Du Pont SORVALL RC-5 User manual

SERVICEMANUALSORVALC
RC-5 &
RC-5BAUTOMATICSUPERSPEEDREFRIGERATEDCENTRIFUGESDu
Pont CompanyMedical
ProductsSorvall®
InstrumentsWilmington,
Delaware
19898U.S.A.Sorvall®
Centrifuges
<ffl^PN
50126-1Issued
June 1990
******Note*******
Effective January 1, 2003 The Sorvall RC-5 centrifuge will no
longer be supported. Parts will be supplied if currently in
Kendro stock until depletion. Once depleted, parts will no
longer be available.

Sorvall®
CentrifugesThis
manual is a guide for service of
theSORVALL®
RC-5 and RC-5B
CentrifugesData
herein has been verified and validated and is believed adequate for the intended useof
the centrifuges. If the centrifuges or procedures are used for purposes over and abovethe
capabilities specified herein, confirmation of their validity and suitability should
beobtained,
otherwise, DuPont does not guarantee results and assumes no obligation
orliability.
This publication is not a license to operate under, nor a recommendation
toinfringe
upon. any process patents.This
service manual is intended for use only by qualified service personnel. Due to thehigh
electrical potential in the centrifuges described herein, untrained individuals mustnot
attempt any of the procedures contained in this service manual.This
service manual is intended as a service aid. While the manual is kept current
andincludes
information regarding significant design changes, designs may still vary fromunit
to
unit.NOTES,
CAUTIONS and WARNINGS within the text of this manual are used to emphasizeimportant
and critical
instructions.WARNING:
AWaming Informs the operator of a hazard or an unsafe practice that couldresult
in personal injury, affect the operator's health, or contaminate
theenvironment.CAUTION:
A Caution informs the operator of an unsafe practice that could result
indamage
of equipment.NOTE:
A Note highlights essential
information.•IIllllll^t;:^:;:;:;:;:;:;:;:;:;:;:;:;:^:;yJI>;y^:yJlijll:l!>;^'li!t!MI»y^>f{^^rmmmm._
.....^.^
_._.__
...^_^.^..-^.-...^..._.-.--.-—-_^ILl^A;:M»:^^^^^

Sorvall® Centrifuges Table of
ContentsTable
of
ContentsParagraph
PageSection
1. INTRODUCTION1-1.
Scope of the Manual. .................................... 1-11-2.
Warnings and Cautions .................................. 1-11-3.
Using This Manual...................................... 1-31-4.
Troubleshooting Information. .............................. 1-31-5.
Trouble Diagnosis. ...................................... 1-61-6.
Service Decontamination Policy ............................ 1-71-7.
Warranty Responsibility ..................................
1-8Section
2. DESCRIPTION2-1.
Purpose of Equipment ................................... 2-12-2.
Description. ........................................... 2-12-3.
Controls and Indicators .................................. 2-22-4.
Specifications .......................................... 2-82-5.
Location .............................................. 2-92-6.
Routine Inspection and Cleaning ........................... 2-92-7.
Lubrication. ...........................................
2-10Section
3. THEORY OF OPERATION3-1.
General .............................................. 3-13-2.
RC-5 Theory of Operation................................. 3-13-3.
RC-5B Theory of Operation. ............................... 3-53-4.
Summary of HOLD and RUN Modes .........................
3-6Section
4. DRIVE SYSTEM
CIRCUIT4-1.
General .............................................. 4-14-2.
Drive Motor Circuit. ..................................... 4-14-3.
Drive Motor Enable Circuit................................ 4-24-4.
Brake Circuit .......................................... 4-114-5.
Brush Warning Circuit ................................... 4-134-6.
Speed Control Circuit.................................... 4-164-7.
Zero Speed Detector Circuit ............................... 4-174-8
Overspeed Detector Circuit. ............................... 4-184-9.
Automatic Rate Controller Circuit, RC-5B .................... 4-224-10.
Door Interlock Circuit. ...................................
4-28iii

