Thermo SORVALL RC-12BP User manual

RC-12BP
User´s Manual
PN 77203 - 2

PN 77203-2
Issued February2007
OPERATING
INSTRUCTIONS
SORVALL RC12 BP
High-Capacity
Lowspeed
Refrigerated
Centrifuge
Thermo Scientific
Asheville, North Carolina
U.S.A.
®TM

Table of Contents SORVALL®Centrifuges
ii
This manual is a guide to the use of the
SORVALL® RC12BP
High-Capacity Lospeed Refrigerated Centrifuge
Information herein has been verified and is believed adequate for the intended use of the centrifuge.
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. Thermo Scientific
does not guarantee results and assumes no obligation for the performance of centrifuges
or other products that are not used in accordance with the instructions provided. This publication is
not a license to operate under, nor a recommendation to infringe upon, any process patents.
Publications prior to the Issue Date of this manual may not contain data in apparent conflict with that
provided herein. Please consider all data in this manual to be the most current.
WARNING,CAUTION, and NOTE within the text of this manual are used to emphasize
important and critical instructions.
WARNING informs the operator of a hazard or an unsafe practice that could result in
personal injury, affect the operator’s health, or contaminate the environment.
CAUTION informs the operator of an unsafe practice that could result in damage of
equipment.
NOTE highlights essential information.
WARNING and CAUTION are accompanied by a hazard symbol and appear in the left
sidebar near the information they correspond to.
IBM is a registered trademark of International Business Machines Corporation; Pentium is a
registered trademark of Intel Corporation; Microsoft, MS, DOS, Windows, Windows 95, and
Windows NT are registered trademarks of Microsoft Corporation.
© 1998, 1999 by Thermo Scientific
!

RC12 BP™ Table of Contents
iii
Important Safety Information
Certain potentially dangerous conditions are inherent to the use of all centrifuges. To ensure safe operation
of this centrifuge, anyone using it should be aware of all safe practices and take all precautions described below
and throughout this manual.
WARNING
When using radioactive, toxic, or pathogenic materials, be aware of all characteristics of the materials and the hazards
associated with them in the event leakage occurs during centrifugation. If leakage does occur, neither the centrifuge nor
the rotor can protect you from particles dispersed in the air. Toprotect yourself, we recommend additional precautions be
taken to prevent exposure to these materials, e.g., use of controlled ventilation or isolation areas.
Always be aware of the possibility of contamination when using radioactive, toxic, or pathogenic materials. Take all
necessary precautions and use appropriate decontamination procedures if exposure occurs.
In the future, if biocontainment products are added, the use of sealed rotors, buckets, and/or sample containers will
offer increased protection from contamination during routine operation. However,these items will not guarantee
protection from accidents resulting from damage to the rotor or buckets. Do run hazardous materials in the centrifuge
unless placed in a biohazard enclosed and operated using all appropriate safety precautions.
Never use any materials capable of producing flammable or explosive vapors, or creating extreme exothermic reactions.
Use SORVALL®rotors only. Use of another manufacturer's rotor can cause rotor failure which could result in personal
injury or centrifuge damage.
Never exceed the maximum rated speed of the installed rotor; to do so can cause rotor failure.
Always reduce (derate) rotor speed as instructed in this manual whenever:
•the rotor speed/temperature combination exceeds the solubility of the gradient material and causes it to precipitate.
•the compartment load exceeds the maximum allowable compartment load specified. See Chapter 4, page 4-14.
Failure to reduce rotor speed under these conditions can cause rotor failure.
Centrifuges routinely deal with high energy levels and could move suddenly in the unlikely event of rotor failure.
During centrifuge operation, never lean on or move the centrifuge, keep the surrounding area clear of objects (including
all hazardous materials), and do not work on top of or next to the centrifuge.
Do not attempt to open the chamber door when the rotor is spinning; never override or otherwise disable any of the
safety systems of the centrifuge.
CAUTION
Do not run or precool/preheat a rotor at the critical speed, as this will have a detrimental effect on centrifuge component
life. See Chapter 4, Rotor Temperature Equilibration, page 4-13.
Do not operate the centrifuge with a rotor out of balance. To do so can cause damage to the centrifuge drive assembly.
Do not operate centrifuge without a rotor properly installed and locked to the drive, and the rotor cover (if any) must
be properly installed. See rotor instruction manual.
Locate the centrifuge on a level floor to avoid rotor imbalance during operation.
The centrifuge can be damaged if connected to the wrong voltage. Check the voltage before plugging the centrifuge
into a power source. Thermo is not responsible for incorrect installation.
Always maintain the centrifuge in the recommended manner. See Chapter 5, Maintenance.
!
!

