3.3.1
Visually inspect complete apparatus for worn or aged parts and damaged components.
3.3.2
Basic cylinder inspection shall include:
A. Inspect gauge for damage.
B. Inspect cylinder for mechanical damage (cracks, dents, gouges) or signs of heat or
chemical damage. (Refer to CGA C-6.2 "Guideline for Visual Inspection and
Requalification of Fiber Reinforced High Pressure Cylinders" for all wrapped cylinders.)
C. Check that hydrostatic test date on cylinder is current.
D. Check that cylinder valve threads are not damaged.
E. Check that the valve body is not bent.
F. Check that the burst disc outlet is clean and free of debris.
G. If any item listed above is noted, depressurize cylinder to a slight positive pressure,
tag, and take out of service.
3.3.3
Connect the CDV to the FRONTIER facepiece or hood by screwing the CDV hand wheel into
the hood or facepiece. Make sure the manual red bypass knob is in the closed position, i.e., fully
turned clockwise.
3.3.4
Open the cylinder valve slowly by turning the cylinder valve knob counter-clockwise to the
fully open position. Hold facepiece tight to your face. The whistle alarm should activate and then shut
off. There should be no air flow from the facepiece. If air is flowing, check that bypass is closed. For
the First Breath CDV, inhale to activate air flow.
3.3.5 CHECK CYLINDER PRESSURE:
Remote cylinder pressure gauge should read above 90% of maximum rated pressure. If the
cylinder pressure reads 90% or less, refill or replace with a fully charged cylinder (Figure 6).
3.3.6 POSITIVE PRESSURE CHECK FOR FACEPIECE:
While holding the facepiece tight to your face, insert two fingers between the facepiece and face.
Gently lift the seal away from the face and ensure a good outward flow of air (Figure 7). Reseal the
facepiece and hold your breath for three seconds. There should be no sound of air flowing. Open the
optional bypass knob and check for a constant air flow. Close bypass knob.
3.3.7 POSITIVE PRESSURE CHECK FOR HOOD:
insert two fingers between the seal and neck. Gently lift the seal away from the neck while pulling
the oral/nasal cup away from the face (Figure 8). A good outward flow of air should be felt. Reseal
the hood and stop breathing for three seconds. There should be no sound of air leaking from the
CDV. Open the bypass knob and check for a constant flow. Close the bypass knob.
3.3.8 LOW PRESSURE ALARM TEST:
Close cylinder valve and gradually reduce the pneumatics by opening the bypass to slowly vent the
air. Check to see that the whistle "End-of-Service" alarm activates as the needle enters the red sec-
tion of the gauge (1/4 marking) (Figure 15).
11
Ensure that only a 2216 psi cylinder is used with low pressure pneumatics and a 4500 psi cylinder
is used with high pressure pneumatics.
WARNING
Summary of Contents for FRONTIER Series
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