7
AIR SYSTEMS
For air-powered tools to work their best, the air
supply system must be properly installed and
maintained regularly. A drawing in this section
shows a properly installed air supply system.
Handy checklists for installing and maintaining
air supply systems follow.
Indoor Air System Installation
-Be certain that:
•
All pipes supplying air have a large enough
inside diameter to ensure adequate air supply.
•
The main supply pipe slopes down, away from
the compressor (1/16 inch per foot).
•
Air storage is provided along lengthy air lines.
•
Pipe line branch outlets are at the top of the
main pipe line.
•
Cutoff valves are provided at each branch pipe
line throughout the system.
•
Water legs extend from the bottom of each branch
line.
•
A refrigerant-type dryer is installed on the system.
•
Air hoses are kept as short as practical.
•
A regular maintenance program is followed.
Outdoor Air System Installation
-Be certain that:
•
A moisture trap and a
fi
lter/regulator/lubricator are
installed at the compressor.
•
Air hoses and
fi
ttings are large enough so that air
fl
ow is not restricted. Minimum hose size is 3/8
inch ID with 1/2 inch ID hose used for any
application over 25 feet.
•
Air hoses are not longer than 150
feet.
•
The air system is lubricated regularly.
•
A regular maintenance program is followed.
Filter/Regulator/Lubricator Units
Filter/regulator/lubricator units that can supply
enough air and protection for
Duo-Fast
®
tools
must meet the following speci
fi
cations:
•
Minimum 3/8 inch NPT port size .
•
50 micron or
fi
ne
fi
lters.
•
Regulated pressure from zero to 120 psi.
•
Lubricators designed for low or changing
air
fl
ow.
