Charging Cylinders - MSA FireHawk M7XT Fonctionnement/Entretien

NOTE: Be sure to replace the cylinder with a fully charged one.
Complete Inspection and Cleaning and Disinfecting
Procedures outlined in this manual. Ensure that the complete
SCBA is clean and dry. Ensure that facepiece head harness
straps and harness adjustment straps are fully extended. Place
the complete air mask in the storage case or suitable storage
location so that it can be easily reached for emergency use.
(See storage instructions.)
CHANGING THE CYLINDER
DO NOT drop the cylinder or bump the cylinder valve knob.
An unsecured cylinder can become an airborne projectile
under its own pressure if the valve is opened even slightly.
Misuse can result in serious personal injury or death.
1. Ensure there is no pressure in the system before replacing
a cylinder.
2. Close the cylinder valve.
3. Turn the Firehawk Regulator bypass counter-clockwise
until air no longer discharges from the regulator.
4. Close the bypass by turning the knob clockwise.
5. Disconnect the Audi-
Larm Alarm coupling
nut.
6. Lift and turn the latch wing to loosen the cylinder clamp.
7. Slide the empty cylinder out of the carrier and install a
fully charged cylinder. Be sure that the adjustable cylinder
band and latch is in the proper slot before inserting a new
cylinder.
8. Slide the fully charged cylinder into the carrier, with gauge
facing out. Turn the latch wing clockwise 180 degrees until
it stops. Fold the latch wing toward backplate, locking
latch wing in place.
NOTE: Be sure to completely tighten the latch wing each time
a cylinder is installed.
9. To check that the cylinder is secure, place one hand on the
backplate and grasp the cylinder valve with the other hand.
Try to pull the cylinder and valve down and out away from
the carrier. Make sure that the band and latch holds the
cylinder securely in the carrier.
REMOVING THE AIR MASK
WARNING
NOTE: If the cylinder feels loose, remove the cylinder and
check that the latch engages with the proper slot on the band.
Re-install the cylinder and ensure that the latch wing is fully
tightened and flipped over. Do not use the air mask if the
cylinder is not held securely in the carrier.
10. Before installing the Audi-Larm Alarm, check that the o-
ring inside the Audi-Larm Alarm coupling nut is present
and free of damage. If the o-ring is damaged, it must be
replaced before the alarm is used.
11. Thread the Audi-Larm
Alarm coupling nut on to
the cylinder valve thread
form and hand-tighten
(no tools).

CHARGING CYLINDERS

A lightweight SCBA cylinder can become airborne solely under
the thrust of air from an inadvertedly opened cylinder valve. If
a cylinder is removed from a horizontal shelf by grasping the
handwheel, the weight of the cylinder can cause the cylinder
to rotate downward causing the valve to open slightly.
• Never carry a cylinder by the handwheel.
• Avoid dropping the cylinder or bumping the handwheel.
• Use the handwheel only to open and close the cylinder
valve.
A valve could partially open causing the cylinder to become
an airborne projectile under its own pressure and result in
serious personal injury or death.
1. Remove from service if cylinder shows evidence of expo-
sure to high heat or flame: e.g., paint turned to a brown
or black color, decals charred or missing, gauge lens
melted, or elastomeric materials distorted.
2. Use this device only after receiving proper training in its
use. Use in accordance with this label and MSA appara-
tus instructions.
3. To maintain NIOSH approval, the cylinder must be fully
charged with respirable air meeting the requirements of
the Compressed Gas Association specification G-7.1
1989 for Quality Verification Level (grade) D air or equiv-
alent specification. In fire service applications, MSA rec-
ommends breathing air quality in accordance with NFPA
1989.
4. DO NOT use unless the cylinder is filled to the maximum
working pressure.
27
WARNING
WARNING
MSA 314 (L) Rev. 2 - 10128861