can I keep Bosch 800 Series HMB8060 1.5 CuFt Built-in Microwave Oven - Black, on top of my refrigerator?

Bosch-800-Series-HMB8060-15-CuFt-Builtin-Microwave-Oven-Black, does not get hot externally even after long continuous use and does not affect any other equipment , so there should be no problem in keeping it on top of refrigerator.