Kubota 2420 Nstruction And Service Manual
Kubota 2420 Nstruction And Service Manual

Kubota 2420 Nstruction And Service Manual

Table-top centrifuge
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To ensure proper operation of the centrifuge, be sure to read this manual
carefully before operating it.
Also, keep this manual handy so that you can refer to it at any time.
NOTE
■ The products being indicated in this Instruction manual are designed for opera-
  tors carrying expert knowledge and these products are to be used by these qu-
  alified operators observing the indicated precautions for respective purposes.
  For persons lacking necessary expert knowledge, these produces may be diffi-
  cult to use properly and even danger may be consequent upon the use.
  When the aforesaid persons lacking the necessary expert knowledge are using
  these products, do so under appropriate supervision and guidance of the quali-
  fied operators possessing the necessary expert knowledge.
■ Do not distribute this manual within the U.S.A., Mexico, Canada and Australia
as the Products advertised in the manual shall not be distributed in the U.S.A.,
Mexico, Canada and Australia.
For information added or modified after June 2005, please contact your local dealer.
29-9 HONGO 3-CHOME,BUNKYO-KU,TOKYO 113-0033,JAPAN
TABLE - TOP CENTRIFUGE
INSTRUCTION
and

SERVICE MANUAL

KUBOTA CORPORATION
May 2005, Printed in Japan
[ 40 Pages ]
F30241106

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Summary of Contents for Kubota 2420

  • Page 1: Service Manual

    Products advertised in the manual shall not be distributed in the U.S.A., Mexico, Canada and Australia. For information added or modified after June 2005, please contact your local dealer. KUBOTA CORPORATION 29-9 HONGO 3-CHOME,BUNKYO-KU,TOKYO 113-0033,JAPAN [ 40 Pages ]...
  • Page 2 Use of Model 2420 Model 2420 can be used for preprocessing in in-vitro analysis, which breaks down blood or urine samples containing plasmas or cells. Accordingly, it is not designed to connect directly to a patient's body.
  • Page 3: Safety Instructions

    Safety Instructions The centrifuge and the manual indicate important information in order to ensure safe operation of the centrifuge and to prevent physical injuries and property damages. Be sure to understand the meanings of the following indications and follow the instructions.
  • Page 4: Table Of Contents

    Table of Contents page page Safety Instructions General Notes ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Ⅰ 3 - 5 . Setting the Timer ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・3- 8 Usable Rotor ・...
  • Page 5 4- 8 .Sp are Parts Supply ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・4- 8 6 - 6 . RMP-23 Swinging Bucket Rotor・ ・ ・6-12 4- 9 . Manufacturer requirements at Repair [ 1] Sp ecification ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・6-12 or Maintenance ・...
  • Page 6: General Notes

    General Notes Be sure to follow them. Since large electrical and mechanical energies are present on the centrifuge and rotor, reasonable care is required for their handling. Otherwise, failure may occur resulting in property damages or fatal physical injuries. In order to prevent them from happening, be sure to follow the instruction given below. WARNING (1)...
  • Page 7 WARNING 3. Water pipes Lifetime of rotors City water pipes may not be Use of rotors beyond the lifetime adequate as a ground since it may lead to breakage of the rotor. may consist of plastic piping. If the rotor is used continuously even after the lifetime of the rotor Ensure that the ground cable is has expired, should the rotor get...
  • Page 8 CAUTION Toxic or radioactive substances etc. Balance of sample When centrifuging of substan- Keep the load (of the sample, ces contaminated with patho- bucket, etc.) balanced. genic bacteria, or toxic or radio- If an appropriate balance is not active substances, always use provided, unexpected accidents containers that are pathogenic can result from a damaged rotor...
  • Page 9: Usable Rotor

    Usable Rotor WARNING (1) Do not use any rotors other than those specified in (2) below. If rotors other than those specified are used, the rotors may be broken, resulting in a serious accident. (2) The rotors that can mount as of May 2005 are as follows: This information is subject to addition or change.
  • Page 10: Number Of Times Allowed For Autoclaving Of Rotor

