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 The pressure differential to, open the drain valve of the machine for cleaning sewage filtration time to stop the clock, sewage time to start the timer; sewage time to close the drain valve, stop cleaning the sewage, sewage time to stop the clock, the filtration time start time, so on ad infinitum. 




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 Pressure indicate the adjustment of the instrument (Figure 9): 



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 Differential pressure indicator has been adjusted at the factory, the differential pressure value 0.5Bar. An adjustment screw on the side of the low pressure on the connection side of the differential pressure indicator, this screw adjustment screw for the pressure value. Clockwise direction (ie screws to the inside to tighten the direction) adjustment screw circle, the pressure difference increases. 
 06Bar; each counterclockwise (ie, the screw out loosen direction) to adjust the nail circle, reduced pressure value