Irrigating Industrial Cooking Pot like Crop Plot??

Hi,

im new to the devkit and trying some stuff but i need some help.

I was trying to irrigate the Industrial Cooking Pot like a Crop Plot so it will be supplied with water if you place it near to a tap and dont have to snap it to an irrigation pipe.
What i have tried so far is to delete the snapping settings which worked. After that i have copied the settings from the Crop Plot
Water Nearby Structure Template = WaterTap_Base
Water Nearby Structure Range = 600

Well what i should say? the Tap does not supply water to the cooking pot and i dont know why, so any hint would be appreciated.