    Number of times allowed for autoclaving of rotor WARNING Stop the use of the rotor immediately when it is used beyond the number of times allowed for autoclaving. Otherwise, the rotor may deteriorate by the heat generated by autoclaving, resulting in deformation or destruction. Should the rotor get damaged, the main unit of the centrifuge suddenly may start to rotate;...
  • Page 11: Component Name And Explanation

    Component Name and Explanation Section 1 Appearance 1 - 1. Hook Tachometer port Refer to Page 4-7. Chamber Drive Shaft Bucket intervention prevention plate This plate prevents the touch of the bucket. Do not remove this plate, when you remove the rotor. “...
  • Page 12: 1-2 .Control Panel

    Section1 Component Name and Explanation Control Panel 1-2. “ TIME" display “ SPEED/TIME"knob (Setting the speed, RCF and time. ) Refer to Page 3-6. “ SPEED" display “ START" key When this key is pressed (Speed / RCF ) the operation will be started.
  • Page 13: Installation And Power Supply

    Installation and Power Supply Section 2 Unpacking 2-1. When the centrifuge is taken out of a corrugated carton box, check the following. (1) Upon receiving the centrifuge, examine it for any visible damage caused during transportation. If any is found, contact the dealer immediately. (2)...
  • Page 14: 2 -4. Power Requirement

    Section 2 Installation and Power Supply CAUTION ■ When moving the centrifuge, lift up the bottom of the centrifuge body by two or more persons using equal forces to move the centrifuge to the desired place. ■ Do not drop the centrifuge, otherwise damage or injury may occur. Power Requirement 2-4.
  • Page 15 Section 2 Installation and Power Supply Grounding 2-5. Inlet NOTE When using the centrifuge for the first time, plug the power cable on the centrifuge into the inlet on the Power plug back of the centrifuge.   WARNING Ensure that the ground wire is connected to the grounding terminal. WARNING Do not connect the ground cable to the following places: 1.
  • Page 16: Section 3. Operation

    Operation Section 3 Cautions of Operation 3-1. When using this centrifuge, observe the contents of the Section "General Notes" being described in the front part of this document and the precautions given in respective sections. Operation  3-2. Operation 1. Turn on the “ POWER" switch . After the “...
  • Page 17 Section 3 Operati o n Operation 9. Press the “ START"key. “ Pip"sound and lamp on the “ START" key lights. S T A R T Value on the “ TIME ” display starts decrea- sing. When the value becomes 0 , the centrifuge automatically decelerates and stops.
  • Page 18 Section 3 Operation When the rotor has stopped, the “ STOP" lamp flashes and an sound that informs the end of the operation is issued. ● The “ Sound that informs the end of the operation ” can be selected from the 5 kinds + Refer to page 3-14.
  • Page 19: 3-3. Opening And Closing The Lid

    Section 3 Operation    Opening and Closing the lid 3-3. [ 1]Turning on the power and opening the lid (1) Turn on the the “ POWER" switch to turn the power on. The “ POWER" switch locates on the front side panel of the centrifuge.
  • Page 20: 3]Closing The Lid

    Section 3 Operation ◆ If the lid extreme release cap string is cut WARNING For prevention of electric shock, wait at least 5 minutes before opening the front lid. (1) Turn off the “ POWER" switch. (2) Remove the power supply plug from the outlet. (3)...
  • Page 21: 3 -4.Setting The Speed

    Section 3 Operati o n Setting the Speed  3-4. [ 1] Setting the speed by the rpm (1) Press the “ FUNCTION ” key. The “ SPEED ” display flashes and indicates the current setting. SPEED × 100rpm FUNCTION × 100 g (2)...
  • Page 22: 2] Setting The Speed By The Centrifugal

    Section 3 Operation [ 2] Setting the speed by the centrifugal force ( × g) (1) Press the “ FUNCTION ” key. The “ SPEED ” display flashes and indicates the current setting. SPEED × 100rpm FUNCTION × 100 g (2)...
  • Page 23: 3 - 5 . Setting The Timer ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・3

