一、液压万能试验机主机保养：
Maintenance of main engine of hydraulic universal testing machine:
1、机械所配的夹具应涂上防锈油保管;1. The fixture equipped with the machine should be coated with rust-proof oil for storage.
2、由于液压万能试验机的钳口经常使用，容易磨损，氧化皮太多时，容易导致小活塞损伤漏油，所以钳口处应经常扫除，坚持清洁(最好每次做完试验后进行清扫);2. Because the clamp of hydraulic universal testing machine is often used, easy to wear and tear, and when the oxide scale is too much, it is easy to cause damage and oil leakage of small piston, so the clamp should be cleaned regularly and kept clean (preferably after each test);3、镶钢板与衬板接触的滑动面、衬板上的燕尾槽面应坚持清洁，按期涂一层薄的MoS2(二硫化钼)润滑脂;3. The sliding surface and dovetail groove surface of the lining plate should be kept clean, and a thin MoS2 (molybdenum disulfide) grease should be coated regularly.
4、按期检查钳口部位的螺钉，如发明松动，实时拧紧;4. Check the screw at the nipple regularly, if it is loose, tighten it in time.
5、按期检查链轮的传动情况，如发明有松动，请将张紧轮重新张紧;5. Check the transmission of sprocket regularly. If loosening is found, please re-tighten the tensioning wheel.
二、控制系统保养：
2. Maintenance of control system:
1、按期检查控制器后面板的连接线是否接触良好，如有松动，应实时紧固;1. Check regularly whether the connection wire of the back panel of the controller is in good contact. If it is loose, it should be tightened in time.
2、试验后若有一段较长的时间不必机械时，关闭控制器和电脑;2. Turn off the controller and the computer if there is a long period of time after the test when the machine is not used.
3、控制器上的接口为一一对应，插错接口可能对设备造成损坏;3. The interface on the controller is one-to-one correspondence, and the wrong interface may cause damage to the equipment.
4、插拔控制器上的接口必须关闭控制器电源。
4. The interface on the plug-in controller must turn off the power supply of the controller.
三、油源的保养：
III. maintenance of oil source:
1、按期检查主机和油源处是否有漏油的地方，如发明有漏油，应实时更换密封圈或组合垫;1. Check regularly whether there is oil leakage in the main engine and oil source. If oil leakage is found, the sealing ring or combination gasket should be replaced in time.
2、凭据机械的使用情况及油的使用期限，按期更换吸油过滤器和滤芯，更换液压油。
2. According to the use of the machine and the service life of the oil, the oil-absorbing filter and filter element are replaced regularly, and the hydraulic oil is replaced.
3、长时间不做试验时，注意关断主机电源。如果机械在待机状态，转换开关应打到加载档，因为如果转换开关。
3. When the test is not done for a long time, turn off the power supply of the main engine. If the machine is in standby state, the switch should be put in the loading file, because if the switch is in standby state.