I just bought a new water pic, and out of the box it triped the CGFI twice before it actually started pumping water, and a third time after it started pumping. It now works, but continues to trip the CGFI maybe every second or third time I use it. Frequently it trips at the point where I turn off the power switch, so that I must reset the CGFI before continuing to use the device.
The Water Pic company that makes the appliance says they are getting a lot of complaints like this and the fault is mine because I do not have a surge protector plugged into my CGFI. They say if I will plug a surge protector into the CGFI outlet and plug the device into the surge protector that will correct the problem.
This seems counter intuitive to me since surge protectors shut off current in case of a surge coming from the electrical line. I don’t see how they would keep a CGFI from tripping if there is a voltage difference caused by the appliance. Surely the solution should be to fix the appliance so it does not trip the CGFI. I have had several previous models of water pics, including owning another of this same model, and have not had this problem with these other machines.