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Sorvall TC6 Service Manual

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SORVALL
TC6
IMPORTANT INFORMATION REGARDING USE OF THIS MANUAL
This manual provides technical information for the proper servicing of the product(s) specified. This manual is
intended only for use by Sorvall Service personnel, or by qualified technicians who have been trained by Sorvall
in the safe, proper servicing of that product.
This manual has been designed as a supplement to training, not a substitute for training; servicing should not
be attempted by untrained personnel. Technicians who have not been trained by Sorvall are not familiar with the
product design or the hazards that may be encountered during servicing. In addition, lack of training can result
in faulty repair – possibly making subsequent product use dangerous, or product yields unreliable.
Although content of this manual is believed to be adequate for its intended use, Sorvall makes no representa-
tion or warranty regarding completeness, adequacy or otherwise (not even as a supplement to a given training
course) and assumes no obligation or liability. In the event a qualified, trained technician is unable to repair the
product using this manual, Sorvall Technical Service should be contacted for additional guidance.
Service Manual
PN 78006
®
READ BEFORE USING
Parts Section
Updated March '02
®

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Summary of Contents for Sorvall TC6

  • Page 1 This manual provides technical information for the proper servicing of the product(s) specified. This manual is intended only for use by Sorvall Service personnel, or by qualified technicians who have been trained by Sorvall in the safe, proper servicing of that product.
  • Page 2 OPERATING INSTRUCTIONS ® ® SORVALL TC6 Tabletop Centrifuge Sorvall Products, L.P. Newtown, Connecticut U.S.A. PN 78006-1 Issued August 1996...
  • Page 3 Because failure to follow the recommendations set forth in this manual could produce personal injury or property damage, always follow the recommendations set forth herein. Sorvall does not guarantee results and assumes no obligation for the performance of rotors or other products that are not used in accordance with the instructions provided.

  • Page 4: Table Of Contents

    ® Table of Contents Table of Contents Paragraph Page Section 1. INTRODUCTION and DESCRIPTION 1-1. Intended Use of Manual ..........1-1 1-2.

  • Page 5: Paragraph

    ® Table of Contents SORVALL Centrifuges Table of Contents (continued) Paragraph Page Section 5. REPAIR and REPLACEMENT 5-1. Latch Replacement ........... 5-1 5-2.
  • Page 6 8-1. Parts: TC6 Main Assembly ......... . . 8-3 8-2.
  • Page 7 ® Table of Contents SORVALL Centrifuges List of Illustrations (continued) Figure Page 4-14. Power Supply Printed Circuit Board Assembly, PN 78049 Rev. 1 ... . 4-31 4-15. Schematic for Motor Control Printed Circuit Board, PN 78230 Rev. 4 ..4-33 4-16.
  • Page 8 ® Table of Contents Contents Section 1. Introduction and Description Page 1.1. Intended Use of Manual ......... . 1-1 1-2.

  • Page 9: Section 1. Introduction And Description

    Sorvall personnel, either Because of the character- at the customer’s laboratory or at a Sorvall facility, comply with the istics of the samples likely to be pro- following procedure to ensure the safety of all personnel:...
  • Page 10 If the centrifuge or rotor must be returned to a Sorvall facility: 1. Contact your Sorvall representative to obtain a Return Service Order Number (RSO No.). Be prepared with the name and serial number of the centrifuge or rotor and the repairs re- quired.

  • Page 11: Warranty Responsibility

    Sorvall will in no event be liable for any special or consequential damages, and our liability under no circum- stances will exceed the contract price for the goods for which liability is claimed.

  • Page 12: Centrifuge Description

    SORVALL Centrifuges 1-4. Centrifuge Description ® The TC6 is a lowspeed, non-refrigerated tabletop centrifuge that features digital readout displays, a dc brushless (maintenance free) motor, a closed-loop speed control, a removable stainless steel rotor chamber, ergonomically designed front panel control knobs and switches, and has a see-through chamber door that allows rotor calibration and visual inspection of a run in progress.

  • Page 13: Controls, Displays, Switches And Indicators

    Introduction and Description 1-6. Controls, Displays, Switches and Indicators ® Figure 1-1 shows the TC6 control panel and provides a brief de- scription for each control, display, switch and indicator. Table 1-1 (on the next page) gives a complete description.

