Printers run g-code [
reprap.org]
Its just a text file
If you look at the start of V2calibration.gcode
It sets the temperature.
M104 S210
M140 S55
M190 S55
M109 S210
these are standard PLA temperatures
Regarding cleaning the build plate, be careful what you use, some thing leave a residue
I wash mine if good old dishwashing liquid and water
Wash and dry it
Then I wipe down with isopropyl alcohol on a plan white paper towel. Don't touch the surface of the bed with fingers, fingerprints == oil == no sticking.