1. Monitor the state of the air filter element, the table pointer points to the red area (20 ~ 30 "water column 51 ~ 76cm) must replace the filter element;
2. When the air filter maintenance table points to the red area or half a year later when the unit is fully loaded, the air filter element should be replaced;
3. Replace the air filter element according to the need for maintenance after every 1000 hours;
4. When the inlet air filter core vacuum switch monitors the inlet air filter, it will automatically alarm if the pressure difference is too large;
Filters and other components are monitored by the corresponding instrument, if there is a problem, the monitoring instrument will send an alarm signal to replace the filter element
