6080 problem

[drtango]

I have a 3 month old 6080 which recently stopped working. Cleaned it up per instructions, worked another two weeks then stopped again. Cleaned again, and all day yesterday it tripped the GFCI circuit (tried several) when plugged in. Let it sit for half a day, tried again, and it's working.

Any ideas or expected behavior??

Thanks
John

 

[rvitko]

Hmm. The GFCI thing is likely more an issue of running an inductive load on a GFCI. You will find motors and ballasts tend to create issues with GFCI's on occasion. It is also possible the thermal overload switch which is like a thermostat was starting to break contact from an overheat and this caused the temporary GFCI issue- after it cooled it was fine. Tunze pumps have a few redundant safeties so I never bother with GFCI's with them, the primary safety is that thermostatic switch and then if that were to fail the coild would swell and contact the ground and dissipate the current, the electronic versions also have impedence protection. I agree it is the best to have all the safety you can but I have found GFCI's to be unreliable and needless to say would hope that if I am ever on life support it is not connected to a GFCI :lol: Pay special attention to the bushing at the top and the one at the bottom of the pump. The one at the bottom is often a friction point when it is calcified and you will want to make sure there is no grit in it and it is free from the rotor itself, also be sure the red oring is in place at the bottom of the bushing. The one just under the prop which is like a collar has to be inserted just right. If a piece of sand or any debris is preventing it from fully seating this could cause the brakes to engage. The other thing to check is the brakes, make sure they ratchet in and out smoothly and have no grit or algae on them.