2
Description
You may wish to make a permanent record of your complete system as an aid for ordering replacement parts. Use the listing
below to keep a record of your configuration in this manual.
Assembly
Part Number
Hood
Cover Lens
Facepiece
Flow Control Valve
Air Supply Hose
During abrasive blasting operations, the facepiece lens is protected by two to four flat-glass cover lenses. Each cover lens is
removed by two pull-tabs when it becomes so scratched that vision is reduced. Respirator approval requires the use of the
proper length of approved air-supply hose, approved fittings, and a respirable air source.
When using the Duo-Flo Respirator, the user breathes through the filter until connecting the air-line. The suppliedair mode of
operation may be used for long periods of time without depleting the filter. The air-purifying mode of operation also may be used
for extended periods of time when an air source is not available. During use, the respirator remains in the supplied-air mode of
operation so long as the user is connected to an air-line air source. The air-purifying mode of operation is entered
“automatically” if the air-line air source is disconnected or lost for any reason.
2.1
All Configurations
Constant Flow Adjustable Valves
Adjustable valves allow the user to vary air flow within NIOSH-required flow rates.
Duo-Flo
The Duo-Flo valve, used in conjunction with the Ultra filter (P/N 816255), enables the user to enter and escape from
contaminated atmospheres without using the air-line air supply.
2.2
Required Tools
Abrasi-Blast Respirator systems may be assembled with standard tools and materials following good work practices. These
assembly tips may help:
1. All tapered pipe connections should be wrapped with pipe sealing tape (applied one thread back from the end) before
assembly.
2. Open-end wrenches and slip-joint pliers should be used to tighten all threaded connections, unless specifically noted
otherwise.
3. Test all threaded connections under pressure with a commercial leak-test solution or soapy water. If a leak is detected,
locate the source and correct it before using the respirator.
9
Abrasi-Blast Respirator
US
2 Description
