Can someone help me with my 6100? I'm getting really frustrated!!

[jherrin215]

Ok, I bought a 6100 from here used. Got it in, plugged it up, alarmed out. Contacted the seller, went to record it to show them and worked fine. Put it into my tank, for about 2 days worked fine. Started randomly alarming out sometimes would restart itself. Took it out and cleaned it, same thing after I cleaned it. Upon looking found that the bearing was worn badly. Spent 45 more dollars on it and replaced the bearings and impeller with the new one peice style 6100.700. Put it back together again. Put it in the tank and it ran like a charm for about 2 hours. Went to town and when I returned home open the door to hear that wonderful BEEEEEEEEPPPPPP. Took it apart again to check and everything was free and looked fine. Tried to turn it on without the impeller in there to see if just the motor would spin and nothing so does this mean after dropping another 50 bucks into this thing now the motor block is bad? Sorry to sound negative but this is getting really frustrating!! I really appreciate any help/advice!

 

[shawnz28]

If you replaced the impeller and the upper and lower bearings my assumption would be the electronics might be starting to go. Roger will be back on Monday and will be the guy to ask.

 

[jherrin215]

So do you think it may just be the driver? I don't want to put any more money in this power head but if its not the motor block then it may be worth placing.

 

[shawnz28]

Not sure honestly, I actually should have said the motor block. I would wait till Roger chimes in before you do anything. I know the motor block for these are really hard to come by these days and used ones are all that is to be had when they are as these were discontinued many years ago. Tunze had an upgrade program for pumps that were dead and no parts available but not sure if that has ended.

 

[rvitko]

Keep in mind that model 6100 was made from 2002-2007, they are all at least 5 years old and they are starting to near the end of life for the major components.

What you describe is either going to be caused by something not being 100% with the drive unit or a dying motor. Make sure that when you changed it, you changed everything that was included, including the 3000.620 bushing all these parts changed between the old drive unit and new. Also be sure you did not invert the 3000.612 and 3000.610, oring is under the bearing, not over it. Be sure the 3000.620 is pushed in all the way, if it has come forward which is common on a dry start, it can bind the propeller.

If it is none of those causes, the motor is dying, typically an intermittent alarm is caused by an overheat at some point which caused the Hall sensor to move just enough to no longer be able to "see" the magnet and it is tricked into thinking the magnet is stopped. This is not repairable because everything is entombed in polyurethane. In the past you could replaced the motor block, which was $120 about. They discontinued this part in 2009, the current option is a 6105 upgrade kit, which runs about $240, if you have a good working driver, which it certainly sounds like, we will deduct $40 for the driver if you send it in. The new pumps don't use an external driver and the upgrade kit replaces everything you have.