Melzi 2.0 motor drivers temps

Just finished my Hesine 505, It's a Prusa i3 clone with the melzi v2.0 board.

I was running the printer after I finished it and got all the software working and finally connected to the
controller board.
It probably ran a total of 3 to 4 minutes and I stopped it to check everything. Noticed the stepper drivers on the Melzi board are pretty hot.
You can touch them but not for long. I didn't have a chance to put my IR temp meter to it and read the actual temp.
What would be considered normal with these drivers. I want to say it has the 4988 drivers but I cant find it
anywhere in the documentation.

Any Ideas or am I overly concerned over nothing?

Edited 1 time(s). Last edit at 07/30/2015 09:24AM by Geartech.

Did you set the motor current pots to get the correct reference voltages for the motor currents you want?

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Not yet, as usual there is nothing in the build instructions about that.
That was my next setp but I wanted to find out what normal is for the temp of the drivers.
I imagine there is a link somewhere on here for the proceedure to set them, I've seen a few posts about it
but haven't run across the exact procedure yet.