Second year beek here from the north (Ottawa area, Ontario). Looks like we have some honey to harvest and will be using a triangular bee escape to remove the bees from the honey supers. So, which way is it installed ... with the triangle facing up (into the bottom of the honey super) or facing down (into the top the deep brood chamber)?
Look at the escape devise, one side has large hole and the other side has 3 small openings, they are the size of one bee. Put the large opening towards the honey super and the other side down towards the brood box. I build a couple of them and they are a pain to use. you have to open up the hive and install it below the honey supers and then wait 24 hours. Then you go in, if the wheather is still good and there are still a lot of bees left that you will need to shake off.
Try getting Bee quick or Beedun. These are the ones that smell good, like almond extract. Take 2 spare inner covers or similar size boards and staple a bath towel or a piece of cloth to them. Cut off any excess material. Spray a light coat of the bee quick on the cloths, place one in your transport vehicle (truck, wagon, wheel barrow), cloth up better yet don't spray this one until you are ready to place the super on it, place the other one directly above the honey super you plan to remove, wait 5-6 minutes (use a watch of some sort), remove the super and place it on the board in your vehicle, cover it up leaving small holes only in the corners, cardboard the size of the super works great with something to hold it down. The bees remaining will be fighting to get out of the super. Do the same to the rest of the supers, adding them on top of the first one, only leaving an opens on the top super. if the bees refuse to leave, you probably have brood in the super and will have to locate it and put that frame/s back in the hive. I do not use excluders but suspect if your super is directly above an excluder, it will make it very difficult for them to exit the box.