Freeze dryer FAQ

1, the freeze dryer operation program can not start A: The stability of the control software program is very important, but sometimes the process is written, click to start, but can not start normally, mainly the freeze dryer communication or communication response speed Slow, just start it again or a few times.
2, once burned a compressor A: The compressor motor of the freeze dryer burned out, the main reasons are: a, metal short circuit caused by the short circuit b, the quality of the freeze dryer motor itself is not good, if its insulation performance is not good, It can also cause the motor to burn out. c. During the warranty period of the freeze dryer, we are responsible for the free replacement of the compressor according to the specific situation. Of course, the user should also pay attention to check whether the working condition of the compressor of the freeze dryer is abnormal. If abnormal conditions are found, it should be dealt with in time.
3, Pt100 platinum resistance is easy to cause temperature measurement is not accurate A: temperature measurement is not accurate There are several factors: Pt100 platinum resistance itself is not good quality; freeze dryer transmitter signal output is not allowed; AD module signal output is not allowed; wiring is not Firm; to determine which reason, you can take the exclusion method. The resistance of the Pt100 platinum resistor at 0 ° C is 100 ohms. To determine if the Pt100 is causing the temperature measurement is not accurate, just measure the resistance of the Pt100.
4. Freeze drying machine plate layer leakage heat transfer oil A: The downstream flow freeze dryer adopts mass production mode. The box body and the plate layer are all produced by professional outsourcing manufacturers. The production of the plate layer has a strict set of processing technology. Our company There are also special quality inspection technicians to guide and supervise to ensure the quality of production. However, the production of the freeze dryer layer is complicated, the welding requirements are very high, and the occurrence of the layer leakage is mainly caused by the poor welding quality. We have now taken more scientific measures to develop a more advanced processing technology and quality inspection system to ensure the quality of the freeze dryer layer and ensure the quality of the freeze dryer.
5, the remote control of the freeze dryer often crashes A: The freeze dryer remote control crash, mainly the quality of the computer.
6. Compressor overheat protection Answer: The reason for the thermal protection of the freeze dryer motor is described above and will not be discussed in detail. Under normal conditions, electronic thermal protection can be solved. If it is caused by the quality problem of the motor, it will be solved by the supplier of the freeze dryer compressor. We will also require suppliers to strengthen quality management to ensure product quality to ensure the overall performance of the freeze dryer.
7, heat transfer oil outlet temperature probe bad answer: freeze dryer temperature probe is generally the product of the three temperature probe is easy to break, mainly pressure plug, easy to pull off or crush when pulled, heat transfer oil outlet temperature probe is rare Bad, because it is generally not moved. If it is bad, it is an accidental factor, and the quality of the probe itself is not good. We have notified the temperature probe supplier to urge the other party to strengthen the quality inspection work and improve the quality of the temperature probe.
8. The seperate valve of the freeze dryer is not tight, and the laminar lift is issued. Answer: The seperate valve of the freeze dryer adopts the mushroom valve structure. The main reasons for the lack of tightness are: insufficient pressure, and the stroke is not adjusted according to the above two points. Appropriately increase the working pressure of the small cylinder, the septum valve must be closed. The main reason is that the hydraulic system relief valve of the freeze dryer is not adjusted properly, and the flow rate of the hydraulic oil is not suitable. The size of the relief valve is appropriately adjusted to make the rise and fall of the plate layer in an optimal state.
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