NEGATIVE PRESSURE SEAL TEST
The Negative Pressure Seal Test must be
performed each time the facepiece is
donned. A good face-to-facepiece seal must
be verified before entering a hazardous
area.
Perform the test as follows:
1. Ensure respirator is assembled properly.
2. Block off canister/cartridge(s) inlet using
the palm(s) of the hand(s).
3. Inhale gently and hold breath for 10 sec-
onds. If the seal is good, the facepiece
will collapse and remain collapsed
against face. Remove hand and breathe
normally.
4. If the facepiece did not remain collapsed
during the test, or any leakage is
noticed, readjust straps and perform
Negative Pressure Seal Test again.
5. If this does not correct the leak, the face-
piece will not provide protection. If the
leakage is from the face seal, a different
size mask may provide a good seal. If
other than face seal leakage is detected,
the condition must be corrected before
performing another test.
DONNING THE BUTYL COATED NYLON
HOOD ACCESSORY
Ensure a complete Negative Pressure
Seal Test is conducted and passed.
Failure to follow this warning can result
in serious personal injury or death.
1. Position the hood so
that the lens opening
of the hood is facing
forward. Be sure that
the hood is right side
out with the draw string
exposed on the out-
side of the hood.
2. Fold the back panel of
the hood upward to
expose the inside of
the hood at the lens
opening. Next, in each
hand, grasp the sides
of the hood at the lens
opening.
Note:
If using the ClearCommand voice
amplifier accessory with the RI Connection,
place the cable through the lens opening of
the hood and move the ear phone toward
the lens of the facepiece. This will allow the
lens opening of the hood to slide over the
ear phone and amplifier.
3. Expand and slide the
lens opening of the
hood over the canis-
ter/cartridge(s) compo-
nent. Ensure the face-
piece seal is main-
tained.
DONNING
This device may not seal properly with
your face if you have a beard, gross side-
burns or similar physical characteristics
(see ANSI Z88.2). An improper facial seal
may allow contaminants to leak into the
facepiece, reducing or eliminating respi-
ratory protection. Do not use this device
if such conditions exist. The negative
pressure seal test must be conducted
and passed before each use. Never
remove the facepiece except in a safe,
non-hazardous, non-toxic atmosphere.
Failure to follow this warning can result
in serious personal injury or death.
LVG 322 (L) Rev. 13 - 10050775
18
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