Benchtop High Speed Refrigerated Centrifuge BCBLR-309

1. Preface

In order to ensure safe operation of this centrifuge, please read through this instruction manual carefully and follow the instructions before use or maintain this centrifuge.

The centrifuge should be operated by trained specialists only.

Failure to follow this instruction and safety information in this instruction manual will result in the expiration of the seller's warranty.

2. Safety and cautions:

Safety and Cautions: safety and cautions aim at the safety operation of the centrifuge which was described in this instruction. In the interest of your own personal safety, please read it carefully before you install, operate, maintain and repair this centrifuge. Knowing this safety caution and proper operating skills, the operator can avoid the hurting as well as avoid the damage to the centrifuge.

2.1 Installation and maintenance cautions

1. The centrifugal chamber may contain rotors and other accessories in it, please open the lid to check and get out of it (if any) before installing. (If you order the machine with one rotor only, the rotor may already been installed onto the spindle properly).

2. When maintaining this centrifuge, all the parts which needed to remove the cover may cause electric injury. Make sure you already cut off the electricity and pulled the plug from the socket before maintaining this instrument. The maintaining work should be done by professional staffs.

3. Please use only rotors, accessories, replacement parts for this centrifuge which has been approved by us.

4. A safety zone of at least 30 cm must be maintained around the centrifuge. People, dangerous substances or objects must be kept out of the safety zone during the centrifugation run.

2.2 Electric cautions

1. To reduce the danger risk of the electric shocks, this centrifuge adopts three core plug which must be connected with three core socket which connects with earth wire.

2. Make sure the socket on the wall connects well with the earth wire. Make sure the power voltage must conform to the voltage this centrifuge required.

3. Do not use three-hole changing to two-hole expansion power adapter.

4. Do not use two wire expansion socket or multi-use power adapter which is not connect with the earth wire.

5. Do not put the container which is full of liquid on or near the centrifuge, because if the container is knocked over, the liquid may penetrate into the centrifuge, which would damage the components.

6. The main plug must be freely accessible at all times. Pull out the power supply plug or disconnect the power supply in an emergency.

To avoid can't disconnect the mains from the centrifuge in the event of errors occurring in time, an emergency switch which is separate from the centrifuge must be available, this switch should be outside the room in which the centrifuge is operated or next to the exit of the room.

2.3 Fire prevention cautions

1. Please use the same type specification overload insurance fuse. This machine use

the type specification for the fuse is BGXP ¢5x20, 250V 15A.

2. This centrifuge is not designed to separate flammable and explosive materials. Do not use this centrifuge to centrifuge these materials, do not put these kinds of materials in the centrifuge, or put such material in the safety zone.

2.4 Operation cautions

Do not start the centrifugation run before you cleaning the centrifuge chamber, otherwise damages might occur!

Always ensure the rotor has been securely fastened on the spindle, the samples have been balanced and the rotor lid (if equipped) has been screwed on the rotor tightly before each run.

Make sure the setpoint speed for the rotor you are going to run do not exceed its max speed allowed before each run (please refer to the rotor parameters).

1. Do not start the centrifugation run when the lid is open.

2. Never open the lid until the rotor has completely stop and this has been confirmed in the display.

3. In case of fault or emergency release, disconnect the centrifuge from the mains first,

open the lid only during rotor standstill.

4. Please do not lean on, lift up, or move the centrifuge before the rotor stop running.

5. Do not stretch anything into the centrifuge when the rotor is running.

6. When the centrifuge is running, according to EN / IEC 61010-2-020, no persons, dangerous substances or objects may be within the safety margin of 30 cm around the centrifuge. Please don't work in that range unless you need to debug the machine.

To avoid damage to the compressor, wait for at least 5 minutes after switch off the machine before switching on the machine again.

2.5 Chemistry & Biology cautions

1. Routine operation may include all kinds of solution and test samples which may be pathogenic, toxic or radioactive material, all the materials should not be centrifuged by this centrifuge unless protective measures have been adopted.

