Some help wuth ABS (SOFTWARE/HARDWARE)

Hello, after some issues with my k8400 and after melting down the isolator can anybody tell me what are the best settings for abs print for the best quality prints and not melting down isolator.
If you could propose me some settings for my printer to be able to print with abs without melting down the isolator. E.x( fan speed, little fan position, for avoiding the melt and being able to reach the temperature needed, max temp needed for abs print needed)(the settings I need for a good abs print on repetier host etc.)

Velleman sent replacement part since it melt out during first filament upload.
I am really disappointed it’s been one month now trying to make this work, first time was the extruders driver that wasn’t working so had to wait 1 week for delivery then isolator peek melt down so have to wait again util it arrives so I’m looking for a solution before isolator guide arrives for a good abs printing without having to wait 2 more months to make it work

I own a Vertex K8400 with version 1.1.1 Single Head. No heated bed.

Without a heated bed, printing ABS is almost mission impossible. Check for some tips in the [color=#408040]Wiki[/color].
Print at 225° max and 75% flow. Nozzle-bed distance 0.2 mm max. When ABS sticks on the Buildtak it’s very hard to remove and you’ll ruin your Buildtak in no time.

Do you especially need ABS? Try PET(G), it’s so much easier in use. No heated bed needed, strong, flexible and - very important - without the unhealthy smelling that makes ABS less pleasant.

[quote=“raby”]Without a heated bed, printing ABS is almost mission impossible. Check for some tips in the [color=#408040]Wiki[/color].
Print at 225° max and 75% flow. Nozzle-bed distance 0.2 mm max. When ABS sticks on the Buildtak it’s very hard to remove and you’ll ruin your Buildtak in no time.[/quote]
Thanks for the advice. as you said it seems empossible to me also so i turned to PLA.
much easier for a a start and seems pretty fine
For the Buildtak i flipped it over and im printing on the back side (glass) and seems really fine. Very easy to remove objects and with some paper glue it will print fine.