Disposal; Despatch Rules; Maintenance; Inspection And Service - Dräger Oxyboks K 25 Gebrauchsanweisung

Disposal

The oxygen self-rescuer is to be discarded after use.
Deactivating used oxygen self-rescuer
— Prevent combustible substances (petrol, grease, solvents etc.) from
entering the oxygen self-rescuer to prevent danger of fire!
— Use protective goggles and gloves.
— Remove starter from the case and discard it according to local
regulations.
— Remove KO cartridge from the case.
2
— Immerse dismantled KO cartridge completely in water, until gas
2
bubbles no longer emerge. Neutralize the resulting solution with a 3 %
acid e.g. HCl in a 1:1 ratio.
— All plastic components are identified and can be collected according to
their material characteristics for recycling.
We dispose for you! (price on request)
1)
Please send damaged, opened , used and expired oxygen self-rescuers in
an approved packaging to the following address:
Dräger Intek GmbH
Bochstrasse 1
D-23569 Luebeck
Germany
Phone ++49 451 882 1813
Fax ++49 451 882 3549
e-mail: recycling@draeger.com

Despatch Rules

Hazard regulations apply when this breathing protective device is in transit.
Breathing protective devices are classified as:
UN 3356 "Oxygen generator, chemical" Class 5.1, packing group II
Starters of damaged and/or opened and partly used breathing protective
devices must be activated before transit. After cooling down, the breathing
protective device has to be sealed in a plastic bag. The breathing protective
device has to be dispatched in an approved packaging (e.g. Dräger
Transport packaging 63 04 511).
The shipment is classified as:
UN 3085, Oxidizing solid, corrosive, n.o.s. (Potassium Superoxide,
Potassium Hydroxide), Class 5.1, packing group I
Please note special regulations for shipping by airfreight.

Maintenance

The user may carry out the following repair procedures himself:
Replacing the indicator window (67 33 647)
Carefully remove the defective indicator window using a screw driver.
Insert the new indicator window into the indicator housing exerting
slight pressure.
Replacing the pictograph (67 33 682/ 67 33 910)
Remove the defective pictograph, e.g. with a razor blade.
Clean the surface using a degreasing agent.
Affix new pictograph.

Inspection and Service

— Daily inspection (see "Daily Inspection" on page 8).
1) Before you send the oxygen self-rescuer, please activate the starter!
Afterwards please seal the oxygen self-rescuer in a PE bag.
10

Oxygen Generation

The oxygen required for breathing is supplied by a solid chemical
substance, potassium dioxide (KO
(CO ) and water vapour (H O) in exhaled air. These two components of the
2 2
exhaled air are absorbed by the KO
oxygen (O ) in KO . The simplified reaction formulas are as follows:
2 2
O → 2 KOH +
3
2 KO + H
2 2
→ K
2 KOH + CO CO + H
2 2 3
→ K
2 KO + CO CO +
2 2 2 3
KO is both O source and CO
2 2 2
between inhalation and exhalation, the breathing air flows from the
breathing bag through the KO cartridge to the heat exchanger and then
2
back again. A relief valve controls the volume in the breathing bag.

Technical Data

approved according to DIN EN 13 794
Temperature class in acc. with CEN 50014
max. surface temperature
Storage temperature
Lowest temperature for use
Nominal service life
Service life
at 10 L/min minute volume
at 30 L/min minute volume
at 35 L/min minute volume
at100 L/min minute volume
Volume of breathing bag
Inhalation/exhalation resistance
at 35 L/min sinusoidal flow
at the beginning of the operating period
at 35 L/min sinusoidal flow
during use
CO content
2
in inhaled air
in inhaled air during use
Temperature of inhaled air
at the end of the operating period
Weight
unopened
during use
Dimensions (W x H x D)
Service Life
1)
carried daily
stored in depot
1) Single shift operation max. 8 h a day, 5 working days a week; during multi shift ope-
ration the intervals reduced accordingly.
), which reacts with the carbon dioxide
2
to release the chemically-bound
2
/ O + heat
2 2
O + heat
2
3
/ O + heat
2 2
absorber at the same time. Alternating
o
300 C
o o
0 C...+50 C
o
-5 C
25 minutes
120 minutes
30 minutes
25 minutes
8 minutes
>6 litres
4 mbar
max. 10 mbar
less than 1% by vol.
max. 2.5 % by vol.
o
max. 70 C
(dry air)
approx. 2.1 kg
approx. 1.2 kg
205 x 189 x 89 mm
5 years
10 years