MODEL: HFD-4. We continue to be committed to provide you tools with ... HFD-4 vacuum freeze dryer is a type of freeze dryer used in households. Freeze ...
Technical Support and E-Warranty Certificate www.vevor.com/support FREEZE DRYER MODEL: HFD-4 We continue to be committed to provide you tools with competitive price. "Save Half", "Half Price" or any other similar expressions used by us only represents an estimate of savings you might benefit from buying certain tools with us compared to the major top brands and does not necessarily mean to cover all categories of tools offered by us. You are kindly reminded to verify carefully when you are placing an order with us if you are actually Saving Half in comparison with the top major brands. MODEL: HFD-4 FREEZE DRYER NEED HELP? CONTACT US! Have product questions? Need technical support? Please feel free to contact us: Technical Support and E-Warranty Certificate www.vevor.com/support This is the original instruction, please read all manual instructions carefully before operating. VEVOR reserves a clear interpretation of our user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won't inform you again if there are any technology or software updates on our product. -1- General 1.Introduction Vacuum freeze drying is the removal of water or other solvents from the frozen samples. During the whole drying process, the sample is in liquid state and the temperature is generally lower than -10. The purpose of vacuum freeze drying is to restore the original characteristics of the sample after rehydration. Due to the drying process being carried out at low temperatures, it can be used for materials that are prone to denaturation at high temperatures and can ensure that the properties of other compounds do not change. Most foods, such as fruits, vegetables, meat, pet food, milk, candies, are converted into dried samples through vacuum freeze-drying. Vacuum freeze-drying is the mildest process for preserving the biochemical properties of sensitive tissues or other tissues. HFD-4 vacuum freeze dryer is a type of freeze dryer used in households. Freeze dried fruits, vegetables, candies, meats, liquid samples. Multiple ingredients can be processed on the same freeze dryer: Temperature control of pre frozen shelf surface Freeze dried samples can be processed at user-defined temperatures Drying at freezing limit temperature - user-defined samples, high vacuum drying, can remove capillary bound water molecules. -2- 3.Specification for HFD Series freeze dryer product Power name (w) HFD-4 Vacuum Freeze Dryer 1550 Host size (L*W*H) mm 500*640*9 00 Product Description Cold trap temperature: -35; Drying temperature: -25~+60 No load: <5Pa Water catch capacity: 4KG Separator: Four layers with heated separator Partition size: 210mm*430mm; Partition spacing: 45mm; Material tray size: 200mm*425mm, 4 pieces; -3- 4.Safety Attention: Remove the power plug The power should be shut down, and the power plug should be removed when maintenance or open the frame cover. Attention: Chemical solvent The samples with high acid or solvent content can not be dried in the absence of special protection (if necessary, please contact the service department), otherwise the freeze dryer may be corroded. When drying containing azide should pay more attention to it, because with copper or other non ferrous metal reaction will explode. Attention: Chemical solvent The samples with high acid or solvent content can not be dried in the absence of special protection (if necessary, please contact the service department), otherwise the freeze dryer may be corroded. When drying containing azide should pay more attention to it, because with copper or other non ferrous metal reaction will explode. Warning: Do not touch the condenser chamber's internal surface In the process of freezing, the temperature of condenser chamber is very low. When putting sample inside, the fingers do not touch chamber. Otherwise the fingers may freeze to the surface. Note: delivery or handling requirements Don't hold the control panel when delivery and put down the machine. Be careful with your hand to avoid crushing. 5.Below operations are prohibited 1The freeze dryer is not properly installed 2It's not allowed or authorized 3The tray is not fixed -4- 4It is not possible to freeze dry corrosive substances without special safety measures. Even in the case of protection, it is necessary to ensure that no corrosion to reduce the mechanical strength of the trap, door panels, and other accessories. 5Not allowed to add attachments. Do not use container with poor quality. Because it is very dangerous with burst risk. 6Do not use freeze dryers in areas where there is a risk of explosion. 7Do not move or compact the freeze dryer, do not lean on or rest on it when working. 8Do not place potentially dangerous objects, such as liquid bottles, in the vicinity of a freeze dryer. 9Do not dry the samples which will react when freeze dry. 10Do not freeze dry explosive or flammable samples. Technical characteristics 1.Main features 1The machine adopts Tecumseh or Secop, rapid cooling 2LCD control system, easy to operation, and powerful function 3The dry room door is made of colorless transparent organic glass, and the whole process of freeze drying can be observed. 