Need help with tempering machine

I have JKV 30 tempering machine with rectangular tank and revolving disk. Can someone tell me how to use the machine without seeding or using table slabs methods?

Do I just heat up my dark chocolate to 131F, turn on the revolving disk and wait until the chocolate to cool down to 81F and then re heated to 88F?

Also, if I want to add untemper melted chocolate to my tempered chocolate. What temperature should the melted chocolate be before adding it to my tempered chocolate?

Thank you

The process you describe should work fine, but it will probably take a long time to cool. I don't believe the jkv-30 has any active cooling, right? Does it just circulate air around the tank? You could probably speed it up some by adding a fan on the chocolate.

Hi ben, no it does have any active cooling. And I think there are just heating wire wrapping under the tank. Ok will try to see if it works. Thank you 

It should help, but it'll still take a long time. Making the room cooler, or pointing an a/c unit at the tank would help, too. Adding seed or tabling would be much quicker, though.