Thermo Scientific Fisher Scientific Fisherbrand GT1R... User manual

Fisherbrand GT1 Centrifuge
Fisherbrand GT1R Centrifuge
Instruction manual
50156465_a • 05 / 2018
15878722
15868722

IMPORTANT Read this instruction manual. Failure to follow the instructions in this manual can result in
damage to the unit, injury to operating personnel and poor equipment performance.
CAUTION All internal adjustments and maintenance must be performed by qualified service personnel.
Material in this manual is for informational purposes only. The contents and the product it describes are
subject to change without notice. Fisher Scientific makes no representations or warranties with respect to this
manual. In no event shall be held liable for any damages, direct or incidental, arising from or related to the use
of this manual.
HIGHConic™, CLINIConic™, MicroClick™ and Auto-Lock™.
All trademarks are the property of Thermo Fisher Scientific Inc. and its subsidiaries unless otherwise specified.
© 2018 Fisher Scientific Inc. All rights reserved.

Contents
Preface ........................................................................ 1
Items Supplied ......................................................... 1
Intended Use............................................................ 1
Precautions.............................................................. 1
Symbols used on the Centrifuge............................... 2
Technical Specifications............................................... 3
Technical Data ......................................................... 3
Directives, Standards and Guidelines ...................... 4
Mains Supply ........................................................... 4
Rotor Selection ........................................................ 4
Transport and Set Up .................................................. 6
Before Setting Up..................................................... 6
Location................................................................... 6
Transporting............................................................. 6
Leveling.................................................................... 6
Mains Connection .................................................... 7
Storage .................................................................... 7
Shipping................................................................... 7
Control Panel............................................................... 8
Control Panel ........................................................... 8
Keys......................................................................... 8
Operation..................................................................... 9
Switching on the Centrifuge ..................................... 9
Open the Centrifuge Door ........................................ 9
Close the Centrifuge Door ........................................ 9
Rotor Installation ...................................................... 9

Acceleration / Deceleration Rates............................. 10
Programs ................................................................. 12
Centrifugation........................................................... 12
Short-term Centrifugation......................................... 13
Removing the Rotor ................................................. 13
Aerosol-Tight Rotors ................................................ 14
Switch off Centrifuge................................................ 14
System Menu............................................................... 15
Flowchart System Menu........................................... 15
Maintenance and Care................................................. 16
Cleaning Intervals ..................................................... 16
Basics...................................................................... 16
Cleaning................................................................... 16
Disinfection .............................................................. 17
Decontamination ...................................................... 18
Autoclaving .............................................................. 18
Service of Fisher Scientific........................................ 18
Shipping and Disposal.............................................. 19
Troubleshooting........................................................... 20
Mechanical Emergency Door Release ...................... 20
Troubleshooting by Guide ........................................ 21
When to contact Customer Service.......................... 22
Chemical Compatibility Chart ...................................... 23