4The vacuum pump is connected by international standard KF quick connector. 5Stable performance, easy operation and low noise. 2.Technical performance 1Condenser chamber temperature-35 (without load 2Vacuumunder 5Pawithout load Working condition 1.working ambient temperature1030 relative humidity 70% -5- supply voltagesingle phase220V-230v or120v Horizontally, no conductive dust, explosive, corrosive gas and electromagnetic interference. 2.Delivery and storage condition: ambient temperature :-3550 relative humidity 93% Storage environment should be well ventilated, non corrosive gas. 3.Security class I type B Normal information for vacuum freeze drying 1.Basic knowledge Vacuum freeze-drying is one of the most gentle ways to dry. It is based on the sublimation principle, that is, the solid phase directly into the gas phase of this physical phenomenon. The freeze-dried material is placed in a vacuum drying chamber for drying, and the water vapor produced by the cold trap is condensed to form ice, so as to achieve the purpose of eliminating water vapor. Vacuum pump is used to discharge the air in the drying room, not including water vapor. The baffle plate is provided with a heating device, and the heat is transferred to the material through the conduction function to provide the energy needed for sublimation. When the free water in the material is sublimated, the internal bound water can also be removed from the material at a very low vacuum. This drying process is considered to be the last stage of drying, analytical drying. Sublimation The principle of sublimation can be explained briefly with water map. When the pressure is higher than 611Pa, the water will go through three phases of solid, liquid and gas. When the air pressure is equal to 611Pa, the dissolution curve, the vapor pressure curve and the sublimation curve three lines are at one point, that is, the three phase point. When the pressure is lower than 611Pa and reached the sublimation curve, the ice can be directly into a solid state gas. Note: The three-phase point of water is 0.01 degrees C and 611 Pa. -6- Ice vapor pressure conversion meterSublimation curve -7- 2.vacuum freeze-drying process Freezing: Under normal atmospheric pressure, reduce temperature to freezing to ice structure Drying: Under certain vacuum, such as 1pa, and keep the water in solid phase. Energy input: heating, keeping some matter in solid phase. The matter's temperature is controlled by certain vacuum. 3.Pre freezing The sample could be pre freezing in freezing dryer. It's thickness should no more than 1~2cm. Otherwise it should extend Freeze drying time. 4.Main drying Open the vacuum pump, create a vacuum environment, causing sublimation. Warning The substance of the acid or any other substance containing corrosive volatile solvents should not be dried with this machine. Pay special attention to azides cannot be used, because it combines with copper or other nonferrous metals will explode. As soon as the water begins to sublimate, it absorbs heat and causes the temperature to drop. The pressure in the drying chamber increases with the sublimation and must be reduced by the condenser. The duration of the main drying process is mainly determined by: 1Sample's thickness 2Energy to sample when drying process 3The chamber's pressure when drying process Increasing chamber's pressure, could increase the rate of sublimation and shorten the drying period. -8- The residual moisture in the dry matter is mainly determined by 1The matter's temperature at final drying stage 2The vacuum at final drying stage 3When the matter's temperature is almost equal the tray's, the main drying stage is finished. When the adsorbed water of the substance is also beginning to be discharged, the final stage of drying begins. This figure shows the material drying process with about 10% solid phase material. After the main drying stage of the first 1/4 time, 50% of the water is condensation. In the next 1/4 time, 50% of the remaining water is also condensed. In the process of freeze drying, the area where the material is sublimated gradually shrinks from the surface to the interior, so that the water vapor generated by sublimation needs to pass through the dry material layer to reach the outside of the material. Therefore, in the drying process, the sublimation resistance increases. The drying curve is mainly determined by the latent heat of sublimation and the velocity of water vapor transmission. In order to increase the thermal conductivity of the dry matter and to minimize the volume of water vapor, the drying conditions should be as close as possible to the freezing point. Drying time depends largely on the degree of vacuum drying. Along the vapor pressure curve on the ice, the closer the vacuum degree is to the freezing point, the shorter the drying time. -9- Interesting association 1.0g ice equal to 1m³ water vapor under 100Pa pressure 10m³ water