b'Balance Your Heat LoadGenerally speaking, hydraulic systems work very hard, which is why we design and build our Fluid Power Coolers with the toughest possible working conditions in mind. Whether your application is mobile, such as moving,processing or delivering materials, or stationary, such as power generation, manufacturing or oil & gas extraction, our coolers are designed to perform and engineered to survive.Heat in the hydraulic systems is created by friction from the use of pumps, hydraulic lines, fittings, valves, motors, and actuators. If this heat is not rejected, the system will overheat, significantly reducing efficiency and causing premature failure of system components. Heat created by the system must be balanced by a properly sized oil cooler. So how do you know which cooler you need? Read on.step 1choose a seriesAll hydraulic oil coolers work by transferring heat from the oil to the atmosphere. As oil travels through the tubes, the heat is transferred to the fins. Air passing over the fins transfers this heat to the sky - heat transfer cannot occur without proper air flow. OC Series Oil Cooler only. OC Series coolers require outside air flow to function, typically from vehicle movement or an engine driven fan already in place for other engine cooling components.DC Series DC Series coolers are equipped with one or more electrically powered fans, available in 12V or 24V configurations. The fans create powered air flow in stationary or slow moving mobile applications.HC Series HC Series coolers are equipped with a hydraulically powered fan, for use in applications where a 12 or 24 volt electrical system is not accessible. The HC fans can be powered by the same hydraulic circuit they are cooling.step 2determine if you need reliefFluid Power Coolers are designed, built and tested to operate efficiently within a given range of pressure. Too much pressure within the system will reduce the life of the cooler and potentially cause a catastrophic failure of the cooler and/or theentire system. Several of our coolers offer an optional bypass or pressure relief valve system. When hydraulic pressure spikes above the rated pressure, the pop-it valve opens allowing the fluid to divert around the cooler instead of through it, thus protecting it from excessive wear and potential failure. Having a bypass option is especially important when the system experiences consistent hydraulic pressure surges from fluctuations in the load, such as with a loader or backhoe.Bypass is also important when the equipment will be operated in winter air temperatures, which can thicken the fluid so that it cant flow freely and oil starvation can occur. The increased pressure opens the valve and diverts the cold fluid around the cooler until it comes up to operation temperature, returning the flow to normal. For more and important information on bypass options and considerations, please refer to the Technical Selection Guide in this document.2'