Centrifuge GT 1 / 1R Preface | 1
Preface
Before starting to use the centrifuge, read through this
instruction manual carefully and follow the instructions.
Failure to follow the instructions and safety information in this
instruction manual will result in the expiration of the sellers
warranty.
Items Supplied
If any parts are missing, contact your nearest Fisher Scientific
representative.
Intended Use
This centrifuge is designed to separate sample mixtures of
different densities like chemicals, environmental samples and
other non-human body samples.
Precautions
Observe the safety instructions. Not following these
instructions can cause damage.
The centrifuge is to be used for its intended use only.
Improper use can cause damages, contamination, and
injuries with fatal consequences.
The centrifuge should be operated by trained specialists only.
In order to ensure safe operation of the Fisherbrand GT 1 / 1R
centrifuge, general safety regulations must be followed. Mind
the regulations in your country.
Set Up Conditions
• Plug the centrifuge only into sockets which have been
properly grounded.
• Turn OFF the centrifuge at the main switch. The mains
plug must be freely accessible at all times.
Press the STOP key to shut down the centrifuge.
Pull out the power supply plug or disconnect the power
supply in an emergency.
• As safety zone maintain a clear radius of at least 30 cm
around the centrifuge.
Do not place any dangerous substances within this
security zone.
• Set up in a well-ventilated environment, on a horizontally
leveled and rigid surface with adequate load-bearing
capacity.
Preparation
• It is the obligation of the operator to make sure, that the
proper protective clothing is used. Mind the “Laboratory
Biosafety Manual” of the World Health Organization
(WHO) and the regulations in your country.
• Do not make any changes to the mechanical
components of the rotor.
• Do not touch the electronic components of the centrifuge
nor alter any electronic or mechanical components.
• Use only with rotors which have been properly installed.
Follow the instructions on the Thermo Scientific™
Auto-Lock™ rotor exchange in section Rotor
Installation.
• Do not use rotors, buckets or accessories which show
any signs of removed protective coating, corrosion or
cracks. Contact customer service for further advice or
inspections.
• Use only with rotors which have been loaded properly.
• Never overload the rotor.
• Always balance the samples.
• Use only rotors and accessories for this centrifuge which
have been approved by Fisher Scientific. Exceptions to
this rule are commercially available glass or plastic
centrifuge labware, provided they have been designed to
fit rotor or adapter cavities and are approved for the
speed or the RCF value of the rotor.
• Make sure the rotor is locked properly into place before
operating the centrifuge.
Items Quantity Check
Centrifuge GT 1 / 1R 1
Power supply cable 1
Instruction manual 1
CD 1

2 | Preface Centrifuge GT 1 / 1R
• Implement measures which ensure that no one can
approach the centrifuge for longer than absolutely
necessary while it is running.
• If used for foodstuffs machinery, for cosmetics or
pharmaceutical products, only use closed or aerosol-
tight containers for centrifugation.
Hazardous Substances
• Especially when working with corrosive samples (salt
solutions, acids, bases), the accessory parts and vessel
have to be cleaned thoroughly.
• Do not centrifuge explosive or flammable materials or
substances.
• The centrifuge is neither inert nor protected against
explosion. Never use the centrifuge in an explosion-prone
environment.
• Do not centrifuge toxic or radioactive materials or any
pathogenic micro-organisms without suitable safety
precautions.
If centrifuging any hazardous materials mind the “Laboratory
Biosafety Manual” of the World Health Organization (WHO)
and any local regulations. When centrifuging microbiological
samples from the Risk Group II (according to the “Laboratory
Biosafety Manual” of the World Health Organization (WHO)),
aerosol-tight biological seals have to be used. Look on the
internet page of the World Health Organization (www.who.int)
for the “Laboratory Biosafety Manual”.
For materials in a higher risk group, extra safety measures
have to be taken.
• If toxins or pathogenic substances have contaminated
the centrifuge or its parts, appropriate disinfection
measures have to be taken (refer to the section
Disinfection).
• Extreme care should be taken with highly corrosive
substances which can cause damage and impair the
mechanical stability of the rotor. These should only be
centrifuged in fully sealed tubes.
• If a hazardous situation occurs, turn off the power supply
to the centrifuge and leave the area immediately.
Operating
• Never use the centrifuge if parts of its cover panels are
damaged or missing.
• Never start the centrifuge when the centrifuge door is
open.
• Do not move the centrifuge while it is running.
• Do not lean on the centrifuge.
• Do not place anything on top of the centrifuge during a
run.
• Never open the centrifuge door until the rotor has come
to a complete stop and this has been confirmed in the
display.
• The emergency door release may be used in
emergencies only to recover the samples from the
centrifuge, e.g. during a power failure (refer to the section
Mechanical Emergency Door Release).
Do not open the centrifuge, while it is running.
In any case of severe mechanical failure, such as rotor or
bucket crash, the centrifuge is not aerosol-tight.
In case of rotor failure the centrifuge can be damaged. Leave
the room. Inform customer service.
Maintenance
The centrifuge housing is not to be opened by the operator.
Symbols used on the
Centrifuge
This symbol refers to general hazards.
CAUTION means that material damage
could occur.
WARNING means that injuries or material
damage or contamination could occur.
This symbol refers to biological hazards.
Observe the information contained in the
instruction manual to keep yourself and
your environment safe.
This symbol refers to information on
hazards, described within the manual.
This symbol demands to disconnect mains
before transporting or servicing the
centrifuge.
This symbol demands to check, if the rotor
is installed correct by lifting it slightly at the
handle. Refer to the section Rotor
Installation.
This symbol refers to electrical hazards.

