检查各换向阀电磁铁动作是否灵活。
Check to know the electromagnet reaction of the reversing valve.
定期检查吸入、呼出阀盘动作是否灵活，导杆及阀盘接触密封面有无损坏，如有损坏应立即更换。
Regularly check whether actions of inhalation, exhalation discs are flexible, and the sealing contact surface of leader and disc is damaged, if so, should be replaced immediately.
检查电气接线是否正确连接，操纵开关是否动作灵活可靠。
To test the electrical wiring is connected correct or not, whether the operating switch is flexible or not.
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