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The maintenance of Filter
1、Bag and support of Filter；
2、Oil quantity and dropping speed in Air treatment Unit；
3、Sealing condition of Filter；
4、Tension of motor V-belt of Exhauster Fan；
5、Impeller condition of Exhauster Fan；
6、Oil level and oil quality of hydraulic coupler（Direct On Line）；
7、the inverter control cabin（Inverter Control）；
Bearing condition of Exhauster Fan；