Table of Contents Sorvall®
CentrifugesTable
of Contents
(continued)Paragraph
PageSections.
REFRIGERATION
SYSTEM5-1.
General .............................................. 5-15-2.
Refrigeration Cycle ...................................... 5-15-3.
Condensing Unit Electrical Circuit .......................... 5-25-4.
Refrigeration Control .................................... 5-45-5.
Temperature Control Circuit. .............................. 5-55-6.
Overtemperature Detection Circuit..........................
5-11Section
6. MAINTENANCE AND
REPAIR6-1.
General .............................................. 6-16-2.
Preventive Maintenance Checks ............................ 6-1a.
Checks with Power OFF .............................. 6-1b.
Checks with Power ON ............................... 6-26-3.
Cabinet Panel Removal................................... 6-26-4.
Drive Motor Replacement ................................. 6-36-5.
Torque Trimmer Potentiometer R204 Replacement .............. 6-66-6.
Saturable Reactor Replacement ............................ 6-76-7.
Drive Motor Brush Replacement, RC-5 ....................... 6-86-8.
Drive Motor Brush Replacement, RC-5B...................... 6-96-9.
Compressor Start and Run Capacitors
andPotential
Relay Replacement. ............................. 6-136-10.
Condenser Fan Replacement .............................. 6-146-11.
Condenser Fan Motor Replacement ......................... 6-156-12.
Evaporator Replacement ................................. 6-176-13.
Condensing Assembly Replacement ......................... 6-236-14.
Electronic Controls Replacement ........................... 6-25a.
Resistance Temperature Detector...................... 6-25b.
Relays K201 Compressor Relay, and K202 Motor Relay ..... 6-26c.
Transformers T201 and T202 (T203) ................... 6-27d.
Circuit Breaker CB301 (RC-5) ........................ 6-28e.
Circuit Breaker CB301 (RC-5B) ....................... 6-30f.
P.C. Assembly 20809 ............................... 6-30g.
P.C. Assembly 20126 (RC-5. SN 7500414 and Higher).and
50195 (RC-5B) ............................... 6-31h.
Key Switch S202 (RC-5) ............................. 6-32i.
Door Microswitch S301 (RC-5) ........................ 6-33j.
Door Hinge Microswitch S301 (RC-5B) .................. 6-33k.
Door Solenoid L301 (RC-5)........................... 6-341.
Door Release Microswitch S303 (RC-5B). ................ 6-35m.
Door Solenoid L301 (RC-5B).......................... 6-36n.
Tachometer Indicator M101 .......................... 6-36o.
Temperature Indicator M102 .........................
6-38iv
---------
12987

Sorvall® Centrifuges Table of
ContentsTable
of Contents
(continued)Paragraph
PageSection
6. MAINTENANCE AND REPAIR (continued)p.
Timer (S106 and S107).............................. 6-39q.
Rate Control Rl 10 (RC-5B). .......................... 6-406-15.
Door Adjustment ....................................... 6-40a.
Preparation ...................................... 6-40b.
Adjustment of Mounting Bars ........................ 6-41c.
Hinge Height Adjustment............................ 6-41d.
Latch Height Adjustment ............................ 6-42e.
Reinstallation of Components......................... 6-436-16.
Refrigeration Maintenance ................................ 6-43a.
Compressor Resistance Values ........................ 6-43b.
Compressor Burnout ............................... 6-43c.
Triple Sweep Evacuation of Refrigerant and Charge ........ 6-44d.
Checking Refrigerant Charge ......................... 6-45e.
Leak Detection .................................... 6-45f.
Evaporator Liner Cleaning ...........................
6-45Section
7. CALIBRATION PROCEDURES7-1.
General .............................................. 7-17-2.
Calibration Sequence .................................... 7-17-3.
Calibration Criteria and Adjustment Locations ................. 7-17-4.
Personnel Safety........................................ 7-17-5.
Test Equipment Required ................................. 7-27-6.
Calibration Procedures ................................... 7-2a.
Speed Indicator M101 Zero Adjust.................... 7-2b.
Temperature Indicator Ml 02 Zero Adjust............... 7-2c.
Speed Control Potentiometer R106.................... 7-2d.
Source Power .................................... 7-2e.
Torque Trimmer Potentiometer R204 .................. 7-3f.
Speed Control Low Speed Potentiometer (R18)and
High Speed Potentiometer (R9) Set ................ 7-5g.
Speed Indicator M101 Tracking AdjustmentPotentiometer
(R109) .............................. 7-5h.
Overspeed Detector Potentiometer (R73)................ 7-5i.
Power Supply. Temperature Control: +5 V (R7)and
+10 V (R4)................................... 7-6j.
Temperature Indicator Ml 02 Deflection Adjust-20°C
Potentiometer (R41) and +40°CPotentiometer
(R40) ............................... 7-6k.
Rotor Speed Temperature Differential Set-PointCalibration
at 20 000 Rpm (R41) ..................... 7-71.
Temperature Control Set-Points Potentiometer(R42
and R43) ................................... 7-8v

