Check and replace the O-ring of the piston head.
检查和更换活塞头的O型圈。
Check that the piston head is blocked due to the stickiness of the O-ring on it.
检查活塞头o型圈是否有粘性，使得活塞头堵死。
Thoroughly clean all parts exposed to material, including piston barrel, piston head, O-ring, one-way valve, filling head, feeding tank, hopper, etc. Damaged seal shall be immediately replaced.
应彻底清洗所有和物料接触的部件，包括活塞缸、活塞头、O型圈、单向阀、灌装头、料桶、料斗等，发现破裂损伤的密封应及时进行更换。
Thoroughly clean all parts exposed to material, including piston barrel, piston head, O-ring, one-way valve, filling head, feeding tank, hopper, etc. Damaged seal shall be immediately replaced.
应彻底清洗所有和物料接触的部件，包括活塞缸、活塞头、O型圈、单向阀、灌装头、料桶、料斗等，发现破裂损伤的密封应及时进行更换。
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