MSA FireHawk M7XT Fonctionnement/Entretien page 8

VISUAL INSPECTION AND FUNCTIONAL TESTS
7. High Pressure Hose
a. Inspect the high pressure hose between the Audi-Larm
Alarm and the PR14 First Stage Regulator. Look for cuts
or severe abrasions. If damage is present, replace the
hose.
8. Cylinder and Valve Assembly
a. Air mask cylinders should be recharged as soon as pos-
sible after use. Cylinders should not be stored partially
charged for two reasons:
• If used without recharge, the available service time of
the air mask is reduced.
• The cylinder burst disc vents excess pressure if a
full cylinder is over exposed to fire or heat. If the
cylinder is not full, it may be damaged before the
burst disc vents.
b. If the cylinder is less than FULL (within 10% of rated ser-
vice pressure), recharge it before storage. Cylinder air
must be at least CGA Quality Verification Level (Grade) D
respirable air. In fire service applications, MSA recom-
mends breathing air quality in accordance with NFPA
1989.
c. Inspect the cylinder valve for signs of damage. The valve
may be opened slightly to ensure it operates properly.
Be sure to fully close the valve.
d. Inspect the cylinder body for cracks, dents, weakened
areas, corrosive agents causing the fibers to break or peel,
or signs of heat-related damage. If the cylinder is dam-
aged return it to an MSA Service Center.
e. Check the hydrostatic test date on the cylinder approval
sticker located on the cylinder shell. Fiberglass compos-
ite cylinders must be tested every three years. Carbon-
wrapped and aluminum cylinders must be tested every
five years. Aluminum cylinder life is indefinite if proper
inspection and hydro test procedures are followed and
they indicate that the cylinder may remain in service.
f. Ensure the needle and gauge face on the cylinder valve
gauge are clearly visible and that the gauge stem is not
bent.
It is also essential that the required inspections and tests be
performed on all air mask cylinders in accordance with
Department of Transportation (DOT) regulations. DOT regula-
tions require that composite cylinders be retired from service
after the fifteenth year. This does not include cylinder valve
assemblies that may be reused. Aluminum cylinder service life
is indefinite if proper inspection and hydrostatic test proce-
dures are followed and they indicate that the cylinder may
remain in service. Contact an MSA distributor or sales associate
for more information regarding this policy.
NOTE: ANSI Z88.5 recommends checking cylinder pressure
weekly. For maximum safety the cylinders should be stored full
or empty (pressure above ambient but less than 100 psi).
9. FireHawk M7 Carrier and Harness
a. Operate the latch wing on the cylinder band to ensure
that it opens and closes properly and that it holds the
cylinder securely. If the cylinder band and latch is
locked, the latch wing should not turn.
b. Inspect the back plate for cracks, weakened areas, or
MSA 314 (L) Rev. 2 - 10128861
signs of damage due to heat or chemical related dam-
age.
c. Inspect all harness components for cuts, tears,
abrasions, or signs of damage due to heat or chemical
related damage.
10. Rescue Belt II
a. Refer to care and use instructions (P/N 10115063).
11. FireHawk M7XT Control Module (integrated PASS version)
a. Inspect the gauge hose and power cable for any visible
signs of damage.
b. Inspect for external cracks in the housing and ensure
the rubber cover is not damaged.
c. Ensure the buttons are not damaged or missing.
d. Ensure the gauge hose and power cable are securely
attached to the FireHawk M7XT Control Module.
e. Check both lens covers for dirt or moisture. If present
refer to the Cleaning and Disinfecting section, (item 3e).
12. FireHawk M7XT Power Module
a. Inspect the FireHawk M7XT Power Module housing for
external cracks and ensure that the FireHawk M7XT
Power Module, battery tube, and cylinder stop are
securely attached to the backplate.
b. Inspect the piezo emitters on both sides of the
FireHawk M7XT Power Module. Ensure that the emitter
covers are not obstructed by dirt or debris.
c. Ensure that the power cable is securely attached to the
FireHawk M7XT Power Module. The fitting on the
power cable should not be able to be unthreaded by
hand.
d. Remove the cap from the battery tube. Ensure that the
o-ring is properly installed on the battery cap, if o-ring is
missing, it must be replaced.
e. Inspect the inside of the battery tube. Ensure that the
battery terminals are not corroded and that the tube is
free of moisture and debris.
f. Replace the battery cap on the battery tube.
13. Record Keeping
a. Following inspection, the date and initials of the
designated inspector should be recorded on an
inspection tag. A more detailed record of the operations
performed can be noted on an inspection and
maintenance log, available from MSA. When the
inspection data has been recorded, the air mask is ready
for use.
All repair and replacement of subassemblies must be carried
out by an MSA certified repair technician. Failure to follow
this warning will void NFPA and NIOSH certifications and
can result in serious personal injury or death.
FUNCTIONAL TESTS
Conduct the Following: Before Use, After Each Use, and
Monthly
1. Check that the Firehawk Regulator and facepiece can hold
a negative pressure.
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WARNING