Table of Contents Sorvall®
CentrifugesTable
of Contents
(continued)Paragraph
PageSection
7. CALIBRATION PROCEDURES (continued)m.
Overtemperature Detection Set-Pointer (R58) ............ 7-8n.
Compressor Timing Potentiometer (R84)................ 7-9o.
Timer Control Knob and SwitchAdjust
(S106 and S107) ............................ 7-107-7.
RC-5B Automatic Rate Controller Calibration..................
7-10Sections.
ILLUSTRATED
PARTS8-1.
General . . .8-2.
Indentation8-18-1List
of
TablesTable
Page1-1.
Components Abbreviation ................................ 1-41-2.
Number/Letter System for P/J 304 ......................... 1-41-3.
Symbols Used on Schematics .............................. 1-51-4.
Trouble Diagnostic Chart ................................. 1-62-1.
Function of Controls and Indicators—RC-5 ................... 2-22-2.
Function of Controls and Indicators—RC-5B .................. 2-52-3.
Superspeed Rotor Specifications............................ 2-94-1.
Troubleshooting Chart, ac Power Distribution and DriveMotor
Circuits ........................................ 4-34-2.
Troubleshooting Chart, Indicator Circuits. RC-5................ 4-44-3.
Troubleshooting Chart. Indicator Circuits, RC-5B. .............. 4-54-4.
Troubleshooting Chart. Speed Control and DriveMotor
Circuits ........................................ 4-74-5.
Troubleshooting Chart. Drive Motor Enable and TemperatureControl
Circuits ....................................... 4-94-6.
Troubleshooting Chart. Brake Circuit........................ 4-124-7.
Troubleshooting Chart, Drive Motor Brushes .................. 4-154-8.
Troubleshooting Chart. Speed Control Circuit ................. 4-194-9
Troubleshooting Chart, Overspeed Detector Circuit ............. 4-204-10.
Troubleshooting Chart, Automatic Rate Controller .............. 4-244-11.
Troubleshooting Chart, Door Interlock Circuits ................ 4-315-1.
Troubleshooting Chart, Refrigeration Circuits.................. 5-35-2.
Troubleshooting Chart. Compressor and TemperatureControl
Circuits ....................................... 5-95-3.
Troubleshooting Chart. Temperature Control Circuits ...........
5-12vi

Sorvall® CentrifugesTable of
ContentsList
of Tables
(continued)Table6-1.7-1.7-2.7-3.8-1.8-2.8-3.8-4.8-5.8-6.8-7.8-8.8-9.8-10.8-11.Tecumseh
Compressor Motor Resistance Values.....Calibration
Sequence .........................Test
Point Descriptions for P.C. Board. PN 50059 . . .
.Potentiometer
Adjustment for P.C. Board. PN 50059.
.RC-5
Parts List..............................RC-5
Hinge Assembly.........................RC-5B
Parts List ............................RC-5B
Motor and Brush Lift Assembly ............RC-5B
Door and Interlock Assembly. .............Door
Assembly. PN 50095 .....................Door
Interlock Assembly, PN 50082 ..............Selected
Spare Parts, Minimum Inventory .........Substitute
Capacitors for RC-5/5B Condensing UnitsExterior
Panels for RC-5B. .....................Gyro
and Motor Bearing Kits
...................Page6-437-47-127-138-28-138-148-318-328-358-378-398-408-408-40List
of
IllustrationsFigure
Page2-1.
Location of Controls and Indicators—RC-5 .................... 2-32-2.
Location of Controls and Indicators—RC-5B. .................. 2-73-1.
Schematic Diagram —RC-5 Power Supply .................... 3-93-2.
Schematic Diagram—RC-5 System Operation. ................. 3-103-3.
RC-5 Cabinet Fan, Compressor Fan and Drive MotorEnable
Circuits ....................................... 3-133-4.
RC-5 Brush Warning Indicator Circuit ....................... 3-143-5.
RC-5 Door Interlock Circuit ............................... 3-153-6.
RC-5 Door. Main Power, ON. OFF and Brake Indicator Circuit ..... 3-153-7.
RC-5 Tachometer Generator and Indicator Circuit .............. 3-153-8.
RC-5 Drive Motor and Brake Circuit......................... 3-163-9.
RC-5 Temperature Meter and Set Point Circuit, andSpeed
Control Potentiometer ............................. 3-173-10.
RC-5 Compressor Circuit ................................. 3-183-11.
Schematic Diagram, RC-5B Power Supply to SN 7810303 ........ 3-193-12.
Schematic Diagram, RC-5B Power Supply, SN 7810304and
Higher .......................................... 3-203-13.
Schematic Diagram. RC-5B System Operation to SN 7810303 ..... 3-223-14.
Schematic Diagram, RC-5B System Operation, SN 7810304and
Higher .......................................... 3-243-15.
Timing Sequence for RC-5B Automatic Rate Controller. .......... 3-263-16.
Schematic Diagram. RC-5B System Operation,Automatic
Rate Controller ................................
3-27Vll

