Rondomatic 400 gears

[ikover]

Hello,
My fish feeder, the Grasslin Rondomatic 400, stopped working (I couldn’t hear the usual low buzzing sound). When I looked for information, it was mentioned that this issue can be caused by fish food getting clogged inside. That was indeed the problem in my case, but what wasn’t mentioned is that the gears can fall apart when the unit is disassembled. Now I’m struggling to put everything back together. Unfortunately, support has been unresponsive. Is there any chance that someone has gone through a similar issue and might have a guide on how to reassemble the gears?

 

[GaryE]

I went through an issue like this many years ago. There was no help and it was either be mechanically adept and get it back together perfectly, or accept the loss. I no longer have one...

 

[raylove]

I didn't know what one of these was so I searched online out of interest. One of the first things that came up was this video. I'm not sure how much of the mechanism is actually shown nor what the video is trying to achieve, but it might help you.

 

[jaylach]

I didn't know what one of these was so I searched online out of interest. One of the first things that came up was this video. I'm not sure how much of the mechanism is actually shown nor what the video is trying to achieve, but it might help you.

Me too. Here is what I came up with as to gear placement.

 

[Back in the fold]

Me too. Here is what I came up with as to gear placement.
View attachment 375609

What a wonderful modern age we live in when obscure information like this can be found by someone with the diligence to seek it out . Good job Jay !

 

[jaylach]

What a wonderful modern age we live in when obscure information like this can be found by someone with the diligence to seek it out . Good job Jay !

Wasn't really much diligence involved. I just did a search for the model and went to images in Firefox.

 

[ikover]

wish it was that easy....apparently i was able to put it into correct placement, yet it doesnt work...while that pointer is on the edge of that gear (1) it works fine...but once it goes inside (because tipping point (2) will cause that gear to turn and there is piece of plastic which will turn that gear. Once it falls into position like in the image 20260107_094818, that long leg which should help to turn it doesnt have enough "power" to move it and its whole mechanism is just stuck. Dont know how exactly that pointer goes back to the edge of gear as it remains stuck inside