... fan Axial fan, Axial Flow Fan, Ventilator, Ventilation, Ventilating Fan, Ventilation, Anti-explosive mine ventilation fan Axial fan, Axial Flow Fan, Fan, Ventilator, Ventilation, Ventilating Fan, Ventilation, Ventilator Fan ... allows you to:· choose the type of control (manual or automatic);· operation of the ... operator receives light and sound signals.· Mine fan unit in accordance with the safety rules ...