Designed for indoor, outdoor, remote and washdown applications that require a closed-loop system to protect electronics, PKS Series can be used to cool sealed enclosures and is suited for cooling industrial electrical components that need dust protection. They also protect against corrosion and contamination in the food and beverage industry and can survive in outdoor installations. With only two mechanical elements, the air-to-air heat exchangers are offered in five configurations; 22, 45, 64, 100, 150 and 180 W/°C. Unlike industrial air conditioner cooling units, the exchangers take advantage of a cooler ambient environment when closed-loop cooling is required, sealing against gas, humidity and dust.