  • Page 14: Description Of Controls, Displays, Switches And Indicators

    ® Introduction and Description SORVALL Centrifuges Table 1-1. Description of Controls, Displays, Switches and Indicators SPEED display Indicates actual rotor speed from 0 to 6000 rpm (± 1% or 10rpm, which- ever is greater). TIME display Indicates set run time at the begin-...
  • Page 15 ® Table of Contents SORVALL Centrifuges Contents Section 2. Installation and Operation Page 2-1. Inspection ............2-1 2-2.

  • Page 16: Section 2. Installation And Operation

    Check the parts received with the centrifuge against the shipping proper lifting techniques can result in personal injury and/or possible dam- list; if any parts are missing, contact Sorvall (see office list in back of age to the centrifuge. manual).

  • Page 17: Electrical Requirements

    (SN 9501733 and Below) The voltage is set by the voltage selector (in the fuse block) located ® in the power connector on the back of the TC6 (refer to figure 2-1 for SN 9501733 and below). The current voltage setting (100, 110**, 220, or 240) is displayed in the window of the fuse block.
  • Page 18 • 100 or 110 setting requires two 3.15-amp fuses, (PN 91428), Incorrect installation can result in damage to the centrifuge. Sorvall is • 220 or 240 setting requires two 2-amp fuses, (PN 91203). responsible incorrect installation.

  • Page 19: Installation

    W A R N I N G in temperature is caused by variables including rotor speed, length of the run, and the type of rotor. Blocking the air flow enter- ing and/or exiting the TC6 ® centri- fuge will cause an increase in tem- Air flow through the TC6 ®...

  • Page 20: Running Hazardous Material

    2-7. Running Hazardous Material W A R N I N G ® Because the centrifuge chamber of the TC6 is not designed for When using radioactive, biocontainment, some vapors or aerosols released from uncapped, toxic, or pathogenic materials, be leaking or broken tubes may leak from the chamber during operation.

  • Page 21: Operation

    ® Installation and Operation SORVALL Centrifuges 2-8. Operation To perform the run: W A R N I N G Be sure the rotor chamber 1. Set the POWER switch to "I". and chamber door gasket are installed before the centrifuge run. Operating 2.

  • Page 22: Emergency Sample Recovery

    ® Installation and Operation 2-9. Emergency Sample Recovery If the main power shuts off because of a power failure or system malfunction, the chamber door will not open. A mechanical over- ride is provided to allow sample recovery in the case of an emer- gency.

  • Page 23: Installation Checklist

    ® SORVALL Centrifuges ® TABLETOP CENTRIFUGE INSTALLATION CHECKLIST Institution _________________________________ Date _________________________________ Street Address _____________________________ Serial Number _______________________ ___________________________________________ Packing List No.______________________ City _______________________________________ User _________________________________ State/Province _____________________________ Installed by __________________________ Postal Code ________________________________ Country ___________________________________ Phone No. _________________________________ Inspection...
  • Page 24 ® Table of Contents Contents Section 3. System Descriptions Page 3-1. General System Description ........3-1 3-2.

  • Page 25: Section 3. System Descriptions

    ® System Descriptions Section 3: SYSTEM DESCRIPTIONS 3-1. General System Description ® The TC6 is an assembly that consists of the following: • Power System • Drive Motor System • Control System • Input/Output System • Cabinet System • Ventilation System •...

  • Page 26: Power System

    3-4. Brushless Motor Drive Electronics ® The TC6 drive is a type of power inverter motor drive. The func- tional purpose is to convert raw single phase ac power into syn- chronous three-phase power to the motor. This is accomplished in several stages.
  • Page 27 Power Inversion from dc to ac – The unregulated dc power available ® in the TC6 must be converted back to phased ac power for the motor to operate. This process is called inversion. For proper control of motor rotation, the drive must synchronize the application of power precisely with the rotational position of the rotor.
  • Page 28 ® System Descriptions SORVALL Centrifuges a. Theory of Operation The drive is built with Motorola's MC33035 and a support chip MC33039. The MC33035 is a 24-pin linear integrated circuit (I.C.) that operates as the control center for the brushless dc motor control system. The...
  • Page 29 ® System Descriptions c. Control Features The MC33035's circuitry contains all except one major element for closed-loop speed control. The missing element is that which monitors motor rpm (speed) and generates a signal proportional to motor speed, a function that has been the domain of a tachometer Once provided with a motor speed signal, the MC33035's high performance error amplifier and its internal oscillator form the last major links in the speed control loop.

