DONNING AND USE
DONNING
Note: Refer to the facepiece user instructions for face-
p
iece donning instructions.
• Donning, doffing, and obtaining and checking for a
p
roper facepiece seal must be done in an area
known to be free of contaminants. The user must
have practiced this procedure before attempting to
use the respirator for respiratory protection.
• When wearing an Ultra Elite Facepiece, ensure the
breathing tube connection is parallel to the user’s
shoulders.
• When wearing a Millennium Facepiece, ensure that
the breathing tube goes around the body on the
same side as it is connected to the facepiece
breathing tube inlet.
Failure to follow this warning can result in serious per-
sonal injury or death.
Donning the Blower Assembly
1. Examine the breathing tube assembly to verify that it
is properly tightened to both the facepiece and the
blower assembly.
2. Examine the cartridges to verify that they are properly
installed to the blower assembly.
3. Turn the switch to the “ON” position to confirm that
the battery is installed and the blower assembly is
working.
4. Turn the switch to the “OFF” position.
5. Don the waistbelt with the blower assembly with the
C420 PAPR blower outlet located at the top of the
unit.
6. Fasten the buckle and
adjust the waistbelt.
The C420 PAPR blower may be worn in multiple positions
on the waist. When the respirator is donned, ensure:
• that the breathing tube is not excessively tight. During
use there should be no movements that can cause the
breathing tube to become tight and pull the facepiece
away from the face which could break the facepiece
seal.
• that the breathing tube is not excessively loose.
During use there should not be enough slack in the
breathing tube such that it could get caught on some-
thing and pull the facepiece away from the face which
c
ould break the facepiece seal.
I
f either one of these conditions is present, one of the fol-
lowing actions must be taken:
• change the position of the blower on the waist to cre-
ate or remove slack in the breathing tube.
• use a different length breathing tube to create or
r
emove slack in the breathing tube.
Note: The C420 PAPR may be used with either a standard
(PN S-30116) or a long (PN S-30118) breathing tube.
Note: Use a buddy, if the situation permits, to ensure that
the C420 PAPR is donned correctly (the head harness is
in place, the blower is positioned correctly, the waist belt
is secure, and all components are properly assembled
and tightened).
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. Close off the inlet side of both cartridges by placing
palms of the hands over cartridge inlets and press
firmly to seal inlets.
3. Inhale gently and hold breath for 10 seconds. If the
seal is good, the facepiece will collapse and remain
collapsed against face. Remove hands and breathe
normally.
4. If the facepiece did not remain collapsed during the
test, or any leakage is noticed, check each cartridge
or breathing tube connection for looseness or cross
threading. Perform Negative Pressure Seal Test again.
5. If this does not correct the leak, the facepiece will not
provide protection. If the leakage is from the face seal,
a different size mask may be tried. If other than face
seal leakage is detected, the cause of the leak must
be corrected before performing another test.
Note: Protective clothing and headwear, if used, must be
arranged so that it does not interfere with the fit of the
facepiece or restrict airflow to the cartridges.
This device may not seal properly with your face if you
have a beard, gross sideburns or similar physical
characteristics (see ANSI Z88.2). An improper facial
seal may allow contaminants to leak into the face-
piece, reducing or eliminating respiratory 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
13
TAL 706 (L) Rev. 2 - 10072074
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