    Section 3 Operati o n Setting the Timer 3-5. (1) Pressing the "FUNCTION" key 2 times, the “ TIME ” display flashes and indicates the current setting. The timer is able to be set up. FUNCTION (2) Pressing “ SPEED/TIME" knob changes the settable range of centrifuging time as des- cribed below.
  • Page 24: 3-6. Setting The Acceleration・Deceleration

    Section 3 Operation Setting the acceleration・deceleration 3-6. When blowing-up of samples is feared, adjust the acceleration and the deceleration setting by pressing the “ ACC/DEC ” key SL OW RAPID acceleration acceleration It changes to the SLOW characteristic from RAPID at 1000rpm. [Ex.]...
  • Page 25: 3 - 7 . Saving The Memory ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・3-10

    Section 3 Operati o n Saving the Memory 3-7. Saving the setting value enables operation with the same setting value repeatedly. [ 1]Saving the Memory (1) Set the respective parameters. Refer to the following page for the setting method. [3-4 . Setting the speed ] Refer to Page 3-6.
  • Page 26: 3 - 8 . Setting The Function ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・3-11

    The page where the content is written is referred to. NOTE The memory lamp turns off temporarily, when you set the function while setting the memory operation in Model 2420. The lamp is lighted after the setting. FUNCTION (1) Pressing the "SPEED/TIME" knob while holding down the "FUNCTION"...
  • Page 27: 1] Setting The Rotatio N Radius ・ ・ ・ ・ ・ ・ ・3-12

    Section 3 Operati o n [ 1] Setting the Rotation Radius To obtain more accurate centrifugal force, adjust the rotation radius to that of the rotor buckets. Factory default : 146 mm . Pressing the “ SPEED/TIME ” knob while holding (1...
  • Page 28: [ 2] Setting The "Slow" Deceleration

    Section 3 Operation [ 2] Setting the "SLOW" deceleration The characteristics have become as shown in the graph. You can set the natural deceleration starting speed N by the following method. Factory default , it is set as 0 rpm . The setting range of "N"...
  • Page 29: 3]Setting The Sound That Informs

    Section 3 Operati o n [ 3]Setting the Sound that informs the end of the operation The “ Sound that informs the end of the operation ” can be selected from the 5 kinds + Sound none. Use this function to identify each “ Sound that informs the end of the operation ” when you use more than one centrifuges.
  • Page 30: 4]Reverse Of Setting Order Of

    Section 3 Operation [ 4] Reverse of setting order of the Speed and the Timer The setting order of the speed and the timer can be reversed. This function is useful when you often operate the centrifuge by changing the timer only.
  • Page 31: [ 5] Setting The Reminder Alarm

    Section 3 Operati o n [ 5] Setting the Reminder alarm The alarm reminds the user every minute when samples are left inside the centrifuge after completion of the operation. The reminder alarm goes off when opening the lid or performing some opera- tions.
  • Page 32: 6]Setting The Indicators For

    Section 3 Operation [ 6] Setting the Indicators for the end of the operation Completion of the operation is indicated not only with an alarm but also with the "SPEED" and "TIME" displays. The "Alarm Indicators" can be selected from the 5 kinds. Factory default : [...
  • Page 33: 3 - 9 . Calculating Centrifugal Force・ ・ ・ ・ ・ ・3-18

    Section 3 Operati o n Calculating Centrifugal Force 3-9. You can readily calculate the centrifugal force by assigning the Rotation Radius and speed in the following equation: [formula 3-1] Spe ed N ( rpm ) C entrifugal force RCF( × g)= 11.18 × ×...
  • Page 34: Section 4. Service

    Service Section 4 Daily Inspection 4-1. WARNING If any abnormality is found during routine daily inspections, discontinue centrifuge operation, use the "POWER" switch to turn the machine OFF, disconnect the power cable, attach "DO NOT USE" labels to the rotor and the outside of the centrifuge, and contact your nearest dealer to request a centrifuge inspection before resuming operation of the equipment.
  • Page 35: 4 - 3 . Annual Inspection ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・4-2