Table of Contents Sorvall®
CentrifugesList
of Illustrations
(continued)Figure
Page3-17.
RC-5B Drive Motor Enable Circuit .......................... 3-283-18.
RC-5B Brush Warning Indicator Circuit ...................... 3-293-19.
RC-5B Door Interlock Indicator Circuit. ...................... 3-293-20.
RC-5B Main Power. ON, Refrigeration and BrakeIndicator
Circuits ...................................... 3-293-21.
RC-5B Tachometer Generator and TachometerDeflection
Circuit....................................... 3-303-22.
RC-5B Drive Motor and Brake Circuit ....................... 3-313-23.
RC-5B Temperature Meter and Set Point Circuit and SpeedControl
Potentiometer .................................. 3-323-24.
RC-5B Compressor Circuit................................ 3-323-25.
RC-5 System Power Distribution Diagram, PN 50035-3 .......... 3-333-26.
RC-5 System Schematic. PN 50031-4 ........................ 3-353-27.
RC-5 Lower Control Panel Wiring Diagram, PN 50041-6 .......... 3-413-28.
RC-5 P.C. Board to Lower Control Panel Wiring Diagram,PN
50039-2 .......................................... 3-433-29.
RC-5/5B P.C. Board Schematic Diagram. PN 20810-9 ........... 3-453-30.
RC-5B System Schematic. PN 50208-10. ..................... 3-513-31.
RC-5B System Schematic, PN 50208-8....................... 3-553-32.
RC-5B System Schematic, PN 50208-2....................... 3-593-33.
RC-5B Lower Control Panel P.C. Board Schematic Diagram,PN
50346-1 .......................................... 3-653-34.
RC-5B Rate Control Schematic Diagram. ..................... 3-673-35.
RC-5B Wiring Diagram. PN 50204-8......................... 3-693-36.
Rate Control System Schematic. PN 50160-8 .................. 3-733-37.
Rate Control Wiring Diagram. PN 50161-4 .................... 3-754-1.
Drive Motor Circuit. Simplified Schematic Diagram ............. 4-14-2.
Drive Motor Enable Circuit, Simplified Schematic Diagram ....... 4-24-3.
Brake Circuit, Simplified Schematic Diagram .................. 4-114-4.
Brush Warning Circuit, Simplified Schematic Diagram........... 4-144-5.
Speed Control Circuit, Simplified Schematic Diagram. ........... 4-164-6.
Zero Speed Detector Circuit. Simplified Schematic Diagram ....... 4-174-7.
Overspeed Detector Circuit. Simplified Schematic Diagram ....... 4-184-8.
Automatic Rate Controller. Block Diagram .................... 4-224-9.
Automatic Rate Controller, Simplified Block Diagram ............ 4-234-10.
Door Interlock Circuit. RC-5. Simplified Schematic Diagram ...... 4-294-11.
Door Interlock Circuit. RC-5B. Simplified Schematic Diagram ..... 4-305-1.
Fluid Circuit of Refrigeration System ........................ 5-15-2.
RC-5 High Torque Motors—3 Terminal Overload-Potential
Relay ........................................ 5-25-3.
Refrigeration Electrical Circuit, Simplified SchematicDiagram
(RC-5B) ...................................... 5-55-4.
Temperature Control Circuit, Block Diagram .................. 5-65-5.
Temperature Control Circuit, Simplified Schematic Diagram ...... 5-75-6.
Overtemperature Detection Circuit, Simplified Block Diagram ..... 5-115-7.
Capacitor Box Wiring Diagram .............................
5-13viii

