RY air-cooled heat pump maintenance methods

How to maintain the pump? Here is the RY-type air-cooled heat pump Maintenance methods introduced. RY-type air-cooled heat pump maintenance methods (1) the pump shaft is equipped with a stuffing box at the front, the sealing performance is more reliable, while the mechanical seal in the bearing sea-----

DJ1 AC Drive Electric Locomotive

Research and Development of DJ1 Type AC Drive Electric Locomotives Chen Hanqin\ Shi Weijun 2 (1. Zhuzhou Siemens Traction Equipment Co., Ltd., Zhuzhou 412001, Hunan, China; 2. Siemens AG, Transportation Technology, Ellanden, Germany) DJ1 Type AC Drive Electric Locomotive General Parameters , Trac-----