vapor under 10Pa pressure 100m³ water vapor under 1Pa pressure Energy supply when drying process The energy needed by the dry material is mainly provided by the heating plate at the bottom of the tray. The heat transfer process is shown in the following figure. Heat transfer is achieved by direct contact between the bottom of the vessel and the material, as well as convection heat transfer between the vessel and the material. At the beginning of sublimation, the heat transfer between the vessel wall and the frozen material is very effective. However, shortly after the formation of a layer of ice free, porous, dry area. The corresponding temperature step is formed between the vessel wall and the material. Have dry region of the thermal conductivity decrease led to the increase of the ice nucleation temperature, if the ice nucleation temperature rises to above freezing point temperature, the material began to thaw. This is especially true for heterogeneous materials and for the formation of multilayer structures. Therefore, it is necessary to precisely control the heat supply, temperature and pressure during the drying stage. - 10 - 5.Drying endpoint and ventilation The crude mark of the drying endpoint is the change of vacuum degree and cold trap temperature. After a period of drying, the temperature of the cold trap is no longer decreased, and the vacuum degree is stable to a high degree. At this time, the vacuum pump can be closed, and the drying chamber can be ventilated through the vent valve. Finally close the dryer and take out the sample. 6.Defrosting The ice can be removed by room temperature or blower. 1.Components Installation and operation Fig.1-1 Main dryer 1.Power Supply Switch 4. Transparent door 2. USB 5.. Vacuum interface 3. Display Screen 6. Water discharge and inflation valve - 11 - Fig.1-2 Vacuum pump 1 oil outlet 4.Gas ballast valve 7.terminal 2.oil level 5.air outlet 8.capacitor 3.oil inlet 6.air inlet 9.power plug Fig. 1-3 connector 1. nut 2. 2.bracket 3. 3.seal ring - 12 - 2.Attention when installation and testing Warning Paper, cloth, or similar materials do not near the gas circulation pathway or heat exchange may be blocked. Freeze dryer should be placed horizontally, ambition temperature is about+10~32. The clearance between dryer and wall should be more than 40cm, to keep enough air flow. Never near the heater or other heat source. Never be in sunlight derectly. The lack of air circulation or the high ambient temperature can lead to the pressure or temperature of the refrigeration system higher, or even more than the allowable operating pressure. It will be lead to failure. 1.Power source The local power supply must be the same with the shown in nameplate. 2.Fuse The fuse should be 16A. 3.condensation and defrost The condensed water is discharged through the discharge valve below the freeze dryer. 4.Vacuum exhaust device We recommend to use exhaust filter (oil mist filter). This filter can prevent the air pollution caused by the oil mist from the vacuum pump. The amount of oil mist from the vacuum pump depends on the pressure of the working. The filter is installed on the exhaust flange of the vacuum pump, which is equipped with a safety valve to indicate the saturated state of the filter. 5.Start to running Note: the correct installation of the freeze dryer must be check before starting. Check and confirm that the vacuum pump oil has been added before starting. - 13 - Fig. 1-4 Connecting 3.Installation step 1.Open the package, check the components according to the packing list; 2.Fill the pump's oil into pump to the middle of the level guide. Remark: Please using required oil type; 3.Connect the pipe between pump and dryer by connectors. One side is fixed on pump's air inlet, the other side is fixed on dryer's vacuum outlet; 4.Connect the pump's power plug into dryer's vacuum pump power outlet; 5.Connect the power wire to dryer's main power outlet, other side connect to power supply(with ground wire ); 6.Turn on the switch, test step by step according to the instructions. When all the technical data are satisfy (including vacuum <15Pa, condenser chamber's temperature <-35), the dryer could be put into usage. 4.General operation process of freeze drying 1.Connecting the freeze dryer correctly according to section 5.3; 2.Adding sample into disc (liquid sample is poured directly, solid sample or bottled sample is distributed ); 3.Putting disc on the tray, to ensure they are completely coincided. Closing the door and locking the handle; 4.Turning on the switch and getting in main interface; - 14 - 5.In control interface, touching main interface button and getting in; 6.In main interface, touching user parameters button and getting in; 7.In user parameters interface, could setting drying process, including stage number, temperature and time for each stage; 8.Touching back to control interface. Touching button to start temperature control and freeze system to ensure the sample's temperature is changed following setting values. In drying process, stage one is pre freezing stage. The sample will be frozen to below Eutectic point, and make sure the sample has been frozen totally; 9.When pre freezing stage finished, the process getting into drying stages(stage two and later stages). Open vacuum pump, making vacuum condition in chamber, to dry the sample. Make sure all the vent valves had been closed; 10.When all stages finished, it means the drying process is over.