This happens when the ABS cools too quickly. Also, the inward forces caused by the layers contracting tend to compound when the layer height increases. This means that tall or thick parts will have especially high compressive forces that may cause delamination (layer separation). The best solution is to increase the temperature of your build chamber. I printed two handle-hole covers for my FFCP and have the bed set to 110C; the build chamber runs at about 48C. Additionally, the slower you print and the small the layer height, the more time the extruder will be near the filament it just put down, decreasing the chances of it cooling too rapidly

Increase build chamber temperature > increase bed temperature (110C max) > decrease speed > decrease layer height