Ensure that the cylinder mount is adjusted to the diameter of
the cylinder.
CAUTION
The closed-circuit breathing apparatus may only be
used when the functional test has not produced any
faults.
!
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WARNING
Ensure that the connection is not soiled with oil or
grease. To avoid death or serious injury never allow
pressurised oxygen to come into contact with oil,
grease or similar contaminants. Either a fire, an
explosion or both may also be caused.
!
100mm
108mm
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