(Amended by Ordinance No. 171797, effective November 26, 1997.)  It shall be unlawful for any person, firm, or corporation to erect, install, alter, repair, relocate, add to, replace, use, or maintain heating, ventilating, comfort cooling, or refrigeration equipment in the jurisdiction, or cause the same to be done contrary to or in violation of any of the provisions of this Code.  Maintenance of equipment which was unlawful at the time it was installed, and which would be unlawful under this Code if installed after the effective date of this Code, shall constitute a continuing violation of this Code.