Daily maintenance method of large vacuum freeze dryer
The large-scale vacuum freeze dryer is mainly composed of two parts: the refrigeration system and the vacuum system. The product is placed in a low-temperature vacuum environment, and the water is frozen into ice. The vacuum pump is pulled out, thereby drying the processed object. Refrigeration and vacuum systems cannot be processed as long as there is a problem. Therefore, the daily maintenance of the freeze dryer is a very important task. Once the unit fails, it should be eliminated quickly to ensure normal production. The daily maintenance method of this equipment is as follows:
一 、 Maintenance of vacuum system
The vacuum system is mainly composed of vacuum pump, front box, back box, valve on the box, mushroom valve, small butterfly valve, vacuum silicon tube and other parts.
1) Regularly change the vacuum pump oil to ensure the performance of the vacuum pump
2) Before starting the vacuum pump, check whether the oil level is normal (it should be about 1/2 of the sight glass).
3) Before the box is evacuated, the back box must be dry to prevent water vapor from being pumped into the pump body, which will affect the vacuum pumping efficiency.
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