Installation
Air-Powered Pumps
•Reference numbers and letters in parentheses in the text refer to numbers and letters in the illustra- tions.
•FIG. 2, page 9, shows a typical installation of an
•Be sure all accessories, including air lines and fluid lines, are adequately sized and
•Use only electrically conductive hoses. Fluid hoses must have spring guards on both ends.
Air Line Accessories
Install the following accessories as shown in FIG. 2, using adapters as necessary.
A bleed type master air valve (J) is required to help reduce the risk of serious injury, including fluid injection and splashing of fluid in the eyes or on the skin, and injury from moving parts if you are adjusting or repair- ing the pump.
The bleed valve shuts off the air to the pump and relieves air trapped between this valve and the pump after the air is shut off. Trapped air can cause the pump to cycle unexpectedly. Locate the valve close to the pump.
•Bleed type master air valve (J) is required in your system to shut off the air supply to the pump. When closed, the valve will bleed off all air in the pump. Be sure the valve is easily accessible from the pump.
•Air regulator (H) controls pump speed and outlet pressure by adjusting the air pressure to the pump. Locate the regulator close to the pump, but upstream from the
•Air line filter (L) removes harmful dirt and moisture from the compressed air supply. Also, install a drain valve at the bottom of each air line drop, to drain off moisture.
•Air shutoff relief valve (M) isolates the air line accessories for servicing. Locate upstream from all other air line accessories.
•DataTrak: see the NXT air motor manual 311238 for DataTrak information.
Fluid Line Accessories
Install the following accessories as shown in FIG. 2, using adapters as necessary.
•Install a fluid shutoff valve at each valve drop, to isolate the valve and fluid accessories for servicing.
•Install a fluid drain valve near the pump fluid outlet, and at each valve station. The drain valves are required in your system to relieve fluid pressure in the displacement pump, hose and valve. Drain valves at the valve stations may be mounted in the base of a fluid regulator, using an adapter.
•Fluid regulator controls fluid pressure to the valve, and dampens pressure surges.
•Dispense valve dispenses the fluid.
•Valve swivel allows freer valve movement.
8 | 3A0096B |
