What is the adjustable pressure setting for the main relief valves in the system?

The adjustable pressure setting for the main relief valves in a crane hydraulic system is crucial for ensuring safe and efficient operation. The correct setting of 2600-2700 psi typically aligns with industry standards for larger cranes used in heavy lifting operations. This pressure range is important as it allows the crane to lift substantial loads while also providing an essential safety mechanism to prevent hydraulic system failures.

When set correctly, the relief valves will open and relieve pressure in the system if it becomes too high, protecting components such as hydraulic hoses, cylinders, and pumps from damage. This range of pressure ensures that the system operates within its designed limits while allowing for a margin to accommodate variations in load during operation. High-pressure settings would risk system integrity, and low settings could impair lifting capabilities, making the chosen range a balance between performance and safety.

In contrast, the other options do not typically meet the performance standards necessary for most modern crane operations, either being too low or not suitable for the hydraulic demands placed on the system during typical use.