how do you change the jumper on the Tunze 3152 osmolator?

[jmason]

I tried to change the jumper on my new Tunze 3152 ATO since my tank is 40 gal, and I wanted the 3 minute turn-off. I opened the control box as indicated in the instructions, but it isn't clear at all from either the picture or the text how you change the jumper. Do you push it sideways? or pull it out with a tweezers? and of you pull it out where is the slot where you put it back? HELP!

 

[rvitko]

It is identical to hardrives circa the 90's where you had to set master, slave, primary, secondary, etc. You just pull up and slide it back down over only one pin by default it is shorting 2 pins together.