The head is also the heart of the Liberty CCR. It contains the control units, all sensors, batteries and solenoid valves. The whole assembly is divided to several compartments for easy maintenance and repair. Most of the repairs consist of an exchange of the relevant compartment. The Liberty is designed to work as a modular apparatus, when one component malfunctions, you simply take it out and replace it with a new one. It is fast and easy. Of course, the control units’ software (i.e. firmware) can be updated by user.