How To Use It Correctly: Hydraulic Pumps (1) Start of the hydraulic pump. Before the pump is started, check the oil quantity in the fuel tank according to the oil level indicator to avoid cavitation caused by suction: Check the oil temperature with an oil thermometer to avoid the pump starting below 0 ° C. When the oil temperature is below 10 ℃, pay attention to the hydraulic pump to run for more than 20 minutes at no load; the pump should be started electrically. In the jogging, the flow of the pump is judged from the change in the sound of the pump and the change in the pressure of the pressure gauge. If the pump is running for more than 1 minute under no-flow state, there is a risk of seizure. (2) During operation and stop. Check for pump operation. If the noise is large, the needle pendulum is large, and the oil temperature is too high, the pump may be severely worn; check to understand the operating efficiency of the pump. Compare the temperature of the pump 売 and the fuel tank. If the temperature difference between the two is higher than 5 ° C, the efficiency of the pump can be considered very low; check the oil leakage of the shaft and the connection, and pay special attention to leakage at high temperature and pressure. (3) Observe the indicated value of the vacuum gauge installed at the suction pipe of the pump. During normal operation, the value should be below 127mmHg. Otherwise, check the oil tank and working oil. Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional China manufacturer and supplier of Hydraulic Pumps . Our products are widely used in cutting, plastic, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines and other fields. Welcome to purchase: https://www.china-vanepump.com/