If there is an imminent danger, in addition to any other action you take, you should telephone OSHA. Your Right to An Inspection Often, OSHA prefers to investigate complaints by faxing a letter asking about the hazard to the employer, rather than by conducting an on-site inspection.
(November 2014) A Totally Enclosed, Fan-Cooled (TEFC) electric motor is a type of industrial electric motor with an enclosure that does not permit outside air to freely circulate through the interior of the motor. An external fan blows outside air over the frame of the motor to cool it.
The fan enclosure is directly behind the board, and the filters can be seen at the top of the image. The safety interlock switch is at the bottom left. Heating, ventilation and air conditioning (HVAC) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality.