Today I had to have a service call after tearing down my system for a routine cleaning and being unable to figure out why I was blowing DE back into the pool when I recoated the grids. After some close inspection with the pool guy we finally saw that ALL but one of my grids and totally blown out at the bottom of the grid. There were no threads left and the bottom of the grid material on all but one of my grids was totally open ... not just a small rip ... but the entire bottom of the grid material was totally open and there was not stitching left at all or evidence of stitching. Pool guy said he had never seen this before.
No, I back-flush pretty regularly and no, I did not have any pressures on the gauge above 20 psi. I maintain my chemistry and its never been out of hand.
I am thinking I got a batch of bad grids all manufactured at the same time. Only the short grid was OK. All of the long ones were blown out. The system was 4 years old. It was an expensive day.
Anybody else experienced grid failure from Pentair grids purchased in the 2014 time frame??
No, I back-flush pretty regularly and no, I did not have any pressures on the gauge above 20 psi. I maintain my chemistry and its never been out of hand.
I am thinking I got a batch of bad grids all manufactured at the same time. Only the short grid was OK. All of the long ones were blown out. The system was 4 years old. It was an expensive day.
Anybody else experienced grid failure from Pentair grids purchased in the 2014 time frame??