3. Clean the valve seat and rubber flapper on the valve
stem assembly with a soft cloth or soft bristle brush. See
figures 3 and 4. Use warm water and MSA® Cleaner-
Sanitizer, Part Number 34337. Add one package of
powdered Cleaner-Sanitizer to a gallon of warm water (about
120°F). It is not necessary to clean the compression spring.
Rinse parts thoroughly with warm clear water.
CAUTION: Cleaning and sanitizing at the
recommended 120°F temperature will
avoid overheating and distortion of parts
which would necessitate replacement.
4. Dry all the parts by air drying or blowing clean dry
breathable compressed air over the parts.
5. Reassemble the valve by setting the valve body on a
clean surface with the seat side up, see figure #5. Insert the
stem of the valve stem assembly into the guide hole of the
body, set the spring in place on the valve stem assembly
and insure that spring seats in the guide socket inside the
cover. Install the four screws. The last one or two turns of
the screws will have greater resistance to turning. This is
the self locking feature of the screw. Damaged screws
should be discarded and replaced with new ones.
* 6. Install the valve assembly in the facepiece and insure that
the nut is firmly tightened.
7. Don mask and test for leaks as per the apparatus
instructions.
8. Before storage, the valve must be forced air dried. Do
this by disconnecting the breathing tube from the facepiece,
hold the end of the tube over the exhalation valve inside the
facepiece and blow air through the valve, by opening the BY
PASS valve slightly. Make sure air passes through the valve
for about one-half minute.
Storage: Store the mask in the plastic bag furnished with the
apparatus.
* Applies to the Ultravue facepiece only. For Clearvue
facepiece tighten 57909 Clamp around valve body.
IMPORTANT NOTE: When you install the valve assembly
in the Ultravue facepiece (Step 6), it is recommended
that you rub a small amount of Never-Seez compound
(Part Number 29527) on the threads of the valve.
Manufactured by
MSA
MINE SAFETY APPLIANCES COMPANY
PITTSBURGH, PENNSYLVANIA, U.S.A., 15208
TAL 282 (L) REV. 3
469203
Figure 6
Figure 5
Figure 4
Figure 3
