18.—(1) Subject to paragraph (2), an inspector shall obliterate the stamp on any beltweigher which—
(a)fails upon testing to fall within the maximum permissible error in relation to in-service testing set out in clauses 2.2 to 2.22 of R 50-1;
(b)bears any mark or statement which is not authorised by the certificate of approval relating to the beltweigher or which does not reflect the test report on initial verification; or
(c)otherwise fails to comply with any appropriate requirement of these Regulations or of R 50-1.
(2) Except as provided by regulation 19, where any beltweigher does not fully comply with the requirements of these Regulations but the nature or degree of the non-compliance is not in the inspector’s opinion such as to require the immediate obliteration of the stamp, the inspector shall give to the proprietor or any person in possession of the beltweigher a notice calling on him to have the beltweigher corrected within a stated period not exceeding 28 days; and he shall obliterate the stamp if the correction has not been made within the stated period.