Anyone else having dosing pump hardware issues? Ive been running 2 dosing pumps for about 8 months and now the heads are locking up. They havent been working for the past couple of months and I resolved to get them going again since i am tired of dosing by hand. Ive replaced the tubing twice and tried everything i can think of including lubing up the tubing. They pump fine for about 10 seconds, then after that they slow way way down and then eventually lock up. Its impossible to get an accurate measure of how much they are pumping when they are working since they slow down so much at times. They are pumping anywhere from 3 to 5 mLs in 10 seconds which i think is under what they are supposed to do... If anyone has any other ideas, let me know.
Thanks