    Section 4 Service Monthly Inspections 4-2. [1 ] Inspect the rotor WARNING Perform a monthly careful inspection of the rotor appearance. Check for any deformation or damage, including the interior and bottom of the holes. If any abnormality whatsoever is found, there may be significant damage or corrosion of the rotor that could lead to serious damage or accidents involving physical injury.
  • Page 36: 4 - 4 . Cleaning And Sterilization ・ ・ ・ ・ ・ ・ ・ ・ ・4-3

    Section 4 Service Cleaning and Sterilization 4-4. WARNING Consult with your nearest dealer prior to attempting any cleaning procedure for the rotor, buckets, or tube rack that is not specifically recommended in this manual. Certain cleaning methods or cleaning agents may cause corrosion and then breakage leading to serious damage or accidents involving physical injury.
  • Page 37: 2] Cleaning The Rotor, Buckets And

    Section 4 Service [2 ] Cleaning the rotor, buckets and tube rack CAUTION Do not use detergents exceeding a pH range of 5 - 8, or chlorinated detergents normally used for washing. Corrosion may damage the rotor, bucket, or tube rack, resulting in damage to the centrifuge that may lead to serious additional damage or accidents involving physical injury.
  • Page 38 Section 4 Service Greasing 4-5. CAUTION Be careful to maintain lubrication by ensuring that a proper amount of grease is present in all bucket grooves (section "A" in the schematic diagram below). A lack of grease may allow violent vibration to occur, resulting in damage to the centrifuge.
  • Page 39: 4 - 6 .Inspection Of Circuit Protector ・ ・ ・ ・ ・4-6

    Section 4 Service Inspection of Circuit Protector 4-6. The circuit protector is automatically activated when the electric circuit failure or overcurrent occur. In such a case, the white portion of the circuit protector, located at the bottom left on the rear side of the centrifuge, will stick out.
  • Page 40: 4-7. Using The Photoelectric Tachometer Port

    Section 4 Service Using the Photoelectric Tachometer Port 4-7. A tachometer port (transparent window) is provided at the top of the lid. Through the tachometer port, the actual rate of rotation can be measured, using a photoelectric tachometer. (1) When using a photoelectric tachometer, place a piece of reflective tape 5 - 20mm away from the center of the rotor.
  • Page 41: 4- 9 . Manufacturer Requirements At Repair

    [1 ] Required information when submitting an inquiry Necessary information Note 1. Model 2420 2. Serial number See the name label at the left side panel of centrifuge. 3. Trouble Provide a description of the trouble as detailed as possible.
  • Page 42: 4 -10. Product Preparation When Returning

    Section 4 Service Product Preparation When Returning 4-1 0. Units for Repair or for Other Reasons [1] Remove any contaminants from units or items that will be returned for servicing Prior to sending back our products (including accessories) for repair or for other reasons, be sure to remove any and all contaminants.
  • Page 43: Contaminant Elimination Certificate

    Please make a copy of this page and fill out the relevant details. Contaminant Elimination Certificate Date :     ,    ,    Name:              Company / Institute:                                     Department:                                     Tel:                              Fax:                             Address: We hereby certify that contaminant elimination for this equipment has been performed as follows: Type of unit:            ...
  • Page 44: Section 5. Troubleshooting

    Troubleshooting Section 5 Alarm Indicators 5-1. (1) When trouble occurs during operation, the “ TIME" display flashes to indicate the alarm. (2) When any of the alarms become activated during ope ration (whe n the rotor is spin- ning), the rotor immediately dece lerates and stops. [Ex.] “...
  • Page 45 Section 5 Troubleshooting Alarm Checkpoint Action taken Indicators Time alarm for rotor inspection Because the inspection time has The inspection time for the rotor has arrived, the alarm is displayed. arrived. 1-5 represents the level of the number Contact your nearest dealer for of times of rotor use.
  • Page 46: 5-2 .Error Indicators

