Sorvall TC6 Service Manual Download Page 90

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TC6

Troubleshooting

6-5

Table 6-1. TC6

Troubleshooting Chart (continued)

Problem

Probable Cause

Solution

2. Shorted RUN command on

Control Printed Circuit Board.

3. Loss of bit in timing string.

4. Loss of tach signal.

5. Shorted RUN command on

Motor Control Printed Circuit
Board.

6. Speed control stuck at maxi-

mum.

7. Loss of tach input.

1. Output transistor problem on

Motor Control Printed Circuit
Board.

1. START switch stuck ON.

2. STOP switch stuck OFF.

3. Shorted RUN command line.

4. Speed Control stuck at maxi-

mum.

1. Rotor/load out of balance.

1. Replace Control Printed

Circuit Board.

2. Replace Control Printed

Circuit Board.

3. Replace Control Printed

Circuit Board.

4. a. Replace Control Printed

Circuit Board.

b. Replace Motor Control

Printed Circuit Board.

c. Replace motor.

5. Replace Motor Control

Printed Circuit Board.

6. Replace Motor Control

Printed Circuit Board.

7. Replace the Motor Control

Printed Circuit Board.

1. Replace the Motor Control

Printed Circuit Board.

1. Replace switch.

2. Replace switch.

3. a. Defective Motor Control

Printed Circuit Board. Re-
place board.

b. Defective Control Printed

Circuit Board. Replace
board.

4. a. Defective Motor Control

Printed Circuit Board.
Replace board.

b. Defective Control Printed

Circuit Board. Replace
board.

Rotor will not reach top speed.

Rotor exceeds set speed.

Rotor speed erratic.

Unable to stop rotor.

Summary of Contents for TC6

Page 1: ...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 a...

Page 2: ...Sorvall Products L P Newtown Connecticut U S A PN 78006 1 Issued August 1996 OPERATING INSTRUCTIONS SORVALL TC6 Tabletop Centrifuge ...

Page 3: ...o have been trained by Du Pont Due to the high electrical potential in this centrifuge untrained individuals must not attempt any of the procedures in this service manual WARNINGS CAUTIONS and NOTES within the text of this manual are used to emphasize important and critical instructions WARNING A Warning informs the operator of a hazard or an unsafe practice that could result in personal injury af...

Page 4: ... 1 Inspection 2 1 2 2 Preinstallation Requirements 2 1 2 3 Electrical Requirements 2 2 2 4 Voltage Selection 2 2 2 5 Installation 2 4 2 6 Rotor Considerations 2 4 2 7 Running Hazardous Material 2 5 2 8 Operation 2 6 2 9 Emergency Sample Recovery 2 7 Installation Checklist Section 3 SYSTEM DESCRIPTIONS 3 1 General System Description 3 1 3 2 Power System 3 2 3 3 Drive Motor 3 2 3 4 Brushless Motor D...

Page 5: ...6 Door Closed Sensor Replacement 5 6 5 7 Fuse Replacement 5 8 5 8 Precautions for Handling of Printed Circuit Boards 5 9 5 9 Printed Circuit Board Replacement 5 9 5 10 Motor Replacement 5 10 5 11 Fan and Grille Replacement 5 11 5 12 Power Connector Replacement 5 13 5 13 Speed Potentiometer Replacement 5 15 Section 6 TROUBLESHOOTING Section 7 MAINTENANCE 7 1 Routine Maintenance 7 1 7 2 Preventive M...

Page 6: ...ting Chart 6 1 8 1 Parts TC6 Main Assembly 8 3 8 2 Parts TC6 Chassis Assembly 8 5 List of Illustrations Figure Page 1 1 TC6 Controls and Indicators 1 5 2 1 Voltage Selection SN 9501733 and below 2 3 2 2 Location of Mechanical Override 2 7 4 1 System Wiring Diagram Rev 3 4 3 4 2 System Wiring Diagram Rev 2 4 5 4 3 Schematic for Control Printed Circuit Board PN 78189 Rev 3 4 7 4 4 Control Printed Ci...

Page 7: ...Schematic for Motor Control Printed Circuit Board PN 78230 Rev 4 4 39 4 18 Motor Control Printed Circuit Board Assembly PN 78230 Rev 4 4 41 4 19 Schematic for Motor Control Printed Circuit Board PN 78230 Rev 0 4 45 4 20 Motor Control Printed Circuit Board Assembly PN 78230 Rev 0 4 47 5 1 Latch Assembly 5 2 5 2 Door Closed Sensor Parts Location 5 7 5 3 Fuse Replacement 5 9 5 4 Fuse Replacement Volt...

Page 8: ...n 1 Introduction and Description Page 1 1 Intended Use of Manual 1 1 1 2 Service Decontamination Policy 1 1 1 3 Warranty Responsibility 1 3 1 4 Centrifuge Description 1 4 1 5 Specifications 1 4 1 6 Controls Displays Switches and Indicators 1 5 ...

