Do you have service agreement with your HVAC company? If so let them clean it for you when they come out service the equipment. I will say this be careful if you try to do yourself. There are proper ways to take out and clean and there ways not do which can hurt you and the EAC. Do to this not being DYI site I would suggest that you let your dealer/installer do it. An if you you don't have a service agreement I would be wise in these case.
Watch how they clean it and conform there if you choose to do it your self. Be careful and if you don't know how to do then don't clean yourself!