定期改换液压油与过滤器
Regular replacement of hydraulic oil and filters
好的液压油含有多种添加剂，这些添加剂可避免油蜕变。
Good hydraulic oils contain a variety of additives, which can avoid oil degeneration.
但是添加剂在一段时间之后会丧失功效，所以液压油要定期改换，确保添加剂发挥作用。
But the additives will lose their efficacy after a period of time, so the hydraulic oil should be changed regularly to ensure that the additives play a role.
过滤器只能从油中吸收有限数量的污垢粒子和其它杂质。
The filter can only absorb a limited amount of dirt particles and other impurities from the oil.
改换液压器滤器时，检查过滤器能否有金属颗粒或碎屑；如有铜或铁屑标明液压泵、液压马达或阀可能已损坏或将要损坏，如有橡胶类则表示液压油缸密封件损坏。
When replacing the hydraulic filter, check whether there are metal particles or debris in the filter; if there are copper or iron scraps indicating that the hydraulic pump, hydraulic motor or valve may be damaged or will be damaged; if there are rubber, it means that the seal of hydraulic cylinder is damaged.
二、定期排放油箱污物
2. Regular discharge of tank contamination
定期放出油箱中的水和沉淀物，关于肃清油中杂质重要，但是定期改换整个液压系统中的液压油也重要。这是完整肃清系统杂质、被氧化的液压油和其它有害杂质的独一牢靠的办法。
Regular discharge of water and sediment in the tank is very important for removing impurities in the oil, but regular replacement of hydraulic oil in the whole hydraulic system is also very important. This is the only reliable way to completely remove impurities in the system, oxidized hydraulic oil and other harmful impurities.
每隔250工作小时排放液压油箱贮油槽污物。
Discharge contamination from tank of hydraulic tank every 250 working hours.
三、清洗
3. Cleaning
假如柱塞泵液压油遭到污染，特别当液压泵或液压油缸、马达遭到损坏时，必需改换全部液压油并清洗油箱。
If the hydraulic oil of plunger pump is polluted, especially when the hydraulic pump or hydraulic cylinder and motor are damaged, it is necessary to replace all the hydraulic oil and clean the tank.
坚持工作区域清洁。
Keep the working area clean.
向油箱中补充参加液压油或重新参加液压油时，过滤器箱盖四周区域清洁。
When the hydraulic oil is added to the tank or re-joined, the area around the filter cover is cleaned.
只能运用清洁的漏斗或容器。
Only clean funnels or containers can be used.
切勿将脏物带入系统中。
Do not bring dirt into the system.
维护液压系统时，只能将清洁的塑料塞头用于密封管路的端部。
When maintaining the hydraulic system, only clean plastic plugs can be used to seal the end of the pipeline.
维护液压部件时，工作台必需清洁。
When maintaining hydraulic components, the worktable must be absolutely clean.
检查运用工具的情况，，它们也应十分清洁。
Check the use of tools, they should also be very clean.
