Start Roots vacuum pump unit: 1. Open the intermediate pump and the main pump circulating cooling water inlet and outlet valves, circulating cooling out of the water to ensure the normal 2, close flush the buffer tank pump discharge valve, pump water will start to be operating normally (. After the motor and pump noisy equalization), slowly open the flush valve foreline pump bypass pipe and Roots vacuum pump inlet valve. 3, until the system pressure reaches the middle of the pump set allow Hou Luoci pump inlet pressure to start intermediate pump, such as through the use of automatic control block Roots vacuum supply prices, directly appropriated for automatic control gear to start the process is automated unit 4, such as manual control Roots vacuum outlets, when the intermediate pump discharge pressure reaches the main pump allows After the inlet pressure, starting the main pump. Roots pumping biggest advantage is having a high pumping speed at low inlet pressure, but it can not be used, there must be a stage series Roots vacuum pump manufacturers, is to be evacuated When the pressure in the system to be able to get the Roots vacuum pump foreline allow population pressure, vacuum pumps to start working, and in general, not allowed to work Roots vacuum high differential pressure, otherwise it will overload and overheating and damage, Therefore the use of Roots vacuum; a reasonable selection must foreline vacuum pump, install the necessary protective equipment. Roots pump supply price, Jinan Roots vacuum pumps, Zhucheng East Machinery Co., Ltd. by John Han Machinery Co., Ltd. Zhucheng East. Zhucheng East Han Machinery Co., Ltd. (www.dhlcfj.com) (www.dhlcfj.com) strong, credible, Shandong Weifang fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zhucheng East Han Machinery Co., Ltd. into the brilliant and you work for a better future!