due to: “operator failure”- incorrect programming… which, as controllers become more sophisticated in their abilities, so does their proper programming process- and possible errors. Also, verify that environmental sensors are not incorrectly overriding system operation. Look for vandalism, rodents chewing wires, site construction or digging activities. Were various “improvements” done to the system correctly? Look for post-installation add-ons. System owners and unskilled irrigation installers are notorious for installing or improving systems incor-
HERFORT
G o l f
rectly. Overall, there is a whole host of ‘non-product and component’ trouble causing issues out there. You will always run into a “Man, I’ve never seen this one before” issue. Don’t assume anything. In this “Figure A” scenario, our “whole system” observations checks out OK. (2) Controller: Actual reading for the controller is 24 volts AC, which meets manufacture’s recommendations. Note that a conventional controller output can vary between 19 and 28 volts AC. If we are not getting this expected voltage, we would want to check the voltage from the
NORBY
C o u r s e A r c h i t e c t s
Phone: 952.361.0644 Fax: 952.361.0645 e-mail: golfnorby@earthlink.net web: www.herfortnorby.com
Page 35