. OPERATION DETAILED CONTROLS AND GAUGES the cab during into the cab or to Temperature Control Switch (Cooling) temperature becomes, as the indicator light moves to the "C". 3 - 42 Air Circulation Selector Switch (External Air Circu When swit ch (2) is p cooling. heating or This positi on is used in remove th e mist from the cab Air Circulation Selector Switch (Internal Air Circul ation) When swit ch (2) is p ressed, t he a ir inside the ca b is recalculated and no fre sh air is tak en in fro m outside. This posit ion is used when heating or cooling th e cab quickly or when the ou tside air is dirty.
The closer to the "C" mark the lighting-up is in the range, the lower the room t emperatur e is. Conversely the closer to the "H" mark the lighting-up is in the r ange, the higher the room te The indica tor range i s divided into 11 levels, but w ithin each range the temperature cha Use switc h (3) to red uce the t emperature. Press this switch to r educe the temperature of the air sent from the air c onditioner. The more times the switch is pressed, the lower the blowing wind