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4. Fit the respirator on your face and fasten the strap <br /> around your neck. Don 't twist the straps. Use the <br /> metal siide' to tighten or loosen the fit (don 't over- <br /> tighten) . <br /> 5. Test the fit: <br /> t <br /> a. Lightly cover the exhalation valve with the palm <br /> of your hand. Exhale. . . if there is a leak , you , <br /> will feel air on your face. <br /> b. Cover the cartridges with the palms of your hands. <br /> Again, don 't press too hard. Inhale. . . the face- <br /> piece should collapse against your face. <br /> C. If there is a leaf; with either test , adjust the <br /> headbands or reposition the facepiece and test <br /> test until no leakage is detected. <br /> 8. 2.3 Sanitizing Procedures <br /> 1 . Remove all cartridges and seals not a <br /> ffixed to their <br /> seats. <br /> 2. Remove elastic headbands. <br /> 3. Remove exhalation cover. <br /> 4. Remove speaking diaphragm or speaking-exhalation valve <br /> .� assembly. <br /> k <br /> 5. Remove inhalation valves. <br /> 6. Wash facepiece and breathing tube in cleaner/sanitizer <br /> ; r powder mixed with warm water , preferably at 120 to 140 <br /> degrees F. Wash components separately from the face- <br /> mask , as necessary. Remove heavy soil from surfaces <br /> with a hand brush. <br /> 7. Remove all parts from the wash water and rinse twice <br /> in clean warm water. <br /> B. Air-dry parts in a designated clean area. <br /> T. Wipe facepieces, valves, and seats with a damp lint- <br /> free cloth to remove any remaining soap or other <br /> I� foreign materials. <br /> r� J <br /> - 15 - <br />