Plastic pneumatic diaphragm pump common fault

1. Engineering plastic pneumatic diaphragm pump can not start or move slowly A, check the filter, pressure and lubrication devices and air inlet filter is blocked. B, check whether the gas valve is stuck by impurities, please remove the valve and clean it, check the valve piston is scratched marks. If the piston surface is bright and not black, it means that worn piston and "O" rings need to be replaced. C, check the spindle and the "O" ring for scratches, wear and crushed traces, replace if damaged. 2. Engineering plastic pneumatic diaphragm pump in operation but the flow is too low A, check whether the pump cavity plaque, adjust the compressed air inlet pressure. Reduce the pump speed to adjust the viscosity and concentration of liquid. B, check the valve ball is stuck. If the delivery of liquid and valve ball material does not match. The ball will be swollen Please replace the ball and seat of the suitable material. C, please check if the inlet pipe is blocked. 3 plastic pneumatic diaphragm pump leakage from the gas chamber leakage A, check whether the diaphragm rupture. B, check the diaphragm is installed and locked properly. 4. Plastic pneumatic diaphragm pump liquid outlet contains a lot of bubbles A, check whether the diaphragm rupture. B, check whether the pump body and pipeline leakage (engineering plastic pneumatic diaphragm pump common fault)

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