2. Please pay attention to the description of the solution on the original solution container before you are going to centrifuge it.

3. Be careful when you holding the liquid because they are contagious.

4. The operator should obey this instruction manual and method of the laboratory strictly when they operating this centrifuge.

5. All the waste solution must be destroyed according to the safety and protection demand of the environment.

6. When you ask for after-sale service, please make sure you had cleaned up the centrifuge.

3. Symbols & its meanings

Table 1

Note: The above symbols apply to all of our centrifuges, but not all symbols are used for this centrifuge.

4. Product introduction

4.1. Working principle

The centrifuge is a instrument which use the powerful centrifugal force which was generated by the high speed running of the rotor to accelerate the settlement of particles in solution, to make the samples of different subsidence coefficient and different density of the substance to be separated, concrete and pure.

When operate a centrifuge, loading equivalent volume solutions into each centrifuge tubes / bottles which you are going to centrifuge and load these centrifuge tubes / bottles into the positions of the rotor symmetrically (the centrifuge tube / bottle must be opposite each other to make sure the rotor can run at a balance state).

The relative centrifugal force (RCF) depends on rotational radius " r " and rotational speed (revolutions per minute) " n ", its computational formula as following:

RCF=1.118x10-5xn2xr(xg)

Among the formula:

n -- rotational speed (r/min)

r -- rotational radius (cm)

G -- gravitational acceleration (9.8 newton/kg)

The required centrifugal time T for particle separation sediment in the mixture solution was counted as the following computational formula:

Among the formula:

ρ -- mixed solution density (g/cm³)

μ -- mixed solution viscosity (P)

n -- rotational speed (r/min)

r -- rotor rotational radius (cm)

σ -- particle density (g/cm³)

Rmax -- the horizontal distance from bottom surface of centrifuge solution to

axis (cm)

Rmin -- the horizontal distance from solution surface to axis (cm)

Figure 1

fixed-angle rotor

Figure 2

swing-out rotor

Our centrifuge is with automatic rpm / rcf conversion function, do not need to manual calculation.

4.2 Product features

This centrifuge adopts induction motor driving, user-intuitive touch screen, corrosion-resistant stainless steel centrifuge chamber, additional inner steel armored guard ring, steel housing, steel lid, electronic lid interlock, imbalance protection and other safety technologies for safe operation. It can store 1000 programs and there are 40 acceleration rates and 40 deceleration rates available for daily use. TECUMSEH compressor and CFC-free refrigerant are adopted for the refrigerating system. The refrigerating/ heating double loops design makes the centrifuge cooling/heating fast as well as high precision. The operation parameters such as running speed/centrifugal force, running time can be modified during operation. The self trouble diagnosis system can detect speed, lid lock, motor failure and many other kinds of fault automatically and show the fault code. Safety, performance and operation simplified at every run.

The features are as below:

1.Due to the unique of shock absorber and the special design, the anti-vibration effect is good.

2. The speed control system adopts PID control method, it's with a high precision, 40 acceleration rates and 40 deceleration rates selectable.

3. Automatic calculation RCF value technical adopted.

4. Electronic lock system security the centrifuge work safely. The centrifuge can't start when the lid not lock.

5. All the rotors listed can reach below 4 °C at full speed and -20 °C at low speed.

4.3 Product use and application scope

This centrifuge is widely used in the field of biochemistry, agricultural science, environmental protection, clinical medicine, pharmacy, inspection and quarantine, radio-immunity and other research & manufacturing fields. It is a ideal separation equipment for colleges/universities, research institutes, and enterprises.

4.4 Position of parts

Figure 3

4.5 Electrical layout

Figure 4

5. Installation of the machine

5.1 Installation requirements

This centrifuge should be installed in the indoors, on a good, stable base, such as installed on a horizontal rigid solid laboratory worktable. No corrosive, conductive dust or damaging insulating air, and no powerful vibration source nearby, avoid direct sunlight.

