2. Since the inlet pipe is too long to exceed the self-priming capacity of the self-priming centrifugal oil pump, if the pipe in which the inlet pipe is submerged in the oil is more than 1 m, it is recommended to shorten the pipe length in the oil to reduce the self-priming distance.
3. The self-priming centrifugal oil pump has not sucked up the oil, so there is no oil at the end of the outlet pipe. Some users understand the situation as the reason that the lift is not reachable, so the outlet should be equipped with a ball valve and pressure gauge and the pressure gauge should be Installed between the pump outlet and the ball valve, Botaibang determines whether the oil is sucked up by observing the outlet pressure.
4. Self-priming centrifugal oil pump selection error The actual working condition is too high, and the lift of the self-priming centrifugal oil pump can not meet the actual working conditions. The solution that this lift can not reach can only replace the high lift.
5. The liquid to be transported contains debris particles. Since the pipeline or the pump body is clogged, the lift can not be reached, and the recommended transportation of the dirty oil is more suitable.
6. The transported liquid is highly corrosive. The impeller of the self-priming centrifugal oil pump encounters severe corrosion. It is recommended to use corrosion-resistant self-priming centrifugal oil pump products such as stainless steel "target=_blank> stainless steel or cast steel self-priming centrifugal oil pump, or After a long period of use, the impeller encounters a gap between the worn impeller and the pump cover, and the lift is not reached. It is recommended to replace the new self-priming centrifugal oil pump impeller.
7. The self-priming centrifugal oil pump head purchased by the user is wrong with the self-contained motor. For example, the actual motor of 2900r/min is required and the user is equipped with a motor of 1450r/min.
Flow stabilization method:
For the first time, the self-priming centrifugal oil pump must be filled with the pump body as the oil for the drainage. The suction pipe should be absolutely sealed. The flow instability is normal when starting the start, because the air is exhausted and stabilized.
Self-priming centrifugal oil pump use sequence 1. Import fully open, close the outlet valve
2. Fill up the irrigation oil (first use, pay attention to monitoring later)
3. Start the oil pump and open the valve to a size of one-third, wait for the oil pump to empty the air (see the state of the oil pump to determine whether to empty the air)
4. The outlet valve is fully open and used normally. 5. Is the liquid oil or mud? In the case of mud, the flow head will decrease. The flow heads calibrated by the oil pump are all true for clear oil. Too sticky media has a large impact.
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