Centrifuge GT 1 / 1R Technical Specifications | 3
Technical Specifications
Technical Data
The technical data of the Fisherbrand GT 1 / 1R Centrifuge is listed in the following table.
1Front Side Measurement, 1 m in front of the instrument at 1.6 m height
Table 1. Technical Data Fisherbrand GT 1 / 1R Centrifuge
Feature GT 1 GT 1R
Environmental conditions
Use in interior spaces
Altitudes of up to 2
000 m above sea level
Max. relative humidity 80 % up to 31 °C; decreasing linearly up to
50 % relative humidity at 40 °C.
Environmental Conditions during Storage and
Shipping
Temperature: -10 °C to +50 °C
Humidity: 15 % to 85 %
Temperature: -10 °C to +50 °C
Humidity: 15 % to 85 %
Permissible Ambient Temperature during
Operation +2 °C to +35 °C +2 °C to +35 °C
Heat Dissipation1
Ventilated Refrigerated
230 V 230 V
1 060 Btu/h; 1 170 Btu/h;
Overvoltage Category II II
Pollution Degree 2 2
IP 20 20
Running Time 99 h 59 min 50 sec, hold 99 h 59 min 50 sec, hold
Maximum Speed nmax 16
000 rpm 17 850 rpm
Minimum Speed nmin 300 rpm 300 rpm
Maximum RCF Value at nmax 24
328 x g 30 279 x g
Noise Level at Maximum Speed1
< 58 dB (A) (measured with a
TX-150 rotor); < 61 dB (A)
(measured with a MicroClick™
24x2 rotor)
< 56 dB (A) (measured with a TX-150
rotor)
Maximum Kinetic Energy 8.12 kJ 10.1 kJ
Temperature Setting Range -10 °C to +40 °C
Dimensions
Height (open door / closed door)
Width
Depth
660 mm / 310 mm
370 mm
490 mm
700 mm / 320 mm
460 mm
670 mm
Weight without rotor 35 kg 74 kg

4 | Technical Specifications Centrifuge GT 1 / 1R
Directives, Standards and Guidelines
Mains Supply
The following table contains an overview of the electrical connection data. This data is to be taken into consideration, when
selecting the mains connection socket.
Rotor Selection
Various rotors are available to choose from the following:
Table 2. Directives, Standards and Guidelines
Region Directive Standard
Europe
220-230 V
50 / 60 Hz
2006/42/EC Machinery
2014/35/EU Low Voltage
(Protective Goals)
2014/30/EC Electromagnetic Compatibility (EMC)
2011/65/EC RoHS
Directive on the Restriction of the use of certain Hazardous
Substances in electrical and electronic equipment
EN 61010-1, 2nd Edition
IEC 61010-2-020, 2nd Edition
EN 61326-1
EN ISO 14971
EN ISO 9001
Unit Mains
Voltage Frequency Rated Current
Power
Consumption
Equipment
Fuse
Building
Fuse
Fisherbrand GT 1 Centrifuge 230 V 50 / 60 Hz 2 A 310 W 5 AT 16 AT
Fisherbrand GT 1R Centrifuge 230 V 50 / 60 Hz 4 A 750 W 15 AT 16 AT
75005701 TX-150 swinging bucket rotor
75005702 TX-150 round buckets
75005703 TX-150 50mL conical buckets
75005704 TX100S clinical swinging bucket rotor with sealed carriers
75005705 TX100 clinical swinging bucket rotor with carriers
75005706 M10 microplate swinging bucket rotor
75005723 M10 buckets
75005721 M10 sealed buckets
75005600 MT12 microtube swinging bucket rotor
75005709 HIGHConic™ III fixed angle rotor
75003623 CLINIConic™ fixed angle rotor