Sorvall® Centrifuges Table of
ContentsList
of Illustrations
(continued)Figure
Page6-1.
through 6-61. Illustration of Replacement Procedures ............ 6-3through
6-447-1.
Test Point and Adjustment Locations for P.C. Board Assembly,PN
50059 ............................................ 7-37-2.
Test Setup for Temperature Meter Deflection Adjustment......... 7-78-1.
RC-5 Parts Location, Gyro Action Drive Assembly. .............. 8-58-2.
RC-5 Parts Location, Motor. Tachometer and Lower CouplingAssembly
............................................ 8-68-3.
RC-5 Parts Location. Control Console (Rear View)............... 8-78-4.
RC-5 Parts Location, Lower Control Panel P.C. Board.PN
20126 ............................................ 8-88-5.
RC-5 Parts Location, Cabinet (Rear View) ..................... 8-98-6.
RC-5 Parts Location. Cabinet (Front View) .................... 8-108-7.
RC-5 Parts Location. Cabinet (Right Side View). ................ 8-118-8.
RC-5 Door Handle and Latching Assembly .................... 8-128-9.
RC-5 Hinge Assembly.................................... 8-138-10.
RC-5B Parts Location: Gyro Action Drive, Lower Couplingand
Motor Assembly.................................... 8-178-11.
RC-5B Parts Location: Control Console (Rear View toSN
7810303) ......................................... 8-188-12.
RC-5B Parts Location: Control Console (Rear View,SN
7810304 and Higher) ................................ 8-198-13.
RC-5B Parts Location: Cabinet (Rear View to SN 7809416)........ 8-208-14.
RC-5B Parts Location: Cabinet (Rear View, SN 7809417and
Higher) .......................................... 8-218-15.
Lower Control Panel Assembly ............................. 8-228-16.
RC-5B Parts Location: P.C. Assembly 12370 to SN 7809416. ...... 8-238-17.
RC-5B Parts Location: P.C. Assembly 12370 (SN 7809417and
Higher) .......................................... 8-238-18.
RC-5B Parts Location: Cabinet (Front View) ................... 8-248-19.
RC-5B Front View. ...................................... 8-258-20.
RC-5B Parts Location: Cabinet (Right Side View) ............... 8-268-21.
RC-5B Parts Location: Automatic Rate Controller,Control
Panel......................................... 8-278-22.
Parts Location: Gyro Action Drive. Lower Coupling and MotorAssembly
(SN 8004600 and Higher) ........................ 8-288-23.
Parts Location: Gyro Action Drive Assembly. PN 12817(SN
8004600 and Higher) ............................... 8-298-24.
RC-5B Parts Location: Drive Motor and BrushLift
Assembly .......................................... 8-308-25.
RC-5B Door and Interlock Assembly. ........................ 8-348-26.
Door Assembly ......................................... 8-368-27.
Door Interlock Assembly. .................................
8-38ix/x

Sorvall®
CentrifugesIntroductionSection
1INTRODUCTION1-1.
Scope of the
ManualThis
manual is a guide for servicing the SORVALL RC-5 and RC-5B Automatic Refriger¬ated
Superspeed Centrifuges.It
has been written for the SORVALL factory trained Service Specialist who is familiar
withelectronics,
knows the operating procedures of these centrifuges and understands factorymethods
of performing adjustments and calibrations.This
manual provides such personnel with a fault isolation method that isolates
andidentifies
the cause of a problem within the centrifuge, as well as a parts list
andInformation
for ordering replacement parts necessary for repairs of parts or systemswithin
the
centrifuge.Service
personnel must read and understand the theory of operation beforeservicing
the
centrifuge.1-2.
Warnings and
CautionsWhile
warnings and cautions appear wherever appropriate throughout the manual,service
personnel should familiarize themselves with those listed in this section beforeattempting
to service a
centrifuge.1-1

introduction Sorvall®
Centrifugesi^ilti^as^iw^:^^SiBlilillliliB^ii;t^§-||i^
^sifci^^^^^CAUTIONHarmful
ChloridesChlorides
are extremely harmful to aluminum alloys and must not come
incontact
with aluminum alloy rotors under any condition. Such contact willresult
in stress corrosion which attacks the inside and outside of a rotorcausing
microscopic surface cracks that weaken those areas without
visiblewarning.CAUTIONUnequal
masses in CompartmentsDo
not operate the centrifuge rotor with unequal masses in opposingcompartments
(see Table
2-3).1-2

Son/all® Centrifuges
introductionCAUTIONOverheatingDo
not locate this centrifuge near heated areas such as heat pipes,radiators,
etc. Avoid close grouping of centrifuges or other heat producingequipment,
because one will act as a heat source for the other and affectits
operation. Maintain an ambient room temperature of 25°C or lower
formaximum
performance.1*3.
Using This
ManualWhen
using this manual to correct a malfunction In the centrifuge, use the
followingprocedure:1.
Define the type of malfunction.2.
Eliminate unrelated causes such
as:a.
Power supply (including wall circuit breaker monitoring the supply).b.
Failure to meet all conditions of HOLD mode.c.
Failure to meet all conditions of RUN mode.d.
Failure to meet electrical requirements.3.
Refer to diagnostic chart fTable 1-4) then isolate the malfunction to a specific area.4.
Refer to the specific sections indicated by the diagnostic chart table then proceed
asfollows:a.
Read the system theory (Sections 3. 4 and
5).b.
Use the troubleshooting charts to troubleshoot the system until the source of
themalfunction
is located (Sections 4 and
5).c.
Order parts as required (Section
8).d.
Refer to Repair or Replacement procedure in Section
6.e.
Calibrate the centrifuge to specifications as required (Section
7).1-4.
Troubleshooting Informationa.
AbbreviationsUse
Table 1-1 to identify and locate the components referenced and abbreviated in
thetroubleshooting
charts in Sections 4 and
5.1-3

