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As a freeze-drying equipment, the four-ring freeze-drying experimental freeze-drying machine integrates the refrigeration system, the vacuum system, the heat-conducting oil heating system, and the moisture-removing syste.
The powder has good dispersibility after dryin.
The operation of the freeze dryer is simpl.
Generally, after starting the machine, the material can be put into the material box for freezin.
In the freezing process of materials, on the one hand, the vacuum system performs vacuuming to take away part of the water; on the other hand, when the material is frozen, the water contained in some molecules is discharged to the surface of the material for freezin.
The heating system heats and dries the material, and the water contained in the material is brought to the freezer and capture box to freeze by vacuuming, so as to meet the requirements of freeze-drying of the materia.
Common faults and troubleshooting methods of Sihuan freeze-drying experimental freeze-drying machine? Symptom 1: The freeze dryer does not operateThe compressor circuit is disconnectedThe fuse is blownThe thermal relay operatesThe high-voltage switch operatesThe compressor is blockedThe line is connected or loos.
Stop within a short time after startingThe ambient temperature is too highThe condenser is blockedThe compressor is overloadedThe refrigerant is missingThe low pressure is too lowThe intake air volume is too largeThe compressor is stuc.
Fault phenomenon 3: The compressor does not startIncorrect wiringThe voltage is too lowThe starting capacitor is damaged The relay or contactor is not closed The starting winding is open Phase failure phenomenon 4: The compressor starts and stops repeatedly due to overload protection Low voltage or three-phase imbalance Other electrical equipment is connected to the overload protector The overload protector fails The running capacitor is too small The exhaust pressure is too high Short circuit between windings Thermal relay contacts Symptom 5: The capacitor is burnt out The specifications do not match The voltage is too hig.
Symptom 6: Excessive exhaust pressure Excessive amount of refrigerant There is air in the refrigeration system The condenser is dirty Ambient temperature Too high The fan pressure switch is fault.
The fan motor is fault.
The fan rotation direction is incorrec.
The cooling water flow control valve is fault.
Fault phenomenon 8: The relay is burned out The voltage is too high or too low The running capacitor is incorrect Repeated start and stop The relay specifications do not match The mounting seat is incorrect
The powder has good dispersibility after dryin.
The operation of the freeze dryer is simpl.
Generally, after starting the machine, the material can be put into the material box for freezin.
In the freezing process of materials, on the one hand, the vacuum system performs vacuuming to take away part of the water; on the other hand, when the material is frozen, the water contained in some molecules is discharged to the surface of the material for freezin.
The heating system heats and dries the material, and the water contained in the material is brought to the freezer and capture box to freeze by vacuuming, so as to meet the requirements of freeze-drying of the materia.
Common faults and troubleshooting methods of Sihuan freeze-drying experimental freeze-drying machine? Symptom 1: The freeze dryer does not operateThe compressor circuit is disconnectedThe fuse is blownThe thermal relay operatesThe high-voltage switch operatesThe compressor is blockedThe line is connected or loos.
Stop within a short time after startingThe ambient temperature is too highThe condenser is blockedThe compressor is overloadedThe refrigerant is missingThe low pressure is too lowThe intake air volume is too largeThe compressor is stuc.
Fault phenomenon 3: The compressor does not startIncorrect wiringThe voltage is too lowThe starting capacitor is damaged The relay or contactor is not closed The starting winding is open Phase failure phenomenon 4: The compressor starts and stops repeatedly due to overload protection Low voltage or three-phase imbalance Other electrical equipment is connected to the overload protector The overload protector fails The running capacitor is too small The exhaust pressure is too high Short circuit between windings Thermal relay contacts Symptom 5: The capacitor is burnt out The specifications do not match The voltage is too hig.
Symptom 6: Excessive exhaust pressure Excessive amount of refrigerant There is air in the refrigeration system The condenser is dirty Ambient temperature Too high The fan pressure switch is fault.
The fan motor is fault.
The fan rotation direction is incorrec.
The cooling water flow control valve is fault.
Fault phenomenon 8: The relay is burned out The voltage is too high or too low The running capacitor is incorrect Repeated start and stop The relay specifications do not match The mounting seat is incorrect