    Section 5 Troubleshooting Error Indicators 5-2. (1) When trouble occurs during operation, the “ TIME" display flashes to show the error. The error indicators are mentioned in the table below. (2) When any of the error indicators turn on during ope ration (when the rotor is spinning), the rotor immediately dece lerates and stops.
  • Page 47 Section 5 Troubleshooting Error Checkpoint Action taken Indicators Speed sensor error After the rotor stops spinning, turn This indicator flashes when the off power supply once and turn on self-inspection function detects the the power after about 30 seconds. fault or abnormality in the speed When the error recurs, contact your sensor.
  • Page 48: 5-3. Troubleshooting

    Section 5 Troubleshooting Troubleshooting 5-3.    Problem      Checkpoint Action taken Is the power plug disconnected Insert the power plug into the 1. The “ STOP ” from the power outlet? socket. key lamp does not lit even if the Is power supplied to the socket or Inspect the power supply.
  • Page 49 Section 5 Troubleshooting    Problem     Checkpoint Action taken Distribute buckets and tubes Are buckets and tubes correctly correctly.When the error recurs, distributed? (Note 3) contact your nearest dealer for inspection. Spray lubricant to buckets and Do the buckets swing smoothly? trunnion pins.
  • Page 50: Section 6. Rotor

    Rotor Section 6 Mounting RS-240 Rotor 6-1. When you purchase the centrifuge and rotor together, the rotor will be in the state of being mounted on the centrifuge. When replacing the rotor or when the rotor is removed for some reason, refer to the mounting procedure in the manual for each rotor.
  • Page 51: 6-2 . Mounting Rs-1004 Rotor ・ ・ ・ ・ ・ ・ ・ ・ ・6

    Section 6 Rotor Mounting RS-1004 Rotor 6-2. CAUTION   Make sure that the rotor yoke is firmly fastened to the drive shaft with the rotor knob. Since the rotor is not fastened onto the shaft when these parts are loose,excessive vibrations will occur and damage the equipment and the rotor may fly off inflicting physical injury.
  • Page 52: 6-3 . Mounting Rmp-23 Rotor ・ ・ ・ ・ ・ ・ ・ ・ ・6

    Section 6 Rotor Mounting RMP-23 Rotor 6-3. CAUTION   Make sure that the rotor yoke is firmly fastened to the drive shaft with the rotor locking nut. Since the rotor is not fastened onto the shaft when these parts are loose,excessive vibrations will occur and damage the equipment and the rotor may fly off inflicting physical injury.
  • Page 53: 1] Sp Ecification ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・6

    Section 6 Rotor RS-240 Swinging Bucket Rotor 6-4. [ 1]Specification 4 , 0 0 0 Maximum Speed (rpm) 2, 6 1 0 Maximum R C F ( × g) eight ( 1 . 6 Maximum W R Nomi- Maxi- Num- Allow- Allow- Capa-...
  • Page 54 Section 6 Rotor Nomi- Maxi- Num- Allow- Allow- Capa- Tube Sizes able Radius able Tube rack / Dia. × Length Bucket Adaptor Cushion city Tubes Tubes Speed R C F load Tube Material Form Code No. × g Code No. Code No.
  • Page 55: 2] Setting Bu Ckets ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・6

    Section 6 Rotor [2] Setting Buckets CAUTION The same type buckets must be provided to every (4places) rotor yoke. If not positively held in place, the rotor or centrifuge can be damaged, thereby causing accidents. Correct Wrong Different types of buckets are used.
  • Page 56: 4] Cushion S / Adapter ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・6

    Section 6 Rotor [ 4]Cushions / Adapter When glass tubes are used, be sure to use the cushion to avoid damage. Insert the cushion into the tube rack so that its concave side faces upward. Glass tube If a glass tube is damaged, replace the cushion. Bucket If broken pieces of the glass tube are contained in the cushion, the glass tube will be broken again.
  • Page 57 Section 6 Rotor ( 2 )Cushion for Carrier The cushion for the carrier is shaped like a sheet. The cushion is placed on the bottom of the carrier. [ Ex. ] Carrier Code No.053-5030 Cushion for carrier Carrier Cushion 6ml Glass tube Code No.
  • Page 58 Section 6 Rotor ( 4 )Cushion for 50 ml conical tube The cushion (Code No.024-1480) is fitte d to the bucke t (Code No.053-5010) and is Cushion for 50ml exclusively used for the 50ml conical tube Code No.024-1480 (culture tube). Bucket Code No.053-5010 (...
  • Page 59: 6 -5. Rs-1004 Swinging Bucket Rotor ・ ・ ・6-10