Centrifuge GT 1 / 1R Technical Specifications | 5
For further details on rotor use and safety, additional accessories, adapters and spare parts, refer to the rotor manual.
For more information visit our website at http://www.thermofisher.com/centrifuges
75005715 MicroClick™ 24x2 microtube rotor
75005719 MicroClick™ 30x2 microtube rotor
75005720 8x8 PCR Strip rotor
75003694 8 x 50 mL Individually Sealed rotor (only usable in the Centrifuge GT 1R)
75005765 MicroClick™ 18x5 microtube rotor (only usable in the Centrifuge GT 1R)
75003602 Microliter 48x2 microtube rotor

6 | Transport and Set Up Centrifuge GT 1 / 1R
Transport and Set Up
Before Setting Up
1. Check the centrifuge and the packaging for any shipping
damage. Inform the shipping company and Fisher
Scientific immediately if any damage is discovered.
2. Remove the packaging.
3. Check, if the items supplied are complete. Refer to the
section Items Supplied. If the items supplied are
incomplete, please contact Fisher Scientific.
Location
The centrifuge is only to be operated indoors.
The set-up location must fulfill the following requirements:
• A safety zone of at least 30 cm must be maintained
around the centrifuge. People and hazardous substances
must be kept out of this safety zone while centrifuging.
• The supporting structure must be stable and free of
resonance.
• The supporting structure must be suitable for horizontal
setup of the centrifuge.
• The centrifuge is not to be exposed to heat and strong
sunlight.
• The set-up location must be well-ventilated at all times.
Transporting
• To prevent possible injuries, at least two people should lift
and carry the centrifuge by holding it at the bottom from
opposite sides.
Figure 1. Lifting the centrifuge at both sides.
• Transport the centrifuge and accessories upright within
the associated packaging, if possible.
Note: Store the original centrifuge packaging. Contact a
shipping company or the customer service for the transport.
Always remove the rotor before moving the centrifuge. If you
do not remove the rotor you might damage the centrifuge
drive or centrifuge spindle.
Leveling
The centrifuge must be placed on horizontal and level
supporting structures or benching.
Horizontal level must be checked when moving the centrifuge
to a new location.
WARNING: UV rays reduce the stability of
plastics.
Do not subject the centrifuge, rotors and plastic
accessories to direct sunlight.
WARNING: Always lift the centrifuge from both
sides. Never lift the centrifuge by its front panel,
its back panel or at its door.
Always remove the rotor before moving the
centrifuge.
CAUTION: If the centrifuge isn’t leveled,
imbalances can occur and the centrifuge can be
damaged.
Do not place anything under the centrifuge feet to
level the centrifuge.

Centrifuge GT 1 / 1R Transport and Set Up | 7
Mains Connection
Note: Plug the centrifuge into grounded electrical sockets
only.
1. Turn off the power supply switch.
Figure 2. Power supply switch on the backside of
the Centrifuge GT 1
Figure 3. Power supply switch on the right side of
the Centrifuge GT 1R
2. Check whether the cable complies with the safety
standards of your country.
3. Make sure that the voltage and frequency correspond to
the figures on the rating plate.
4. Establish the connection to the power supply with the
connecting cable.
Storage
• Before storing the centrifuge and the accessories, it must
be cleaned and if necessary disinfected and
decontaminated.
Centrifuge, rotors, buckets and accessories have to be
thoroughly dried before storage.
• Store the centrifuge in a clean, dust-free location.
• Be sure to place the centrifuge on its feet.
• Avoid direct sunlight.
Shipping
Before shipping the centrifuge please bear the following in
mind:
• The centrifuge must be clean and decontaminated.
• The decontamination must be confirmed in a
decontamination certificate. Contact customer service for
more details.
WARNING: When removing the centrifuge and
accessories from use if necessary clean, disinfect
or decontaminate the entire system. In doubt
contact the Fisher Scientific customer service.
WARNING: Before shipping the centrifuge and
accessories you have to clean and if necessary
disinfect or decontaminate the entire system. In
doubt contact the Fisher Scientific customer
service.

