What are the reasons for the failure of the pneumatic diaphragm pump?

The pneumatic diaphragm pump does not operate or operates very slowly:

1. Check the filter or air filter of the air inlet end of the diaphragm pump for impurities.
2. Check if the diaphragm pump air valve is stuck with the cleaning fluid cleaning valve.
3. Check if the diaphragm pump air valve is worn and replace it with new parts if necessary.
4. Check the condition of the sealing parts of the center of the diaphragm pump. If the wear is severe, the sealing effect will not be achieved, and the air will be discharged from the air outlet end. Please use only the GLYD ring due to its special construction.
5. Check if the piston activity in the diaphragm pump air valve is normal.
6. Check the type of diaphragm pump lubricant. If the added lubricant is higher than the recommended viscosity, the piston may get stuck or operate abnormally. It is recommended to use a light and anti-freezing lubricant. (ISO grade 15/5WT resistance Frozen oil)

The pneumatic diaphragm pump has action, but the flow is small or there is no liquid at all:

1. Check the cavitation of the pneumatic diaphragm pump to reduce the speed of the pump and let the liquid enter the liquid chamber.
2. Check if the valve ball is stuck. If the operating liquid is incompatible with the elastomer of the pump, the elastic body will expand. Please replace the elastomer with the appropriate material.
3. Check if the joint of the inlet of the pneumatic diaphragm pump is completely locked and not leaking, especially the clamp near the inlet end ball needs to be locked.

Air valve of pneumatic diaphragm pump freezes: Check if the moisture content of compressed air is too high to install air drying equipment
Air bubble is generated at the outlet of the pneumatic diaphragm pump: check the diaphragm of the diaphragm pump for cracks, check if the clamp is locked, especially the inlet tube clamp.
The product flows out from the air discharge port: check whether the diaphragm is broken, check whether the diaphragm and the inner and outer splints are clamped on the shaft.
The valve beeps: increase the exit or the inlet head.
Pneumatic diaphragm pump removal and reassembly guide:
WARNING: Before repairing the diaphragm pump, remove the air supply piping from the pump and drain the air pressure from the diaphragm pump. Remove all lines connecting the inlet and outlet of the pump, and then drain the fluid from the pump into the appropriate container. Wear protective caps, glasses, gloves.