I have a MCP 655 pump hooked up to my system, and I wanted to experiment with raising the speed of the pump. I have the regular version with the dial on the back. So far I've left it at the same speed it came in, speed 2. With a flat edge screw driver I can spin it counter clockwise all the way past one and back around to 4 and it is set to off. But I can't get it to more to three. I've used some force trying to move it from 2 to 3 but am afraid to use more force without asking here first to make sure I'm not doing something wrong.
It moves really easily down to one. Should it be this difficult to move to three?![Confused :confused: :confused:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
It moves really easily down to one. Should it be this difficult to move to three?