To make sure the centrifuge can work properly, the install environment should fulfill the following conditions:

Environment temperature: 5°C ~ 40°C

Relative humidity:≤80%

Atmospheric pressure: 860hPa ~ 1060hPa

Supply voltage:AC 200 - 240V,50/60Hz

1. Space requirements

In order to ensure the in-out vent of cooling air the centrifuge demand, the set-up location must be well-ventilated at all times.

A safety zone of at least 30 cm must be maintained around the centrifuge. When the centrifuge is running, according to EN / IEC 61010-2-020, no persons, dangerous substances or objects may be within the safety margin of 30 cm around the centrifuge.

The dimensions of the centrifuge are shown in the diagram below:

Figure 5

2. Power supply requirements

The power for this centrifuge is single-phase 200-240V, 50/60Hz, 10A. The power should have protective earth wire. Do not use null line to instead of protective earth wire. If you are not sure about the power you are using, please contact your distributor or local electricity board.

For ensure the good grounding of the centrifuge, this centrifuge connects with a single-phase three core plug. If the plug can not put into your socket, please contact electrician to change your original socket to ensure the safe action of the single-phase three core plug.

To avoid can't disconnect the main from the centrifuge in the event of errors occurring in time, an emergency switch which is separate from the centrifuge must be available, this switch should be outside the room in which the centrifuge is operated or next to the exit of the room.

5.2 Machine installation

Remove the package (by the user)

Users should check the package appearance when receiving the product. Severe impact, recumbency and upend etc. should not happen during transportation. The package appearance should be well. Please contact with the cargo agent and inform our company in time if any damage is discovered.

First, remove the top cover of the package, get out of the rotor and accessories; Second, get out of the centrifuge from the package and place the centrifuge in a stable and level manner in a suitable place, such as place in the reserved horizontal rigid solid laboratory worktable (you can disassemble the plywood case by disassemble the four wood planks around the centrifuge, then you can get out the centrifuge easily). During set-up, the required safety margin of 30 cm around the centrifuge is to be kept according to EN / IEC 61010-2-020. Last, properly deal with the package and packing, not to pollute the environment, or save these for possible future transport of the centrifuge.

WARNING:

Never lift the centrifuge by the lid.

Always lift the centrifuge at the both sides on the bottom plate. Due to the net weight of this centrifuge is about 60 kg, the centrifuge need to be carried by several people. Avoid impact during the carry process, the centrifuge will be damaged by impacts.

After installation, the four rubber feet on the bottom of the centrifuge should afford uniform stress, otherwise the user should increase block and readjust to meet the demand.

The horizontal leveling of the centrifuge must be checked every time after moving it to a different location.

After transportation, the centrifuge should be left to stand for at least 2 hours before connecting to the power supply!

5.3 Installation and removal of rotor

1. Open the lid.

The lid can only be opened when the rotor is standstill.

5.3.1. Open the lid by using the emergency release switch.

Emergency release switch, there is a line below the front of the machine (on the left side), which is used when power failure or something is wrong with the lock. The usage method is as follows:

1. Turn off the power switch and unplug the power cord from the socket.

2. Pull this line, after heard a sound of unlock, you can lift the lid.

Figure 6

Schematic diagram of emergency release switch line position

(Note: This diagram is only used to illustrate the position of the bottom of the front cover of the machine and the appearance of the line connected with the emergency release switch. The specific position of the line which connected with the emergency release switch at the bottom varies among different models.)

The user can use the emergency release switch to open the lid when they open the lid first time during the initial installation. However, this emergency release should not be used at ordinary time.

If the user have to use the emergency release switch to open the lid, the user must make sure the rotor is standstill before they do it.

The emergency release switch should not be used at ordinary time, it can only be used when power failure or something is wrong with the lid lock.

