Hydac Cooler Catalog

How to Choose a Cooler

The advantages of an off line cooling system are a stable cooling and filtration performance irrespective
of variations in flow and duty cycle of the main hydraulic circuit. This allows the cooler to be sized to fit the
heat load and not the maximum return flow of the main circuit. A further advantage is that the offline cooler
is completely isolated from surge pressures in the return line that can potentially damage the cooler. Also,
maintenance can be performed on the filters without having to shut down the main system.