. OPERATION EXPLANATION OF COMPONENTS turn the air conditioner ON only engine is running. Carry out ventilation from time to time when using the cooling. fresh air before starting the air conditioner. If you smoke when using the cooling, your eyes may sting. If this happens, switch temporarily to cooling and ventilation to remove the smoke.
INSPECTION AND MAINTENANCE AIR CONDITIONER AIR FILTER (PAGE 3 - 69 PRECAUTIONS WHEN USING AIR CONDITIONER compresso when the When turning the co oling on, if the temperature inside the ca b is h igh, o e door s and windows t o brin g in When using the air c onditioner for a long time, c arry ou t ventilation and cooling once every hour Be careful not to cool the For reasons of health, t he optimum setting for cooling is c onsidered t o be w hen it feels s lightly coo l (5 or 6°C ( 9 or 10.8°F) lower than the ambient temperature) when you en ter the cab.
Do n ot mak e the te mperatur e insid e the cab too low or direct the air flow directly onto your skin Be extremely careful to select the appropriate temperatur When cooling is not being used (off-season) To prevent leakage of t he refrigerant from the air c onditio ner cooling circuit , oper ate the air conditioner fo r several minutes 2 or 3 times a month during the off-season . If the air conditioner is left for a long time when the r efrigerant is leaking, it may cause internal rust. Even when not using t he air conditioner, run the compressor a t low spee d for several minutes o nce a wee k to prevent the loss of the oil film at various parts o f the compressor.
(Run the engine at low speed and set the ompressor. (Run the temperature control lev er to the central position.) Clean the air filter and check the refrigerant. For d etails, see " CLEA 4-29)" and "CHECK RE FRIGERANT (GAS) LEVE L (PAG E 4-30)". To enable the air condi tioner to perform to the full a nd to m aintai n a pl easan t work ing environment, alway s contact your Komatsu distribut or to have the air conditione r refille d with refrigerant and to carry o ut other c hecks