3. Connect the centrifuge's plug to the power supply, switch on the main power switch on the right side of the machine, then tap the icon "Door", after you hear a sound of unlock, lift up the lid.

Take out the rotors and accessaries from the centrifuge chamber (if any) after opened the lid.

5.3.2. Installation of rotor

1. Installation of the collet chuck

Install the collet chuck onto the motor shaft and use an Allen key to turn the screw of the collet chuck clockwise. When the gap of the collet chuck is gradually approaching the protrusion of the motor ring, it is necessary to ensure that the protrusion of the motor ring is aligned and inserted into the gap of the collet chuck. Continue to tighten the collet chuck screw until there is an axial displacement of about 1 mm between the collet chuck and the collet chuck screw. (please refer to the installation diagram of collet chuck Figure 7 below).

Figure 7

Installation diagram of collet chuck

2. Installation of rotor

Choose the rotor you are going to run, then aim the collet chuck with the install

hole of the rotor/rotor cross and put the rotor/rotor cross down onto the collet chuck

vertically. Align the inner hole of the rotor/rotor cross with the collet chuck so that the

step surface inside the rotor/rotor cross is tightly attached to the end face of the collet

chuck. Use an Allen key to tighten the collet chuck screw clockwise, so that the outer

shaft surface of the collet chuck is tightly connected to the inner hole of the rotor.

Remove the key and complete the rotor installation. (please refer to the installation

diagram Figure 8 and Figure 9 below).

Attention:

If the collet chuck has been installed on the motor shaft, it is necessary to check

whether the protrusion of the motor ring is engaged in the gap of the collet chuck

before installing the rotor. If it is not inserted, the collet chuck must be reinstalled

according to Installation of the Collet Chuck described in before installing the

rotor. The final state of the protrusion of the motor ring being inserted into the gap of

collet chuck refers to the third item in Figure 7

Figure 8

Installation diagram of fixed-angle rotor

Figure 9

Installation diagram of swing-bucket rotor

For safety, always ensure the rotor has been securely fastened on the spindle before each run.

If the fixed-angle rotor equipped with a lid, cover the rotor lid before each run.

Rotate the angle rotor lid counterclockwise to loosen it, and clockwise to tighten it, as shown in Figure 10

Figure 10

3 Removal of rotor

Insert the Allen key into the collet chuck through the rotor installation hole, hold the rotor body with one hand, and turn the Allen key counterclockwise for about three turns with the other hand. Release the clamping force of the collet chuck, take out the Allen key, and lift the rotor upwards, as shown in Figure 11

Figure 11

5.4 Loading rotors

Always balance the samples.

Screw off the rotor lid (if the fixed-angle rotor equipped with a lid).

To ensure safe operation of the centrifuge, the rotor must be evenly loaded at all times. The centrifuge tubes / bottles must be filled with same volume solutions, the loaded centrifuge tubes / bottles must be opposite each other, the weight difference of the loaded tube racks / buckets (for swing-out rotor) should not exceed 1 g. Imbalanced running is strictly prohibited. There is serious accident will occur due to the imbalanced running.

Please check the maximum permissible revolutions of the test tubes / bottles (producer indication) .

1. Loading fixed-angle angle rotors

For the fixed-angle rotor, the loaded test solution for each tube / bottle should not exceed 75% of its nominal capacity as usual unless you can make sure the test tube / bottle can be 100% sealed. The test tubes / bottles must be loaded with equal weight solutions and must be loaded into the rotor symmetrically to make sure the rotor can run at a balanced state.

Figure 12

fixed-angle rotor proper loading sketch

Figure 13

fixed-angle rotor improper loading sketch

2. Loading swing-out rotors

For swing-out rotor, all of the buckets or tube racks must be installed inside the rotor cross before load the bottles / tubes into the rotor (if the swing-out rotor comes with tube racks, make sure all the steel sleeves were installed into the tube rack before load the tube in it as well.). To enable the rotor can centrifuge at a balanced state, please always obey the two criterion mentioned below during the rotor loading process:

1. For each bucket / tube rack, the placed tubes should enable the gravity center of the bucket / tube rack is at the center of the bucket/tube rack.