Page 9: ...ed of all encrusted material and decontaminate it prior to servicing by the Sorvall representative or returning it to the Sorvall facility There must be no radioactivity detectable by survey equipment The SORVALL Rotors Tubes Bottles Adapters and Accesso ries Catalog contains descriptions of commonly used decon tamination methods and a chart showing method compatibility with various materials This...

Page 10: ... 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 2 Send item s with the RSO No clearly marked on the outside packaging to the address obtained from your Sorvall represen tative NOTE United States federal regulations require that parts and centrifuges must be decontaminated before ...

Page 11: ...strument resulting from normal wear and tear misuse abuse use of electri cal currents or circuits other than those specified on the plate affixed to the instrument or use of any rotor other than those intended for use in this instrument Sorvall reserves the right to change alter modify or improve any of its instruments without any obligation whatsoever to make corre sponding changes to any instrum...

Page 12: ...losed and an interlock prevents the chamber door from being opened during operation 1 5 Specifications Maximum Operating Speed 6000 rpm Maximum heat output during operation 650 Btu hour 190 Watts Electrical Requirements 100 120 Vac 60Hz 3 15A single phase 220 240 Vac 50 Hz 2A single phase Dimensions Width 39 4 cm 15 5 inches Depth 55 9 cm 22 0 inches Height 26 7 cm 10 5 inches Height with door ope...

Page 13: ...ays actual rotor speed from 0 to 6000 rpm 1 or 10 rpm whichever is greater DOOR INDICATOR Blinks at end of run indi cating the chamber door may be opened TIME DISPLAY Displays set run time and during a run remaining run time READY INDICATOR When lit indicates that the chamber door is closed and latched and that the centri fuge is ready for operation DOOR SWITCH Opens the cham ber door STOP SWITCH ...

Page 14: ...nd of the run this light blinks indicating that the rotor has stopped spinning and that the chamber door may be opened SPEED dial Sets the desired rotor speed in rpm As indicated by the symbol turn the dial to the right to increase speed TIME dial Sets length of run time up to 99 min utes HOLD switch Selects a continuous run two dashes will appear in the TIME display to indicate a run in HOLD mode...

Page 15: ...ion Requirements 2 1 2 3 Electrical Requirements 2 2 2 4 Voltage Selection 2 2 2 5 Installation 2 4 2 6 Rotor Considerations 2 5 2 7 Running Hazardous Material 2 6 2 8 Operation 2 7 2 9 Emergency Sample Recovery 2 8 Installation Checklist Contents Section 2 Installation and Operation ...

Page 16: ...mage If you find damage report it immediately to the transportation company and file a damage claim then notify Sorvall Check the parts received with the centrifuge against the shipping list if any parts are missing contact Sorvall see office list in back of manual 2 2 Preinstallation Require ments The TC6 centrifuge is ordered for a specific voltage The nameplate on the back of the centrifuge tel...

Page 17: ...y have to be replaced Follow local electrical regulations Check that the gound lug of the electrical plug is properly grounded and is shorted to the frame of the centrifuge 2 4 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 2 1 for SN 9501733 and below The current voltage sett...

Page 18: ...ending on the voltage selected 100 or 110 setting requires two 3 15 amp fuses PN 91428 220 or 240 setting requires two 2 amp fuses PN 91203 Change fuses if necessary 6 Reinstall the fuse block into the power connector and plug in the centrifuge power cord NOTE If the voltage was changed from 100 110 setting to 220 240 setting a different power cord is required C A U T I O N When changing the volta...

Page 19: ...e of nicks and scratches Wipe these surfaces before each use Gently place the rotor body on the tapered spindle of the centrifuge aligning the shaft pin with the slots in the rotor Secure the rotor to the drive spindle by turning the rotor locking knob clockwise C A U T I O N Do not lift the centrifuge by the front panel or the chamber door To do so can result in damage to these parts If the power...

Page 20: ...Use appropriate decontamination procedures should exposure to any hazardous material occur Read paragraph 1 2 page 1 1 for the procedure to follow if a centrifuge or rotor that has been used with a hazardous material must be returned to our service facilities for repair C A U T I O N Do not operate the centri fuge without making sure the rotor is properly balanced Also when install ing a rotor car...

Page 21: ... READY indicator light will not come on and the rotor will not spin when the START switch is pressed To end a run before the selected run time has elapsed or to end a run set to HOLD press the STOP switch 7 At the end of the run the DOOR indicator light blinks indicating that the chamber door can be opened Press the DOOR switch to open the chamber door Remove the sample from the rotor close the ch...

Page 22: ...arefully move the key left to right until you locate the solenoid shaft Slowly move the end of the key downward to contact the washer located at the bottom of the shaft With the key pressed tight against the solenoid shaft use the key as a lever to apply downward pressure on the washer to release the chamber door W A R N I N G This procedure is included for emergency sample recovery only and shoul...

Page 23: ...____________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ _______...

