PIN 1H6382 - Caterpillar

Cleaning of Filters
The cooling system filters should be cleaned regularly. The cleaning interval depends on the cleanliness of the air in the surrounding environment. The filters have to be cleaned when the temperature detectors in the winding show abnormal temperature or approach the alarm level.If a filter differential pressure monitoring system is being used, the filters should be changed immediately after a pressure alarm. The alarm level is such that 50% of the air filter surface is obstructed. The operating personnel should also manually inspect the filters frequently.Always remove the air filters for cleaning.If the surrounding air is sufficiently clean, the filters can be changed during operation.The filters must be cleaned regularly, always vacuuming first from the upstream side, and only then on the discharge side.Periodically, a thorough wash with clean water is recommended to release any dirt not removed by vacuuming.When heavy grease concentrations are encountered, the filters should be washed with a detergent solution. This solution should be rinsed thoroughly before returning the filter to service.Be careful to install the air filters in the correct direction. There are arrows on the air filter frame, to indicate the direction of airflow. Some filters can be installed in either direction.