Table of Contents SORVALL®Centrifuges
Table of Contents
iv
Page
Safety Information Page iii
Chapter 1. INTRODUCTION & DESCRIPTION
Centrifuge Description .............................................................. 1-1
Centrifuge Specifications .......................................................... 1-4
Parts Supplied ............................................................................ 1-5
Optional Computer Interface Package ...................................... 1-6
Chapter 2. INSTALLATION
Inspection .................................................................................. 2-1
Electrical Requirements ............................................................ 2-1
Location ..................................................................................... 2-2
Installation ................................................................................. 2-3
Chapter 3. CONTROLS, INDICATORS,
and DISPLAYS
RUN Display .................................................................................... 3-2
SET Display .............................................................................. 3-3
HOME Screen ...................................................................... 3-3
Main POWER and KEYPAD LOCK ........................................ 3-4
Primary Function Keys and HOME Screen Fields ................... 3-5
MENU Key and OPTIONS ....................................................... 3-8
Numeric Keypad ........................................................................ 3-12
START and STOP Keys ............................................................ 3-13
SET Display Advisory Messages .............................................. 3-14
Problem Conditions .............................................................. 3-14
Terminal Conditions ............................................................. 3-18
Chapter 4. OPERATION
Turning the Centrifuge ON ....................................................... 4-1
Rotor Installation, Loading, and Balancing .............................. 4-2
Normal Operation ...................................................................... 4-2
Programmed Operation ............................................................. 4-4
Using Advanced Features (Options).......................................... 4-6
Temperature Control ................................................................. 4-12
Rotor Temperature Equilibration .............................................. 4-13

RC12 BP™ Table of Contents
v
v/vi
Page
Running Hazardous Material..................................................... 4-14
Reducing Speed for Rotor Compartment Loads
in Excess of Design Mass ..................................................... 4-14
Chapter 5. MAINTENANCE
Inspection and Cleaning ............................................................ 5-1
Lubrication ................................................................................ 5-2
Customer Control Inspection .................................................... 5-3
Emergency Sample Recovery .................................................... 5-5
Parts Ordering Information ....................................................... 5-6
Service Decontamination Policy ............................................... 5-7
APPENDIX
Warranty
Decontamination Certificates
List of Illustrations
Figure Page
1-1. Parts Location and Identification ................................. 1-2
2-1. RC12BP™ Electrical Requirements ............................ 2-2
2-2. Centrifuge Dimensions................................................. 2-3
2-3. Front Locking Stabilizer Adjustment ........................... 2-4
3-1. Control Panel and Displays .......................................... 3-1
4-1. Advanced Feature Option Screens ............................... 4-7
5-2. Location of Mechanical Door Override ....................... 5-5
List of Tables
Table Page
4-1. Rotor Information ........................................................ 4-2