2. Opposing buckets / must be equally loaded.

The opposite bucket / tube rack loading should according to the bucket / tube rack which already loaded, make sure the loaded buckets / tube rack be opposite each other.

It is allowed to operate a 4 place rotor with 2 loaded buckets only, the loaded buckets must be opposite of each other. Make sure that the unloaded buckets are placed inside the rotor cross.

Figure 14

rotor improper loading sketch

Figure 15

rotor proper loading sketch

5.5 Close the lid

Screw on the rotor lid if the rotor lid was equipped (some of the fixed-angle rotors equipped with a lid) after the tubes / bottles were well placed, then press the lid down, the lid was locked after you heard a sound.

Do not put your fingers between lid and the housing.

Do not bang the lid shut.

5.6 Connect the power

Make sure the power connected with an earth wire before you connect the machine to the power, then switch on the power switch.

6. Operation

6.1 Basic operation steps

Before operating the centrifuge, you need to understand the type of rotor being used, the required speed/centrifugal force, runtime, and operating temperature. For detailed parameter settings, refer to Section 6.4 Set centrifugation parameters.

The basic operation process of the centrifuge is as follows:

1. Connect the power supply and turn the power switch to ( | ), which will illuminate the display screen.

Figure 16

1. Switch on

2. Switch off

2. Tap the icon "DOOR" to open the lid and lift it up.

3. Select the appropriate rotor and follow the steps in Sections 5.3 Installation and removal of rotor and 5.4 Loading rotors to complete sample loading, then close the lid.

4. Set the operational parameters: select the rotor model (automatic recognition models do not require manual setting), and set the speed/centrifugal force, temperature, runtime, acceleration rates and deceleration rates. For detailed operations, refer to Section 6.4 Set centrifugation parameters.

5. Tap the icon "RUN" to begin the centrifugation run.

6. Wait for the time to end or tap the icon "STOP" to end the run;

7. Once the rotor has completely stopped and a prompt sound is heard, tap the icon "DOOR" to open the lid. After hearing the unlocking sound, lift the lid, take out the samples, and clean the chamber.

8. After use, switch off the centrifuge power.

6.2 Debugging.

WARNING: Do not start the centrifugation run before you cleaning the centrifuge chamber, otherwise damages might occur!

Operate the centrifuge like the operation sequence No.6.1 described above, first choose low speed running(2 000 rpm), then increase 2 000 rpm gradually to the highest speed, if there is no exception, the debugging is successful.

6.3 Operating system description

This centrifuge adopted graphic user-intuitive touchscreen interface. The home screen shows as below(see Figure 17)

Icons & display explanation

Figure 17

"Home" screen

More explanation about the icon in the home screen

1. Program group: Display the program group number and name being called, with the temporary program group "000" displayed by default; Tap the icon to enter the program group interface, where you can view, modify, and call program groups.

2. FastTemp: Tap this icon will cause the system to run at 5000rpm and cool at maximum power. When the temperature in the centrifuge chamber reaches the set temperature, the rotor will automatically stop running and prompt. (Please confirm that the rotor is installed before starting this function!)

3. Stop/Run: Tap to start/stop running. Tap the icon " Run" to start

running, and the icon will change to " Stop" during runtime. Tap the icon to " Stop" to terminate the running.

Long press icon" Start" to start short run centrifugation, and the system will run to the set speed at the maximum rate; Stop the running after releasing the icon. The maximum short run time is 2 minutes.

4. Indicate the status of the lid. The icon indicating that the list is in the closed state. Tap the icon in this state can unlock the lid. The icon indicates that the lid is in the open state and cannot start the run when the lid is open.