  • Page 30: Speed Control

    ® System Descriptions SORVALL Centrifuges For closed-loop control, one approach is to filter the MC33039's output with a low pass filter to generate a voltage proportional to motor speed and feed the resulting signal into the inverting input of the MC33035's comparator. A signal proportional to desired motor speed drives the non-inverting input, and the ratio of the input and feedback resistors R3 and R4 control gain.

  • Page 31: Timer

    ® System Descriptions The motor has three Hall-effect sensors internally mounted to generate pulses as the motor turns. These pulses are monitored by the MC33035 allowing the controller to change the width of the pulse sent to the motor drive to control the speed. The wider the pulse, the faster the motor runs.
  • Page 32 ® Table of Contents SORVALL Centrifuges Contents Section 4. Printed Circuit Boards and Schematics Figures Page 4-1. System Wiring Diagram, Rev. 3 ........4-3 4-2.

  • Page 33: Section 4. Printed Circuit Boards And Schematic Diagrams

    Printed Circuit Boards & Schematic Diagrams Section 4: PRINTED CIRCUIT BOARDS and SCHEMATIC DIAGRAMS This section contains a system wiring diagram as well as schematic diagrams and component description tables for printed circuit boards found in the TC6 ® Tabletop Centrifuge. 4-1/4-2...
  • Page 34 ® Printed Circuit Boards & Schematic Diagrams Figure 4-1. System Wiring Diagram, (SN 9501734 and above) (SN 9600946 and above, 60 Hz only, Do Not Use Line Filter) 4-3/4-4...
  • Page 35 ® Printed Circuit Boards & Schematic Diagrams Figure 4-2. System Wiring Diagram, (SN 9501733 and below) 4-5/4-6...
  • Page 36 ® Printed Circuit Boards & Schematic Diagrams Figure 4-3. Schematic for Control Printed Circuit Board, PN 78189 Revision 3 4-7/4-8...
  • Page 37 ® Printed Circuit Boards & Schematic Diagrams Figure 4-4. Control Printed Circuit Board Assembly, PN 78189 Revision 3 4-9/4-10...
  • Page 38 ® Printed Circuit Boards & Schematic Diagrams Table 4-1. Component Description, Control Printed Circuit Board, PN 78189 Revison 3 (refer to figure 4-4) Component Description Resistor, 1.0 KΩ, 1/4W, 5%, Carbon Comp. R15, R16, R18, Resistor, 10 KΩ, 1/4W, 5%, Carbon Comp. R20, R23, R24, R25 Resistor, 1.0 MΩ, 1/4W, 5%, Carbon Comp.

  • Page 39: Component Description, Control Printed

    ® Printed Circuit Boards & Schematic Diagrams SORVALL Centrifuges Table 4-1. Component Description, Control Printed Circuit Board, PN 78189 Revision 3 (continued) (refer to figure 4-4) Component Description I.C., CMOS, Quad AND, MC74HC08N I.C., CMOS, 3 Input NAND, MC74HC10N U4, U6, U22 I.C., CMOS, Quad NAND, MC74HC00N...
  • Page 40 ® Printed Circuit Boards & Schematic Diagrams Figure 4-5. Schematic for Display Printed Circuit Board, PN 78178 Revision 4 4-13/4-14...
  • Page 41 ® Printed Circuit Boards & Schematic Diagrams Figure 4-6. Display Printed Circuit Board Assembly, PN 78178 Revision 4 4-15/4-16...

  • Page 42: Component Description, Display Printed

    ® Printed Circuit Boards & Schematic Diagrams Table 4-2. Component Description, Display Printed Control Board, PN 78178 Revision 4 (refer to figure 4-6) Component Description R1, R2 Resistor, 4.7 KΩ, 1/4W, 5%, Carbon Comp. R3, R4, R5 Resistor, 82Ω, 1/4W, 5%, Carbon Comp. Capacitor 0.01 µF, 50V C1, C2, C3,C4, C5, C6, C7, C8,...
  • Page 43 ® Printed Circuit Boards & Schematic Diagrams Figure 4-7. Schematic for Display Printed Circuit Board, PN 78178 Revision 2 4-19/4-20...
  • Page 44 ® Printed Circuit Boards & Schematic Diagrams Figure 4-8. Display Printed Circuit Board Assembly, PN 78178 Revision 2 4-21/4-22...

