Pneumatic diaphragm pump action, but the flow is small or no liquid out: 1. Check the cavitation of the pneumatic diaphragm pump and reduce the speed of the pump to allow liquid to enter the chamber. 2. Check whether the valve ball is stuck. If the operating fluid is incompatible with the pump elastomer, the elastomer will swell. Please replace the appropriate material elastomer. 3. Check the pump inlet connector is completely tight leak, especially near the entrance end of the valve ball to be locked. Pneumatic diaphragm pump air valve Icing: Check the compressed air moisture content is too high, the installation of air-drying equipment Pump pneumatic diaphragm pump outlet bubble generation: Check the diaphragm is broken, check the clamp is locked, especially the inlet pipe clamp. The product flows out of the air vent: Check the diaphragm is broken, check the diaphragm and the clamp inside and outside the clamp on the shaft Valve rattles: increase export or import lift. Suzhou pneumatic diaphragm pump removal and reassembly guide: WARNING: Before working on the pump, first remove the air source tubing from the pump and vent the air pressure in the pump. Remove all tubing that connects to the pump inlet and outlet, and drain fluid from the pump into a suitable container. Wear protective cap, glasses, gloves No action or slow pump operation: 1. Inspect the filter or air filter at the air inlet for impurities. 2. Check the air valve is stuck, with a cleaning fluid cleaning air valve. 3. Check air valve for wear and tear, replace new parts if necessary. 4. Check the center of the seal parts condition, if severely worn, you can not achieve the sealing effect, and the air will be discharged from the air outlet. Due to its special construction, use only GLYD circles. 5. Check the air valve piston activity is normal. 6. Check the type of lubricant. If the added lubricant is above the recommended viscosity, the piston may get stuck or malfunction. Recommend the use of thin and antifreeze lubricants. (ISO grade 15 / 5WT antifreeze oil