For vacuum pump oil, it must be kept clear and bright with no turbidity or foaming during each use. There will be no milky material when the oil is still settling. If there is foreign matter, it indicates that new oil needs to be replaced. Check the oil level and the color of the oil once a week. If the oil level is below the minimum mark, refuel it. If the oil level exceeds the maximum mark, drain some of the oil, or dilute the vacuum pump oil due to excessive condensate. Replace the vacuum pump oil, if necessary, please change the gas valve; need to be replaced once a year exhaust filter, compressed air cleaning; every six months need to clean the dirt or dust in the vacuum pump, the fan wheel, cooling fin, ventilation grille And the fan hood to clean, it is recommended to use compressed air cleaning; for vacuum pump oil should be promptly replaced, the exhaust filter and intake filter check once a month. The current vacuum packaging machine market is diversified, mainly in the new technology, production lines, multi-functional and automated direction. In the packaging method, a large number of vacuum packaging machines choose inflatable packaging to replace the previous vacuum packaging, inflatable packaging machine, packaging materials and inflatable body composition of these three aspects together, and in control technology, more use of microelectronic technology and computer technology. Vacuum packaging machine production efficiency has been developed from a few pieces per minute to dozens of thermoforming - filling - sealing machine production up to 500 / min. In a single machine to achieve multi-functional can easily expand the scope of use. To achieve stand-alone multi-function modular design must be adopted, through the transformation and combination of functional modules to become suitable for different packaging materials, packaging materials, packaging requirements of different types of vacuum packaging machine. When more and more functions are needed, concentrating all the functions on a single machine can make the structure very complicated and inconvenient for operation and maintenance. At this time can be different functions, the efficiency of matching several machines into more complete function of the production line. Such as France's fresh fish vacuum packaging production line. Therefore, we must work harder to improve quality in all aspects. We need constant attention to the development trend of vacuum packaging machines. However, the maintenance knowledge of equipment, we also need to pay attention to the latest methods and put them Use our after-sales service.