8 | ControlPanel Centrifuge GT 1 / 1R
Control Panel
Control Panel
The control panel contains the keys and displays of the centrifuge (only the power switch is located on the right side
(Centrifuge GT 1R) or on the backside (Centrifuge GT 1) of the device).
Keys
The keys allow user intervention for controlling the operating mode as follows:
PULSE
START STOP
OPEN
SPEED TIME
3
12
TEMP
X G
RPM
SOFT
ACC
SOFT
DEC
Open key
Changing the display mode
Speed / RCF value
Start key Stop key
Program Keys Speed / RCF value Running Time
Temperature
Acceleration / Deceleration Profiles
Pulse Key
Status
Prewarming or Precooling
Modify the displayed value
Key Display contents
Start Key Press the START key to start a centrifugation run or to accept the current settings
Stop Key Press the STOP key to manually end the centrifugation run
Open Key
Press the OPEN key to activate the automatic door release (possible only when
device is switched on and when the rotor is fully stopped). Refer to the section
Mechanical Emergency Door Release
Pulse Key
Press the PULSE key to immediately start the centrifugation run and accelerate up
to the maximal permissible end speed (depending on the used rotor). Releasing the
key initiates a stopping process at the highest braking curves
Arrow Keys Use these keys in order to modify the displayed value
Snowflake Key Press the snow symbol key for prewarming or precooling the centrifuge
Toggle Key Use the Change key to change the display mode (Speed / RCF value)

Centrifuge GT 1 / 1R Operation | 9
Operation
Note: Only display pictures of the Centrifuge GT 1R are
shown. The display of the Centrifuge GT 1 is the same,
except missing the details for temperature.
Switching on the
Centrifuge
1. Turn on the power switch on the back of the device.
The device performs a self-check of its software.
a. When the centrifuge door is closed the display
shows:
The speed and time displays read 0. The current
temperature inside the rotor chamber is displayed.
b. When the centrifuge door is open the display shows:
The speed and time displays show the preset values;
the set temperature inside the rotor chamber is
displayed.
Open the Centrifuge Door
Press the OPEN key.
Close the Centrifuge Door
Ensure that the centrifuge platform is clear from objects.
Keep hands and objects well clear of the underside and side
of the centrifuge door when closing.
Close the centrifuge door by pressing down on it lightly in the
middle or on both sides of it. The centrifuge door mechanism
will click and lock in place. Lids should not be slammed as
excessive force may cause damage or disrupt samples.
Note: The centrifuge door should audibly click into place.
Rotor Installation
The approved rotors for the Centrifuge GT 1 / 1R are listed in
section Rotor Selection. Use only the rotors from this list in
the centrifuge.Permitted accessories are listed in the rotor
manuals.
The centrifuge is equipped with an Auto-Lock locking system.
This system is used to automatically lock the rotor to the
centrifuge spindle. The rotor does not have to be bolted on to
the centrifuge spindle.
Proceed as follows:
1. Open the centrifuge door and if necessary remove any
dust, foreign objects or residue from the chamber.
Auto-Lock and O-Ring must be clean and undamaged.
Figure 4. Auto-Lock
WARNING: Do not reach into the gap between
the centrifuge door and the housing.
Use the emergency release only for malfunctions
and power failures (refer to the section
Mechanical Emergency Door Release).
CAUTION: Unapproved or incorrectly combined
accessories can cause serious damage to the
centrifuge.
Auto-Lock
O-Ring

