USING THE COMPRESSED AIR BREATHING APPARATUS
MSA
22
AirMaXX classic
(9) Close the coupling by pushing it together using a "small amount" of force
and checking that the arrow of the indicator ring is vertically aligned with the
back plate.
(10) Proceed as described from (11) to (14) for pressure reducer with thread
connection.
3.4. Adjusting the Back Plate
Fig. 15
Adjusting the back plate
Operate catches clips on the inside of the back plate in direction of arrow and
push adjusting plate up or down to desired position and let catches engage.
3.5. Condensed Check Prior to Use
(1) Open cylinder valve(s) and check pressure on the pressure gauge.
The pressure values must read:
for 300 bar cylinders:
minimum 270 bar
for 200 bar cylinders:
minimum 180 bar
(2) Close cylinder valve(s) and check pressure gauge.
•
The pressure must not drop more than 10 bar in 60 seconds.
(3) Carefully activate flushing mode of lung governed demand valve, closing exit
port as much as possible.
(4) Observe the pressure gauge.
•
The warning signal must sound at 55
±
5 bar.
3.6. 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 back plate fits comfortably
