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Old 08-29-2012, 02:06 PM
SoCalLandscapeMgmt SoCalLandscapeMgmt is offline
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Join Date: Sep 2007
Location: So. Cal.
Posts: 1,534
I've seen this as an issue only once in the 2000+ controllers that ever came into our shop for repair. There was nothing wrong with the controller but it was mounted right next to a large commercial cooling tower on a commercial site. The client moved the controller and the problem went away. I remember them covering this as a potential issue when I took both the Hardie and Rain Bird ASC training for controller repair. I know that the Rain Bird ESP controllers have a foil lining on the insides of the circuit board enclosures to reduce the effects of EMR but unless you've got the unit installed within 6" of a large 220VAC or larger pump or motor I'm hard pressed to think that you'll really have an issue. I'm sure that in their product testing the manufacturers test for EMR interference and so they put the warning in their manual as a CYA kind of thing.
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