What kind of tests are performed on elevators during installation?

The correct answer focuses on acceptance tests, which play a critical role in ensuring that the elevator is safe and functions as intended after its installation. These tests are conducted to verify that all systems and components conform to design specifications and regulatory standards before the elevator is put into service. Acceptance tests cover various aspects, including safety features, operational functionality, and emergency procedures.

Performance tests, while important for assessing speed and efficiency, generally come into play after acceptance testing. Load tests, while crucial for determining the elevator's weight capacity, are specifically part of the acceptance testing process rather than a separate category. Annual maintenance checks, although necessary for ongoing safety and performance, occur after installation and are not part of the initial testing procedures. Thus, acceptance tests are fundamental in confirming that everything is ready for the elevator's safe operation and in compliance with all relevant guidelines.