Fully automatic vacuum forming machine is widely used in the plastic industry. As a thermoplastic forming equipment with low investment and wide application, its workflow is simple, easy to operate and maintain. As a mechanical equipment, some minor faults will inevitably occur during processing and operation. The vacuum system is the core of a blister machine, so how to solve it when the vacuum degree of the vacuum pump is not up?     Below I will summarize the following important situations based on our customers' experience in operating machinery and equipment for many years:   1. The temperature of the pumped gas is too high Solution: reduce the temperature of the pumped gas, or add a corresponding heat exchanger.   2. The oil passage in the pump is blocked or blocked, and a certain amount of oil cannot be maintained in the pump chamber. Solution: Check whether the oil circuit can be unblocked, and add the same type of vacuum pump oil.   3. The problem of different vacuum pump oil brands, because the saturated vapor pressure in different brands of oil is different, the vacuum effect is also different. Solution: Accurately replace the new vacuum pump oil according to the product model specification.   4. Due to the low degree of vacuum formed by the vacuum pump oil, that is, the emulsification and discoloration of the vacuum pump oil may be too dirty. Solution: Put all the vacuum pump oil in the clean pump into the clean pump, replace the same type of vacuum pump oil, and deal with the water vapor and impurities in the pumped gas to prevent them from entering the pump.   5. the gap between cooperation increases. This is after the wear between the rotary vane and the stator increases the gap containing dust in the temporary pumping gas. Solution: Check whether the gap is too large and replace with new parts.   In addition, the air path of the plastic suction machine is blocked, the solenoid valve is open, the vacuum pump motor belt of the pet vacuum forming machine is not tight, and it is out of place, and the vacuum gauge of the Plastic Food Container Making Machine is useless. The above is the treatment method for the lack of vacuum when the Plastic Tray Machine is working. There will definitely be small problems when the plastic tray vacuum forming machine works for a long time, and it is not a quality problem itself. The occurrence of each problem is evidence-based, and the important thing is to investigate it in time. In fact, it is not difficult to deal with it.