Introduction & Description SORVALL®Centrifuges

RC12 BP™ Introduction & Description
1-1
Chapter 1: INTRODUCTION & DESCRIPTION
This manual contains information required to operate and maintain the SORVALL®RC12BP™ High-
Capacity Lowspeed Refrigerated Centrifuge. If you require additional information regarding operation or
maintenance, please contact Thermo for assistance. In the United States, call toll-free 1-800-522-7746.
Outside the United States, contact your local representative for SORVALL®products.
* Speed in revolutions per minute (rpm) is related to angular velocity, ω , according to the following:
ω = (rpm) = (rpm) (0.10472)
Where ω = rad/s. All further references in this manual to speed will be designated as rpm.
Centrifuge Description
The SORVALL®RC12BP™ is a microprocessor controlled, high-
capacity lowspeed refrigerated centrifuge designed for use in regu-
lated environments (such as those found in blood banking, biotech-
nology, or pharmaceutical arenas). The control panel, designed to be
easy to use and easy to clean, allows simple input through a positive-
feedback keypad with visual verification of set parameters and current
run conditions. The control panel also prompts users for correct entry
and displays user messages. The control panel introduces automation
of quality control runs, an optional computer interface package
enables automatic, on-line, quality control run and production run
data logging.
The RC12BP™ operates at speeds* up to 4700 rpm, and is capable of
producing relative centrifugal force up to 7333g. It uses a balanced,
high-torque brushless dc motor designed to deliver optimal
performance with smooth, quiet operation over its full speed range,
with long bearing life. Advanced capabilities of this motor offer
precise control of acceleration and deceleration, regardless of rotor
load, for exceptional run reproducibility. Directly connected to the
motor is a heavy-duty gyro-action drive with a square spindle that
accepts the SORVALL®H-12000 high-capacity swinging bucket
rotor. A viewing port in the chamber door permits speed confirmation
using an optical tachometer.
Precise temperature control is made possible by a refrigeration system
that is capable of delivering both cooling and heating. The high-
capacity system is charged with environmentally-friendly CFC-free
refrigerant. The microprocessor-controlled system consists of a low-
temperature evaporator, a hermetically-sealed thermally-protected
compressor, and a fan-cooled finned condenser.
2π
60
()

Introduction & Description SORVALL®Centrifuges
1-2
The RC12BP™ has the following safety features: a protective armor
plate steel guard within the cabinet; automatic shutoff of the drive
motor for overspeed protection; circuit breakers on the main power
and the control panel circuits; and a door interlock which prevents
starting the drive while the chamber door is open, or opening the door
while the rotor is in motion.
Figure 1-1 identifies and locates parts of the RC12BP™.
Specific RC12BP™ features include:
• An optional Network Computer Interface Package, which in-
cludes WatchLog Network™ software, allows automatic com-
puterized logging of centrifuge QC RUN and production run data
via RS485/RS232 communication hardware.
• QC RUN feature allows simple, automatic speed/temperature
verification (optional Computer Interface Package required to
record and print run data).
Figure 1-1. Parts Location and Identification

RC12 BP™ Introduction & Description
1-3
• A user-friendly, easy to clean control panel with an interactive
backlit LCD SET display that prompts appropriate input and
displays advisory messages, option selection indicators, and a
separate, large LED RUN display for across-the-room viewing.
• Programming capability allows saving (to a battery backed-up
memory) up to 9 sets of run parameters plus 6 step run se-
quences, allowing simple recall and error-free run reproducibil-
ity. The SAVE RUN sequence alerts users before overwriting
programs, to eliminate inadvertent loss. A convenient RECALL
key allows access to saved parameters for selection or reference.
• STEP RUN capability allows the linking-together of up to three
sets of run parameters to automatically perform innovative step
run protocols. The step run sequences may be saved in program
memory for future use.
• KEYPAD LOCK, a 3-position keyswitch with a removable key,
that is designed to limit control panel access. Besides allowing
full functionality, the keyswitch can be set so that run parameters
cannot be changed, or so that only parameters from saved
programs may be run – in either case, greatly reducing the chance
for operator error or unauthorized changes.
• Run duration controlled by TIME (minutes:seconds), by HOLD
(for continuous runs), or by Accumulated Centrifugal Effect™
(ACE). Because rotor load differences, fluctuations in voltage, or
slight mechanical differences affect how quickly centrifuges
reach set speed, ACE calculates the effect of speed in relation to
time, and adjusts run duration to account for differences in
acceleration, thereby improving separation consistency and run
reproducibility – run after run, from centrifuge to centrifuge.
• Rotor SPEED controlled by RPM (revolutions per minute), or by
the RCF (relative centrifugal force, or g-force).
• SLOW START chooses gentle acceleration from 0 to 250 rpm (at
250 rpm, acceleration transitions to the normal, maximum rate),
with the slow start rate defined by the selection of one of ten
different acceleration profiles.
• SLOW STOP chooses gentle deceleration from 500 to 0 rpm
(normal braking from set speed transitions to a more gradual rate
at 500 rpm), with the rate defined by selection of one of ten
different braking profiles.

