APPLICATION
Self-contained closed-circuit oxygen breathing apparatus for work W-70 type fitted with full face mask is designed for the protection of the wearer`s airways when working in the atmosphere unsuitable to breathe due to: - oxygen deficiency - content of toxic gases or harmful substances The apparatus W-70 type is mainly conformed to the mine rescue work. Depending on the capacity of the employed absorber and the degree of filling of the oxygen cylinder, the apparatus is available for duty duration up to two or four hours.
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TECHNICAL DATA
Rated duration on using CO2 28 absorber and cylinder filled to 20 MPa 4 h
on using CO2 24 absorber and cylinder filled to 15 MPa 2 h
Oxygen supply source oxygen cylinder at capacity of 2 dm3
Reduced pressure 0,4 MPa
Oxygen supply constant at 20 MPa 1,5 dm3/min maximum at least 50 dm3/min
Volume of oxygen rinsing dosage 6,0 dm3
Capacity of breathing bag 6,5 dm3
Overall dimensions of the case:
- height 480 mm
- width 430 mm
- depth 148 mm
Mass of complete apparatus 14,5 kg
The apparatus W-70 type is approved by Higher Mining Office in Katowice for use in underground mining and by Central Institute of Work Protection in Warsaw for use in industry.
CO2 ABSORBERS
APPLICATION
These absorbers are destinated to regeneration the air exhaled by the user in the closed–circuit oxygen breathing apparatus as a single–use sup–assembly.
CHARACTERISTIC CO2
absorbers are classified according to the duration of protection (filter capacity against gases). There are three sizes of CO2 absorbers:
CO2 20 – one-hour protection
CO2 24 – two-hour protection
CO2 28 – four-hour protection
TECHNICAL DATA
Type Overall dimensiones (mm) Mass (kg)
CO2 20 70x140x200 1,6kg
CO2 24 90x180x240 2,6kg
CO2 28 90x180x280 3,5kg
Thread at connector holes 5/16" Max breathing resistance at the air flow of 30 dm3/min 40 Pa Colour canister steel gray
The arrow stamped on the canister indicates direction of air flow.
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