Installing The Extendaire Ii - MSA ExtendAire II Instrucciones Para El Usuario

Installing the ExtendAire II Intermediate Pressure Accessory
Kit
The following installation instructions assume that the air mask being
upgraded is a FireHawk M7 Air Mask or a FireHawk M7 Responder ® Air
Mask. The ExtendAire II upgrade kit may be installed on AirHawk ® II
Industrial Air Masks or NFPA 1981, 2002 Edition compliant air masks.
The upgrade steps are the same for all air masks except where
specifically noted.
ExtendAire II Upgrade Kit includes:
• Pouch
• ExtendAire II Manifold and Intermediate Pressure Hose and Dust
Cover
• Hose Restraint Strap
• Two (2) Screws
• Instructions
Required Tools:
Phillips Screwdriver
Preparing the Air Mask
NOTE: Depressurize the air mask before installing the ExtendAire II
Intermediate Pressure Accessory Kit.
• Close the cylinder valve.
• Squeeze the shut-off button.
• Open the bypass.
• Disconnect the Audi-Larm™ Audible Alarm.
"
DO NOT attempt to maintain or repair the air mask while
pressurized. Attempting to disassemble a pressurized air mask can
cause parts to become airborne or swing at very high rates of speed.
Failure to follow this warning can result in serious personal injury or
death.
1. Remove the cylinder from the backplate.
2. Remove the pull-strap from the
friction buckle on the left
shoulder strap.
MSA 419 (L) Rev. 5 - 10110648
ExtendAire II Installation
WARNING
3. Angle the left tri-bar and remove
it from the backplate.
4. Remove the center tri-bar(s) from
lumbar pad or rescue belt if
present.
For AirHawk II or NFPA 1981, 2002 Edition compliant
air masks: Remove the single center tri-bar for standard lumbar
pads. It is not necessary to remove any backplate connections for
a swiveling lumbar pad.
Installation
1. With the back of the pouch facing up, feed straps through
backplate (front to back) using the side handle and left tri-bar slot
in backplate.
2. Loop the straps back through
the plastic hardware on the back
of pouch. Be sure that the sewn
tucks on the web ends are
completely through the plastic
hardware.
3. Lay the air mask so that the cylinder band faces up.
4. Remove the center tri-bar(s) from
the lumbar pad or rescue belt, if
present.
4