* Open the vent valve at first, then close vacuum pump, close temperature control and freeze system. Finally, turn off the power and take off the power plug. While the pressure balance between chamber inside and outside, open the door, take out sample. 11.Defrosting the ice by heater. After all the ice removed, clean the dryer.** *Note: Due to the specific characteristics of the material, and the thickness of the material is different, the user should be tested to determine the appropriate freeze drying process to ensure that the material is completely dry. **The outlet of the vacuum pump should be cover to avoid dust entering. Control system operation The dryer's control system is operated through touch screen. Please read the instructions carefully so as to use them correctly and keep them properly for reference. 1.Operation attentions 1.In case of fire, explosion or machine damage, it is forbidden to use - 15 - flammable, explosive gas and steam places. 2.In order to prevent electric shock or instrument failure, the power can be connected to power supply only after all the wiring completion finished. It is not allowed to touch the interior and change the instrument. 3.Except user parameters, other parameters have been set up before the factory, do not arbitrarily change. 4.Before cleaning. Clean power meter display with a soft cloth or cotton paper please. The display is easy to scratch, prohibit the use of hard objects wipe or touch the screen. 2. Control system interface and parameter setting of NovaDryer-HF600 Home page & Name Operation Home Page This interface is used to switch between Chinese and English - 16 - Recipe management In the interface, you can set the process you need, but most of them do not require you to set up. We will prepare most of the parameters for you to adapt to the equipment. The only you need to operate is the temperature control curve(The temperature and maintenance time that need to be controlled during the drying process). More detailed setting methods, please read sop - 17 - Temperature curve Operation screen On this interface, the process curve of the device can be seen, or it can be displayed in the form of a report. After inserting the USB flash drive, the data can be exported. It should be noted that the touch screen has limited RAM and you need to clean the RAM regularly every month After the formula is selected, directly enter the operation screen, click the "refrigerator on", and then click on the "automatic operation on". Data Recording Record freeze-dried data, which can be exported to U disk - 18 - Attentions 1.Must use a grounded power outlet. 2.Working environment temperature32, the humidity80%. 3.After drying finished, open the vent valve to inflate air at first, then close the vacuum pump to prevent sample contaminated by the pump oil. If a sudden power outage, open the vent valve immediately, and take out the samples as soon as possible, properly stored. 4.Keep the seal ring clean, and cannot Scrub with organic solvents. 5.Replace the vacuum pump's oil after working 100 hours, check and maintenance the pump regularly. 6. Do not frequently switch power supply and refrigerator, If the refrigerator is shut down caused by operation, at least three minutes to wait, and then restart the refrigerator. Common trouble and shooting 1 The vacuum cannot 2 less than 15Pa 3 4 1 Vacuum pump 2 injection 3 4 Check the connecting between vacuum pump and dryer, if the connector fitting correct and tightened? Check vent valve, if closed totally? Check the seal ring, if fitting correct? Check the vacuum pump working condition, if the oil clean? Check if some valve not closed, the chamber not in seal condition. Check if the pump oil level too high, the normal position is the middle of the gauge. Check if the pump oil emulsion? Check if the condenser's temperature too high, the pump should be start after the temperature lowered. - 19 - Warranty and maintenance 1.The dryer is warranty for one year from the date of sale. 2.The dryer is full life maintenance by our company. 3.Please check and keep the annex of dryer. Please send the warranty cards back to our company. We will fill the information into our files to provide services. CORRECT DISPOSAL This product is subject to the provision of european Directive 2012/19/EU. The symbol showing a wheelie bin crossed through indicates that the product requires separate refuse collection in the European Union. This applies to the product and all accessories marked with this symbol. Products marked as such may not be discarded with normal domestic waste, but must be taken to acollection point for recycling electrical and electronic devices. - 20 - Technical Support and E-Warranty Certificate www.vevor.com/supportWPS 文字