Minimal noise as the fan speed automatically adjusts to the ambient temperature.Dual function locks can also act as vents for your fridge.Bevelled edge on the backside for optimal utilisation of space on board.Temperature control and compressor speed control enable highly efficient energy consumption.Offering a 3-in-1 solution: fridge, freezer or both at the same time!.Patented removable freezer compartment.Small or medium-sized motorhome or boat, single person or big family – nobody has to go without a Dometic CoolMatic refrigerator.and more There’s smart electronics behind it: the system regulates the compressor speed therefore achieving energy savings of up to 25%. The desired temperature is set on the soft touch control panel which is mounted flush in the inner wall and elegantly integrates the LED light. The freezer compartment can simply be pulled out to make room for a larger fridge or freezer. Refrigerator Primus 591540 Instruction Manual. Their trick is no secret, but a patented Dometic invention. The compressor refrigerators in the CoolMatic CRX series are ingenious quick change artists.