Solutions to Common Problems of Dispenser in Daily Use 

1. The velocity of flow is too slow. If the flow rate is too slow, the pipeline should be changed from 1/4 to 3/8, and the shorter the pipeline is, the better. In addition to changing the pipe, the rubber outlet and air pressure should be changed to accelerate the flow rate.

2. Bubbles in the fluid. Excessive fluid pressure and too short valve opening time may infiltrate air into the liquid. The solution is to reduce fluid pressure and use a tapered oblique needle.

3. Instantaneous glue blockage in rubber valves, joints and pipelines. This situation is mainly due to excessive humidity or reused instantaneous glue. Fresh instantaneous glue should be used to thoroughly clean the pipeline with non-humid Aceton acetone. The air used should be determined to be dry and filters should be installed between the air pressure in the plant and the rubber valve system.

4. Leakage of rubber valve. This often happens after the rubber valve is closed. 95% of this happens because the needle caliber is too small. Too small needles can affect the flow of liquid and cause back pressure, which results in drip leakage shortly after the rubber valve is closed. Too small needles can also affect the action of exhausting bubbles when rubber valves start to use. This problem can be solved by replacing larger needles. The air in the liquid will drip after the rubber valve closes. It is better to exclude the air in the liquid beforehand, or change to a rubber which is not easy to contain bubbles, or to defoam the rubber centrifugally before using it.

5. The size of dispensing machine is different. When the gum is discharged inconsistently, it is mainly caused by unstable pressure cylinder or air pressure for storing fluid. The intake pressure regulator shall be set at 10 to 15 psi lower than the lowest pressure in the factory. The pressure used in the pressure cylinder shall be above the middle of the pressure regulator, and the pressure between the middle and low pressure parts of the pressure gauge shall be avoided. The control pressure of the rubber valve should be at least 60 psi to ensure the stability of the rubber tapping. Finally, check out the gel time. If less than 15/1000 seconds will cause unstable gel production, the longer the gel production time, the more stable the gel production.

6. Problem of needle in dispensing machine

Generally speaking, air problems may occur with needles smaller than size 20 - drip or droop. The dispensing machine manufacturer suggests that the larger general metal needle or tapered oblique needle should be used as far as possible to avoid the use of winding or Teflon needle.