BartelsRieger BRK 820 Mode D'emploi page 10

equipped with an EN 148-1 standard thread connection, with power assisted filtering
device, as part of an airline, with fresh air equipment.
Models 5 and 6 are positive pressure full face masks with an EN 148-3 connector (BRK
820 A model 5) or a DIN 58600 bayonet connector (BRK 820 BN model 6) so that they
can be used as components of a self-contained breathing apparatus (SCBA).
Model 1-4
The BRK 820 full face masks are composed of the following elements:
The facepiece of the mask, moulded in rubber or silicone;
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High visibility panoramic visor, moulded in natural polycarbonate or with an anti-
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splatter treatment or in glass;
A group uniting the connector (EN 148-1, EN 148-3 or DIN 58600 bayonet), the ex-
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halation valves, the inhalation valve and the speech diaphragm in one plastic body;
An internal mask which reduces the dead space, moulded in rubber and equipped
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with two valves for air circulation, which prevents the visor from fogging up;
A head harness with five straps, moulded in rubber or silicone, which is equipped
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with rapid release buckles;
A neck strap to wear the mask around the neck during breaks from work.
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The facemask is in one size and it adapts to the face without undue pressure,
creating a perfect fit.
2. Warnings and limitations
Do not use the mask with closed circuit oxygen breathing apparatus; these should be
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used with masks without exhalation valves.
Always make sure that the mask does guarantee the air tightness and perfect
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adherence to the face during the seal test.
A beard and/or the use of spectacles may interfere with the fit of the mask on the face. In
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the latter case, use corrective glasses with a special frame, available on request.
Do not use BRK 820 masks (models 1-4) for filtering systems if the air has an oxygen
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content which is lower than 17% in volume (this limit may vary according to the different
provisions in effect in the country where the equipment is used).
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Model 5 Model 6