17
Visual Examinations
G1 Air-Purifying Respirator (APR)
US
4.3
APR Adapter
4.3.1 Single Port
Examine the APR adapter for cracks, scratches, deformation, or color changes.
Examine the adapter gasket (green), O-ring, and seal ring for wear or damage.
Remove the adapter cover to examine the exhalation valve. Make sure that the valve moves off the
seat and returns when released.
Examine the Rd 40 threads for damage.
4.3.2 Twin Port
Examine the APR adapter for cracks, scratches, deformation, or color changes.
Examine the adapter gasket (orange), O-ring, and seal ring for wear or damage.
Remove the adapter cover to examine the exhalation valve. Make sure that the valve moves off the
seat and returns when released.
Examine the bayonets for damage.
4.4
Air Filtration Cartridge(s)/Canister
4.4.1 Single Port Cartridge(s)/Canister
Examine the air filtration cartridge(s)/canister for cracks, scratches, deformation, or color changes.
Examine the Rd 40 threads for damage.
Look at the label on the air filtration cartridge(s)/canister to make sure that the shelf life has not
expired.
4.4.2 Twin Port Cartridges
Examine the air filtration cartridges for cracks, scratches, deformation, or color changes.
Look at the label on the air filtration cartridge to make sure that the shelf life has not expired.
