Visual, Function And Tightness Check; Warning Device Check; High Pressure Gaskets Check; Overhaul - MSA AirMaXX alpha Serie Manual Del Usuario

MSA
4.4.

Visual, Function and Tightness Check

(1) Visually check the high pressure gaskets (see 4.6).
(2) Connect compressed air cylinder(s) to carrying plate (see 3.1 and 3.2).
(3) Check all parts of the compressed air breathing apparatus for visible defects
or malfunctions, such as incorrectly assembled harness, loose compressed
air cylinders, incorrectly fitted lines, etc.
(4) Open cylinder valve(s) and check operating pressure on pressure gauge.
•
The pressure values must read:
(5) Close cylinder valve(s).
•
After 60 seconds the pressure drop in the pressure gauge must not
exceed 10 bar.
(6) Check warning device (signal whistle) (see 4.5).
4.5.

Warning Device Check

(1) Connect lung governed demand valve to medium pressure line.
(2) Open cylinder valve(s).
•
The pressure on the pressure gauge must be at least 120 bar.
(3) Close cylinder valve(s).
(4) Carefully activate flushing mode of lung governed demand valve (see
Instruction Manual for Lung Governed Demand Valve)
(5) Observe pressure gauge.
•
The warning signal must sound at 55±5 bar.
4.6.

High Pressure Gaskets Check

Visually check the sealing ring of the cylinder connector in the pressure reducer.
Damaged sealing rings must be replaced.
4.7.

Overhaul

The overhaul of the pressure reducer may only be performed by MSA or an
authorised service centre.
Attention!
Pressure reducers are completed with a lead seal. Where the lead seal
is missing or damaged, it can not be guaranteed that they are ready for
use or that they correspond to the approval status.
Optimal use of the compressed air breathing apparatus is not assured
in this case.
GB
MAINTENANCE AND CARE OF THE SCBA APPARATUS
for 300 bar cylinders
for 200 bar cylinders
minimum 270 bar
minimum 180 bar
AirMaXX SL
17