COR 20 won't start after cleaning- help!?

[shakeandbake]

So I ran into this when I originally set up the cor 20. And I feared it would happen again when I needed to clean it. Well. Here I am.

After pulling the pump apart to clean and then putting it back together I keep getting an overcurrent alarm. So I can't run the return. Crazy frustrating. Trying to troubleshoot in a bucket.

Is this related to the gasket? Does anyone have any hints to get this seated correctly so I can turn it back on? Any experience with this error?

Thank you in advance. Hate to let it sit all day and I have to run to the moms in an hour-ish. ugh. Been playing with this thing for almost 2 hours now.

 

[Biglew11]

Mine also does this. I found I have to very loosely and carefully tighten the 4 screws on the volume. Or it will make contact with the impeller.

I also sanded down the plastic in the center of the volute so that it doesn't make contact with the impeller.

 

[shakeandbake]

Mine also does this. I found I have to very loosely and carefully tighten the 4 screws on the volume. Or it will make contact with the impeller.

I also sanded down the plastic in the center of the volute so that it doesn't make contact with the impeller.

Thank you for your input!

I got it. Finally.

It seems that the rubber gasket and the volute want to move prior to the tightening of the screws. Like... you seat the gasket, put the volute in place, then put on the cover ...but before you can put the four screws in place and tighten them, the impeller moves up inside the chamber. If it moves, the gasket unseats, and that won't allow the impeller to turn, so you get the over current alarm.

After, putting it together, tightening the four screws, testing it, getting the alarm, ...then taking the four screws out, pulling it apart to check and reassemble, maybe two dozen times, ...I found that holding the impeller in place with a finger while putting on the cover, then holding it upright rather than turning the pump screw side up, then putting the screws in upside down and finger tightening them all, ... that may prevent the impeller from moving and the gasket from popping off. Or, it didn't, and it just worked that one time out of 30.

Not for nothing, but it is $350 pump. If the design doesn't permit it to be cleaned and reassembled, without an hour and a half of stress, design it better. Or, at a minimum, include some instructions online that can help.

 

[NoFoolin]

So I ran into this when I originally set up the cor 20. And I feared it would happen again when I needed to clean it. Well. Here I am.

After pulling the pump apart to clean and then putting it back together I keep getting an overcurrent alarm. So I can't run the return. Crazy frustrating. Trying to troubleshoot in a bucket.

Is this related to the gasket? Does anyone have any hints to get this seated correctly so I can turn it back on? Any experience with this error?

Thank you in advance. Hate to let it sit all day and I have to run to the moms in an hour-ish. ugh. Been playing with this thing for almost 2 hours now.

This happened to me and I found that I was over tightning the screws on the face.

 

[Brice Wagner]

+1 on over tightening the screws. That just fixed mine.

Same situation. Just cleaned, over current alarm, once the alarm went away there was only a trickle.

 

[Ultimadem]

All, have had this problem myself, and have had this thread come up in my search each time while looking for answers, so I figured I'd provide my feedback on the issue.

What I discovered is that the ceramic bushing behind the impeller was pushing forward during cleaning, forcing the impeller closer to the volute than it should. My solution was to take out the rubber block with the ceramic bushing, cleaning that really well (I did not remove the ceramic from the rubber, just surfaced cleaned the assembly) and thoroughly cleaned out the back of the impeller hole. I then put the bushing on the impeller, put the impeller in without the volute o-ring in place (no pinching this way) to make sure I got the bushing in straight, then took out the impeller and pushed the bushing in as deeply as I could. Then re-assemble as normal, including putting a normal amount of torque on the screws, and no issues restarting the pump at all.

Hope this helps someone!