loud buzzing is not "normal
usually indicates solenoid core not retracting to a "happy" position.
tap on it lightly when actuated, wee if it stops.
otherwise, unscrew it, rinse it out (be careful to not loose core or
little spring), re-install, check operation.
I had one that was all corroded (stainless bracket AND wires) hummed
like crazy, I replaced it with a new unit but I cleaned up the old,
soldered new leads & heat shriink tubing.
Works fine but I never put it back in service
On 29 Nov 2005 05:38:49 -0800, firstname.lastname@example.org wrote:
I think you have a valve that has been crossed with a bumblebee.
Now it doesn't just water your flowers, it will pollinate them too.
Remove NOPSAM to email me. Please let
me know if you have posted also.
Other replies relate to solenoid chatter. This may very well be the nature
of the problem. However, I recently installed a new valve assembly in the
brass valve body and got a high pitched buzz whenever the valve was
actuated. I turned out that this was the result of restricting the flow by
manually closing the valve too far. The diaphragm which restricts the flow
(about 1" in diameter) is backed up by a spring and the two were resonating.
Backing off on the manual closure ended the problem.
Since our mains pressure here is about 95#, I was trying to minimize the
stress on some old plastic piping. Apparently, I just got more pressure
differential across the valve than the design could accommodate.
Nah, it's definately chatter since it also does it with the water off.
I'll replace the entire unit, costs less than the repair parts. Since
it's controlling the water supply for my heat pump I don't want to risk
it failing when it gets to -30C outside.
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