1. Long-term vacuum packaging, insufficient or poor oil quality of vacuum pump, resulting in poor vacuum pumping. The solution is to change the vacuum pump oil instead of working endlessly for a long time.
2. The phenomenon of pipeline leakage is very common. Even if no pipeline leaks, it is recommended to replace it after one year of use.
3. When there is a problem with the solenoid valve, don't solve it yourself. Get a technician to help you deal with it.
4. The microswitch is not in place. There is a microswitch between the cover and the lower chamber. Just check and adjust the position.
5. The bleeder valve cannot be closed, resulting in air leakage. Check whether the bleeder valve is worn or not and whether there are sundries stuck.
6. The controller is broken, but it is a bit expensive. If it is within the warranty period, it is recommended that the manufacturer repair it.
7. If there is something wrong with the vacuum pump, have a technician check it. Generally speaking, this is more difficult and can't be solved by yourself.
8. Whether the airbag leaks, once it leaks, it must be replaced with a new one.
9. The distance between the heating row and the two planes of the silicone rubber strip in the vacuum chamber (the gap between the upper and lower heating rows is too small) causes the bag mouth to be partially clamped or squeezed when vacuumizing, thus degassing the air in the bag.
10, vacuum packaging machine in operation should pay attention to clean up the dirty foreign body, don't let the dirty foreign body affect the normal use of vacuum machine.
Second, how to solve the problem that the vacuum sealing machine only vacuumizes and does not seal?
1, check the bag
(1) Material problem
There are several kinds of bags, such as smooth bag, aluminum foil bag, corner bag and grain bag. Among them, the grain bag with line 18 can be sealed normally by vacuum, but the aluminum foil bag and corner bag cannot be sealed when it exceeds line 18.
(2) Resettlement problem
After eliminating the bag problem, we need to check whether the bag is properly placed in the vacuum tank. If not, we will try to relocate it to the correct position and pay attention to it, and be careful not to press the machine into the vacuum bag when placing it.
(3) Damage problem
The next step is to check whether our bags are leaking. For example, if we seal some sharp and prickly food, the bag may be punctured, so that the machine will keep vacuuming and unsealing, and then we need to change a bag.
2. Check the sponge
After the bag problem is eliminated, we can check whether it is a sponge strip problem. When the machine is not sealed for a long time after vacuumizing, we can press the machine panel hard and pay attention to whether the vacuumizing state of the vacuum bag has changed. For example, if we feel that the vacuumizing intensity has increased, we can seal it.
If the above operation can't seal normally, we can take off the sponge strip and reinstall it, or directly replace it with a new sponge strip.
Precautions:
1. When the machine is not used at ordinary times, try not to close the cover frequently, so as not to squeeze the sponge strip for a long time and cause deformation!
2. Don't worry about using silicone tape. Compared with sponge strips, silicone rubber strips are more durable and not easy to deform.