  • Page 45: Component Description, Display Printed

    ® Printed Circuit Boards & Schematic Diagrams Table 4-3. Component Description, Display Printed Circuit Board, PN 78178 Revision 2 (refer to figure 4-8) Component Description Capacitor, 0.01 µF, 50V C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C13, C14, C15 Capacitor, 47 µF, 6V CR1, CR2,...

  • Page 48: Component Description, Power Supply Printed

    ® Printed Circuit Boards & Schematic Diagrams SORVALL Centrifuges Table 4-4. Component Description, Power Supply Printed Circuit Board, PN 78049 Revision 4 (refer to figure 4-10) Component Description Resistor, 1000 Ohm, 5W, 5%, Wirewound Capacitor, 100 µF, 10V Capacitor, 6800 µF, 16V Capacitor, 8200 µF, 50V...
  • Page 50 ® Printed Circuit Boards & Schematic Diagrams SORVALL Centrifuges Figure 4-12. Power Supply Printed Circuit Board, PN 78049 Revision 2 4-28...

  • Page 51: Component Description, Power Supply Printed

    Rectifier, Bridge, 100V/1W Rectifier, Bridge, 100V/4A Diode, Silicon, 100V, 1A, IN4002 or IN4002GP Fuse, 6.3A, 250V, Fast Acting, 5 x 20 mm (Sorvall PN 91398; Little PN 21706.3) Fuse, 1.6A, 250V, Fast-Acting, 5 x 20 mm (Sorvall PN 91397; Little PN 21701.6)

  • Page 54: Component Description, Power Supply Printed

    ® Printed Circuit Boards & Schematic Diagrams SORVALL Centrifuges Table 4-6. Component Description, Power Supply Printed Circuit Board, PN 78049 Revision 1 (refer to figure 4-14) Component Description Capacitor, 8200 µF, 50V, Aluminum C1, C2 Capacitor, 100 µF, 10V, Aluminum Capacitor, 4600 µF, 16V, Aluminum...
  • Page 55 ® Printed Circuit Boards & Schematic Diagrams Figure 4-15. Schematic for Motor Control Printed Circuit Board Assembly, PN 78230 Revision 4 4-33/4-34...
  • Page 56 ® Printed Circuit Boards & Schematic Diagrams Figure 4-16. Motor Control Printed Circuit Board Assembly, PN 78230 Revision 4 4-35...
  • Page 57 ® Printed Circuit Boards & Schematic Diagrams SORVALL Centrifuges Table 4-7. Component Description, Motor Control Printed Circuit Board, PN 78230 Revision 4 (refer to figure 4-16) Component Description Resistor, 130 Ω, 1/4W, 5%, Carbon Comp. Resistor, 270 Ω, 1/4W, 5%, Carbon Comp.

  • Page 58: Component Description, Motor Control Printed

    ® Printed Circuit Boards & Schematic Diagrams Table 4-7. Component Description, Motor Control Printed Circuit Board, PN 78230 Revision 4 (continued) (refer to figure 4-16) Component Description Capacitor, 0.47 µF, 50V Capacitor, 0.01 µF, 50V C3, C9 Capacitor, 0.1 µF, 50V C4, C10, C11, C12 Capacitor, 0.001 µF, 25V C5, C6, C7...
  • Page 59 ® Printed Circuit Boards & Schematic Diagrams Figure 4-17. Schematic for Motor Control Printed Circuit Board, PN 78230 Revision 4 4-39/4-40...
  • Page 60 ® Printed Circuit Boards & Schematic Diagrams Figure 4-18. Motor Control Printed Circuit Board Assembly, PN 78230 Revision 4 4-41...
  • Page 61 ® Printed Circuit Boards & Schematic Diagrams SORVALL Centrifuges Table 4-8. Component Description, Motor Control Printed Circuit Board, PN 78230 Revision 4 (refer to figure 4-18) Component Description Capacitor, 22 µF, 50V Capacitor, 0.47 µF, 50V Capacitor, 0.01 µF, 50V C3, C9 Capacitor, 0.1 µF, 50V...

