Recent content by Don E

I found the issue. The pins that the nylon rollers are riding on inside the pump head had backed out about 1/8”, so the rollers were crooked and not putting enough pressure on the tube. Put them back in place and it works fine now. I’ll have to keep an eye on them going forward and replace the...

OK, I’ll give that a try. Would it be pumping acid out the feed line if that were the problem, though?

This isn’t a Stenner pump - it’s Pentair. My check valve (in the picture I posted) is all one piece and doesn’t have the “duckbill” piece you referred to. If I understand what you’re recommending correctly, that’s what I’ve done already. I have that in my original post so now I’m trying to...

It’s a Pentair pump. The siphon tube is inside the pump head. It runs on rollers to create suction to send acid to the pool return. They generally need to be replaced every year because they get eaten up by the acid.

It’s a Pentair pump and it’s about 1 1/2 years old. I actually just replaced the siphon tube on it because it was eaten away. I checked the rollers and they weren’t corroded by the acid at all so I just went with the siphon tube. It gets a good flow of acid and dispenses the right amount when it...

I have a Pentair Intellichem system with an acid pump for Ph control. The high level issue is that acid isn’t being delivered to the pool when I dose it. Everything seems to work right up to the check valve where the acid feeds into the return line. When I manually dose it, the pump works. I’ve...