Page 24: ...age 3 1 General System Description 3 1 3 2 Power System 3 2 3 3 Drive Motor 3 2 3 4 Brushless Motor Drive Electronics 3 2 3 5 Speed Control 3 6 3 6 Timer 3 7 3 7 Door Latching Mechanism 3 7 Contents Section 3 System Descriptions ...

Page 25: ...re located on printed circuit boards to control operation of the motor speed the timer and the latch mechanism The Input Output System is a user interface system that consists of knobs switches and displays It allows the user to input run parameters and also monitors a run in progress The Cabinet System consists of the upper and lower frame sections This system forms the main body of the centrifug...

Page 26: ...lator are heatsinked to the chassis The 30 volt supply is used by the motor control circuitry the motor and the latch release solenoid The 5 volt supply is for powering the dis plays speed and timer logic and the operator I O logic 3 3 Drive Motor Theory of Operation The motor is a brushless dc type Four Ferrite magnets are adhesive bonded to the steel shaft to make up the rotor Arranged around th...

Page 27: ...and decodes rotor position information This information is used to sequentially apply power from the output bridge to the motor It is not sufficient to precisely control the motor through commutation alone The power applied to the motor must be carefully metered in order to throttle both torque and speed This is accomplished through a technique called pulse width modulation or PWM The PWM techniqu...

Page 28: ...mon method of overcurrent detection is to tie the sources of the lower three transistors together and return them to the negative supply rail through a current sense resistor The sense voltage which is proportional to load current is delivered into a comparator on board the MC33035 The comparator then delivers an RS flip flop which ensures that the output drivers will turn off the power transistor...

Page 29: ...net on the rotor has two pairs of poles Therefore for every mechanical revolution each Hall effect sensor delivers two pulses and the three sensors generate six pulses The MC33039 generates 12 pulses for each revolution one for each rising and falling edge For a given maximum rotor speed the output pulse width has a maximum limit For example the maximum speed is 6000 rpm which is 100 r evolutions ...

Page 30: ...eed the duty cycle de creases However if the input signal abruptly demands a much lower speed the duty cycle could fall to zero and the motor would coast to desired low speed Therefore since the MC33035 has no provision to dynamically brake the motor and thus control rapid deceleration it is best suited for applications which have a large frictional load or those that do not require a controlled a...

Page 31: ...uge continues to run until the operator presses the STOP switch to end the run 3 7 Door Latching Mechanism Theory of Operation The door closing locking mechanism is a latch secured to the underside of the frame a striker secured to and extending through the chamber door a latch release activated by a solenoid a door closure sensor and a door release button Door open close position is monitored by ...

Page 32: ...8049 Rev 1 4 31 4 15 Schematic for Motor Control Printed Circuit Board PN 78230 Rev 4 4 33 4 16 Motor Control Printed Circuit Board Assembly PN 78230 Rev 4 4 35 4 17 Schematic for Motor Control Printed Circuit Board PN 78230 Rev 4 4 39 4 18 Motor Control Printed Circuit Board Assembly PN 78230 Rev 4 4 41 4 19 Schematic for Motor Control Printed Circuit Board PN 78230 Rev 0 4 45 4 20 Motor Control ...

Page 33: ...ams 4 1 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 Section 4 PRINTED CIRCUIT BOARDS and SCHEMATIC DIAGRAMS 4 1 4 2 ...

Page 34: ...TC6 Printed Circuit Boards Schematic Diagrams 4 3 4 4 Figure 4 1 System Wiring Diagram SN 9501734 and above SN 9600946 and above 60 Hz only Do Not Use Line Filter ...

Page 35: ...TC6 Printed Circuit Boards Schematic Diagrams 4 5 4 6 Figure 4 2 System Wiring Diagram SN 9501733 and below ...

Page 36: ...TC6 Printed Circuit Boards Schematic Diagrams 4 7 4 8 Figure 4 3 Schematic for Control Printed Circuit Board PN 78189 Revision 3 ...

Page 37: ...TC6 Printed Circuit Boards Schematic Diagrams 4 9 4 10 Figure 4 4 Control Printed Circuit Board Assembly PN 78189 Revision 3 ...

Page 38: ...omp R14 R17 R22 Resistor 3 3 KΩ 1W 5 Carbon Comp R19 R21 Resistor 4 7 KΩ 1 4W 5 Carbon Comp R4 R7 Resistor 47 KΩ 1 4W 5 Carbon Comp R1 Resistor 75Ω 15W 5 Carbon Comp C5 C7 C9 C13 Capacitor 0 01 µF 50V C14 C15 C16 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C32 C33 C34 C35 C6 C8 Capacitor 0 1 µF 50V 20 C4 C11 C36 Capacitor 2 2 µF 50V 20 C2 C10 C12 Capacitor 47 µF 16V 20 U13 U14 U15 I C CMOS...

