fanner

If be used on fanner, is kiss formula switch, should look up each to block a distinction between place pilot rotate speed in the check after electrify apparent..假如电风扇上使用的是轻触式开关，则应该在通电后检查一下各挡位所控制的转速之间的区别是否明显。

Main fanner is an important equipment of a mine, whose capability directly affects the reliability, stability, security and economy of the mine's ventilation system..主要通风机是煤矿的重要装备，其性能好坏直接影响矿井通风系统的可靠性、稳定性、安全性和经济性；

Main fanner is an important equipment in mine , whose capability directly affects the reliability , stability , security and economy of the mine's ventilation system ..主要通风机是煤矿的重要装备，其性能好坏直接影响矿井通风系统的可靠性、稳定性、安全性和经济性；