IntroductionSon/all®
CentrifugesTable
1-1. Components
AbbreviationSymbol*CBCRDSFKMPJRSWTTBWDefinitionCircuit
BreakerRectifierLampFuseRelayMeterPlug
JackResistorSwitchTransformerTerminal
BoardWireLocationFront
of CentrifugeBrush
warning boxLower
Control PanelIndicator
PanelFront
of InstrumentLower
Control PanelIndicator
PanelLower
Control Panel**Lower
Control PanelIndicator
PanelLower
Control PanelLower
Control PanelLower
Control Panel*
All numeric contact points which are not proceeded by a letter symbol are located on the Lower Control Panel."
Only P/J 304 is referenced for testing. P/J 304 is a 22-pin connector located on the right side of PC assembly 20126 (RC-5) or 50195(RC-5B)
on the lower control panel. The 22 pins connect PC assembly 20126 (RC-5) or 50195 (RC-5B) at right angles to P.O. board20809.
On P/J 304 numbers and letters go from top to bottom with numbers on the component side (left) and letters on the backor
dad side (right) as shown in Table
1-2.Table
1-2. Number/Letter System for P/J
304i234567891011-
A-
B-
C-
D-
E-
F-
H-
J-
K-
L-
M1213141516171819202122-
N-
P-
R-
S-
T-
U-
V-
W-
X-
Y-
Z*
Note that letters G, I, 0. and Q are skipped.b.
SymbolsUse
Table 1-3 to identify and locate the symbols used In the schematics In Sections 3,
4and
5.1-4

Sorvall® CentrifugesIntroductionTable
1-3. Symbols Used on
SchematicsSymbol—S/\/\/—
Resistor —
Fixed-(VSA^-r\~Y\-\^"^E^o——cNC
—J"W^^——'<:b'——^~@--^+
4
^Not
- , NotConnected
Connected
ConnectedDescriptionResistor
—
ConeAuto-TransformerRelay
(Typical)Resistor
—
VariablePilot
LightCoil
RelayTorque
TrimmerContact
Relayor
Circuit
BreakerDiodeSymbol—1|—
Or —D— Or ——| (—— Capacitor11
U 1 \ —
Polarized-\\-AT—'
Circuit Breaker
ThermalPrimary^
f Secondary
Transformer^^^
Switch Single Pole — Single~°
°—— Throw
(SPST)————'r"""'
Switch, Momentary, Normally——°
| °—
Open-^^AC
ACCoil
CoilrrvoDC
CoilDescriptionCapacitor
—
Non-PolarizedSwitch,
Momentary,
NormallyClosedFuseGroundSaturable
ReactorConductors7/79PCS
1321-5

IntroductionSorvall®
Centrifuges1-5.
Trouble
DiagnosisTable
1-4 Is a list of malfunctions with reference to applicable troubleshooting charts. Italso
references the circuit in which the trouble may be isolated and the paragraph numberwhich
provides the circuit theory of operation. Service personnel must read the theoryof
operation and thoroughly understand it before troubleshooting is
attempted.Table
1-4. Trouble Diagnostic
ChartMalfunctionLoss
of main
powerDrive
motor does not
runDoor
cannot be openedin
HOLD mode
(RC-5B)Refrigeration
system isunable
to provide desiredtemperature
In RUN
orHOLDUpon
pressing ON switch(RC-5)
or START switch(RC-5B),
ON lamp (RC-5)or
START lamp (RC-5B)falls
to light, drive motordoes
not run but POWERlamp
remains
litCompressor
runs contin¬uously,
does not cycle inRUN
or HOLD
modeOverspeed
cutout doesnot
occur. No systemmode
transfer at over-speed.
Speed
indicatorinoperative.Tachometer
indicatesoverspeed
at too highor
too low rpm.No
speed
controlCircuitPower
distributionand
drive
motorSpeed
control anddrive
motorDoor
InterlockRefrigerationDrive
motor enableand
temperaturecontrolTemperature
controlOverspeed
detectionOverspeed
detectionSpeed
controlParagraph3-2,
4-23-2,
4-24-63-2.4-105-2,
5-35-43-2,
4-24-3,
5-53-2.
5-25-4,
5-53-2,
4-83-2,
4-84-6,
7-6ReferenceFigure3-1. 4-14-23-1.3-113-12.
4-24-44-115-1through5-64-1.4-23-3,
5-15-44-94-94-5Table4-14-44-44-115-1,
5-24-55-34-94-8,
4-94-81-6(continued)