  • Page 62: Component Description, Motor Control Printed

    ® Printed Circuit Boards & Schematic Diagrams Table 4-8. Component Description, Motor Control Printed Circuit Board, PN 78230 Revision 4 (continued) (refer to figure 4-18) Component Description Resistor, 40.2 ΚΩ, 1/4W, 1%, Carbon Film Resistor, 30 ΚΩ, 1/4W, 5%, Carbon Comp. Resistor, 1 ΚΩ, 1/4W, 5%, Carbon Comp.
  • Page 63 ® Printed Circuit Boards & Schematic Diagrams Figure 4-19. Schematic for Motor Control Printed Circuit Board, PN 78230 Revision 0 4-45/4-46...
  • Page 64 ® Printed Circuit Boards & Schematic Diagrams Figure 4-20. Motor Control Printed Circuit Board Assembly, PN 78230 Revision 0 4-47...
  • Page 65 ® Printed Circuit Boards & Schematic Diagrams SORVALL Centrifuges Table 4-9. Component Description, Motor Control Printed Circuit Board, PN 78230 Revision 0 (refer to figure 4-20) Component Description Capacitor, 22 µF, 50V Capacitor, 0.47 µF, 50V Capacitor, 0.01 µF, 50V C3, C9 Capacitor, 0.1 µF, 50V...

  • Page 66: Component Description, Motor Control Printed

    ® Printed Circuit Boards & Schematic Diagrams Table 4-9. Component Description, Motor Control Printed Circuit Board, PN 78230 Revision 0 (continued) (refer to figure 4-20) Component Description Resistor, 39 ΚΩ, 1/4W, 5%, Carbon Comp. Resistor, 2 ΜΩ, 1/4W, 5%, Carbon Comp. Resistor, 40.2 ΚΩ, 1/4W, 1%, Carbon Film Resistor, 30 ΚΩ, 1/4W, 5%, Carbon Comp.
  • Page 67 ® Table of Contents Contents Section 5. Repair and Replacement Figures Page 5-1. Latch Replacement ..........5-1 5-2.

  • Page 68: Section 5. Repair And Replacement

    ® Repair and Replacement Section 5: REPAIR and REPLACEMENT This section contains repair and replacement procedures for the TC6 ® Tabletop Centrifuge. If service beyond the scope of this manual is necessary, contact the nearest district office or local Field Service ®...

  • Page 69: Latch Adjustment

    3. Remove the motor cover and the chamber bowl with door gasket from the centrifuge. NOTE ® Early model TC6 Centrifuges had a ground wire con- nected to the underside of bowl. The ground wire is no longer required and should be permanently removed.
  • Page 70 ® Repair and Replacement 6. Position the new latch assembly on the latch/P.C. board panel and install, but do not tighten, the hardware removed in step 4. NOTE Do not loosen the two phillips head screws in center of latch assembly bracket – these screws secure the latching mechanism to the bracket, and must not be loosened.
  • Page 71 ® Repair and Replacement SORVALL Centrifuges d. Rotate the microswitch clockwise toward the latching W A R N I N G mechanism until the microswitch actuator lever is pressed DMM configuration of the against the mechanism's plastic portion and the DMM microswitch actuation is critical.

  • Page 72: Door Latched Microswitch Adjustment

    ® Repair and Replacement move the assembly up not more than 1 mm (0.04 inch). Re- tighten the hardware and go back to step 13 and proceed from there to see if using the DOOR switch releases the door: – If the latch is still unable to release the door, check for defective solenoid, DOOR switch, wiring, or Control P.C.

  • Page 73: Hinge Replacement

    ® Repair and Replacement SORVALL Centrifuges Make incremental adjustments as required, then tighten lower screw when adjustment is complete. 5-4. Hinge Replacement NOTE Hinges should be replaced one at a time so that the door height geometry is not disturbed.

  • Page 74: Door Closed Sensor Replacement

    ® Repair and Replacement 5-6. Door Closed Sensor Replacement NOTE Before you replace the door closed sensor, be sure it is functioning properly by following the procedure given in paragraph 5-5. Also, check the new sensor before installing. 1. Turn the centrifuge power OFF and unplug the power cord. 2.

  • Page 75: Fuse Replacement

    8. Reinstall the bezel, then plug in the centrifuge power cord. 5-7. Fuse Replacement The fuses are replaced by removing the fuse block located in the power connector on the back of the TC6 ® (see figure 5-3). To replace the fuses: 1.
  • Page 76 5-8. Voltage Selection (SN 9501733 and Below) The voltage is set by the voltage selector (in the fuse block) located in the power connector on the back of the TC6 ® (refer to figure 5-4). The current voltage setting (100, 110*, 220, 230, or 240) is displayed in the window of the fuse block.

