4D-SY / 3.5 electric pressure test pump working flow is divided into start-up, operation, stop three parts, then it should pay attention to what matters in the course of operation? (1) gear box in operation process Should be uniform noise, noise and blocking phenomenon. (2) gearbox lubricating oil should be maintained below 80 ℃, the maximum does not exceed 85 ℃. (3) If any sediment is found during the work, stop work immediately and carry out overhaul. No water leakage is allowed. (4) working pressure does not allow more than 3.5Mpa. (5) The cylinder should maintain a certain amount of air, to reduce the pressure gauge by the pump pressure pulse. Extended reading: Top ten brands of motor China Construction Water Exhibition Pump manufacturers ranked ptc exhibition industry Internet (Xiamen) Technology Co., Ltd. Asia Pump Network Editor: He Daohui (QQ / WeChat: 2355962924) http://beng.liuti.cn/ (service Hotline: 400-6030-811)