OPERATOR'S STATION TIPS FOR OPTIMAL AIR CONDITIONER USAGE For Rapid Cooling Temperature in the cab may rise over 80°C (176°F) when the machine is exposed to sun light in the summer. In this case, ventilate air in the cab first by opening the windows for rapid cooling. After starting the engine, press AUTO switch (9). Set temperature to 18.0 on LCD (7) us- ing temperature control switch (11). Turn circulation mode switch (12) ON. 7 9 When Windows Become Clouded If the insides of the windows become clouded during rainy weather or on humid days, operate the air conditioner to aid in keeping the windows clear.
When the atmosphere is very damp, and if the air conditioner has run excessively, the out- side of the windows may become clouded. If this happens, turn off the air conditioner to adjust the temperature in the cab. 11 12 M178-01-081 Off-Season Air Conditioner Maintenance To protect each part of the compressor from a lack of lubri- cant, operate the air conditioner at least once a month for several minutes with the engine running at a slow speed during off-season. When the cab temperature is lower than 15°C (59°F), the air conditioner may not operate. If this hap- pens, warm the cab using the heater first. Air Conditioner Sensor IMPORTANT: Do not suddenly increase the engine speed.
Refer to the item “Check Air Conditioner Filter” in the Maintenance Section for maintenance of the air conditioner filters. Always clean the auto air conditioner sensor for effective air conditioner per- formance. Avoid placing any obstructions around the sensor. M1J1-01-028 1-65