In the installation of wastewater lifting pumps have the following requirements:
1, integrated wastewater lifting pump coupling must be good with the nut and lock nut, to prevent the nut from loosening, otherwise easy to cause impeller fluctuation, resulting in mechanical failure.
2, in the integrated wastewater lifting pump and motor direct drive, should pay attention to the pump shaft and motor output coaxiality; pump installation of accurate or not on the pump's smooth operation and service life has a greater impact, so it must be carefully and conscientiously installed calibration.
3, in order to make comprehensive wastewater lifting pump body can maintain a certain amount of storage liquid, in order to achieve better self-priming ability and to prevent the mechanical seal of the dry friction, must make the pump inlet is higher than the center line of the pump shaft.
4, the installation of the suction pipeline should pay attention to:
A, the installation height of the suction port can not be more than 5 meters, in conditions permitting, the suction port installation height should be as far as possible below the lowest storage plane of the pool, and try to shorten the length of the suction pipe, less elbows, which will help to shorten the self-priming time to improve the function of self-suction.
B, inhalation pipeline valves, flanges, etc. should be strictly prevented from leakage or leakage of liquid, that is, the inhalation pipeline is not allowed to have air leakage phenomenon exists.
C, the pump should be prevented from inhaling solids and other debris, the suction line should be set up for this filter. The effective water area of the filter should be 2-3 times of the cross-section of the suction pipe, and the filter should be checked regularly.
D, the suction line and spit out the pipeline should have their own support, the pump itself is not allowed to bear the load of the pipeline.
5, the installation of integrated wastewater lifting pumps should be strictly check the pump casing and piping for stones, iron sand and other debris.
6, calibration of integrated wastewater pump coupling and electric motor coupling installation clearance and coaxiality, the allowable deviation of its different axes is 0.1mm. pump shaft and motor shaft height difference can be adjusted in the foot of the copper or iron pad.
7, integrated wastewater lifting pump in the installation, should make the pump and pipeline electrostatic grounding resistance to meet its specified requirements.
8, in the unit after the actual operation of 3-4 hours, for the final check, such as no adverse phenomena, then the main installation has been properly, in the test run should check the shaft.
9, integrated wastewater pump bearing body where there is a cooling chamber device cooling water fittings for the allocation of bore 12 hose or plastic pipe, the thread size of M12x1.75.
10, in the integrated wastewater pump outlet pipeline, such as equipped with check valves in the process of self-priming does not allow the pump to discharge the gas smoothly, the pump should be added at the exit of the exhaust water pipe and valve.
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