Lodging house operators shall be responsible for compliance with the housing standards in regard to the following:
(a) Limiting occupancy to the maximum permitted by the housing standards;
(b) Maintenance of safe and sanitary conditions in all parts of lodging house premises;
(c) Maintenance and operation of all required service facilities:
(d) Maintenance of all plumbing, cooking and refrigeration fixtures and appliances within his control as well as other building equipment and facilities, in an operative, clean and sanitary condition;
(e) Sanitary maintenance of walls, floors and ceilings;
(f) Keeping exits clear and unencumbered;
(g) Disposal of building garbage and refuse in a clean and sanitary manner;
(h) Extermination of insects, rodents or other pests on the premises; and
(i) Hanging and removing required screens.