Vacuum freeze dryer is suitable for the drying of medium and high-level raw materials such as Chinese medicinal materials, Chinese medicinal materials, biology, wild vegetables, dehydrated vegetables, food, fruits, chemicals, and pharmaceutical intermediates. The equipment can be combined with refrigeration system, vacuum system, heat transfer oil heating system and dehumidification system. A new type of box structure is introduced, which makes full use of the storage space in the box and realizes freezing and vacuum drying.
In recent years, with the continuous development of my country’s pharmaceutical industry, freeze dryer manufacturers have also continuously strengthened technological innovation, promoted greater breakthroughs in equipment, and better used in the pharmaceutical drying industry. As we all know, in the working process of the dryer, if there is a failure, it is easy to affect the working process. However, users will inevitably encounter some glitches during use. They need to understand the cause of the fault and the corresponding solution in order to make judgments and troubleshoot in time.
What are the common failures of vacuum freeze dryers? What is the solution?
Common failure one: power supply voltage is unstable
It is understood that the normal working power supply voltage of the vacuum freeze dryer is 215-225V. If the voltage deviates from the allowable range, the compressor will not work effectively or even run at all. For the problem of unstable power supply voltage, the solution is to replace a qualified power supply when the power supply voltage is unqualified; when the power supply voltage is unstable, you can use an AVR (220V) or a voltage regulator on the original working power supply.
Common fault 2: The indoor temperature is higher than 30℃
The freeze dryer needs to operate in a suitable environment. When the indoor temperature is higher than 30℃, the condenser may not be able to condense, so the system will malfunction. The maintenance method at this time is that if the indoor temperature is around 28°C, the user can open the back door of the condenser or open the room door to optimize the ventilation and cooling conditions.
Common failure 3: The indoor temperature is lower than 0℃
The indoor temperature is too high or too low. If the indoor temperature is lower than 9°C, the compressor oil will become viscous, which will easily affect the normal operation of the compressor. In addition, when the temperature is too low, all electronic components may be affected and misoperation may occur. In view of this situation, the maintenance method recommended by technicians is to use other heating equipment to increase the ambient temperature when the ambient temperature is below 0°C, and keep the temperature above 5°C and below 30°C.
Common failure 4: Excessive dust on the vacuum freeze dryer or in the environment
It is understood that if the condenser and compressor are covered with too much dust, it is easy to make the condenser unable to achieve the condensation effect, which directly affects the use effect of the compressor. Therefore, regular dust removal is essential. The industry suggests that if there is too much dust in the environment, users can regularly remove the dust covering the compressor and condenser every month. To ensure that the equipment is not damaged, a soft brush can be used to remove dust from the compressor, condenser and pipeline.