Page 39: ...ltivibrator MC74HC4538N U16 I C CMOS Opto Isolator H11A1 U17 I C CMOS Hex Inverter CD4069UBE Q1 Transistor Power N Channel E FET Q2 I C Undervolt Sensing MC34064P 5 Q3 Transistor NPN Type 2N2222 Y1 Resonator Ceramic 2MHz K1 Relay PCB Type SPDT CR1 CR2 CR3 CR4 Diode Zener IN6270A 9 1V CR5 CR6 Diode Silicon 100V 1A IN4002 IN4002GP CR7 Diode Surge Type 600W J30 Connector Header 26 Position J31 Connec...

Page 40: ...TC6 Printed Circuit Boards Schematic Diagrams Figure 4 5 Schematic for Display Printed Circuit Board PN 78178 Revision 4 4 13 4 14 ...

Page 41: ...TC6 Printed Circuit Boards Schematic Diagrams Figure 4 6 Display Printed Circuit Board Assembly PN 78178 Revision 4 4 15 4 16 ...

Page 42: ...4 C15 C12 Capacitor 47 µF 6V DS1 DS2 LED Green Diffused CR1 CR2 Diode SI IN914 or IN4148 CR3 CR4 U5 I C CMOS Octal Bus Transceiver 74HC245AN U10 U13 I C CMOS BCD Decoder Driver Harris CA3161E U7 I C CMOS Dual Multivibrator 74HC4538N U6 I C CMOS Quad NAND 74HC132AN U9 I C CMOS Quad or 2 Input 74HC32AN U1 U2 I C CMOS BCD Counter MC14510BP U3 U4 U8 I C CMOS Schmitt Trigger MC14106BCP U11 U12 U15 I C ...

Page 43: ...TC6 Printed Circuit Boards Schematic Diagrams Figure 4 7 Schematic for Display Printed Circuit Board PN 78178 Revision 2 4 19 4 20 ...

Page 44: ...TC6 Printed Circuit Boards Schematic Diagrams Figure 4 8 Display Printed Circuit Board Assembly PN 78178 Revision 2 4 21 4 22 ...

Page 45: ...CR4 DS1 DS2 LED Green Diffused R1 R2 Resistor 4 7 KΩ 1 4W 5 Carbon Comp R3 R4 R5 Resistor 82 Ω 1 4W 5 Carbon Comp U1 U2 I C CMOS BCD Counter MC14510BP U3 U4 U5 I C CMOS Octal Bustransceiver 74HC245AN U6 I C CMOS Quad NAND 74HC132AN U7 I C CMOS Dual Multivibrator 74HC4538N U8 I C CMOS Schmitt Trigger MC14106BCP U9 I C CMOS Quad or 2 Input 74HC32AN U10 U13 I C CMOS BCD Decoder Driver Harris CA3161E ...

Page 46: ...Printed Circuit Boards Schematic Diagrams SORVALL Centrifuges 4 24 Figure 4 9 Schematic for Power Supply Printed Circuit Board PN 78049 Revision 4 ...

Page 47: ...TC6 Printed Circuit Boards Schematic Diagrams 4 25 Figure 4 10 Power Supply Printed Circuit Board Assembly PN 78049 Revision 4 ...

Page 48: ...0V C4 Capacitor 6800 µF 16V C1 C2 Capacitor 8200 µF 50V CR3 Diode SI 100V 1A IN4002 IN4002GP CR2 Rectifier Bridge 100V 4A KBU4B CR1 Rectifier Bridge 100V 1W KBPC2501 W VR1 Regulator Pos 5V 3 Term LM340T 5 0 J11 Connector Header 12 Position J10 Connector Header 6 Position F1 Fuse 6 3A 250V Littlefuse 21706 3 F2 Fuse 1 6A 250 V Littlefuse 21701 6 Z2 Limiter Current Inrush 10 Ohm 25 C Keystone CL 110...

Page 49: ...TC6 Printed Circuit Boards Schematic Diagrams 4 27 Figure 4 11 Schematic for Power Supply Printed Circuit Board PN 78049 Revision 2 ...

Page 50: ...Printed Circuit Boards Schematic Diagrams SORVALL Centrifuges 4 28 Figure 4 12 Power Supply Printed Circuit Board PN 78049 Revision 2 ...

Page 51: ...6V Aluminum CR1 Rectifier Bridge 100V 1W CR2 Rectifier Bridge 100V 4A CR3 Diode Silicon 100V 1A IN4002 or IN4002GP F1 Fuse 6 3A 250V Fast Acting 5 x 20 mm Sorvall PN 91398 Little PN 21706 3 F2 Fuse 1 6A 250V Fast Acting 5 x 20 mm Sorvall PN 91397 Little PN 21701 6 J10 Connector Header 6 Position J11 Connector Header 12 Position R1 Resistor 1000 Ω 5W 5 Wirewound VR1 Regulator Positive 5V 3 Terminal...

