2.3
Unpacking and Inspection
The Abrasi-Blast Respirator consists of the following sub-assemblies:
• hood
• facepiece
• breathing tube
• support belt
• collar
• lens housing assembly
• waist strap
• adjustable valve-connector or Duo-Flo adapter
• air-supply hose socket assembly
• cover lens cartridge
CAUTION!
Thoroughly inspect the respirator and all components when received and before using. Read and observe all NIOSH approval
limitation as they apply to using the Abrasi-Blast Respirator.
Failure to follow this caution can result in minor or moderate injury.
3
Assembling the Respirator
3.1
Respirator Assembly
Air-Supply Hose
The respirator can be used with a wide range of MSA air supply hoses, which can be interconnected up to a maximum length of
300 feet. A maximum of 12 sections of air supply hose may be used in making up the maximum working length of hose. The
coiled hoses are considered to be the indicated length, although actual extended lengths can be less than indicated. (Maximum
of one section of 8, 15, or 25 ft. of coiled hose or 6 sections of 50 ft. coiled hoses).
MSA also offers an inlet pressure-gauge assembly that enables a user to check pressure at the inlet of the MSA air-supply
hose, thus ensuring that the air pressure is within the NIOSH approved range. The gauge is supplied with a quick-disconnect
fittings to accommodate your particular air-line system.
Part numbers for various MSA air-supply hoses that can be used are listed in
WARNING!
• Particles and contaminants can enter an airline respirator system when air-supply hoses are disconnected and/or
reconnected in a contaminated atmosphere. This could result in inhalation of contaminants. It is the user's responsibility
to determine the potential risk and take the necessary precautions, which may require prohibiting disconnection or
reconnection of air-supply hoses in a contaminated atmosphere. If in doubt DO NOT disconnect and/or reconnect.
• MSA air-supply hoses have various temperature limitations. Do not use when inlet air-temperature exceeds the limits
specified for each hose material.
• Check all hose connections to be sure fittings are secure. This must be done to ensure a continuous flow of air.
• Do not use non-locking quick-disconnects to interconnect air-supply hoses. Use only the threaded connector (3/4-16
UNF) or the locking type quick-disconnects listed.
Failure to follow these warnings can result in serious personal injury or death.
US
Abrasi-Blast Respirator
10
3 Assembling the Respirator