Introduction & Description SORVALL®Centrifuges
1-4
NOTE Selecting BRAKE OFF will affect SLOW STOP.
• BRAKE OFF deactivates normal braking for a coasting stop
from a user-specified transition speed.
• Automatic sample temperature calculation considers the run
speed, run time, set temperature and measured chamber tempera-
ture to estimate and maintain sample temperature.
• Automatic self-test performed by the microcomputer each time
the centrifuge power is turned on, to ensure proper performance.
• Automatic diagnostics, so that if a system malfunction occurs, a
message appears in the SET display to alert you of the condition.
Centrifuge Specifications
Speed
Maximum Selectable Speed 4700 rpm
Maximum Relative Centrifugal Force 7333 g
Speed Control Accuracy ±1% or 20 rpm,
whichever is greater
Time
Maximum Selectable Time 99 minutes, 99 seconds
(or HOLD for indefinite
length of time, timed up
to 300:00)
Maximum Selectable ACE
(Accumulated Centrifugal Effect™) 9.99 x 1030 (∫ω2dt, input
as 9.99e30)
Temperature
Temperature Selection Range –10°C to 40°C
Temperature Control Accuracy sample temperature
controlled within 2°C
of set temperature*
Overtemperature Alert Maximum allowable
temperature settable to
within 2°C of set temp
Maximum Noise Level < 65 dB**
Maximum Average Heat Output 5.3 kW
* With sample, rotor, and chamber temperatures equal to SET temperature at the start of the run, or, during a run, after those components reach
equilibrium. Control range is reduced if run speed/ run time/set temperature/ambient temperature variables combine to create an extreme condition
beyond the temperature control system capacity.
** Measured 3 feet from the front panel at a height of four feet using an H-12000 rotor at its top speed of 4700 rpm.

RC12 BP™ Introduction & Description
1-5
Weight (uncrated, without rotor) 517 kg (1139 lb)
Dimensions
Width 83.8 cm (33 inch)
Depth 106.7 cm (42 inch)
Height, top of control console 112.8 cm (44.4 inch)
Length, power cord (minimum) 244 cm (96 inch)
Other
Depth, back of door to back panel 21.8 cm (8.6 inch)
Height, top of open door 170.4 cm (67.1 inch)
Height, rotor installation lift-over90.2 cm (35.5 inch)
Diameter,chamber opening 66.8 cm (26.3 inch)
Supply Power Requirements
Supply Configurations (AC) 200 V, 60 Hz, 1Ø
208 V, 60 Hz, 1Ø
220 V, 60 Hz, 1Ø
230 V, 60 Hz, 1Ø
240 V, 60 Hz, 1Ø
200 V, 50 Hz, 1Ø
220 V, 50 Hz, 1Ø
230 V, 50 Hz, 1Ø (CE)
230 V, 50 Hz, 3Ø (CE)
240 V, 50 Hz, 1Ø
Recommended Supply Current
Single Phase 50 A
Polyphase 32 A/phase
SupplyPower Receptacle
Standard NEMA 6-50R
230 V, 50 Hz, 1Ø CEE-17 (63A, 2-pole
and earth, 1Ø)
230 V, 50 Hz, 3Ø CEE-17 (32A, 3-pole
neutral and earth, 3Ø)
Parts Supplied
Parts supplied with your RC12BP™ Centrifuge include:
77203 Operating Instructions Manual, RC12BP™
77204 Condensed Operating Instructions, RC12BP™
56418 Program Log Pad, RC3BP™ & RC12BP™
68025 Wrench, Open-End, 9/16-inch
22001 Preinstallation Kit (supplied separately)
Refer to Table 4-1 (on page 4-2), for rotor information. For more
information, refer to a current SORVALL®Product Guide, or
contact Thermo or your local representativefor SORVALL®
products.

