I just replaced the drum rollers on my Asko T701 electric clothes dryer. As I was removing the front frame to access the rollers, this metal part fell out (the Sharpie is just there for scale):
I don't know what it is. I put the dryer back together and it seems to run fine, but obviously I'd like to figure out what this part is and where to reinstall it. I didn't see exactly where it fell from but it fell into the dryer drum, so I'm figuring it came from the top edge of the front panel (somewhere around this diamond-shaped hole or below it):
It has no markings or text of any kind on it, and no holes for screws or anything. It doesn't appear in any of the exploded diagrams or parts lists for this dryer that I've been able to find:
I also have the service manual for this model and this piece isn't mentioned in the section on removing the front panel (or anywhere else in the manual, as far as I can tell).
Best Answer
Indeed, it does look like a "Guard, Door Switch", part number 8064187. See item 336 on page 6 of this.
Unfortunately, that diagram does not show how it is assembled. It does show that it goes roughly at the top of the opening, just like you suspected.