I just moved into a house with an IG Pool, the filter pressure is rather high and it needs to be flushed. When I start the pump it runs great for about 30 seconds, then pressure builds to high and flow rate drops to the point that vacuum stops running.
So I read through the pool school on how to back-flash, my problem comes in on actually adjusting the lever. I turn the pump off. let all the flow stop, and then try and push the valve down. It wont budge. There is a locking sleeve that I can turn that will allow the pump lever to push down. But no matter how hard I press, (well stopped when I thought the plastic would give) I cant get it to adjust.
Any help would be great. Also, what setting would be back-flush, and other rinse?