We had to remove ours out of our '64 GT a couple of seasons ago. I'm sure each model varies a bit based on size, location & interior configuration. But we had four bolts through the floor that could only be accessed through the vent in the belly pan under the trailer. It would have been better if our arms had extra joints to bend the way they needed to!
These bolts attached the bottom support runner of the fridge securely to the floor. There wasn't anything else as I recall, but we struggled with just those four #@!*&% bolts for the better part of a day...definately a two person job. One to hold the bolt on top the other to loosen it from below.
I know I've heard and read of some that you have to disassemble a credenza or part of the kitchen cabinets to get to some bolts as well.
Hopefully someone with the same trailer can help out with more specifics...in the meantime, take a look below to see it this helps.