Introduction & Description SORVALL®Centrifuges
1-6
Optional Computer Interface Package
An optional Network Computer Interface Package (Catalog No.
77017 for 100-120Vac; Catalog No. 77018 for 200-240Vac) is
available for use of the QC RUN feature and automatic run data
logging. The requirements for the user-supplied computer are:
A dedicated (one per 16 centrifuges) IBM®-compatible
computer with Pentium®processor running at 75 MHz (or
faster) with an available serial communications port. The
computer must have at least 100MB of free hard drive space,
and be running Microsoft®Windows®V3.1 or 3.11 with at
least 8MB RAM, Windows 95®with at least 16MB RAM, or
Windows NT®V4.0 with at least 16MB RAM. The computer
requires a monitor, keyboard, mouse, and printer with
Windows®-compatible driver.
NOTE A dedicated, directly connected computer is required;
WatchLog Network™software will not operate correctly
as a network server-based application. Also, running
other software applications, accessories or utilities while
WatchLog Network™is in use is not advised.
The RC12BP™ Centrifuge is compatible with WatchLog
Network™ systems (revisions below 2.0 require a software
upgrade), but is not compatible with older WatchLog™
software.

RC12 BP™ Installation
Chapter 2: INSTALLATION
This chapter contains instructions to prepare the SORVALL®RC12BP™ centrifuge for operation.
Inspection
1.When you receiveyour centrifuge, carefully inspect it for any
signs of shipping damage. If you find damage, report it
immediately to the transportation company and file a damage
claim, then notify Thermo.
2.Check the parts received against the shipping list; if any parts are
missing, contact Thermo (see back cover).
3.Remove all packing material, and remove any remaining items
from inside the rotor chamber (where this manual was).
Electrical Requirements
NOTE The centrifuge should be connected to an Overvoltage
Category II circuit, and should have a means of power
interruption at a remote location.
The RC12BP™ has specific power requirements and must be con-
nected to the correct supply for proper performance. The nameplate
on the back panel of the cabinet specify a voltage and frequency
corresponding to one of the following AC supplies:
200 V, 50 Hz, 50 A, single Ø 200 V, 60 Hz, 50 A, single Ø
220 V, 50 Hz, 50 A, single Ø 208 V, 60 Hz, 50 A, single Ø
230 V, 50 Hz, 50 A, single Ø 220 V, 60 Hz, 50 A, single Ø
230 V, 50 Hz, 32 A/P, poly Ø 230 V, 60 Hz, 50 A, single Ø
240 V, 50 Hz, 50 A, single Ø 240 V, 60 Hz, 50 A, single Ø
The supply voltage should be checked with a voltmeter, then you
should verify that the voltage indicated on the nameplate on the back
panel is in agreement with the measured line voltage.
If the measured line voltage is not within 10% of the voltage specified
on the nameplate, do not connect the power cord and operate the
centrifuge or damage to the centrifuge may result. Contact Thermo or
your local representative of SORVALL®products to see if the
centrifuge can be modified for your voltage. The centrifuge system
includes a ground wire with 50 A circuit protector on each positive
power lead.
!
C A U T I O N
The centrifuge can be dam-
aged if it is connected to the wrong
voltage. Check the voltage listed on
the nameplate, and measure the volt-
age at the power source before plug-
ging in the power cord. Thermo is not
responsible for incorrect installation.
2-1

