1. In order to reliably suction vane pump, its speed must be in the range of 500 ~ 1500r / min, and when the speed is too low, the blade can not be pressed against the inner surface of the stator and the sucking; is caused by the pump speed is too high "cavitation" phenomena pump is not working properly. To choose the appropriate viscosity of the oil, the viscosity is too variable pump. Care, oil resistance increases; oil too thin, the gap affects the variable pump. Maintenance, the vacuum is not enough, the suction will cause adverse effects. 2. vane pump for oil is very sensitive to dirt, poor reliability, oil will clear the blade stuck, so you must pay attention to the good oil filter and clean environment. 3. Because of the vane pump mounting inclination, it only allows unidirectional rotating rotor, variable pump should not be used in reverse. Training, otherwise it would break the blade. Low low speed test run: Repeat start and shut down the motor variable pump, the pump and the suction air release. Ten percent of the input pressure and flow, open radio station forward and backward motion, flow and pressure so that the exhaust valve. Running ten minutes later, as the hydraulic system no abnormal sound, you can boot. If you stop using the machine again after a period of use should also do so to boot. Variable pump. Maintenance, crystal create a hydraulic (certified), variable pump provided by Jinan Jing Chong Hydraulic Machinery Co., Ltd .. 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.