Page 52: ...Printed Circuit Boards Schematic Diagrams SORVALL Centrifuges 4 30 Figure 4 13 Schematic for Power Supply Printed Circuit Board PN 78049 Revision 1 ...

Page 53: ...TC6 Printed Circuit Boards Schematic Diagrams 4 31 Figure 4 14 Power Supply Printed Circuit Board Assembly PN 78049 Revision 1 ...

Page 54: ...itor 8200 µF 50V Aluminum C3 Capacitor 100 µF 10V Aluminum C4 Capacitor 4600 µF 16V Aluminum CR1 Rectifier Bridge 100V 1W CR2 Rectifier Bridge 100V 4A CR3 Diode Silicon 100V 1A IN4002 or IN4002GP F1 Fuse 10A 250V Slow Blow Axial F2 Fuse 2A 250V Fast Acting Axial J10 Connector Header 6 Position J11 Connector Header 12 Position R1 Resistor 1000 Ω 5W 5 Wirewound VR1 Regulator Positive 5V 3 Terminal L...

Page 55: ...TC6 Printed Circuit Boards Schematic Diagrams 4 33 4 34 Figure 4 15 Schematic for Motor Control Printed Circuit Board Assembly PN 78230 Revision 4 ...

Page 56: ...TC6 Printed Circuit Boards Schematic Diagrams 4 35 Figure 4 16 Motor Control Printed Circuit Board Assembly PN 78230 Revision 4 ...

Page 57: ...n Film R7 Resistor 39 ΚΩ 1 4W 5 Carbon Comp R8 Resistor 2 MΩ 1 4W 5 Carbon Comp R9 Resistor 40 2 KΩ 1 4W 1 Carbon Film R10 Resistor 30 KΩ 1 4W 5 Carbon Comp R11 R26 Resistor 1000 Ω 1 4W 5 Carbon Comp R13 R15 R17 Resistor 470 Ω 1 4W 5 Carbon Comp R23 R24 R25 R12 R14 R16 Resistor 2200 Ω 1 4W 5 Carbon Comp R18 R19 R20 R21 Resistor 1800 Ω 1 4W 5 Carbon Comp R22 Resistor 0 05 KΩ 5W 5 Wirewound CR1 CR2 ...

Page 58: ... C9 Capacitor 0 01 µF 50V C4 C10 C11 C12 Capacitor 0 1 µF 50V C5 C6 C7 Capacitor 0 001 µF 25V C8 Capacitor 0 022 µF 25V U1 I C Brushless DC Motor Controller MC33035P U2 I C Closed Loop Brushless Motor Adapter MC33039P U3 I C Photo Coupler Multichannel NEC PS 2501 3 Heatsink Mounting Plate Aluminum Anodized 375 Thick J20 Connector 8 Position J21 Connector 4 Position J22 Connector 10 Position F1 Fus...

Page 59: ...TC6 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: ...TC6 Printed Circuit Boards Schematic Diagrams 4 41 Figure 4 18 Motor Control Printed Circuit Board Assembly PN 78230 Revision 4 ...

Page 61: ...itor 0 022 µF 25V CR1 CR2 CR3 Diode Rectifier IN5819 40V 1A J20 Connector 8 Position J21 Connector 4 Position J22 Connector 10 Position Q1 Transistor NPN Type 2N2222A Q2 Q4 Q6 Transistor Power Mosfet P Channel Q3 Q5 Q7 Transistor Power Mosfet N Channel R1 Resistor 130 Ω 1 4W 5 Carbon Comp R2 Resistor 270 Ω 1 4W 5 Carbon Comp R3 Resistor 3 6 ΚΩ 1 4W 5 Carbon Comp R4 Resistor 9 53 KΩ 1 4W 1 Carbon F...

Page 62: ...11 R26 Resistor 1 ΚΩ 1 4W 5 Carbon Comp R12 R14 R16 Resistor 2 2 ΚΩ 1 4W 5 Carbon Comp R13 R15 R17 Resistor 470 Ω 1 4W 5 Carbon Comp R23 R24 R25 R18 Resistor 1 8 ΚΩ 1 4W 5 Carbon Comp R19 R20 R21 Resistor 1 8 ΚΩ 1 4W 5 Carbon Comp R22 Resistor 0 05 Ω 1 4W 5 Wirewound U1 I C Brushless DC Motor Contoller MC33035P U2 I C Closed Loop Brushless Motor Adapter U3 I C Photocoupler Multi channel VR1 Regula...

Page 63: ...TC6 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: ...TC6 Printed Circuit Boards Schematic Diagrams 4 47 Figure 4 20 Motor Control Printed Circuit Board Assembly PN 78230 Revision 0 ...

Page 65: ...22 µF 25V CR1 CR2 CR3 Diode Rectifier IN5819 40V 1A IC1 I C Brushless DC Motor Contoller MC33035P IC2 I C Closed Loop Brushless Motor Adapter J20 Connector 8 Position J21 Connector 4 Position J22 Connector 12 Position Q1 Transistor NPN Type 2N2222A Q2 Q4 Q6 Transistor Power Mosfet P Channel Q3 Q5 Q7 Transistor Power Mosfet N Channel R1 Resistor 130 Ω 1 4W 5 Carbon Comp R2 Resistor 270 Ω 1 4W 5 Car...

