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Centrifugal pump stop running after any requirements? ①Centrifugal pump should be shut down after stopping the pump population valve, to be cooled and then turn off the auxiliary system valves. ② high-temperature pump should be stopped according to the provisions of technical documents, after parking should be partial 20 -30 30min half a turn until the pump temperature dropped to 50 ℃ so far. ③ cryogenic pump parking, when no special requirements, the pump should always be filled with liquid; suction valve and the discharge valve should be kept normally open state; the use of double-end mechanical seal of the cryogenic pump, liquid level controller and seal the liquid seal chamber The pump grouting pressure should be maintained. ④ transport easy to crystallize, easy to coagulate, easy precipitation and other media pump, stop the pump should be blocked, and timely flush with water or other media pumps and pipes. ⑤ discharge liquid stored in the pump to prevent corrosion and cracking. Centrifugal pump storage ①not yet installed on the unpainted pump surface should be coated with a suitable rust inhibitor, oil-lubricated bearings should be filled with the appropriate oil, grease-lubricated bearings should only be filled with a Grease, do not use mixed grease. ② a short time pump clean liquid, flushing, suction lines, discharge lines, pump housing and impeller, side by side net pump housing, suction lines and discharge lines in the flushing fluid. ③ drain the oil bearing box, then add clean oil, thoroughly clean the grease and then fill the new grease. ④ The suction port and exhaust port sealed up, the pump stored in a clean, dry place, to protect the motor windings from damp, with anti-rust liquid and anti-cavitation spray pump housing inside. ⑤ pump shaft rotation once a month to avoid freezing, and lubrication of bearings.
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