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With the continuous development of the electronic industry, as many products in the electronic industry, dispensing machines are used for dispensing and packaging. Of course, there are so many industries in the market. Dispensing machines are not only used in the electronic industry, such as LED outdoor lighting, automotive electronics, communication electronics, solar energy and other industries. Among them, there are some tips in the use process.

在設備使用過程中，如果膠水用完，點膠閥內會有空氣。

During the use of the equipment, if the glue is used up, there will be air in the dispensing valve.

1.檢查軟管是否已超過有用使用時間。

1. Check whether the hose has exceeded the useful service time.

2.如果有這樣的情況，將點膠閥或點膠泵清理干凈，同時按照相關操作步驟進行操作。

2. If there is such a situation, clean the dispensing valve or dispensing pump, and operate according to relevant operation steps.

3.關閉分配器，同時打開閥門，取下冷卻套。

3. Close the distributor, open the valve and remove the cooling jacket.

4.然后取下氣壓頭。

4. Then remove the pneumatic head.

5.下一步是取下軟管時，要檢查點膠閥上是否還有彎頭管件，前提是彎頭管件可用。

5. The next step is to check whether there are elbow fittings on the dispensing valve when removing the hose, provided that the elbow fittings are available.

6.取下膠管，將點膠閥鎖在適配器底部時，會有少許空腔。如果有這樣的情況，可以用舊軟管中的膠體填充空腔，并檢查是否有氣泡。如果出現氣泡，用新的軟管將氣泡填滿，然后堅持是否了氣泡。如果仍然有氣泡，考慮更換新的軟管。

6. Remove the hose and lock the dispensing valve at the bottom of the adapter, there will be a little cavity. If this is the case, fill the cavity with the colloid in the old hose and check for bubbles. If bubbles appear, fill them with a new hose, and then insist whether the bubbles are eliminated. If there are still bubbles, consider replacing the hose with a new one.

7.在這里我們不得不說，更換膠管取決于凝膠的流動性是否合適。不能從頭到尾出現氣泡，因為氣泡會造成滴漏、膠點重量變化等問題。因此，在更換膠管或填充過程中經常會出現氣泡。

7. here we have to say that replacing the hose depends on whether the mobility of the gel is suitable. Bubbles shall not appear from beginning to end, because bubbles will cause problems such as dripping and leakage, change of glue dot weight, etc. Therefore, bubbles often appear in the process of replacing the hose or filling.

8.因此，更換膠管時，切記不要讓空氣進入膠體通道。如發現空氣殘留，且不確定空氣是否通過膠管進入點膠泵，請按以下步驟更換膠管:

8. Therefore, when replacing the hose, remember not to let air enter the colloid channel. If air remains and it is uncertain whether the air enters the dispensing pump through the hose, replace the hose as follows:

1)檢查點膠閥上連接軟管的適配器。主要檢查是否有膠體溢出，如有，擦去。

1) Check the adapter connecting the hose on the dispensing valve. Mainly check whether there is colloid overflow. If so, wipe it off.

2)重新安裝氣動頭。

2) Reinstall the pneumatic head.

3)再將軟管冷卻套重新安裝。

3) Reinstall the hose cooling sleeve.

4)關閉飲水機門。

4) Close the water dispenser door.

5)重新啟動分配器。

5) Restart the distributor.

需要注意的是要有足夠的排膠時間，使新膠管中的膠水順利流出點膠頭，并確認點膠閥的壓力和速度都是按照理想狀態設定的。然后測量膠體流速，直到連續兩次測量的誤差在正負2%的范圍內。

It should be noted that there should be enough glue discharge time to make the glue in the new hose flow out of the dispensing head smoothly, and confirm that the pressure and speed of the dispensing valve are set according to the ideal state. Then measure the colloid flow rate until the error of two consecutive measurements is within the range of plus or minus 2%.