5
Using the Respirator
WARNING!
• Do not use an Abrasi-Blast Respirator if air contaminants are not known, immediately dangerous to life or health, or you
cannot escape without respirator protective equipment. The supplied-air Abrasi-Blast Respirator configuration does not
afford respiratory protection if the air supply fails.
• Do not use the Combination Duo-Flo configuration of the Abrasi-Blast respirator in atmospheres containing less than
19.5 percent oxygen, in atmospheres exceeding the limits for which the filter will provide protection.
• When used in Combination Duo-Flo configuration, the respirator must be used in conjuction with the proper chemical or
particulate canister/cartridge(s) for protection against specific contaminants. If you cannot determine the filter
canister/cartridge(s) used with this device is designed for the contaminant, or if you do not know the identity of the
contaminant, do not use the device in the Combination Duo-Flo configuration.
• Do not use in Combination Duo-Flo configuration when concentrations of contaminants are unknown.
• Do not use in Combination Duo-Flo configurations when appropriate exposure limit (PEL, EL, TLV, etc) is not known.
• Do not use near flame or hot metal, because hood material may burn. The hood material is classified as self-
extinguishing as required by Federal Standard 191, Method 5910.
• Do not contact organic-based solvents which may attack the hood material, air-supply hose or other plastic
components. A partial list of such solvents is as follows:
○ Benzene
○ Methyl Ethyl Ketone (MEK)
○ Ethylene Dibromide
○ Tetrahydrofuran (THF)
○ Ethyl Acrylate
○ Acetonitrile
○ Isobutyl Amine
○ Petroleum-Based Solvents
• Return to a safe atmosphere and discard the respirator immediately if discoloration, crazing, blistering, cracking or other
deterioration of the hood material, air-supply hose or other plastic components is observed.
• Do not wear eyeglasses under the facepiece. The temples or sidebars on eyeglasses will prevent an air-tight seal. If you
must wear eyeglasses, install the spectacle kit.
Failure to follow these warnings can result in serious personal injury or death.
5.1
Changing Cover Lenses
The outer cover lens should be removed when it gets dirty or scratched. To change the cover lens, grasp one of the pull-tabs on
the corners of the lens and pull straight out. The last protective lens in the cartridge has no pull-tab. It is to be kept over the
primary lens to protect its surface from abrasive materials.
NOTICE
Do not remove a lens cartridge during abrasive work. The primary lens may be polycarbonate and will scratch easily. If the
primary lens is damaged, the entire lens housing assembly must be replaced.
US
Abrasi-Blast Respirator
20
5 Using the Respirator
