(1)  A council, on its own volition or on application, may vary the registration of any regulated system by omitting, adding, substituting or amending any condition of the registration.

(2)  Before varying registration of any regulated system, the council is to consider –

(a) the manner in which the premises where they are installed are being operated; and

(b) the protection of public health.

(3)  The council, by notice in writing served on the holder of the certificate of registration of a regulated system, must notify any variation of the registration.

(4)  The variation of the registration takes effect –

(a) if an application for a review is not made under section 164(d) , 28 days after service of the notice; or

(b) if an application for a review is made under section 164(d) and the Magistrates Court (Administrative Appeals Division) makes a decision affirming the decision under review, on the day the decision was affirmed.