© Copyright, Core Protection Systems Ltd, 2021
Page 48
4.
Remove bezel by gently pulling away from the mask.
Step 2 – Attaching a new bezel
1.
Look at the inside edge of the bezel. You will see that, at the bottom of the bezel, there is a
small hole on the left-hand-side which is approximately the same width as the nut. Drop the
nut into this hole.
2.
The nut has a slightly pointed shape around the edges. One of the nut’s pointed edged should
lodge into the bottom of the bezel opening.
3.
Sometimes the nut does not naturally fall into its designated opening. In such instance,
carefully use pliers to press the nut into place.
4.
Place your new bezel onto your full face mask, pressing down the sides of the bezel into the
mask seal. Ensure the bezel is wedged securely into the rubber seal area.
5.
Place your screw into and between the two lower tabs on the bezel.
6.
Wedge the two bezel tabs together with pliers. Do this until you feel slight resistance.
a.
FYI: The purpose of the plyers is to squeeze the tabs together before the screw is
tightened, as this will reduce the compressive loads on the plastic. This is an
important step.
b.
If you feel more comfortable placing the screw between the openings after pressing
the tabs together with the pliers, this is also acceptable.
7.
Screw the two bezel tabs together. Do this until you feel slight resistance.
a.
FYI: Do not overtighten. This will cause breakages. Turn until the underneath of the
tabs just connect.
8.
Don your mask and perform a fit check, as changing the bezel can affect the mask’s seal and
therefore the performance of the mask. To understand how to don your mask and perform a
fit check, see the appropriate subsections within section 3.2.