MAINTENANCE
MSA
Advantage AirElite Mask
Removing mask lens
(1) Disassemble the mask as described in Section 5,
ensuring that the inner mask is removed with the
connection piece.
(2) Loosen screws on the lens frame.
(3) Remove both halves of the lens frame.
(4) Remove lens.
(5) Remove lens wiper (
Section 5.3).
Fitting new lens
Ensure before fitting the new lens, that the
mask body groove is completely clean.
(1) Fit lens wiper to the new mask lens
(
Section 5.3).
(2) Fit the new mask lens in reverse order from the
disassembly.
5.3. Replacing the Lens Wiper
(1) Unscrew wiper screw.
(2) Remove washer and lens wiper from the shaft.
(3) Before assembly of the new wiper remove the shaft with the O-ring and
lightly coat with special grease. BARRIERTA 1 EL is recommended
(
ordering information).
(4) Fit the O-ring again with the shaft.
(5) Place the lens wiper and washer on the shaft again and secure with the
wiper screw.
Secure the wiper screw during the assembly with unlockable screw
sealing coat LOCTITE 242 (
ordering information).
5.4. Leak Test
The testing of the full face masks for tightness is performed using the MSA mask
leak testing instrument in combination with the MSA mask leak testing adapter
with plug connector 10074842 in accordance with the relevant operating manual.
The full face masks are considered tight when, with overpressure and
underpressure respectively in the mask of 10 mbar, the pressure change is not
more than 1 mbar within a minute.
16
3S-R AirElite / Advantage AirElite / Advantage 4000 AirElite Full Face Masks
