Ultimaker Original, Assembly Instructions Manual

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Step 1: preparing the electronic cooling system Mounting the electronics circuit board
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image 122: attaching the wooden air-duct cover
image 123: putting blue tape on the hex nuts 3mm
6. Put blue tape on the hex nuts 3mm, see image 123.
5
Notice: you have to perform this action to isolate the bolts M3 x 12mm
electrically.
7. Tape the tiny gaps around the cooling duct sheet.
5
Notice: you have to perform this action to prevent unwanted air leaks.
8. Connect the cooling fan to the (always on) 12V power output,