5. Display the running time. Tap to switch the time display mode to count down timing, or count up timing, or continuous centrifugation timing. The upward arrow indicates count up timing and displays the running time. The downward arrow indicates a countdown timming and displays the remaining running time. The symbol Ꝏ indicats continuous centrifugation, the centrifuge will continue to run until the timing limit (99h59m59s), and the timing mode is count up timing. During operation, the display mode can be switched, but it cannot be switched to continuous centrifugation! Continuous centrifugation can be switched in the shutdown state.

6.4 Set centrifugation parameters

1. Set Speed / RCF value

Tap the rotation speed/centrifugal force icon on the left side of the

main interface to access to the speed/RCF set interface(see Figure 18), then enter

the desire speed value or RCF value on the keypad directly, tap "OK" to save the setting. According to the current installed rotor, the set speed value will be converted to centrifugal force automatically and displayed (The centrifugal force will also be automatically converted to rotational speed when setting centrifugal force, thus just set the speed or set the RCF is ok). If the speed setpoint or centrifugal force setpint is greater than the upper limit of the rotor installed, the set value cannot be saved.

Figure 18

Figure 19

speed / rcf set interface

Interface Description:

Tap it to switch the current settings between the speed setting and the

centrifugal force setting.

Delete key. Tap to delete the entered numerical value.

Confirm key. Tap to save the current set value.

Back key. Tap to back to the previous level.

Tap to switch the current settings between the speed setting and the

centrifugal force setting. Enter the desired numerical value on the keypad directly, Tap to confirm the settings. Tap to back to the previous page.

2. Set run time

Tap the icon on the home screen to access to the time set interface

(see Figure 20), then enter the desire time value on the keypad directly, tap "OK" to save the setting. If the time setpoint is greater than or equal to 1 hour, the timer in the home interface will automatically display hours : minutes; if the time setpoint is less than 1 hour, the timer in the home interface will automatically display minutes : seconds.

Figure 20

run time set interface

Interface Description:

: Tap it to move the cursor position and switch between setting numerical units.

: Delete key. Tap to delete the entered numerical value.

: Confirm key. Tap to save the current set value.

: Back key. Tap to back to the previous level.

3. Set temperature

Tap the icon on the home screen to access to the temperature set

interface(see Figure 21), then enter the desire temperature value on the keypad directly, tap the icon "OK" to save the setting. The temperature set range is -10°C to 40°C, if the setpoint beyond the range then the system will default to the maximum or minimum automatically. According to the use environment and set parameters, the refrigeration rate will be different. This centrifuge will begin to refrigerate toward the set temperature automatically after switch on the power switch. The factory commissioning is when the room temperature ≤25°C±2°C, all the rotors for this centrifuge can reach below 4°C at full speed within 10 minutes.

Figure 21

temperature set interface

Interface Description:

: Tap it to switch the temperature value to either above zero or below

zero.

: Delete key. Tap to delete the entered numerical value.

: Confirm key. Tap to save the current set value.

: Back key. Tap to back to the previous level.

4. Set acceleration and deceleration rates

Tap the icon on the home screen to access to the acceleration and deceleration rates set interface(see Figure 22), then enter the desire acceleration and deceleration on the keypad directly, tap "OK" to save the setting. The acceleration and deceleration set range is 1 to 40, 1 is fastest, 40 is the slowest(the declaration rate 40 is unbraked deceleration). The acceleration and deceleration rates time are varies according to the different capacity rotor, the larger the capacity of the rotor the acceleration and deceleration time will be longer, the smaller the rotor capacity is the faster the acceleration and deceleration.

Tap the key to switch between acceleration and deceleration rates settings. Enter numbers by using the numeric keypad and tap the icon to confirm the settings, or tap the back key to cancel the setting and back to the previous level.

