Precautions for the use of hydraulic pumps

1. When the hydraulic pump is started, it should be jogged several times. After the oil flow direction and sound are normal, run it under low pressure for 5 to 10 minutes, and then put it into normal operation. Before the plunger pump is started, the pump must be filled with clean working oil through the drain port on the casing.

2. The viscosity of the oil is affected by the temperature, and the viscosity of the oil increases with the increase of the oil temperature. Therefore, the oil temperature is required to be kept below 60 °C. In order to make the hydraulic pump work stably at different working temperatures, the selected oil should be It has oil temperature characteristics that the viscosity is less affected by temperature changes, as well as good chemical stability and anti-foaming properties. It is recommended to use L-HM32 or L-HM46 (GB11118.1-94) anti-wear hydraulic oil.

3. The oil must be clean, and must not be mixed with mechanical impurities and corrosive substances. The hydraulic system without filter device on the oil suction line must be refueled to the fuel tank by an oil filter truck (filtering accuracy less than 25μm).