Maintaining The Respirator - MSA Advantage 4000 Series Operation And Instructions Manual

REMOVING THE RESPIRATOR WITH RUBBER
HARNESS
To remove the facepiece:
1. Push the bottom buckles forward to loosen and fully
extend the bottom straps.
2. Grasp the inlet assembly and pull the mask up and
away from face.
REMOVING THE RESPIRATOR WITH CLOTH
HARNESS
To remove the facepiece:
1. Push the bottom buck-
les forward to loosen
and fully extend the
bottom straps.
2. Push the upper buckles forward to loosen the upper
straps.
3. Grasp the inlet assembly and pull the mask up and
away from face.
MAINTENANCE
This respirator must be kept in good condition to function
properly. When any respirator shows evidence of exces-
sive wear or damage, it must be replaced immediately.
This respirator, when not in use, should be stored in a
clean dry location, such as its storage bag. Do not distort
the facepiece during storage. When disposing of the res-
pirator or its components, do so in accordance with local,
state and federal regulations.
INSPECTION
REPAIR
Note: All repair procedures assume that the respirator is
clean and free of contaminant and that the fil-
ter(s)/cartridge(s) are removed.
Removing the Inlet Assembly
1. Press the Inlet assem-
bly release button.
2. Rotate the adapter
clockwise a quarter
turn until the notch and
part number are at 9:00
o'clock.
3. Firmly pull the inlet assembly from the facepiece
assembly by grasping the inlet assembly and base of
the facepiece.
Inlet Assembly Instructions
DO NOT use a sharp object to remove the o-ring. A
damaged o-ring will not form an adequate seal with
the facepiece.
Disassembling the Twin-Cartridge Inlet Assembly
1. Carefully roll the o-ring out of its groove and discard.
2. Carefully pry open the exhalation cover.
3. Depress Inlet assembly release button. Rotate the
handwheel 135 degrees (3/8-turn) clockwise. Pull the
adapter off the inlet assembly and rotate it another 45
degrees (1/8-turn).
4. Carefully remove the button, allowing the springs to
fall out.
5. Pull the adapter and the twin-cartridge manifold apart,
taking care not to drop the O-ring between them.
15
Plugged Inlet Assembly
RD40 Inlet Assembly
TAL 018 (L) Rev. 6 - 10073772