Stainless steel horizontal multistage centrifugal pump at runtime will encounter a series of problems, such as inadequate flow, head enough, playing no water pump, damaged parts, electrical fault burned. When in the face of these problems, how to deal with it? Vanda pump through the collection of data to sort out a number of related solutions for your reference.
Want to solve these problems, we must first know the use of stainless steel horizontal multistage centrifugal pump and how to repair.
First of all: 1, test motor rotation, looking from the motor to the pump, the pump counterclockwise rotation. Remember, the test time is shorter so as to prevent mechanical seal dry wear.
2, open the exhaust valve allows liquid to flow into, to be filled with liquid and then turn off the pump discharge valve.
3, various parts of horizontal multistage centrifugal pump check whether there is an abnormality.
4, with a lubricating fluid lubricated mechanical seal end face.
5, high temperature type horizontal multistage centrifugal pump should be preheated heating rate of 50 ℃ per hour.
Second: 1, open the inlet valve, close the discharge outlet valve.
2, starter motor, observe the pump is functioning correctly.
3, according to the required conditions regulated outlet valve opening, shall ensure that the motor is running at rated current, otherwise it will cause the pump to overload the motor burned out.
4. Check the seal leaks, mechanical seal leakage should be less than 3 drops / minute of normal time.
5, check the motor, the bearing temperature should be less than 70 ℃.
Finally: 1, first type multistage pump hot cooling, the cooling rate is less than 10 ℃ / min, the temperature drop below 80 ℃.
2, close the discharge outlet valve.
3, stop the motor.
4, close the inlet valve.
5, if the pump is not long-term use, should pump the liquid drain cleaner.