• A drain should be available close to the manifold. The unit discharges approximately twice as much
water as chemical pumped. The drain line should be kept short, or expanded to a larger size for runs
longer than fifteen feet.
• It is recommended that the unit be installed indoors. The unit as well as plumbing fittings should be kept
out of direct sunlight.
Safety
• Do not permit access by children or pets. Most chemicals used to treat water can be dangerous.
• Provide and use safety equipment such as goggles, gloves, aprons, or anything common sense or
OSHA requires.
• Store protective clothing and accessories in a location away from the injector so that they may
be donned before approaching the equipment.
• Check with the manufacturer of the chemical for safety precautions for specific chemicals.
• Label chemicals and keep a supply of antidotes, neutralizing agents, and safety precautions handy. If
feeding acid, keep some baking soda (powdered and solution) nearby.
• If feeding dangerous or corrosive chemicals, you should attach a drain line to the bleed valve on the
injection point fitting (standard capacity pumpers) or VMC module (high capacity pumpers) which drains
into a chemical resistant container.
• A chemical resistant container should be placed directly beneath the manifold and pumpers.
• Protect the injector from corrosive vapors with adequate ventilation. Corrosion can sometimes attack
diaphragms from the back side, resulting in premature failure.
Water Hammer
• Water hammer can generate pressures up to 500 psi or more! This puts stress on the injector (and on
your entire water system), but it is especially destructive to diaphragms.
• Water hammer can be a serious problem in installations with long pipe runs.
• Solenoid valves can cause water hammer.
• If water hammer could be a problem for your installation, install a suppressor such as an accumulator
(captive air device) near your injector.
Water Quality
Solids in your water supply act as abrasives and will wear away the water measuring mechanism. If you
have problems with solids, install a filter upstream of the injector and place pressure gauges before and after.
You can use the difference in pressure readings to tell when the filter is plugged up.
Installation
1. Read and understand all the considerations and warning discussed in this guide.
2. Refer to the installation drawing in this guide for information in assembling your system. If you are
unfamiliar with plumbing or working with the piping materials chosen, hire a professional plumber to do
the installation.
3. IMPORTANT! Most plumbers are unfamiliar with our equipment and should be monitored to see that
they are following our installation recommendations.
4. The injector can be installed into several different pipe sizes. Consult a professional plumber or irrigation
service to determine proper size for your application.
5. The water line pipe size DOES NOT have to match the pipe size of the water meter. The water meter is
often a smaller diameter than what is used in the rest of the irrigation system.
6. Plan the routing of the pipe for the injector system in advance.
7. Properly support all piping making sure there is not strain on any plumbing fittings.
8. Build or choose an appropriate place to house the injection system.
9. Begin at the upstream end and install all piping necessary for the injector system.
10. Start by installing a backflow preventer on the water supply line.
11. Next install a captive air tank.
5
To Next Page
Loading...
Need help?
General