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Dench-top type Freeze Dryer FAQ
1, a serious failure of the circulating pump of the bench-top type Freeze Dryer
Answer: The more common failure of the circulating pump of the desktop freeze dryer is the water in the module, which will burn the module, and the motor may be burned out more seriously. To prevent condensate from entering the module, it may cause a short circuit. Generally, the module is coated with 704 sealant to protect it from water. In addition, the entire circulating pump is insulated to protect it, and the condensate will be less.
The technician suggested that the two circulating pumps run in turn. It is better not to run one pump all the time. One batch of medicines can be used to run one, and the other batch of medicines can be run to another. In this way, the possibility of circulating pumps is much less .
2, leaking vacuum
Answer: There are many reasons for the vacuum leak of the desktop freeze dryer. I have already mentioned a lot of them. This time the customer's problem is mainly due to the vacuum leak of the flange flange bolts. Due to thermal expansion and contraction during refrigeration and steam sterilization, the bolts are loosened, and the seals are not tight, resulting in a vacuum leak.
The technician advises the user to check frequently during the normal use, check a lot, and find the problem early, so that some problems can be avoided.
3.Pipeline freeze dryer has multiple pipeline leaks, poor welding quality and easy to leak.
Answer: The leakage problem of the refrigeration system of desktop freeze dryers has been mentioned by several users, and there are many factors for leakage. The most important thing is to reduce the vibration to the greatest extent under the existing conditions, and add some vibration reduction brackets, which can better avoid the recurrence of this phenomenon.
4, small vacuum equipment
Answer: The problem of the vacuum equipment of the desktop freeze dryer is based on the design requirements and the reference product price, and according to the requirements of the contract, the design configuration is given under the conditions that basically meet the use.
5.The adjustment of the hydraulic system of the desktop freeze dryer is not accurate.
Answer: The adjustment of the rise and fall of the hydraulic system is mainly controlled by adjusting the relief valve. The counterclockwise rotation speed of the relief valve slows down and the counterclockwise rotation speed increases.
6. The refrigeration system of the desktop freeze dryer has high pressure and leaks in the pipeline.
Answer: The high pressure of the refrigeration system is likely due to a leak in the low-pressure pipeline, which sucks air into the pipeline, resulting in a high pressure of the refrigeration system. Leakage of low-pressure pipelines is mainly due to the easy loosening of the connecting nuts at both ends of the expansion valve, as well as some welded parts and weaker parts of the copper pipe. These parts cause leakage due to vibration, vibration or other factors after the machine has been used for a long time.
The technician advises the customer to pay attention to these parts during daily use, check frequently, find early and solve early, without affecting production.
7, the circulation pump module is broken
Answer: The circulation pump module of the desktop freeze dryer is broken. The most common is the module water. Now use 704 sealant and heat preservation treatment. It is recommended to use circulating pump in turn. If it is the quality of the module itself, it has to be replaced by the manufacturer.
