North FRONTIER Series, Инструкция пользователя

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4.1.6 Attach the CDV into the facepiece or hood (Figures 13 and 14).
4.1.7 Rotate and pull outward to ensure CDV is not cross threaded into the facepiece or hood.
4.1.8 Open cylinder valve slowly by turning counter-clockwise to the full open position. The whistle
should activate when opening the cylinder valve. Air should be flowing out of the CDV.
4.1.9 TO PUT FACEPIECE ON:
Adjust the headstrap by pulling back on the lower straps first before adjusting the top straps. On
CDV's with First Breath, inhale to activate airflow.
TO PUT HOOD ON: Place your hands inside the neck seal opening and spread apart. Do not use
your fingertips to spread neck seal apart as the fingernails may puncture the seal. Also note, sharp
rings can tear the neck seal. Place your chin into the opening and pull the hood over your head.
Adjust the oral/nasal cup over your mouth and nose and tighten the side straps by pulling forward.
Ensure the neck seal lays flush against your neck and that no hair or other items pass between you
and neck seal. On CDV's with first breath, inhale to begin airflow.
4.1.10 The whistle will shut off once a seal is achieved.
4.2 SAFETY CHECKS
4.2.1 POSITIVE PRESSURE USER SEAL CHECK:
With cylinder valve open, breathe normally. Insert two fingers between your facepiece and face.
Gently lift the facepiece seal away from your face and ensure a good outward flow of air, showing
that the facepiece pressure is positive. Reseal facepiece and hold your breath for 3 seconds. There
should be no sound of air leaking, and you should not sense any airflow in the eye region of the
mask.
13
NOTE
For hoods equipped with a First Breath CDV it is necessary to push the hood slightly towards your
face (sealing the oral/nasal cup against your face) before your first inhaled breath. A quick rush of
air should be heard when airflow is activated.
Do not over tighten the facepiece. Doing so may cause discomfort, facepiece deformation and
leakage.
CAUTION
These safety checks MUST be performed before entering a hazardous area. Failure to perform
these checks may result in respiratory injury or death.
WARNING