  • Page 77: Precautions For Handling Of Printed Circuit Boards

    ® Repair and Replacement SORVALL Centrifuges 2. Squeeze the two tabs located on either side of the fuse block and carefully remove the fuse block from the power connector. 3. Gently pull the voltage selector from the fuse block. 4. Rotate the voltage selector until the desired voltage* is aligned with the window in the fuse block.

  • Page 78: Printed Circuit Board Replacement

    3. Remove the motor cover and the chamber bowl with door gasket from the centrifuge. NOTE ® Early model TC6 Centrifuges had a ground wire con- nected to the underside of bowl. The ground wire is no longer required and should be permanently removed.

  • Page 79: Fan And Grille Replacement

    ® Repair and Replacement SORVALL Centrifuges 6. Disconnect P20 from the Motor Controls P.C. Board. Then, remove the wire harness from the plastic cable connector (located to the left of the Motor Controls P.C. Board). Carefully remove the motor (with the motor mounting plate) from the centrifuge.
  • Page 80 Repair and Replacement 3. Remove the motor cover and the chamber bowl with door gasket from the centrifuge (see figure 5-1). NOTE Early model TC6 ® Centrifuges had a ground wire connected to the underside of bowl. The ground wire is no longer required and should be permanently removed.
  • Page 81 ® Repair and Replacement SORVALL Centrifuges b. Remove and discard the damaged grille. c. Install new grille, reinstall fan, and reassemble the centri- fuge reversing steps 1 through 8 (refer to figure 5-5). Figure 5-5. Reinstalling the Cabinet 5-14...

  • Page 82: Power Connector Replacement

    3. Remove the motor cover and the chamber bowl with door gasket from the centrifuge. NOTE ® Early model TC6 Centrifuges had a ground wire con- nected to the underside of bowl. The ground wire is no longer required and should be permanently removed.

  • Page 83: Speed Potentiometer Replacement

    ® Repair and Replacement SORVALL Centrifuges 11. Remove the defective power connector. Then, remove the fuse block and fuses from the defective power connector and install into the new power connector assembly (PN 78028, SN 9600946, 60 Hz and above).
  • Page 84 ® Repair and Replacement 8. Reinstall the front bezel securing it in place with the hardware removed in step 4. 9. Turn the shaft of the potentiometer to zero (fully counterclockwise). 10. Open the chamber door and install a rotor with a full comple- ment of buckets (4 each).
  • Page 85 ® Table of Contents SORVALL Centrifuges Contents Section 6. Troubleshooting Table Page 6-1. ® Troubleshooting Chart ........6-1...

  • Page 86: Section 6. Troubleshooting

    ® Troubleshooting Section 6: TROUBLESHOOTING This section describes mechanical and electrical malfunctions that may occur in the TC6 ® Tabletop Centrifuge. Table 6-1, Troubleshooting Chart, may be used with the schematics and wiring diagrams provided to locate problem areas. W A R N I N G...
  • Page 87 ® Troubleshooting SORVALL Centrifuges ® Table 6-1. TC6 Troubleshooting Chart (continued) Problem Probable Cause Solution 9. 5 Vdc on display is greater 9. Display Printed Circuit Board AC to centrifuge, but no dis- than 8 Vdc. destroyed. Replace board. play. (continued) 10.
  • Page 88 ® Troubleshooting ® Table 6-1. TC6 Troubleshooting Chart (continued) Problem Probable Cause Solution Timer does not function cor- rectly. (continued) 2. Loss of bit count. Defective Display Printed Circuit Board. 2. Replace the Display Printed 2. Cannot set timer. Circuit Board.
  • Page 89 ® Troubleshooting SORVALL Centrifuges ® Table 6-1. TC6 Troubleshooting Chart (continued) Problem Probable Cause Solution 5. Replace DOOR switch. Door will not open at end of 6. Loss of bit in timing string. run. (continued) 6. Replace Control Printed Circuit Board.
  • Page 90 ® Troubleshooting ® Table 6-1. TC6 Troubleshooting Chart (continued) Problem Probable Cause Solution Rotor will not reach top speed. 1. Replace Control Printed Circuit Board. Rotor exceeds set speed. 2. Shorted RUN command on Control Printed Circuit Board. 2. Replace Control Printed Circuit Board.
  • Page 91 ® Troubleshooting SORVALL Centrifuges ® Table 6-1. TC6 Troubleshooting Chart (continued) Problem Probable Cause Solution 1. a. Check rotor for balanced load. Centrifuge vibrates when run- b. Make sure all buckets are ning. properly placed. c. Clean rotor pins/buckets. 1. Faulty motor bearings.
  • Page 92 ® Table of Contents Contents Section 7. Maintenance Page 7-1. Routine Maintenance ..........7-1 7-2.

