...easy way to remove Pentair pump lid. It's one of those newer see-through type with 2 tabs to twist off. It takes a lot of strength to move it and once it moves, you'll scrape your skin off by hitting your hand on another equipment nearby. I always keep the oring lubed. I am not sure why the lid has cut-out slots on top but they sure collect dirt, though I don't think it's the reason why it's so hard to twist the lid off. I now have a rubber mallet kept onsite to tap on one of the tabs. Hope I won't break it.
I thought I was the only one with this problem until I heard other pools onwer complain too. One actually hurt his shoulder. Why can't they keep the old 2-crews design like the old Aquaflow. I noticed while Pentair make good products for the purpose but their designs are really backward when it comes to maintainance. They require tools to open up. For their filter (cartridge), I have to have a 7/8 ratchet wrench onsite too. Those 30 yrs old equipments had much better designs (Aquafow, Purex, etc....)