How does the centrifugal pump pump and cut the pump?
Can not be generalized, the pump is divided into many categories, centrifugal, reciprocating, screw type, diaphragm type, and so on, the starting steps of each pump is not the same. The following is the centrifugal pump and reciprocating pump to do a simple introduction. Check the items and so on.Centrifugal pump: first open the pump inlet valve, pump exhaust, and then start the motor, slowly open the outlet valve. If it is a high speed motor or multi-stage pump, open the motor before the outlet valve slightly open.Reciprocating pump: slightly open the inlet valve of the pump, fully open the outlet valve. After starting the motor, at the fully open inlet valve.Here is a brief introduction. I hope it works for you.
Check the motor, pump and fasteners in good condition; whether the lubricant is added or not;Disc dynamic coupling, whether or not stuck phenomenon;Open the inlet valve, remove the gas in the pump or pump the gas out of the pump;
Turn on the motor, observe the motor current, turn from high to low, observe the pump outlet pressure, and the pressure rise;Slowly open the outlet valve, so that the pressure drop slowly, the current slowly rising to the stable, the outlet valve to the maximum;Check the pump operation, stuffing box leakage, current, whether or not the rated current, motor, bearing temperature is normal, whether or not abnormal sound.
