3M Half Facepiece Reusable Respirator 7500 Series [How to Wear PPE]

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The Half Facepiece Reusable Respirator features a mask and harness primarily made with silicone. The mask features a unique valve that reduces heat buildup and two bayonet connection ports that are used to attach disposable filters.

Before use, inspect the respirator for any tears or other signs of damage.

Next, attach the respirator cartridges onto the face piece by lining up the grooves on the bayonet connectors, pushing them together, and giving it a one-quarter turn.

There are two methods of putting on the respirator to ensure it fits properly on your face. With the standard method, start by holding the face piece up to cover your nose and mouth, then pull the harness over your head.

The alternate method comes in handy when you need to wear this respirator with a hard hat. First, fit the harness over your head. Keep one hand on the face piece and grip the strap ends with the other hand, then pull the face piece up onto your face.

Once you’ve fit the mask onto your head, grab the lower straps, place them behind your neck, and hook them together. Tighten the upper straps, then tighten the lower straps until you have a secure and balanced fit. Be careful not to over-tighten.

Before stepping into a contaminated area, you’ll need to perform a positive or negative pressure user seal check to ensure your mask is working properly.

To perform a positive pressure user seal check, cover the opening in the exhaustion valve on the front of the face piece. Gently exhale. If the facepiece bulges slightly and no air leaks are detected, then the mask is properly sealed.

To perform a negative pressure user seal check, use both hands to cover the filter cartridges. This time, gently inhale. The mask should collapse slightly and move closer to your face if it is properly sealed.
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