you have to set the clock speed on it.
On your comand line you start cgminer with add
"--klondike-options 350:50"
350 is the clock speed, 50 is the target temp shut off.
you can set the clock speed from 282 - 375 i do believe. The higher the clock speed the more Gh/s you will get from it. I run mine at 342. The higher the clock speed the hotter it will run, add more fans blowing on the bottom if it starts to run to the point of shut off.
you can find out more info on the K16 at
http://projectklondike.org