Before performing a buffer test, what must be verified as correct?

Before performing a buffer test, it is essential to verify the oil level. The oil in the buffer system plays a critical role in providing the necessary damping effect and protecting the hydraulic components. Insufficient oil can lead to inadequate buffering action, which can compromise the test results and potentially lead to malfunction or damage during normal operation. Ensuring that the oil level is correct allows for a safe and accurate buffer test, where the performance of the buffer can be properly assessed without the interference of low oil levels. This verification is a fundamental step in maintaining the safety and reliability of the elevator system.