. OPERATION EXPLANATION OF COMPONENTS turn the air conditioner ON only when the engine is running. fresh air before starting the air conditioner. If you smoke when using the cooling, your eyes may this happens, switch temporarily to cooling and ventilation to remove the smoke. INSPECTION AND MAINTENANCE 3 - 63 PRECAUTIONS WHEN USING AIR CONDITIONER compresso Perform ventilation from time to time when using the cooli When turning the co oling on, if the temperature i nside the cab is h igh, o e door s and windows to brin g in sting.
I When using the air c onditioner for a long time, pe rform ventilation and c ooling once e very h Be careful not to cool the For reasons of health, t he optimum setting for coolin g is c onsidered t o be w hen it feels s lightly cool (5 o r 6 °C ( 9 or 10.8°F) lower than the a mbient temperature) when y ou enter the cab. Do n ot mak e the t emperature inside 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 co nditioner cooling circuit , oper ate the air conditioner for several minutes 2 or 3 times a month during the off-season. If the air conditioner is left for a long time when the refrigerant is leaking, it may cause internal rust. Even when not using t he air conditioner, run the c ompressor a t low spee d for several minu tes o nce a wee k to prevent the loss of the oil film at various parts of er to the central position.) the compressor. (Run the engine at low speed and set the ompressor.
(Run nd set the temperature control lev When cleaning the air c onditioner air filter or checkin g the refrigerant level, see " CLEAN AIR C ONDITIONER AIR FILTER (PAGE 4-33)" and "CHECK REFRIGERAN T (GAS) LEVEL (PAG E 4-34 )" for d etails. To enable the air condit ioner to perform to the full an d to maintain a pl easan t work ing environment, always contact your Komatsu distributo r to have the air conditioner refille d with r efrigerant and to perfor m oth er checks