Figure 22

acc/dec set interface

For the larger volume rotor, we suggest the user do not select the too fast acceleration and too fast deceleration, this is to protect the spindle of the motor and to enable the centrifuge can have longer service time.

5. user-defined programs

For user convenience, this centrifuge can store 1 000 programs, including the 999 user-defined programs numbered from 001 to 999 and 1 temporary program numbered 000. After modify the parameters of the program which called from the stored program group on the home screen, the modified parameters are automatically stored as the temporary program No. 000, and the parameters of the original program will not be modified. If you want to modify the parameters of the original program, please enter into the program group interface to modify it.

The preset program group has stored initialization data at the factory, users can modify it by themselves.

1. Tap the icon on the home screen to access to the program group

interface (see Figure 23). You can choose program or edit program parameters after enter

into the program group interface. Tap the program number can call the program to the

home screen. Tap any parameter of a program to enter the edit interface then can

modify the parameter.

2. After modify the parameters of the program called from the stored program group on the home screen, the modified parameters are automatically stored as the temporary program No. 000, and the parameters of the original program will not be modified. If you want to modify the parameters of the original program, please enter into the program group interface to modify it.

Figure 23

Program group setting instructions:

1. Call a program group

After selecting the program group, tap the icon to call this program group. If a temporary program group needs to be returned after calling, it can be achieved by modifying parameters on the main interface.

2. Add a program group

Tap the icon to add a new program group and set the program group parameters in the pop-up window. The program name can be entered with 1-15 characters, including uppercase and lowercase letters, numbers, and regular symbols.

3. Delete a program group

After selecting the program group, tap the icon to delete the program.

4. Modify a program group After selecting the program group, tap the icon to modify the program group notes and parameters.

4. Lock/Unlock Program Group

After selecting the program group, tap the icon to lock the program or tap the

icon to unlock the program group. The locked program group requires setting a password. The locked program group cannot be modified or deleted.

6.5 Function

Tap the function menu icon on the home screen to access to the function

menu interface(see Figure 24). On this interface, you can modify the user's permissions and passwords, adjust system settings, view device information, etc.

Figure 24

function menu interface

Function icon explanation

1. User Administration

Tap the user administration icon to enter into the user administration interface (see Figure 25), where you can set user account passwords, operation permissions, etc.

The system is divided into three levels of permissions: administrator, technician, and operator. Please refer to the appendix for user permission description table.

The default administrator account for the system is 001, the username is Administrator, the password is 1111. You can modify the username and password of this account.

Figure 25

user management interface

Setting Instructions:

1. Add new user

Tap the icon to add a new user. The username length is 1-15 characters, and the password length is 4-9 characters. The username cannot be duplicated.

2. Delete user

Select the account and tap the icon to delete the user.

3. Modify user

Select the user and tap the icon to modify the username, password, or permissions.

2. Run history

Tap the icon "Run Records" to enter into the page, then you can view the historical usage records. The system only records complete operational data, including the rotor information used, run speed, run time, acceleration rates, deceleration rates, temperature, and system time during the operation. Up to1000 records can be recorded, and if exceeded, it will automatically overwrite from the first record onwards.

3. Device information

Tap the icon "Device INFO" to enter into the page. You can check the main unit information, current installed rotor information, and all rotor types that can be matched with this model, including the rotor type, parameters, production date, rotor radius, and remaining usage times.

4. Events

Tap the icon "Events" to enter into the page. You can view the system operation records, including recording time, operating user, event ID, and event details.

5. Curve

Tap the icon "Curve" to enter into the page. You can view the real time curve graph of the current device's run speed, centrifugal force, temperature, and vibration over time. This function records data and draws a graph from the moment the host is turned on.

6. Step mode

Tap the icon "Step mode" to enter into the centrifugal mode interface (see Figure 26). The centrifugation mode can be switched to regular centrifugation or multi-stage centrifugation, and the multi-stage centrifugation parameters can be edited.

Figure 26

centrifugal mode interface