In the classic sense,,, you need to check to see if your refrigerant charge is correct. If it is, then you can check the high and low pressure switches in the Reciever/Dryer....If still good through those items then your Thermal Expansion Valve may be bad or have trash in it. You may have moisture in your system causing ice to build up... and excess pressure show at the high pressure switch... and be sure your aux fan is working... if not, then the head pressure builds up too fast to allow the system to cool the inside of the car before the high pressure switch cuts out the electricity to the clutch....There are other things ... but this is sorta an easiest simplest first list...