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  4. Why the pump pressure switch starts and ...

Why the pump pressure switch starts and stops frequently?

Why the pump pressure switch starts and stops frequently?

The possibilities are as follows:


1:The automatic water supply system should start when the water pressure is below the minimum setting value and stop when the water pressure is above the maximum setting value,When your pipe is relatively short, pipe pressure changes more frequently, Even if you turn on the tap a little bit, the pump will start.So you need to add an air storage tank, put the mouth down when installation, tank volume determines your pipe pressure stability and the frequency of pump start-up.The larger the tank volume, the more stable the pipeline pressure could be adjusted, also the longer the start-up time interval of the pump.


2:Due to the long distance and high height of conveying, the required pressure is large, and the pressure set on the pressure switch can not meet the operational requirements, this can be done by first opening the controller housing and then turning the adjustment Knob in the middle clockwise to obtain a higher break pressure.



3:The reason for frequent start-up of the fully automatic self-priming pump may also be due to the fact that there is no gas in the pressure tank above the self-priming pump, the gas-filling nut on the pressure tank can be twisted open and add gas to the tank so that the pressure tank can play a stabilizing role,It should be noted that does not each type of fully automatic suction pump has the function of adding air to the pressure stabilizing tank. For example, the ordinary domestic self-suction pump has no air hole.


4:There is no check valve installed on inlet and outlet position,this will leadto a rapid return of water after stoping the pump .outlet pressure drops so lower than the pre-set pressure ,Which in turn led to  the automatic pump frequently start ,and the solution is adding a check valve at outlet.


5:The self priming pump will start automatically if the TAP is not turned off properly or if the outlet pressure drops due to the outflow of water from other places, check the tap off state, find out where there is leakage is the solution of automatic suction pump frequently start-up. Start and stop  frequently will not happens on Hm Domestic self-priming pump for tap water if the water leakage is not serious.



6:If full automatic suction pump has been used will good state for a period before the frequent start and stop happen,then it is possible that the automatic switch or pressure switch is broken, you can replace one to see if there is a failure.




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