Details common faults and solutions of metering pump

Published on 2018-06-21
Details common faults and solutions of metering pump
 
Metering pump may often be some small fault in the long-term use, then if we can master the appropriate solution, metering pumps use efficiency will certainly be improved, the following common faults and solutions specific description metering pump: a Remove the old membrane advice: head by loosening four screws, mobile hydraulic side. Rotary stroke length to 0% and to seize the liquid end, then slide out of the screw holes, then the screws are not in contact with them, but also dominated the back plate and the diaphragm. Then this part is rotated counterclockwise, slightly drag down from the electromagnetic diaphragm loosen the shaft. If the diaphragm has not been loose, the contact surface of the diaphragm and the solenoid shaft with some oil. After standing a few minutes, use a plastic hammer to tap the diaphragm. Then follow the above described again. Second, the solution when using self-priming mode measurement of hydrogen peroxide, a method to generate cavitation within the system: install metering pump self-venting pump head with self-fill pipette. Keep the suction line as short as possible. Third, replacement of diaphragm metering pumps methods and steps: A. Remove the four screws holding the pump head. Screw position at the back of the metering pump; B. after a loose head, remove the head before adjusting the stroke length to 0% position. To ensure there is enough pressure solenoid shaft, maintaining that it is secure, so that you can unscrew the diaphragm; C. Pull out hydraulic end so that the screw is disengaged from the jack. Seize the liquid end counter-clockwise. Some little resistance, you can unscrew the diaphragm; D. Once the membrane is removed, check the safety diaphragm metering pump, make sure it is intact, without any damage. Install new diaphragm clockwise until snapping back and the diaphragm. Adjust back, so leakage discharge hole located at the bottom of the pump; E. completed the installation of the diaphragm and backplate leakage discharge hole in the vertical position, the installation of the pump head. To ensure that the suction valve leakage and discharge holes are aligned, fluid end of the screw with the corresponding four holes are aligned; F. rotation stroke length to 100% position. This can make the whole member is rotated to the bottom of the backplane leakage discharge hole is aligned with the pump. Adjusted during operation of pump fluid end and the diaphragm to the appropriate position; G. When the hydraulic end position back together after a good tune, four bolts diagonally tightened, until the appropriate date. Should finish the work force uniform