Donning The Compressed Air Breathing Apparatus; Condensed Prior To Use Check - MSA alpha Serie Gebrauchsanleitung

USING THE COMPRESSED AIR BREATHING APPARATUS
With right-angled T-piece, align the compressed air cylinders by hinging
the pressure reducer and pulling the cylinders together (see Instruction
Manual for T-pieces).
(9) Tighten all three high pressure connection handwheels.
(10) Briefly open cylinder valves and check for escaping air, retighten if
necessary.
(11) Check tight position of compressed air cylinders, retighten if necessary.
(12) Tighten cylinder strap on loose end.
Attention!
Tighten cylinder retaining strap only when clamping lever is in clamped
position, otherwise, it can not be closed.
(13) Hinge tension clamp down until it catches.
(14) Fasten end of the cylinder strap onto Velcro strip.
(15) Briefly open cylinder valve and check for escaping air, retighten if
necessary.
3.3.

Donning the Compressed Air Breathing Apparatus

(1) Check all components of the compressed air breathing apparatus for
defects and malfunctions.
(2) Don breathing apparatus with shoulder straps fully extended.
(3) Close hip belt and tighten loose ends.
(4) Tighten shoulder straps until the back plate fits comfortably.
(5) Adjust shoulder straps to achieve a comfortable weight distribution between
shoulder straps and hip belt.
(6) If required, connect lung governed demand valve to medium pressure
coupling (see Instruction Manual for Lung Governed Demand Valve).
3.4.

Condensed Prior to Use Check

(1) Open cylinder valve(s) and check pressure on the combo pressure gauge.
The pressure values must read:
for 300 bar cylinders
for 200 bar cylinders
(2) Close cylinder valve(s) and observe pressure gauge.
•
The pressure must not drop more than 10 bar in 60 s.
(3) Carefully activate flushing mode of the lung governed demand valve, closing
exit port as much as possible.
(4) Observe pressure gauge.
•
The warning signal must sound at 55±5 bar.
10
minimum 270 bar
minimum 180 bar
BD 96 SL
MSA
GB