Son/all® CentrifugesIntroductionTable
1-4. Trouble Diagnostic Chart
(continued)MalfunctionBrushes
wear rapidly orare
noisyIncorrect
SLOW modeoperation
(RC-5B)System
does not SLOWstart
but goes directly Intoand
remains In high speedoperation
for duration oftimed
run cycle
(RC-5B)System
remains In SLOWstart;
does not transfer toRUN
mode
(RC-5B)Rotor
does not turn InSLOW
mode only
(RC-5B)Indicator(s)
do not
light(RC-5)Indicators)
do not
light(RC-5B)CircuitMotor
brushesRate
controllerRate
controllerRate
controllerRate
controllerSystem
operationSystem
operationParagraph3-2,
4-56-7,
6-83-2,
4-97-73-2,
4-97-73-2,
4-74-93-2,
4-74-93-2,
4-24-33-2,
4-24-3ReferenceFigure3-4,
4-44-94-94-94-93-23-13Table4-74-104-104-104-104-1,
4-24-54-1.
4-34-51-6.
Service Decontamination
Policy111^^If
a centrifuge or rotor that has been used with radioactive or pathogenic material requiresservicing
by DuPont personnel, either at the customer's laboratory or at DuPont facilities.comply
with the following procedure to ensure the safety of personnel.•
Clean the centrifuge and/or rotor to be serviced of all encrusted material
anddecontaminate
it prior to servicing by the DuPont representative. There must beno
radioactivity detectable by survey equipment.•
Complete and attach Decontamination Information Certificate (Sorvall® Instru¬ments
Form No. IPDP-59 or SORVALL No. E53063) to the centrifuge and/or rotor.1-7

Introduction Sorvall® CentrifugesIf
the centrifuge or rotor to be serviced does not have a Decontaminatlon InformationCertificate
attached and, in our opinion, presents a potential radioactive or biologicalhazard,
our representative will not service the equipment until proper decontaminationand
certification is complete. IfDuPont receives a centrifuge or rotor at its Service facilitywhich,
in its opinion, is a radioactive or biological hazard, the sender will be contacted
forInstructions
as to disposition of the equipment. Disposition costs will be borne by
thesender.Decontamination
Information Certificates are included in the back of this manual. Ad¬ditional
certificates are available from local Account Representative. Service Representa¬tive,
or distributor. In the event these certificates are not available, a written statementcertifying
that the centrifuge and/or rotor has been properly decontaminated
andoutlining
the procedure used will be
acceptable.NOTEThe
Service Representative will note on the Customer Service RepairReport
whether or not decontamination was required. When decontami¬nation
is required, the representative will specify the contaminant and
thedecontamination
procedure used. If no decontamination was required, itwill
be so
stated.1-7.
Warranty
ResponsibilityWhenever
service of the centrifuge is attempted by anyone other than an employee
ofDuPont.
that Individual is assuming the risk of voiding the centrifuge warranty, which isas
follows:The
RC-5 and RC-5B Automatic Superspeed Refrigerated Centrifuges are warranted tobe
free from defects in material and workmanship for a period of one year from the dateof
delivery. DuPont will repair or replace and return free of charge any part which
isreturned
to its factory within said period, transportation prepaid by user. and which
isfound
upon inspection to have been defective in materials or workmanship. This warrantydoes
not Include normal wear from use, it does not apply to any centrifuge or part whichhas
been altered by anyone other than an employee of DuPont, nor to any centrifuge whichhas
been damaged through accident, negligence, failure to follow operating instructions,the
use of electric currents or circuits other than those specified on the plate affixed tothe
centrifuge, misuse or
abuse.DuPont
reserves the right to change, alter, modify or improve any of its centrifuges withoutany
obligation whatever to make corresponding changes to any centrifuge previously soldor
shipped.THE
FOREGOING OBLIGATIONS ARE IN LIEU OF ALL OTHER OBLIGATIONS
ANDLIABILITIES
INCLUDING NEGLIGENCE AND ALL WARRANTIES, OF MERCHANTABIL-ITY
OR OTHERWISE. EXPRESSED OR IMPLIED IN FACT OR BY LAW. AND STATE OURENTIRE
AND EXCLUSIVE LIABILITY AND BUYER'S EXCLUSIVE REMEDY FOR ANYCLAIM
OR DAMAGES IN CONNECTION WITH THE SALE OR FURNISHING OF GOODSOR
PARTS. THEIR DESIGN. SUITABILITY FOR USE. INSTALLATION OR OPERATION.DUPONT
WILL IN NO EVENT BE LIABLE FOR ANY SPECIAL OR CONSEQUENTIALDAMAGES
WHATSOEVER, AND OUR LIABILITY UNDER NO CIRCUMSTANCES WILLEXCEED
THE CONTRACTPRICE FORTHE GOODS FORWHICH LIABILITY IS CLAIMED.1-8