Page 66: ... Carbon Comp R8 Resistor 2 ΜΩ 1 4W 5 Carbon Comp R9 Resistor 40 2 ΚΩ 1 4W 1 Carbon Film R10 Resistor 30 ΚΩ 1 4W 5 Carbon Comp R11 R12 R14 Resistor 1 ΚΩ 1 4W 5 Carbon Comp R16 R13 R15 R17 Resistor 470 Ω 1 4W 5 Carbon Comp R23 R24 R25 R18 Resistor 1 8 ΚΩ 1 4W 5 Carbon Comp R19 R20 R21 Resistor 820 Ω 1 4W 5 Carbon Comp R22 Resistor 0 05 Ω 1 4W 5 Wirewound VR1 Regulator Variable LM317 Heatsink Mountin...

Page 67: ...ent 5 6 5 5 Door Closed Sensor Check 5 6 5 6 Door Closed Sensor Replacement 5 7 5 7 Fuse Replacement 5 8 5 8 Voltage Selection 5 9 5 9 Precautions for Handling of Printed Circuit Boards 5 10 5 10 Printed Circuit Board Replacement 5 11 5 11 Motor Replacement 5 11 5 12 Fan and Grille Replacement 5 12 5 13 Power Connector Replacement 5 15 5 14 Speed Potentiometer Replacement 5 16 Figures ...

Page 68: ...hardware for reassembly unless otherwise advised 1 Open chamber door 2 Turn centrifuge power off and unplug power cord 3 Remove the two phillips screws located on each side of the bezel Carefully lift the bezel up to disengage it from the frame but do not disconnect 4 The latch assembly is installed on the Latch P C Board panel using mounting hardware two nuts at the top of the bracket and two phi...

Page 69: ...rly 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 4 Remove two phillips head screws securing the bottom of the latch assembly bracket to the latch P C board panel then re move the two nuts securing the top of the bracket Refer to figure 5 1 5 Disconnect P231 then remove and discard the latch assem...

Page 70: ...embly mounting hardware 10 Pull down on the latch solenoid shaft to manually release the door If the latch does not release readjust the latch assembly adjust the door striker or if the door is not parallel to the cabinet reset the door hinges If the latch is still unable to release the door loosen the four nuts that secure the latch P C board panel to the frame and reset the lateral adjustment of...

Page 71: ...paper each should be held securely and create a frictional drag as it is pulled out If not use a 10 mm spacer to check gap and reset latch or hinges as required Repeat paper test if appropriate If the latch or hinges had to be adjusted check to make sure that pulling down on the latch solenoid shaft still releases the door 13 Set the control panel bezel in position on the centrifuge but do not ins...

Page 72: ...he COM and the N O tabs on the microswitch and set DMM for ohms With the door in the latched position the DMM should register a value with the door open the DMM should indicate open c If the microswitch fails either check manually operate the microswitch lever d Replace microswitch if it fails the check 5 With DMM connected as in step 4 adjust microswitch a Set the microswitch mounting screws so t...

Page 73: ... Open chamber door and reinstall the screw removed in step 2 9 Close and latch chamber door and check distance as in step 5 If distance is not the same as that recorded loosen the four cabinet screws to precisely adjust Retighten screws 10 Repeat procedure for other hinge 5 5 Door Closed Sensor Check 1 Check that the door magnet is in place If not install one 2 Make sure the closed door sensor is ...

Page 74: ...efully lift the bezel up to disengage it from the frame but do not disconnect wiring and gently place the bezel so that the p c boards are facing up 3 Disconnect P J 331 refer to figure 5 2 Loosen the back up nut Then while holding the back up nut remove and discard the old door closed sensor threading it out through the bottom of the bracket 4 Open chamber door Remove the sensor cover plug from t...

Page 75: ... the end of the sensor wires into the connec tor body P331 supplied Pins should click into place and not pull out d Reinstall the sensor plug cover 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 Unplug the power cord from t...

Page 76: ...9501734 and above 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 To change the voltage 1 Unplug the power cord from the wall receptacle and from the power connector Figure 5...

Page 77: ...stic packaging material such as Velostat by 3M Company whenever the board is to be shipped or stored 2 Always handle the printed circuit board by its corners only 3 Cover all connectors with conductive plastic whenever a printed circuit board is out of the centrifuge 4 You must be grounded when handling printed circuit boards especially if working in a carpeted area Use of an electrostatic dischar...

Page 78: ...ctors 6 Reinstall the bezel securing it in place with the screws removed in step 2 5 11 Motor Replacement NOTE Retain all hardware for reassembly unless otherwise advised 1 Open chamber door 2 Turn centrifuge power off and unplug power cord 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 undersi...

