D.C. Mun. Regs. tit. 25-A, § 1523
1523.1 A machine vending potentially hazardous food (time/temperature control for safety food) shall have an automatic control that prevents the machine from vending food if there is a power failure, mechanical failure, or other condition that results in an internal machine temperature that cannot maintain food temperatures as specified in Chapters 6 through 13P, and until the machine is serviced and restocked with food that has been maintained at temperatures specified in Chapters 6 through 13.P
1523.2 When the automatic shutoff within a machine vending potentially hazardous food (time/temperature control for safety food) is activated:
(a) In a refrigerated vending machine, the ambient air temperature may not exceed five degrees Celsius (5° C) (forty-one degrees Fahrenheit (41° F)) for more than thirty (30) minutes immediately after the machine is filled, serviced, or restocked;P or
(b) In a hot holding vending machine, the ambient air temperature may not be less than fifty-seven degrees Celsius (57° C) (one hundred thirty-five degrees Fahrenheit (135° F)) for more than one hundred twenty (120) minutes immediately after the machine is filled, serviced, or restocked.P
SOURCE: Final Rulemaking published at 50 DCR 4394 (June 6, 2003); as amended by Final Rulemaking published at 59 DCR 13690 (November 30, 2012).