It is not the model #. It sounds like the vent is blocked. This would have been the reson the element went out in the other one also. This will cause the thermo fuse to go bad on the duet.
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Unplug the unit and remove the lint filter. Remove the 3-srcews that secure the bottom of the lower front panel. Remove the 2-screws on the lint filter holder and look for a white bullet shaped peice on the exit vent. You can take that to a local parts store to have them test it. Be sure to find out what is causing the vent blockage before running it again. Thank you....
The vent is about 30 feet long. We can get to it in our basement. We checked to make sure it wasn't pinched when we put the new one in place. The old dryer did take longer to dry.
It will be a blocked vent. Check you phone book to see if someone cleans just dryer vents. There is likely a lint build up in the tubing. Your parts store may have a home vent cleaning kit but I think they only go to 20'. It the vent is party blocked it will cause the long dry times and shorten the life of the element. On the new unit the fuse protects this from happening by blowing the fuse.