Diaphragm pump maintenance and other types of pumps are different, the main points are as follows: 1, the pump valve inspection should pay attention to whether the seal ring aging deformation, spring elasticity is seriously reduced, the valve port and valve core wear and tear, corrosion and other defects, 2, the diaphragm replacement, the disassembly pump head should be hoisted in advance to prevent damage to the fall; 3, the adjustment mechanism disassembly to calibrate the stroke length position ( Stroke length of 5mm), remove the scale seat, slide the scale ring into the calibration position, the measured stroke length should be exactly the same scale; 4, the piston removal, the use of special pointed tool to the packing ring from its slot Take out, be careful not to damage the ring groove; 5, worm gear to be checked, the teeth should be intact, there should be no cracks or broken teeth, the installation to check the engagement conditions.

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