It is strictly prohibited to idle without any medium. Before starting the vehicle, please be sure to add lubricating medium or conveying medium.
2. It is strictly prohibited for any debris, welding slag, etc. to enter the pump chamber, and the cleanliness of the pump chamber and pipeline interior must be maintained.
3. It is strictly prohibited to use pipeline filters or Y-shaped filter devices. When configuring filters, please ensure that the filtering area is 20-30 times the cross-sectional area of the pump inlet diameter. And correctly configure the mesh size of the filter screen based on the cleanliness of the medium.
4. It is strictly prohibited for the inlet and outlet pipelines of the pump to be mismatched with the inlet and outlet pipelines of the pump. The pipe diameter configuration must be consistent with the inlet and outlet diameter of the pump. To prevent cavitation or inability to self suction. A thin pipeline will inevitably lead to cavitation, causing the pump to operate in a state of not being able to eat enough, resulting in a decrease in flow and pressure of the three screw pump group, and even abnormal vibration and noise. Long term operation will also cause serious damage to the pump and screw pump,
5. The installation height of a three screw pump must fully consider the cavitation conditions of the pump and the self-priming capacity of the pump (cavitation allowance is related to the viscosity, speed of the medium, and lead of the screw)
6. Due to the effects of packaging, transportation, lifting and unloading, as well as the tightening of pipeline bolts, the original factory positioning of the pump may change or even be severely misaligned. Therefore, after the installation and fixation of the three screw pump piping system, it is necessary to recheck the coaxiality of the three screw pump and motor before starting and driving.
7. It is strictly prohibited to start the machine with back pressure and close the inlet and outlet valves.
8. It is strictly prohibited to start rotation in a direction that does not comply with the pump rotation label.
9. Double pumps in parallel must be equipped with one-way valves at the outlet and inlet of the pump to prevent the medium from flowing back and driving the three screw pump to reverse.
10. It is strictly prohibited to adjust the safety valve bolts arbitrarily. The safety valve is only used to protect the safety of the pump and match the motor power with the working state of the pump. It is strictly prohibited to use it as a pressure regulating valve and overflow valve.
