2. Pump start and stop (1) before cranking pump rotor should slip even light. (2) Turn off the water valve, to pump water (if there is no foot valve is used vacuum pumping water) 500S-22 double suction pump, make sure the pump is filled with water, no air harbored. (3) If equipped with a vacuum table or on the pump gauge 500S-35 double suction pump, to close its cock pump connected to restart the motor, the speed to be normal after the open, then gradually open the water valve. (4) Tighten the compression nut evenly tighten the packing gland on the liquid into droplets leaking out, bearing in mind the temperature at the packing chamber. (5) When the pump stops running first close the vacuum gauge and pressure gauge cocks and outlet line of valve 500S-22A double suction pump and cut off electrical power. (6) Long-term use should be open to stop the water pump, the water on the part Sassafras dry machining surface coated with anti-rust oil keep them safe. 2. The rotor assembly and the pump assembly (1) Cleaning pump seal ring double suction pump, and deburring; (2) the pump body open flange sealant coated surface or mounted in line with a flange-shaped 0.3mm Shell Green Paper pad (should be determined according to the specific requirements of each pump is coated with sealant pad or pads of paper); connecting bolt, fitted with grease cup, and finally installed temperature measurement element 500S-22A double-suction pumps | double suction pump. | Manufacturers Ltd provided by Shijiazhuang-send pump. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) strong, credible, and other industries in other Shijiazhuang, Hebei accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shijiazhuang-faction pump into the brilliant and you work for a better future!