Immediately press the button, slowly adjust the relief valve hand wheel, if the filter plate filter press at this time has been tight top, the pressure will gradually rise, when the rose 25mPa, the contact pressure gauge pointer limit, the motor stops immediately When the fuel tank pressure dropped to 18mPa, press. gauge pointer at the contact limit, the motor will start on its own, the pressure slowly rises. repeated check, the fixed relief valve hand wheels, so the pressure was maintained at 18-25mpa between, so a filter press. When there is enough pressure on the top tight
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