Page 79: ...ing plate assembly to the frame be sure to place a split lockwasher PN 91180 onto each of the three motor studs and split lockwasher PN 91312 onto the motor stud 9 Position the motor motor mounting plate assembly onto the shock mounts with the motor wires facing toward the front of the centrifuge 10 Apply a few drops of Loctite 222 or Loctite 242 to the three motor mounting studs Secure in place u...

Page 80: ...osen 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 8 Gently push the cabinet frame back to disengage it from the baseplate flanges refer to figure 5 4 If necessary use a rubber mallet to loosen the cabinet from the flanges Then lift the cabinet with lid off of the frame To replace the fan a Using ...

Page 81: ...ment SORVALL Centrifuges 5 14 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 ...

Page 82: ... corners of the frame base 6 Disconnect the door closed sensor NOTE It may be necessary to loosen the latch assembly 7 Using a 7 mm socket wrench loosen the two nuts washers and lockwashers from the front of the latch assembly Then loosen the two bottom phillips screws this will allow proper clear ance for the latch assembly Do not loosen the two phillips head screws in center of latch assembly br...

Page 83: ...eplate If necessary use a rubber mallet to tap into place Refer to figure 5 5 5 14 Speed Potentiometer Replacement NOTE Retain all hardware for reassembly unless otherwise advised 1 Turn centrifuge power off and unplug power cord 2 From the front bezel use an Allen wrench to remove the set screw from the SPEED knob Remove knob 3 Remove the nut and star washer 4 Remove the two phillips screws locat...

Page 84: ...or and install a rotor with a full comple ment of buckets 4 each 11 Set the TIME dial for a short run 12 Slowly turn the shaft of the speed potentiometer until the speed stabilizes at 3000 rpm Once the speed has stabilized place the knob on the shaft so that the black line indicator is aligned at the 12 o clock position on the bezel overlay Then tighten the knob set screw the dial is properly set ...

Page 85: ...Table of Contents SORVALL Centrifuges xii Table Page 6 1 TC6 Troubleshooting Chart 6 1 Contents Section 6 Troubleshooting ...

Page 86: ...c to dc regulator 7 Loss of dc output connection at power supply 8 Input fuse too small nuisance fuse opening W A R N I N G Because the high voltages in this centrifuge can cause severe electrical shock any repair or re placement procedures should be attempted by trained personnel only No power to TC6 AC to centrifuge but no dis play 1 Check supply ac for open breaker fuse 1 Advise customer of pro...

Page 87: ...ctive Control Printed Cir cuit Board or Timer Encoder 9 Display Printed Circuit Board destroyed Replace board 10 Locate problem in 5V supply Repair 11 Display Printed Circuit Board destroyed Replace board 1 Locate problem in 30 Vac supply Repair 2 Motor Control Printed Circuit Board destroyed Replace board 3 Motor Control Printed Circuit Board destroyed Replace board 4 Replace pot 5 Replace switch...

Page 88: ...ifier on Control Printed Circuit Board b Missing capacitor on Display P C Board 9 Check for connection between pins 2 and 3 of U11 on the Control P C Board 1 Loss of 30 Vac 2 Loss of latch release signal 3 Shorted latch release 4 DOOR switch stuck ON 5 DOOR switch stuck OFF 2 Replace the Display Printed Circuit Board 3 Replace the Display Printed Circuit Board 4 Replace the Control Printed Circuit...

Page 89: ...ach signal 1 Loss of cooling fan power 2 Cooling fan not working 1 30 Vdc supply on Motor Con troller Printed Circuit Board is less than 25 Vdc 1 Speed set stuck at maximum 5 Replace DOOR switch 6 Replace Control Printed Circuit Board 7 a Replace Control Printed Circuit Board b Replace Motor Control Printed Circuit Board c Replace motor 1 Replace the Display Printed Circuit Board 2 Replace the Dis...

Page 90: ...ircuit Board 2 Replace Control Printed Circuit Board 3 Replace Control Printed Circuit Board 4 a Replace Control Printed Circuit Board b Replace Motor Control Printed Circuit Board c Replace motor 5 Replace Motor Control Printed Circuit Board 6 Replace Motor Control Printed Circuit Board 7 Replace the Motor Control Printed Circuit Board 1 Replace the Motor Control Printed Circuit Board 1 Replace s...

Page 91: ... open 1 Faulty motor bearings 2 Faulty fan motor bearings 1 Loss of Door Closed or Door Latched switch signal 2 Defective Control Printed Cir cuit Board 1 a Check rotor for balanced load b Make sure all buckets are properly placed c Clean rotor pins buckets 1 Replace motor 2 Replace fan 1 a Microswitch out of adjustment Adjust b Door Closed Switch defective Replace the switch 2 Replace Control Pri...

Page 92: ...TC6 Table of Contents xiii Contents Section 7 Maintenance Page 7 1 Routine Maintenance 7 1 7 2 Preventive Maintenance 7 3 Preventive Maintenance Checklist ...

