... walk of the lawn. During a hot dry summer, a lot of lawn damage can be done in a few days if the irrigation is not working. ... Weekly: Walk lawn and look for any signs of a system, zones, or individual heads that do not work. ... Electrically operated valves called asolenoid valvesa turn on the different irrigation zones. Electricanbsp;...
|Title||:||Manager's Guide to Preventive Building Maintenance|
|Publisher||:||The Fairmont Press, Inc. - 2009|