EXPLANATION OF COMPONENTS OPERATION 2. EXTERNAL/INTERNAL AIR CHANGEOVER SWITCH Changes between internal air circulation and external air intake. 3. TEMPERATURE CONTROL SWITCH This switch continuously adjusts the temperature between high and low. 94 Purpose Sending air to upper area of operator’s seat Sending air to lower area of operator’s seat Air outlets Purpose Internal air circuit. This is used when wishing to quickly cool or warm the cab or when the air inside the cab is stale.
External air intake This is used for fresh air intake or to remove condensation on windows Switch Purpose To low temperature To high temperature Switch Blue Red AA30813C Blue range indicates low temperature and red range high temperature. The range is divided into eight steps, each of which is continuously adjustable