What occurs if the load sensing compensator is set to zero psi?

When the load sensing compensator is set to zero psi, it means that there is no pressure differential available to operate the bias piston. In hydraulic systems, a load sensing compensator plays a critical role in ensuring that the hydraulic pump adjusts its output based on the pressure requirements of the system.

If the compensator is set to zero psi, it effectively removes any pressure feedback that would normally signal the pump to adjust its output flow. As a result, the bias piston, which relies on this pressure to move and regulate the pump's output, cannot function. This can lead to a situation where the system may not respond adequately to changes in load demand, but the primary impact is the lack of pressure to operate the bias piston.

This scenario highlights the importance of proper calibration of the load sensing compensator to maintain optimal hydraulic system performance, and not having sufficient pressure for the bias piston can lead to operational inefficiencies or even potential damage under certain conditions.