21.—(1) When appropriate, having regard to the risks to the health and safety of end-users presented by a safety component for lifts, the manufacturer must—
(a)carry out sample testing of safety components for lifts manufactured by it which are made available on the market;
(b)investigate complaints that safety components for lifts manufactured by it are not in conformity with Part 2;
(c)keep distributors and installers informed of actions carried out under sub-paragraphs (a) and (b).
(2) A manufacturer must keep a register and promptly make entries in that register of any—
(i)complaints;
(ii)safety components for lifts that are not in conformity with Part 2; and
(iii)safety component for lifts recalls.
(3) A manufacturer must keep an entry made in the register for a period of at least 10 years beginning on the day on which the obligation to make the entry arose.