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VISUAL INSPECTION AND FUNCTIONAL TESTS

tight (no tools).

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 pre-
sent, replace the hose.

8. Cylinder and Valve Assembly

a. Air mask cylinders should be recharged as soon as

possible after use. Cylinders should not be stored
partially charged for two reasons:
• If used without recharge, the service life 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 service pressure), recharge it before storage.
Cylinder air must be at least CGA Quality
Verification Level (Grade) D respirable air. In fire ser-
vice applications, MSA recommends 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 damaged return it to an MSA Service Center.

e. Check the hydrostatic test date on the cylinder

approval sticker located on the cylinder neck.
Fiberglass composite 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 indi-
cate 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 reg-
ulations require that composite cylinders be retired from
service after the fifteenth year. This does not include cylin-
der valve assemblies that may be reused. Steel and alu-
minum cylinder service life is indefinite if proper inspec-
tion and hydrostatic test procedures 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 pres-

sure 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 signs of damage due to heat or chemical related
damage.

c. Inspect all harness components for cuts, tears,

abrasions, or signs of damage due to heat or chem-
ical related damage.

10. Rescue Belt and Rescue Belt II

a. Detailed inspection instructions for the Rescue Belt

and Rescue Belt II are provided under separate
manuals (P/N 10052748 for Rescue Belt, P/N
10115063 for Rescue Belt II).

11. ExtendAire II System

a. Inspect the hose for any visible signs of damage.
b. Inspect the hose connections. Ensure that the

hoses are properly secured.

c. Inspect the pressure relief valve. Ensure that the

relief holes are clear and free of debris and other
contaminants. Ensure that the pressure relief valve
is properly secured.

d. Inspect the quick-connect fittings. Ensure that the

openings are clear and free of debris and other con-
taminants. Ensure that the quick-connect fittings are
properly secured.

e. Inspect the dust cover for rubber deterioration, dirt,

cracks, tears, or tackiness.

f. Check both lens covers for dirt or moisture. If pre-

sent, refer to the Cleaning and Disinfecting section
(item 3e).

g. Inspect pouch and hose restraint components for

cuts, tears, abrasions, or signs of damage due to
heat or chemical damage. Ensure that the pouch is
properly secured and the hose and manifold are
properly stored.

12. FireHawk M7 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 M7 Control Module.

e. Check both lens covers for dirt or moisture. If pre-

sent refer to the Cleaning and Disinfecting section,
(item 3e).

13. FireHawk M7 Power Module (integrated PASS version)

a. Inspect the FireHawk M7 Power Module housing for

external cracks and ensure that the FireHawk M7
Power Module, battery tube, and cylinder stop are
securely attached to the backplate.