Fans are designed to operate at full speed, and it is most important that they are not run at half speed if proper ventilation or air conditioning is to be maintained .
Amaphiko enzelwe ukuba asebenze ngesantya esipheleleyo, kwaye kubalulekile ukuba angabalekiswa ngesantya esisisiqingatha ukuba kufuneka kugcinwe ukungeniswa nokukhutshwa komoya ngendlela elungileyo.