On completion of the work of installation or alteration, the manufacturer of the elevator or the person making the alterations shall make a practical test of the safety devices of the elevator in the presence of an inspector assigned by the commissioner. If the test is satisfactory to said inspector, he shall issue a certificate approving the elevator and safety devices thereof.
Mass. Gen. Laws ch. 143, § 63
Test of safety devices on completion of work; certificate of approval
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.