This symbol marks such tractor

33CONTROLS∗ AC CONTROLThe switch with symbol of flake controlsair-conditioning.It is necessary to create overpressure inthe cab for the proper function of AC.Thatřs why we recommend to shut allwindows, doors and cab roof cover.F 50 F 51 F 52COOLING THE CABFor fast cooling the inner space of cabmove the heating shut off lever (2) intothe left position (i.e. fresh air inlet isclosed). Choose the desired blowerspeed by the four speed blower switch(position 1, 2, 3). Set outlets with desiredangle to avoid direct blowing to personsin the tractor cab (possible injurybecause of intensive cooling of person řsbody).AC OPERATIONWith switched AC and permanentlyclosed heating shut off lever (2) in leftposition (i.e. fresh air circuit closed) theinner air is breathed out. Persons couldbecome tired. Thatřs why we recommenddo move the lever (2) into the rightposition (fresh air opened) immediatelyafter cooling down and reduction of theinner temperature to desired level. Thefluent regulation of system is carried outby partial opening of the heating valvewith heating control lever (3).At the same time dry air from AC systembecomes moisture by this way.