  • Page 93: Section 7. Maintenance

    ® Maintenance Section 7: MAINTENANCE This section contains procedures for the maintenance of the TC6 ® Tabletop Centrifuge. W A R N I N G Because of the high voltages in the centrifuge, untrained personnel must not attempt to test or repair any electrical circuits.
  • Page 94 If a rotor shows signs of wear or corro- sion, remove it from use and contact your local Field Service ® Engineer for SORVALL products to have it inspected. 3. Drive Spindle Before each run, wipe the spindle with a soft cloth before a rotor is installed to reduce the chance of the rotor sticking to the spindle.
  • Page 95 ® Maintenance 7-2. Preventive Maintenance W A R N I N G The preventive maintenance checks of the centrifuge and rotors are performed on service visits as specified by a service contract. In If the centrifuge has been cases where no service contract exists, the preventive maintenance used with radioactive or pathogenic procedures must be performed by qualified service personnel samples, it may be contaminated.
  • Page 96 ® Maintenance SORVALL Centrifuges c. Prerun Checks 1. Door a. With the door open, the centrifuge should not start. b. With the door down but not latched, the centrifuge should not start. c. Place four pieces of paper equally spaced around the top of the open rotor chamber door.
  • Page 97 ® Maintenance d. Electronic Checks 1. Set the POWER switch to "l". 2. Press the DOOR switch to open the chamber door. Install the H-400 Rotor with four full buckets onto the drive spindle. 3. Set the run parameters: SPEED dial and TIME dial, to the desired settings for a normal run application.

  • Page 98: Preventive Maintenance

    Preventive Maintenance & ® Calibration Certification Page 1 of 1 Preventive Maintenance and Repair and Calibration B ONLY A & B Calibration Certification Recertification Instrument Model: Work Date: Serial Number: Report Number: A. Preventive Maintenance Pre-Run Checks - continued Door open test Door down/not latched Preliminary Checks Proper cleaning...
  • Page 99 8-1. Parts: TC6 Main Assembly ........8-3 8-2.
  • Page 100 ® Illustrated Parts Section 8: ILLUSTRATED PARTS This section contains illustrations and tables identifying the replaceable parts of the TC6 ® Tabletop Centrifuge. The illustrations indicate replaceable parts using item numbers which are keyed to accompanying tables. The tables, by item number, list the part number and description of each replaceable part.
  • Page 101 ® Illustrated Parts SORVALL Centrifuges ® Figure 8-1. TC6 Main Assembly...
  • Page 102 TC6    Illustrated Parts Table 8-1. Parts: TC6    Main Assembly (keyed to figure 8-1) Item Part Description Number* Number Bezel 78306 - Overlay 78145 Cabinet Assembly (requires the following seven items) 78240 Label, Rotation Arrow 62541 Label, Warning –...
  • Page 103 ® Illustrated Parts SORVALL Centrifuges ® Figure 8-2. TC6 Chassis Assembly...
  • Page 104 TC6    Illustrated Parts Tables 8-2. Parts: TC6    Chassis Assembly (keyed to Figure 8-2) Item Part Number* Description Number Display Printed Circuit Board Assembly 78178 Control Printed Circuit Board Assembly 78189 Power Supply Printed Circuit Board Assembly...
  • Page 105 NOTES...
  • Page 106 NOTES...
  • Page 107 NOTES...
  • Page 108 NOTES...
  • Page 109 FAX: (203) 270-2166 1-800-522-SPIN. (203) 270-2210 (1-800-522-7746) For Applications Information, or for Technical or Service Information, contact either: The SORVALL APPLICATIONS LAB, or SORVALL SERVICE & SUPPORT 31 Pecks Lane Newtown, CT 06470-2337 FAX: (203) 270-2115 UNITED KINGDOM: FRANCE: Other countries, including...

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