Installation SORVALL®Centrifuges
2-2
Single phase RC12BP™ Centrifuges are equipped with a three-wire
cord with three-prong connector to fit a NEMA 6-50P (50A, 2-pole
and earth, 1Ø) receptacle, or, on 230V 50Hz centrifuges, a CEE-17
(63A, 2-pole and earth, 1Ø) receptacle. 230V 50Hz polyphase
RC12BP™ Centrifuges are equipped with a four-wire cord with five-
pin connector to fit a CEE-17 (32A, 3-pole, neutral and earth, 3Ø)
receptacle. This cord may be changed to meet local electrical code
requirements; the green and yellow wire is the ground and must be
connected to the centrifuge frame.
Figure 2-1. RC12BP™ Electrical Requirements
Location
NOTE The RC12 BP™is to be installed in a Pollution Degree 2
environment at an altitude not exceeding 2000 meters
(6560 feet), and is a Class A product not intended for
home use (operation in a domestic environment could
cause radio interference).
Locate the RC12BP™ on a level floor. For the centrifuge to function
properly, ambient temperature and air circulation are very important.
To ensure free air circulation, the centrifuge must be positioned so that
no air vents are blocked, allowing for its physical size (see figure 2-
2) plus an additional 15 cm (6 inches) on each side, and a minimum
of 5 cm (2 inches) behind the centrifuge (10 cm [4 inches] or more is
desired).
Ambient air temperature at the centrifuge air inlets must be between
5°C to 40°C (41°F to 104°F), with relative humidity ≤90% non-
condensing, for the centrifuge to operate. Ideal ambient temperature
to meet all performance specifications is between 20°C to 35°C (68°F
to 95°F), therefore, avoid areas near heat sources (for example,
heating pipes and radiators). Also, avoid close grouping of centri-
fuges or other heat-producing laboratory equipment. Generally, the
cooler the location, the better the operating conditions will be for the
centrifuge.
C A U T I O N
Locate the centrifuge on a
level floor to avoid rotor imbalance
during operation.
!
MEASURED
LINE
VOLTAGE
50 AMP CIRCUIT
PROTECTOR
50 AMP CIRCUIT
PROTECTOR
WALL
OUTLET

RC12 BP™ Installation
2-3
Figure 2-2. Centrifuge Dimensions
Installation
A Preinstallation Kit (Catalog No. 22001) is supplied for UL/CE
compliance. Install the Preinstallation Kit according to instructions
supplied with the kit.
To install the RC12BP™:
1. Position the RC12BP™ in an operating location that satisfies the
criteria specified in the previous Location paragraph. With the
Preinstallation Kit installed, the operating location is so that the
two tabs (under the front edge of the centrifuge) are flush against
and aligned with the preinstalled hold-down brackets.
2. Secure the centrifuge to the brackets by installing a shackle and
a locking bolt (supplied with the kit) through each tab/hold-down
bracket eyelet and tightening.

Installation SORVALL®Centrifuges
2-4
3.By hand, lower the two locking stabilizers in the front of the
centrifuge until they lightly contact the floor. Use the 9/16-inch
wrench (supplied with the centrifuge) to rotate each stabilizer an
additional two revolutions. This will raise the front caster about
3 mm (1/8 inch) off the floor. Check that the centrifuge does not
rock on its four support points, the two front stabilizers and the
two rear casters (see figure 2-3). Read the CAUTION.
4.Be sure the POWER switch is set to "O", then plug in the
centrifuge power cord.
5. Optional: To be certain the centrifuge is working properly, turn
to the Customer Control Inspection paragraph located in Chapter
5, Maintenance, and perform the procedures listed under Speed
Control, Timer,and Temperature Control.
NOTE If the centrifuge is to be connected with the optional
Network Computer Interface Package for automatic qual-
ity control and run logging capability, Thermo or a local
representative for SORVALL®products will install the
package components as described in the WatchLog
Network™User's Manual (supplied in the package).
After the RC12BP™ satisfies the inspection/performance criteria, it
can be considered ready for use.
APPROX. 3 mm
(1/8 inch) OFF THE
FLOOR LOCKING
STABILIZER
(9/16 inch HEX
[≈14 mm])
Figure 2-3. Front Locking Stabilizer Adjustment
C A U T I O N
The locking stabilizers must
be used as explained to lift the front
caster off the floor. The centrifuge
can be damaged if it is operated when
the stabilizers are not properly ad-
justed. After adjusting the stabilizers,
make sure that the centrifuge is rea-
sonably level, and that it does not
rock on three of the four support
points.
!