Son/all®
CentrifugesDescriptionSection
2DESCRIPTION2-1.
Purpose of EquipmentThe
centrifuge Is designed to separate substances of different densities, remove mois¬ture
or increase gravitational effects by centrifugal force at controlled low
temperatures.2-2.
DescriptionThe
RC-5 and RC-5B centrifuge drive system is equipped with a Universal/Drive motor,designed
and manufactured by DuPont, with a programmed automatic acceleration andbraking
feature. The motor armature is balanced to give quiet operation with minimumvibration
over a full range of operating speeds. This feature extends the life of the bear¬ings
and brushes.This
drive system is fitted with a Gyro-Action Centering Drive* that is compatible witha
wide variety of SORVALL rotors.The
wall of the evaporator rotor chamber is made of an envelope-type, smooth stainlesssteel.
The cabinet has a corrosion-resistant top and is finished with a corrosion-resis¬tant
gray enamel. All cabinet panels are removable for access to service the
centrifuge.Fittings
on the right side of the cabinet provide external connections for a continuousflow
system. The rubber plugs on the inside and outside create a dead air space thatminimizes
heat loss and condensation while sealing out dirt and foreign matter from
theconnecting
tubes.The
refrigeration system is a low-temperature condensing unit of the hermetically-sealed
type. It is designed to maintain the rotor chamber at the preset level within ±1°Cduring
operation.The
centrifuge is equipped with a noise suppressor to reduce its noise level. This sup¬pressor
requires no special care or maintenance.The
centrifuge is operated by Instructions programmed at the control panel. It hassafety
features, designed to protect the operator or service personnel, that will overridethe
programmed instructions under special
conditions.Safety
features include:a.
Door Interlock: Prevents the centrifuge door from opening when the rotor begins
toaccelerate.
In the event of a power failure, the door remains locked and can be over¬ridden
by a special latch release (see Table 2-2, item 13).

DescriptionSon/all® Centrifugesb.
Panel Interlock (installed on RC-5 models only): Located behind the front panel,this
device will interrupt power to the centrifuge drive system if the panel is re¬moved.
Because the panels are mechanically interlocked, the front panel must
beremoved
first.c.
Key Switch (installed on RC-5 models only): To set the centrifuge in the RUN mode,the
starting key must be set to the ON position. Once the instrument is in the RUNmode,
the key may be removed.Some
RC-5B models are equipped with an Automatic Rate Controller. This device ex¬tends
the functional capabilities of the centrifuge by providing a manually controlled,automatically
programmed, slow start-up
feature.2-3.
Controls and
IndicatorsControls
and Indicators for the RC-5 are shown in Figure 2-1 and in Figure 2-2 for theRC-5B.
Tables 2-1 and 2-2 describe the functions of controls and Indicators shown
inFigures
2-1 and 2-2. respectively.Table
2-1. Function of Controls and Indicators -
RC-5NamePositionFunctionMain
circuit breaker
(12)Key
switch
(11)Set
on and
offTurn
on and
offDOOR
switch and lamp (7) Press on and
offON
switch and lamp
(10)REFRIG
lamp
(6)BRUSHES
lamp
(5)Press
on and
off(momentarycontact)Applies
primary power to
circuits.Allows
centrifuge to be placed inRUN
mode. May be turned offand
key removed after RUNmode
is
entered.Switch
permits opening doorduring
RUN mode. Lamp lightswhen
switch is pressed or whenrotor
speed is below 100
rpm,indicating
that door may
beopened.Switch
places centrifuge in RUNmode.
Lamp lights in RUN
mode.Lights
when compressor is
on.Flashes
to indicate worn
motorbrushes.2-2

Sorvall®
CentrifugesFigure
2-1. Location of Controls and Indicators - RC-5