What must be temporarily disabled to conduct a counterweight safety test?

To conduct a counterweight safety test, it is necessary to temporarily disable the car safety. This is because the car safety is designed to engage and stop the car in case of a malfunction, which could interfere with the testing process. By disabling the car safety, testers are able to freely assess the operation and stability of the counterweight without the risk of the car safety system activating unexpectedly.

The test aims to ensure that the counterweights are functioning properly and safely, and with the car safety disabled, it allows for a more controlled environment to evaluate how the counterweight behaves under specific conditions. This is critical to confirming that the counterweights can effectively perform their intended role in maintaining balance within the hoisting system.

In contrast, the other elements listed, such as the hoist ropes, buffer system, and weight measurement, either do not directly affect the counterweight safety test or are necessary components that should remain operational during the assessment to ensure the overall safety and functionality of the hoisting system.