Low low speed test run: Repeat start and shut down the motor, the pump and the suction is released in the air. Ten percent of the input pressure and flow, open radio station forward and backward motion, flow and pressure so that the exhaust valve. Ten minutes after the operation, such as the hydraulic system without abnormal noise variable pump, you can boot. If you stop using the machine again after a period of use should also do so to boot. Variable speed pump finishing in constant conditions, the pressure constant output flow can be mobilized for the variable vane pump, constant pressure and flow are not adjustable for quantitative vane pump. Their biggest difference is that the variable vane pump shaft is installed then the heart. After speaking simple quantitative vane pump speed is selected, he would certainly flow and pressure, it can not recuperate. Output flow variable vane pump according to the hydraulic system pressure changes (external load size) automatically flow conditioning, high output pressure is low flow, low pressure output flow, so that he can save the number of hydraulic components, thus simplifying the hydraulic system, and can reduce oil heat. The disadvantage is that the variable pump flow pulsation serious care, the hydraulic system pressure poised, short life of the pump, pump bearings easily broken, because he was then the heart of the installation, and the big pump bruit. By conditioning eccentricity vane pump, piston slide angle can be achieved through the conditioning variables. Quantitative vane pump works: sealed volume of the stator and rotor valve plate is composed of a number of variable vane pump division specializing in the rotor per revolution one week, twice each in a sealed space to complete the suction and pressure oil, so called quantitative blade pump. Variable vane pump works: variable vane pump can pitch by changing rotor and stator eccentricity e conditioning pump flow to the hydraulic system at work feeding the energy use of justice, the effectiveness of the high, low temperature of the oil. Eccentric actually change from e achieved only by moving the stator, the rotor and shaft position is defined by the axis of the prime mover, the variable displacement pump maintenance | crystal create a hydraulic (certified) | variable hydraulic pump by Jinan Jing Chong Machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) Shandong Jinan, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In the crystal to create a hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the crystal to create a better future for the hydraulic.