What happens if the main relief valve is set lower than the pump compensator?

When the main relief valve is set lower than the pump compensator, it can lead to inefficient system operation. The setting of the relief valve plays a critical role in controlling the maximum pressure within the hydraulic system.

If the pump compensator is set to a higher pressure than the relief valve, the system can experience conditions where the excess pressure generated by the pump exceeds the relief valve's setting. As the pump continues to generate pressure, the excess fluid may be directed back to the tank through the relief valve, causing turbulence and fluid friction. This turbulence generates heat, leading to a rapid increase in fluid temperature.

The increase in temperature can have several negative effects on the hydraulic system, including degradation of fluid properties, increased wear on components, and the potential for cavitation. Therefore, it is essential to ensure that the main relief valve is appropriately set relative to the pump compensator to enhance efficiency and maintain optimal operating conditions.