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functioning properly, and lying flat on the sur- phragm, make sure that it is in place, not punc-
face of the valve seat. The sealing surfaces tured, and that the gasket is in place.
must be clean and not chipped, scratched, or
broken. C. Check the integrity of the facepiece
to be sure it is not cut, torn, modified, deterio-
D. Make sure that the exhalation valve rated, or dirty. The elastomer should not be
covers are present and attached to the res- abraded and the sealing surface should be
pirator. smooth and undamaged.
E. An approved half-mask respirator D. Make sure that all the required
includes the facepiece and filters. Check the clamps are in place and are specific for the res-
respirator to be sure the correct filters for the pirator being inspected.
hazard are in place. The filter and filter holder
threads should not be scratched, chipped, or E. Inspect the inhalation and exhala-
otherwise damaged. If gaskets are required tion valves to see that they are in place and
between the filter and filter holder be sure pliable, functioning properly, and lying flat
they are in place and in good condition. Re- on the surface of the valve seat. The sealing
move the gaskets to check for dirt under them. surfaces must be clean and not chipped,
scratched, or broken.
F. Make sure that the gaskets fit prop-
erly in the filter holders. F. An approved full facepiece respira-
tor includes the facepiece and the filters. Check
G. If the filters seal directly against the the respirator to be sure the correct filters for
facepiece, be sure that the sealing surface is not the hazard are in place. The filter and filter
torn, chipped, cut, or otherwise damaged. holder threads should not be scratched,
chipped, or otherwise damaged. If gaskets are
H. Inspect the filters to be sure that the required between the filter and filter holder
threads are not scratched, chipped, dented, or be sure they are in place and in good condi-
otherwise damaged. tion. Remove the gaskets to check for dirt un-
der them.
I. The strap assembly will usually
have corrugations in the rubber that holds the G. The strap assembly will usually have
strap tightly once it is placed on the head and corrugations in the rubber that holds the strap
tightened. Be sure that the corrugations are tightly once it is placed on the head and tight-
not worn off, all clips are present, and the ened. Be sure that the corrugations are not
straps are attached to the mask. worn off, all clips are present, and the straps
are attached to the mask.
Inspect replaceable filter full
facepiece respirators as follows: H. Check to see that the straps on the
respirator are elastic, pliable, and have not been
A. Check to see that the lens in a full knotted to shorten them. The buckles and any
facepiece respirator is not scratched, cracked, attachment must be present and working cor-
broken, or otherwise damaged. The lens should rectly.
be completely sealed around the facepiece.
I. Make sure that the exhalation valve
B. If the respirator has a speaking dia- covers are present and attached to the respirator.
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