This respirator can be worn as either a standard fixed suspension or a drop down suspension
for users who are wearing hard hats. Before beginning the steps below, adjust the head
cradle size as needed to fit comfortably on your head. For the standard suspension (Figure A),
position the straps beneath the locking tabs. For the drop down suspension (Figure B),
position the straps over the locking tabs.
Standard Suspension
Place the respirator over the mouth
and nose, then pull the head harness
over the crown of the head.
1
Drop Down Suspension
While holding the head harness
strap ends with one hand, slide the
facepiece up onto your face.
Grasp the straps, place them at the
back of the neck and hook them
together.
For Both Suspensions
2
Adjust strap tension by pulling ends
until a secure fit is obtained. Balance
strap tension by adjusting the top
and bottom strap buckles.
Do not over-tighten.
3
Strap tension may be decreased by
pushing out on back side of buckles.
4
Always read and follow User Instructions.
A
B
Positive Pressure User Seal Check
Cover the opening in the exhalation valve
cover with your hand. Be careful not to
disturb the position of the respirator.
Exhale gently.
If the facepiece bulges
slightly and no air leaks are detected
between your face and the facepiece,
proper seal has been obtained.*
Using Particulate Filters
Place your thumbs onto the center portion
of the filters, restricting airflow into the
breathing tube of the filters. Be careful not
to disturb the position of the respirator.
Inhale gently.
If you feel the facepiece
collapse slightly and pull closer to your face
with no leaks between your face and the
facepiece, a proper seal has been obtained.*
Using Cartridges
Place palms of hands to cover the cartridge
or the open area of the filter retainer (when
retainer is attached to the cartridge) to
restrict airflow. Be careful not to disturb
the position of the respirator.
Inhale gently.
If you feel the facepiece collapse slightly
and pull closer to your face with no leaks
between your face and the facepiece, a
proper seal has been obtained.*
Negative Pressure User Seal Check
Using Hard Case Particulate Filters
Using hands, press or squeeze filter covers
toward facepiece to restrict airflow. Be
careful not to disturb the position of the
respirator.
Inhale gently.
If you feel the
facepiece collapse slightly and pull closer
to your face with no leaks between your
face and the facepiece, a proper seal has
been obtained.*
* If you cannot achieve a proper seal, do not enter contaminated area.
See your supervisor.
Perform a User Seal Check
Before assigning any respirator to be worn in a contaminated area, a qualitative or quantitative
fit test must be performed per U.S. OSHA standard 29CFR 1910.134 or local requirements.
Wearing your 3M™ Half Facepiece Reusable
Respirator 7500 Series
Helping You Wear it Right