Page 93: ...ber or a 2 glutaraldehyde solution to sterilize it For general radioactive decontamination use a solution of equal parts of 70 ethanol 10 SDS and water Follow this with ethanol rinses then deionized water rinses Dry with a soft absorbent cloth Dispose of all wash solutions in proper containers for radioactive waste C A U T I O N Chlorides are extremely harmful to aluminum alloy rotors and can caus...

Page 94: ... is installed to reduce the chance of the rotor sticking to the spindle To keep the surface of the spindle smooth polish occasionally with 400 Emery cloth Always wipe the spindle clean after polishing 4 Cabinet The entire centrifuge surface should be kept clean Clean the enameled cabinet panels with a household wax cleaner Use a brush to help remove ground in dirt Rinse thoroughly with water immed...

Page 95: ...cleaning procedures that should be done routinely by the operator Check for evidence that the procedures are being done properly Discuss any potential problems with the operator and or customer b Rotor Inspection 1 Inspect all rotors used with the centrifuge for corrosion and wear for example pitting from contact with caustic materials 2 Inspect the locking stud 3 For sealed buckets inspect the se...

Page 96: ...f the centrifuge The meter should show less than 0 1 ohms 115 Volt receptacle Measure either side of the line to the ground receptacle Voltage should be 115 V ac on one line and 0 V ac on the other If no voltage is measured the receptacle is either not properly grounded or the power cord and or plug is defective 220 Volt receptacle Measure either side of the line to ground receptacle Voltage shoul...

Page 97: ... tachometer Check the rotor through the viewing port located in the center of the chamber door If verifying with a frequency meter attach leads to test points labelled TACH on Control Printed Circuit Board Frequency recorded should be multiplied by five The reading given by the tachometer or frequency meter should be in agreement with the SPEED display to within 1 of the set run speed 7 Use a stop...

Page 98: ...ration Certification Test Parameters After Cal Error Displayed Tolerance Low Speed Setting Time High Speed Initials Passed 1000 rpm 3000 rpm 10 min B Calibration Certification 1 1 A Preventive Maintenance Preliminary Checks Proper cleaning Clean lubricate motor shaft Hinge adjustment Latch adjustment Rotor Inspection Locking stud and seal ring Rotor serial number _________ Pre Run Checks Door seal...

Page 99: ...tents SORVALL Centrifuges xiv Figures Page 8 1 TC6 Main Assembly 8 2 8 2 TC6 Chassis Assembly 8 4 Tables Page 8 1 Parts TC6 Main Assembly 8 3 8 2 Parts TC6 Chassis Assembly 8 5 Contents Section 8 Illustrated Parts ...

Page 100: ...ge 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 When ordering replacement parts be prepared to specify the part number description and quantity of each item desired along with the centrifuge model TC6 and serial number ...

Page 101: ...Illustrated Parts SORVALL Centrifuges 8 2 Figure 8 1 TC6 Main Assembly ...

Page 102: ...es item 8 78023 8 Magnet Door Sensor part of item 7 91268 9 Hinge Door 91170 10 Power Cord 125V 10A for 60Hz Centrifuges 250V 10A for 50Hz Centrifuges 67080 91605 11 Plug Door Sensor Cover 66246 12 Sensor Door Closed 78280 13 Screw 10 24 Gray 90882 14 Switch Power DPST 91164 15 Switch Control Momentary SPST 91163 16 Knob Control 78150 Setscrew for knob 66995 17 Felt Washer behind Speed Knob 92237 ...

Page 103: ...Illustrated Parts SORVALL Centrifuges 8 4 Figure 8 2 TC6 Chassis Assembly ...

Page 104: ...ng requires foam strips item 9 78102 9 Foam Strip Guard Ring 2 required 61624 10 Fan 91187 11 Grille Fan No Longer Available 78090 12 Power Connector 60Hz 78028 Line Filter 50Hz 78038 13 Fuse 5 x 20mm 2 required 3 15A for 100V 120V 60Hz 91428 2A for 220V 240V 50Hz 91203 14 Spacer Pad Guard Ring 91310 15 Shock Mount Motor 91174 16 Motor Mounting Plate 78107 17 Motor with Nut and Lockwasher 78120 18...

Page 105: ...NOTES ...

Page 106: ...NOTES ...

Page 107: ...NOTES ...

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Page 109: ...3 270 2166 Or contact your local representative for SORVALL products FRANCE SORVALL France SA LP 912 LES CONQUERANTS 1 avenue de l Atlantique Les Ulis 91976 COURTABOEUF Cedex Téléphone 01 69 18 77 77 FAX 01 60 92 00 34 Other EUROPE AFRICA or MIDDLE EAST SORVALL International Sales International Centre Boulton Road Stevenage Hertfordshire SG1 4QX UNITED KINGDOM Telephone 44 1438 342900 FAX 44 1438 ...

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