two Limit switches one wired n/o other n/c wired in series with a reversing starter done and simpleYou are describing limit switches. The term is for what it does not what it is. What it is is a simple momentary switch Just like the refrigerator light switch Push on it and it turns the power off. let it go and its on. The deal is when the tray is level they will both be on.
It has to be wired like a hall way switch. you know where you can turn the light on or off at each end of the hall.
So now you have the problem of the turner action. you wire the turner or plug the turner into an outlet that is controlled by a timer. Timer is always going but will turn the motor on at specific times for a given amount of time.... say just a tad bit longer than it takes to tip the tray to the Refrigerator light switch. Refrigerator light switch turns the power off to the motor.
I am not a sparky I am a gear head so as I read all this I get stumped by working out how to power both the timer and the rotisserie.
There is also another way rather than putting the switches on the bottom you can put a single one on the edge. if you actually get a switch designed to be used for limits they have a roller on them. The roller keeps the swich from being abraded by moving equipment. Then you put two screws on the tray to act as the thumb that pushes the switch Ont in the up position one in the down position.
There are a bunch of sites for wiriing them up depending on the action you need to have happen. I used to use my Machinerys Handbook. But sadly its packed away with all my drafting and design gear at my house sixty miles away.
deb