INSPECTION
REMOVING THE RESPIRATOR WITH RUBBER HAR-
NESS
To remove the facepiece:
1. Push the bottom buckles forward to loosen and fully
extend the bottom straps.
2. Insert thumbs under the
bottom harness straps.
Pull it up and away
from face.
REMOVING THE RESPIRATOR WITH PLASTIC ADVAN-
TAGE HARNESS
1. To loosen the harness, push the bottom buckles for-
ward and loosen.
2. Grasp the mask by the connector or filter and pull
mask backward off the head.
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.
Refer to the Preparations for Donning section for proper
inspection of the respirator. 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 respirator or its components, do so
in accordance with local, state and federal regulations.
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.
Component Housing Cover Disassembly &
Reassembly
1. To remove the cover, squeeze sides of component
housing cover at the bottom, lift out and up on cover
by using the bottom cover tab, disengaging the com-
ponent housing tab.
2. Slide the cover up to
remove it from top tabs
of the component
housing.
3. To install the cover,
insert the top tab of
component housing
into the top slot of
cover, press the bottom
of cover down over the
bottom tab of the com-
ponent housing until it
snaps into place.
Component Housing Disassembly
Twin Port Disassembly
1. To remove the component housing from the facepiece,
remove the component housing cover and nosecup (if
used).
2. Insert thumbs into the notches on either side of "U"
Retainer and slightly spread outward to disengage the
retainer.
3. Slide the "U" Retainer down to notches and lift the
retainer up to remove it from the component housing.
4. To remove the component housing from the facepiece,
push in on the bottom of component housing pushing
it into the facepiece.
5. Remove component housing from the inside of the
facepiece.
6. Using your fingers to remove the O-ring, press in firm-
ly on both sides of the O-ring, slide fingers up the O-
ring, and grasp the O-ring. Roll the O-ring out of com-
ponent housing groove.
DO NOT use a sharp object to remove the O-ring. A
damaged O-ring will not form an adequate seal with
the facepiece.
7. To remove the nosecup (if used) from the component
housing, grasp the nosecup and pull to disengage it
from the component housing.
8. To remove the exhalation valve from the component
housing, gently pull one edge out of the center hole of
the exhalation port.
15
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