Thanks for that. Stupid question but do you have the wooden door fitted in the front of it?
Just that if you havent then you cannot tension the door fully as it needs the weight of the door on there to keep it tensioned.
But if the door is fitted then the only way to adjust the tension is by the below.
You need to pull the dishwasher out from under the unit and remove both side panels.
Then look on each side and you will see the door springs going up the side.
You will see the spring attched to a hook bar,
Remove the spring from there and then you will see loads of holes going up the support bar.
You can adjust the hook there so move it higher on both sides and this adjustes the door from there.
Im afraid this model you can only adjust the door by lifting the spring hook up on the support bar thats the only way you can do this.
If you need anymore info just get back to me.