Requirements After The Centrifugal Pump Stops Running

① After the centrifugal pump stops running, the inlet valve of the pump should be closed. After the pump cools down, the valves of the auxiliary system should be closed in sequence.
② The shutdown of the high-temperature pump should be carried out in accordance with the technical documents of the equipment. After the shutdown, the pump should be turned half a circle every 20-30 minutes until the temperature of the pump body drops to 50 ℃.
③ When the low-temperature pump is stopped, unless there are special requirements, the pump should be filled with liquid frequently; The suction and discharge valves should be kept normally open; For low-temperature pumps with dual end mechanical seals, the liquid level controller and the sealing fluid in the pump sealing chamber should maintain the grouting pressure of the pump.
④ For pumps that transport media that are prone to crystallization, solidification, and sedimentation, blockage should be prevented after the pump is stopped, and the pump and pipeline should be flushed with clean water or other media in a timely manner Drain the accumulated liquid inside the pump to prevent rust and frost cracking.