@John J CWS VI CI,
John J CWS VI CI wrote:As suggested, there may be a couple of causes to the failure of the unit to operate. You need to first look at the whole water system. Backwashing is a must, so your well pump system needs to have the capacity. I assume that it did at the time of the start-up. Is the pump maintaining pressure during the backwash cycle? I would double check the bladder tank to make sure that the precharge is correct. A low tank precharge can cause rapid cycling and wildly fluctuating pressure and flow.
John, just attempting to be helpful here. If the unit is in the backwash position, short cycling of the pump is not possible due to the high flow requirements of heavy mineral such as greensand etc. but if it were possible, the pressure would on average be the same or higher than usual so the required DLFC gpm would be maintained.
John J CWS VI CI wrote:As far as the media, I have not attempted to check a greensand filter for channelling or clumping, but I would remove the distributor and poke around the media with a broomstick to feel for clumps. If the distributor will not pull out, you could try to flush it out by inserting a hose into the distributor tube which *may* help to break up some of the media. You would need the hose to flush the distributor back into the tank.
After all of that, I would do two regenerations, one right after the other to see if the media can be brought back to life. Test for iron before and after the filter.
I have rebuilt a couple hundred heavy mineral filters and I've never been able to pull or float or flush a distributor tube out of any heavy mineral; or flush it back in after having it pulled out even a little bit.
You take them out by dumping and flushing all but maybe the last 18" of the mineral out of the tank. All heavy minerals require a gravel underbed and that will prevent putting a distributor tube back in to the dimple in the bottom of the tank. So you install the tube with the tank empty or at least have the dimple in the center bottom of the tank clear by laying the tank flat and getting the mineral to lay on the side exposing the dimple.
I've seen clumping to the pint that you can't get the clumps out of the tank and throw it all away.
John J CWS VI CI wrote:........ It seems to me that the chlorine dosage during the regeneration is too strong for the valve components. I've already had to replace the piston seals on a Clack WS1 after only a year.
I have sold about 60 Clack WS-1 controls with both versions, continuous dosing and not chlorination systems and have not had that problem.
The oldest is about 5 years old and I heard from the guy wanting new chlorine pellets just last week. I think there was another cause of the problem John and you're mistakenly blaming chlorine or the Clack seals. I have had one valve that had a hard scale buildup on the piston that tore a 1/4" long piece out of the edge of a seal. I could send you pictures of both if you want to see it. The guy had hard water and my inline pellet chlorine system and mixed different types of chlorine pellets, that's what caused the scale, that tore the seal. The seals in a Clack, unlike Fleck, are self cleaning and self lubricating.
I'm glad to see you here to help members John, a few others here do a lot of ranting like in this thread and hopefully your level headed troubleshooting skills can help cut through the off topic personal attack clutter.