Hey guys. I just got promoted to hvac/r guy at the hotel I work at (dollar raise that I was promised last year and more responsibility woo hoo). Anyway most of my experience is in residential so I can use a little help.

I have a walk in thats running a little high the first thing I checked was the temp control to see if someone messed with it (these people are after my job). That's when I came up on a control I've never seen before. The only numbers on it are twt36 60hz 250vac 25a. It has a range of 60 to 250 so I'm not sure how to adjust it.

Any help would be greatly appreciated.