Mark VII switch, yet again

More
10 years 6 months ago #9197 by DJ_
DJ_ replied the topic: Re:Mark VII switch, yet again
I just proof read the last post. When I say:

your switch has worn contacts on the reversing side.

I mean the side of the switch that has the contacts for engaging the start winding. As opposed to the side of the switch that has the neutral/hot switching contacts. I didn't want there to be any confusion since it's your forward direction that doesn't work.

Also, I should add that the neutral/hot contacts can still conduct even if the contacts are worn out (by arcing). The switch won't last very much longer in that condition, however.

-DJ

Please Log in or Create an account to join the conversation.

  • dustywoodworker
  • Offline
  • Platinum Boarder
  • Platinum Boarder
More
10 years 6 months ago #9200 by dustywoodworker
dustywoodworker replied the topic: Re:Mark VII switch, yet again
It was worth reading and I don't have a Mk VII. I'm looking forwatd to your future reports.

Please Log in or Create an account to join the conversation.

More
10 years 6 months ago #9242 by DJ_
DJ_ replied the topic: Re:Mark VII switch, yet again
Just a quick note here to let folks know I'm still working on the M7 switch and relay circuit.

The circuit simulates on the computer well which is always a good first step. Now comes the actual testing in the real world, but I think I have all the t's crossed and i's dotted.

On another note, I'm trying to decide how to mount these relay components inside the motor pan. I would prefer not to drill extra holes in the pan if I can avoid it, but none of the existing holes are looking promising yet. However I haven't spent enough time looking at it.

I would like to mount the relays to a separate piece of Aluminum sheet metal. It will have some folds to strengthen it and provide a heat sink for the SSR.

One thing I should note here is that the AO smith motor is quite a bit different from my M5 setups. The AO motor has an internal fan located on the front behind the end plate. The thing I called a fan shroud is actually just a duct of sorts to direct the incoming air flow. The motor sheave does not have the cast aluminum paddles/fan blades you see on the M5 motors. Another one of those differences.

Anyway, I want to take advantage of airflow if I can to help keep the SSR cool for long life.

-DJ

Please Log in or Create an account to join the conversation.

Time to create page: 0.188 seconds
Powered by Kunena Forum