Does anyone have any practical input/suggestions on how to use the master valve on/off adjustment? Is the idea that you don’t touch these (leave them on zero) unless you have a water hammer problem you’re trying to solve, or a pump that needs to start early?
I’ve got a rather ordinary Hunter irrigation system (Pro-C controller), and I’ve no idea if it applies any sort of adjustment at all, and if it does, how much it is. I’ve got a Master Valve and ordinary irrigation zones. Do I need to touch the master on/off adjustment at all? The tinkerer in me thinks it would be ‘safest’ to set Master On Adjust to +1 and Master Off Adjust to -1 to minimize the stress to the pipes to the sprinkler heads, but I really don’t know. Any disadvantage to doing that?
Looking for feedback and/or guidance on best practice here.
The on/off adjust are normally left as zero (the default values). You are right that these parameters can be used to fine tune water pressure / reducing hammering problems. I frankly don’t know what are the rule-of-thumb values. I think (I am not an expert on this topic 🙂 controllers that do not provide this as an option just use zero.