The Lumikko FJ45 is an industrial environment cooling unit suitable for different liquids. The unit can be equipped with one or two separate independent cooling circuits, whose accuracy can be 0.5˚C. A large 300L internal tank is integrated to the unit, which efficiently equalises the load spikes in cooling the location. The unit can be equipped with its own temperature control, or it can be integrated as part of a larger system. Usage for the units include cooling the resonators and mirror circuits of laser cutting machines or for temperature control of process machines.