Shopsmith Forums

After dealing with my rps 0 this past week, I learned a lot, and have a possible solution for everyone dealing this this issue.

As you know, there are optical sensors on a small circuit board under the fan on the rear of the motor. As dust accumulates on these sensors, it finally gets thick enough to block the light and cause the motor to not start, and display the dreaded 0 error.

To get back up and running is a simple matter. Just remove the motor from the head stock, then remove the black cover on the rear of the motor. (3 Screws) Then remove the spring clip that keep the fan on the shaft. i used a "pulley puller" to pull the fan blade up enough to remove the optical sensor circuit board. (Easier said than done.)

Then it is a simple matter to clean the sensors and reinstall everything. However, as everyone knows, this is a time consuming process.

Today I spoke with a friend who knows about these DVR motors. He and his company deal with a supplier which makes a special cloth like filter designed to surround DVR motors and which is held onto the motor with a rubber band. He was surprised that I had gone 4 years without encountering this error. He thought the filter goes down to 6 microns.

If there is enough interest in this, I would be happy to get more details from my friend so that anyone who wants this filter would be able to get it. I personally am going to get one of these filters, and the next time I have to remove the motor, I'm going to install it.

Let me know your thoughts.

Thanks to all the posts that I found, that enabled me to get my own machine up and running again. You all are the best.

One question I have ask others who have seen this error is if they run dust collection when using their machines. So far I have not seen the error and while it could just be around the corner and happen tomorrow I have also exceeded the four years you mentioned.

So if you could be so kind, do you use dust collection with your shopsmith?

I would be interested in the filters, any information like this would be good to know so if and when I have a failure I too could add the filter.

I haven't kept up with this subject but I know the teknatool nova lathe had been a source of information on this. I have to wonder if they now have added this filter. If I get some spare time I'll see what I can find out.

Ed

Good question about dust collection.

Yes, I use dust collection. In fact, because much of what I do, requires me to go between table saw, jointer and planer (on its own power stand), I have a system with blast gates at each tool. The blast gates are wired with micro switches that turn on the dust collector when that particular blast gate is opened.

I also run my jet air filtration system when I am sawing and creating dust.

I'll try to add a couple of pictures, so you get the idea. (I guess I can't figure out how to do that. Thanks for your help. I got it.)

I will continue to follow up with my friend about the DVR motor filters.

Thanks

Lyle

lpollett wrote:Good question about dust collection.

Yes, I use dust collection. In fact, because much of what I do, requires me to go between table saw, jointer and planer (on its own power stand), I have a system with blast gates at each tool. The blast gates are wired with micro switches that turn on the dust collector when that particular blast gate is opened.

I also run my jet air filtration system when I am sawing and creating dust.

I'll try to add a couple of pictures, so you get the idea. (I guess I can't figure out how to do that.)

I will continue to follow up with my friend about the DVR motor filters.

Thanks

Lyle

This thread should help with posting pictures. https://www.shopsmith.com/ss_forum/comm ... 19246.html

Thank You.

Did you ever get enough interest in this to post information on the filter you referenced? I have encountered the same issues, and solved it the same way your presented. It just seems that the MARK VII is much more sensitive to sawdust build-up to almost anything else I have used. I also find it amazing that SS TS is not well informed on this issue or how to resolve it.

Current model is a Mark 7, NOT a Mark VII(1960s version).

TS not competent - not very newsworthy. Unfortunate state of affairs since decades of experience retired.