Irrigation System Maintenance
Proper maintenance of an irrigation system is required to insure efficient
uniform irrigations. Ensuring that the sprinklers and emitters are working
properly is a major part of irrigation system maintenance. The following items
help keep sprinklers operating properly.
- Keep heads properly aligned, leveled, and rotating.
- Clean plugged sprinklers, emitters and filters when needed (figure 7).
- Replace broken sprinklers, worn nozzles and emitters with appropriate parts
to maintain matched application rates and uniformity.
- Keep grass and plants away from sprinklers so spray patterns are not
disturbed by them. Raise sunken heads.
- After evaluation move, add or remove sprinklers and emitters to make a more
uniform application of water.
Visual inspection of the landscape provides a good indicator of irrigation
problems. Both stressed (hot spots) and over irrigated (soggy spots) areas
indicate irrigation problems. If the irrigation system is operating improperly
the following items should be checked.
- Water supply Check to see if all valves are opening and the system
has proper pressure.
- Controller and controller programming - Check the controller to make
sure it is operating and programmed properly.
- Field wiring Check to see if the automatic valves are receiving the
proper voltage and current, check for shorts in the wiring.
- Valves Use the controller to manually operate the valves through a
cycle to make sure they are operating properly. Adjust the flow control stems
on the valves if needed.
- Sprinkler heads Check for plugged, blocked or broken heads. Make
sure the sprinkler is rotating properly.
- Pipe and fittings Check for broken or plugged pipes and leaks.