2005 California Health and Safety Code Sections 19800 CHAPTER 7. REFRIGERANTS AND REFRIGERATION PLANTS

19800.  Refrigeration manufacturers shall hereafter on each
mechanical refrigerator and refrigeration plant which they
manufacture and installation companies shall on each refrigeration
plant which they install place a label designating the type of
refrigerant the unit uses and, if the refrigerator has a
refrigerating unit which contains more than 20 pounds of refrigerant
and is of a type which can not readily be transported without
disconnecting the piping or other part thereof containing
refrigerant, shall label the control and diffusion valves of the
unit, if any, so that any person in case of emergency will be able to
turn off or shut down the plant or refrigerator quickly and
expeditiously.  Each violation of this section is a misdemeanor.