    Section 6 Rotor RS-1004 Swinging Bucket Rotor 6-5. [1] Specification Maximum Speed (rpm) 4 , 0 0 0 Maximum R C F ( 2 , 5 9 0 × g) eight ( Maximum W 1 . 9 R Nomi- Maxi- Num- Mate- Allow-...
  • Page 60: 2]Setting Buckets ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・6-11

    Section 6 Rotor [2] Setting Buckets CAUTION The same type buckets must be provided to every (4places) rotor yoke. If not positively held in place, the rotor or centrifuge can be damaged, thereby causing accidents. Correct Wrong Different types of buckets are used.
  • Page 61: 6 - 6 . Rmp-23 Swinging Bucket Rotor・ ・ ・6-12

    Section 6 Rotor RMP-23 Swinging Bucket Rotor 6-6. [ 1]Specification 4 , 0 0 0 Maximum Speed (rpm) 1 , 7 9 0 Maximum R C F ( × g) eight ( 1 . 6 Maximum W R 2 R X A...
  • Page 62: [2]Check The Trunnion Pin

    Section 6 Rotor [2]Check the trunnion pin CAUTION Check the trunnion pin (4 places) is not loosened. If the trunnion pin is loosened, the rotor or centrifuge can be damaged, thereby causing accidents. If the trunnion pin is loosened, contact your local dealer for inspection.
  • Page 63: 4] Distribution Of Samples ・ ・ ・ ・ ・ ・ ・ ・ ・ ・6-14

    Section 6 Rotor [4]Distribution of samples CAUTION ■ Keep the load (of the sample) balanced. If an appropriate balance is not provided, unexpected accidents can result from a damaged rotor or centrifuge. ■ Keep the load balanced symmetrically within 5 gram. Correct Wrong ●...
  • Page 64: 6] Allowable Weight Of Plate ・ ・ ・ ・ ・ ・ ・ ・6-15

    Section 6 Rotor [6] Allowable weight of plate WARNING ■ When pile up the micro plate to each bucket in 3 steps, use it after the sufficient test for the strength of the plate is made. The more the micro plates are piled up, the easier the plate at the lower position becomes damaged.
  • Page 65: Section 7. Specifications

    Specifications Section 7 Centrifuge 7-1. 4,000 rpm Max. speed 2,610 × g Max. RCF 400ml Max. Capacity Invertor Microprocessor control, Speed, Centrifugal force, time, Control system acceleration / deceleration, 3 memory Rapid, Slow, 4 ways of switching Acceleration/Deceleration Lid open, Imbalance, Over speed, Function for detecting an occurrence of electrical abnormality in speed sensor, invertor, Lid Alarm display rock, Motor...
  • Page 66: Section 8. Parts List

    Parts List Section 8. Recommended Spare Parts 8-1. Code No. Description Use , standard Q'ty 014-0061 Micro switch VX-016-1A3 014-0071 V-102-1A5 Micro switch 029-0010 Speed sensor 029-0009 CTL PC board Without ROM 066-0016 CPU ROM 014-0056 Invertor VFNC1S-1002P, For 100-115V 014-0057 Invertor VFNC1S-2002PL, For 200-240V...
  • Page 67 Index Acceleration ・ Deceleration 1-2, 3-9 Reduced maximum speed 3-18 1-2, 3-9 3-16 ACCEL Reminder alarm 3-18 Allowable load Reverse of setting order of 3-15 Appearance the Speed and the Timer Ⅴ 3-12 Autoclaving Rotation Radius 3-18 Calculating Centrifugal Force 3-14 Centrifugal force(×g) Sound that informs...

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