(2)
Put the chin into the chin cup.
(3)
Pull the head straps over your head.
(4)
Make sure the harness is in the correct position and is not twisted.
(5)
Adjust the facepiece.
(6)
Tighten the straps firmly and evenly.
5.4
Testing the Negative Pressure Seal (Face-to-Facepiece Seal)
To test facepieces for leakage using a negative pressure method:
(1)
Block the filter opening.
OptimAir® MM PAPR
17
US
5 Using the Respirator