Thanks to Murphy’s Law, it seems that right when you need your sprinkler system the most is also when it is most likely to break down. Understanding the basics of how your sprinklers work can help you use them more efficiently and know how to spot potential problems. Unlike changing the oil in your car’, there isn’t a whole lot of preventive maintenance you can perform on your sprinklers. However, routine inspections are extremely important.
A typical sprinkler system starts at the backflow device, which is usually in a large box located a few feet from your water meter. There are 2 handles here which are used to turn the water off to the sprinklers without affecting the water to your house. Silt often accumulates around this valve and the handles corrode, making it difficult to turn off the water in an emergency. We recommend cleaning out the silt once a year and replacing your handles with stainless steel handles. Stainless handles will last forever.
Your control valves are located throughout the yard and have an electric solenoid and rubber diaphragm. These parts fail over time, the wire splices may corrode, and fire ants eat the insulation off the wires. If a valve is not coming on it is often an electrical problem. If it sticks on and runs continuously, it is usually a bad diaphragm or debris may have lodged in the valve. In most cases, we rebuild the valve with all new components, or replace the valve entirely if there is internal wear or other issues.
We typically use spray heads for patterns of 4 ft up to 15 ft, rotors for patterns of 15 ft to 40 ft, drip irrigation for ornamental beds or pots, and bubbler heads for trees, large plants, or large pots. Pop-up sprays and rotors have seals that harden with age and leak or prevent the head from lowering after it pops up. This is the main reason heads get broken by mowers. Properly installed, a head that is working properly cannot be hit by a mower. If you see a lot of water pooling around a head when it is running it may have a bad seal. Spray nozzles also become clogged, and heads settle so that they are crooked, too low, or too high. Drip is notorious for being damaged by digging in beds, and rodents also love to chew on drip. Correcting these issues is all part of routine maintenance.
Your controller is the the brain of the system, and most of today’s controllers have sophisticated settings that allow you to optimize how and when you apply water. Like any computer, they may be damaged by power surges, lightning, or gremlins. But what is the first thing you always check when your controller isn’t working? The electrical outlet! Plug something else in and make sure you have electricity there. If so, then you can call us to come look for the gremlins.
