G1 Extendaire Ii System - MSA G1 SCBA Operating Manual

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G1 ExtendAire II System

WARNING!
Do NOT connect the ExtendAire II system if there is any possibility that the environment contains

a CBRN warfare agent. The ExtendAire II system is not approved for connection in atmospheres
containing CBRN warfare agents.
The ExtendAire II system has UEBSS quick-connect fittings. Do not try to connect Snap-tite quick-

connect fittings to UEBSS quick-connect fittings. Snap-tite and UEBSS quick-connect fittings will
not operate correctly together.
Do NOT install or try to use any hose assembly or fitting other than those supplied by MSA for the

ExtendAire II system with UEBSS fittings.
In accordance with NFPA 1981-2018, the MSA G1 SCBA has UEBSS fittings that make it possible

to connect to a UEBSS on other manufacturers' SCBAs. Approval under the NFPA 1981-2018
standard does not require testing with other manufacturers' devices. When the UEBSS fittings are
used to connect the MSA G1 SCBA with another manufacturer's device, MSA does not guarantee
or warrant the performance of either the MSA G1 SCBA or the other manufacturer's SCBA.
Users must be trained in the operation of ExtendAire II system in accordance with a training

program conforming to NFPA 1404, Standard for Fire Service Respiratory Protection Training, and
NFPA 1500, Standard on Fire Department Occupational Safety and Health Program, before any
attempt to use such equipment in an emergency situation.
Users are responsible for developing standard operating procedures for use of the ExtendAire II

system.
Use this emergency escape breathing system only for life-threatening emergencies and simulated

training exercises. Consider all other adequate means of escape before using this device.
Use of the ExtendAire II system in either donor or receiver mode changes the use of the SCBA to

Escape Only. The donor and receiver must immediately return to fresh air.
During use, the air supply and consequentially the remaining service time are decreased by

approximately half. Before connecting two users, make sure the donor's air supply is sufficient for
both users to escape. Otherwise, do not use the system.
Do NOT use the system if the donor's low-pressure warning device is in alarm. Use of the system

at this time can result in insufficient air for both users during escape.
Before disconnecting the EBSS, make sure that the cylinder valves for both the donor and receiver

are open.
Use extreme care while the air masks are connected. Mobility and range of motion are limited

when donor and receiver air masks are connected.
Keep slack in the air lines. Do NOT pull on the hoses. Pulling on the rescue hose to the interme-

diate pressure hose can cause the hoses to separate from the fittings and result in air leaks.
If users cannot follow the previous instructions, or to provide increased escape protection, use the

Quick-Fill system. Use of the Quick-Fill system maintains approval during transfilling procedures
and has fewer safety risks.
Failure to obey these warnings can result in serious personal injury or death.
The ExtendAire II system lets two users connect and share intermediate-pressure air. The
ExtendAire II system includes a manifold, hose assembly, and pouch. In accordance with the require-
ments of NFPA 1981, Standard on Open-Circuit Self-Contained Breathing Apparatus (SCBA) for
G1 SCBA 2018 Edition
G1 ExtendAire II System
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