RC12 BP™ Controls, Indicators, and Displays
Chapter 3: CONTROLS, DISPLAYS
The RC12BP™ controls, displays and indicators have been designed for ease of use – the control panel
(figure 3-1) allows entry with visual verification of set parameters and current conditions, prompts action
if an entry is inappropriate (remains blinking), and communicates status with user messages. An optional
Computer Interface Package allows for automatic, on-line logging of quality control and daily run data.
Figure 3-1. Control Panel and Displays
SET DISPLAY
Displays currently selected ba-
sic run parameters in the HOME
screen, advanced feature
screens (for selection of options
or programming), and user advi-
sory messages.
OPTION INDICATORS
Lights show advanced feature
selection status. If an indicator is
lit, the option is selected.
MENU
Accesses the advanced feature
screens (for selection of options
and programming).
TIME (MIN:SEC / ACE)
During a TIME run, displays remaining run time (min:sec);
during a HOLD run, displays elapsed run time (min:sec);
during an ACE run, displays current Accumulated Centrifugal
Effect™coefficient and exponent (ACE indicator lit).
SPEED (RPM / RCF)
Displays rotor speed (rpm)
or RCF, g force, during a run
(when RCF indicator is lit).
TEMPERATURE (°C)
Displays the current calcu-
lated sample temperature
(°C) during a run.
RUN DISPLAY
PRIMARY FUNCTION KEYS
These keys allow access to the corresponding fields of the SET
display for the specification of new run parameters.
TEMP
Allows changing desired cal-
culated sample temperature.
RECALL
Allows viewing and selecting
programmed parameters.
ROTOR
(Future use) To allow selec-
tion of the rotor to be used.
SPEED
Allows changing desired
speed (rpm) or RCF ( g force).
TIME / HOLD / ACE
Allows changing desired run duration; runs continue until speci-
fied min:sec times out, until STOP is pressed, or until a
specified Accumulated Centrifugal Effect™is achieved.
START
Starts centrifuge run. Indicator
is lit when a run is in progress.
STOP
Stops centrifuge run. Indicator
is lit during deceleration.
NUMERIC KEYPAD
Inputs speed, time, and tem-
perature values; selects
programs and advanced
features (options, program-
ming). CLEAR removes an input
value or a message from the
SET display; +/– toggles
between positive and negative
for temperature value selection.
ENTER
Places input values in memory.
Bypasses advanced features
without selecting or deselecting
them.
and INDICATORS
3-1

Controls, Indicators, and Displays SORVALL®Centrifuges
3-2
RUN Display
The RUN display is to the left of the control panel, and is comprised
of three fields of large red LEDs that indicate the current measured/
calculated conditions during a run:
• The run SPEED (RPM/RCF) field indicates either the current
measured rotor speed (in rpm) or, if RCF is selected (RCF
indicator lit), the relative centrifugal force (or g-force) that is
currently being generated at the maximum radius of the selected
rotor. The rpm values are rounded to 10s above 200 rpm. At run
completion (zero speed, after the door has been unlocked) the
display will show the word "End" until the door is opened.
• The run TIME (MIN:SEC/ACE) field indicates:
– If controlled by TIME, the display counts down from set
time, showing the time remaining (in minutes and seconds)
until the run terminates and deceleration begins,
– If controlled by HOLD (indicated in the control panel SET
display), the display during a run counts up, showing the
time elapsed (expressed in minutes and seconds, up to a
maximum of 300:00) since START was pressed, or
– If controlled by ACE (Accumulated Centrifugal Effect™,
ACE indicator lit), the RUN display shows the current
calculated ACE value (∫ω2dt). When the set ACE value is
reached, the run terminates and decelerates to a stop. The
displayed value continues to calculate the centrifugal effect
during deceleration to zero to show total accumulation.
Monitoring run duration in alternative terms
During a run, if an alternative run duration key is pressed once (for
example, pressing TIME during an ACE run), the RUN display
will change to show an accumulating value in terms of the newly
selected method. The SET display and ACE indicator will not
change, but will continue to show the control method and value
that was in effect when START was pressed. Run duration will be
controlled by the SET display value, regardless of the alternative
value showing in the RUN display. If that same alternative key is
pressed a second time, the SET display will change to show a
flashing value (from the previous run) expressed in that control
method – entry will change duration control to that method and the
RUN display will continue counting based on the new entry.
Pressing START resets the run.
RCF