4. Reverse the lens housing assembly so that the door hinge is at the top.
5. Re-install the lens retaining rings and screws.
6. Perform the Air Tightness Test. (See
4.3 Section C: Air-Tightness Test (Face-to-Facepiece Seal)
10
Accessories
10.1
Nosecup (for Ultravue Facepieces)
The nosecup is used with the Ultravue (full) facepiece to reduce lens fogging caused by high humidity or temperatures below
32°F. Nosecups are available in small (P/N 471710), medium (P/N 471711), or large (P/N 471712).
10.1.1 Installing the Nosecup
1. Place the nosecup in the facepiece and position it so its rubber ring faces toward the plastic retainer ring.
2. Starting at the top, stretch and push the rubber ring of the nosecup under the plastic
retainer ring of the speaking diaphragm assembly.
3. Continue the stretching the nosecup ring and work it into place.
10.2
Spectacle Kit
The spectacle kit is designed to be used by people who wear glasses. The temple bars of conventional glasses stick through
the sealing edge of a full facepiece and prevent a proper seal. The kit includes the support assembly, a rubber block, and the
spectacle frame. Prescription lenses can be obtained locally or through MSA.
10.2.1 Installing the Kit
1. Hold the support assembly so that the “coated” arms are up and the rubber block is toward the facepiece lens.
2. Squeeze the arms together and insert the assembly into the facepiece.
27
Abrasi-Blast Respirator
US
10 Accessories
