Temp ramping for fermentation: http://brulosophy.com/methods/lager-method/
Chill wort to pitching temp of 48°-53°F (9°-12°C), pitch adequately sized starter (decanted), set regulator to initial fermentation temp between 50°-55°F (10°-13°C), and leave the beer to ferment until it is at least 50% attenuated. Expect to leave at temp for 5-8 days.
Once 50% attenuation is reached, remove the probe from the side of the fermentor so it measures ambient temp in the chamber and start bumping the regulator up 5°F every 12 hours until it reaches 65°-68°F (18°-20°C). Allow the beer to remain at this temp until fermentation is complete and the yeast have cleaned-up after themselves, which can take anywhere from 4 to 10 days.
When FG is stable and no diacetyl or acetaldehyde is detected in the beer, begin ramping the temp down in 5°-8°F increments every 12 hours or so until it reaches 30°-32°F (-1°-0°C). Allow the beer to remain at this temp for 3-5 days to cold crash.