11. EXPLANATION OF COMPONENTS 11.8.2 COOLING OPERATION l Control switches Ordinary cooling When control switches are used as shown, fresh cool air will be supplied into the cab. l Set switches NJ,@, and 0 in the positions shown. l Set switches 0 and 0 in the desired positions. Ventilation and cooling When the air in the cab gets dirty, move Inside-Ouside air changeover switch 0 to the outside air (FRESH) position to let outside air into the cab. --3 The other switches are used in the same manner as in or- dinary cooling. REMARK If ventilation cooling is used for many hours, the cooling effect may not be sufficient.
When the cab has been suffi- ciently ventilated, move Inside-Outside air selector switch 0 back to the inside air (RECIRC) position. q 2-30