10 | Operation Centrifuge GT 1 / 1R
2. Place the rotor over the centrifuge spindle and let it slide
slowly down the centrifuge spindle. If necessary a light
push may be required to ensure connection.
The rotor clicks automatically into place.
3. Check if the rotor is properly installed by lifting it slightly
on the handle or from beneath the rotor. If the rotor can
be pulled up, then it must be reconnected to the
centrifuge spindle.
4. If available close the rotor with the rotor lid.
5. Check the according rotor manual for further details on
requirements and methods of closure.
6. Close the centrifuge door.
Acceleration /
Deceleration Rates
The Fisherbrand 1 / 1R Centrifuge offers you 2 profiles:
standard and soft. The setting is displayed above the
ACCELERATION / DECELERATION key .
Press the ACCELERATION / DECELERATION key to
cycle through and set the available profiles. The LEDs show
the chosen settings. The last profile is saved, if you restart the
centrifuge.
Pre-Selecting Speed / RCF
RPM stands for Revolutions Per Minute.
RCF stands for Relative Centrifugal Force and allows better
transfer of protocols between centrifuges and rotors of
differing size.
Ensure that the rpm or RCF is correctly set.
1. Press the TOGGLE key below the SPEED display to
cycle through the RPM / RCF selection.
The LED light will indicate if “RPM” or “RCF” is selected.
RPM / RCF can be viewed during a run by pressing the
toggle button.
2. Enter the desired value by holding the arrow keys
below SPEED in the corresponding direction, until the
desired value shows. First RPM / RCF will change in
steps of 10. Holding a key pressed will change the
runtime then in steps of 100 and then in steps of 1000.
Press the START key to accept or wait 4 seconds
until the centrifuge automatically saves the chosen
values. Moving to setting time or temperature also
automatically stores the set value.
Note: The minimum motor speed is 300 rpm. Any extremely
low rcf settings will be automatically increased to the
minimum rcf at 300 rpm.
Explanation of RCF-Value
The Relative Centrifugal Force (RCF) is given as a multiple of
the force of gravity g. It is a unit less numerical value which is
used to compare the separation or sedimentation capacity of
various centrifuges, since it is independent of the type of
device. Only the centrifuging radius and the speed are used
for its calculation:
CAUTION: Do not force the rotor onto the
centrifuge spindle.
If the rotor is very light, then it may be necessary
to press it onto the centrifuge spindle with little
pressure.
WARNING: If the rotor cannot be properly locked
in place after several attempts, then the
Auto-Lock is defective and you are not permitted
to operate the rotor.
Check for any damage to the rotor and the
spindle. Damaged rotors must not be used.
Keep the centrifuge spindle area of the rotor clear
of objects.
If in doubt, call Fisher Scientific Customer Service.
CAUTION: Check that the rotor is properly locked
on the centrifuge spindle before each use by
pulling it at its handle.
CAUTION: Be sure to check all sealing before
starting any aeorsol-tight applications.
See the information in the rotor instruction
manual.
LED Light
Settings Description
OFF Acceleration and Deceleration
with max. Power = Standard
SOFT ACC Acceleration = Soft
SOFT DEC Deceleration = Soft
SOFT ACC and SOFT
DEC
Acceleration and
Deceleration = Soft

Centrifuge GT 1 / 1R Operation | 11
r = centrifuging radius in cm
n = rotational speed in rpm
The maximum RCF value is related to the maximum radius of
the tube opening.
Remember that this value is reduced depending on the tubes
and adapters used.
This can be accounted for in the calculation above if required.
Running Time Pre-Selection
1. Press the key. This allows to change the set time
using the arrow keys until the desired time is displayed.
First runtime will change in steps of 10 second. Holding a
key pressed will change the runtime by steps of single
minutes, followed by steps of 10 minutes, followed by
steps of single hours and at least by steps of 10 hours.
This will continue until the limit of 99 hours and 59
minutes is reached.
Enter the desired runtime in hh:mm or mm:ss.
2. Press the START key to accept or wait 4 seconds
until the centrifuge automatically saves the chosen
values. Moving to setting speed / RCF or temperature
also automatically stores the set value.
Continuous Operation
1. Press either arrow keys until HOLD is displayed.
2. Press the START key to accept or wait 4 seconds
until the centrifuge automatically saves the chosen
values. During continuous operation, the centrifuge will
continue running until you stop it manually.
Preselecting the Temperature
You can preselect temperatures between -10 °C and +40 °C.
To set the temperature, proceed as follows:
1. Press the TEMPERATURE arrow keys. This allows
to change the set temperature using the arrow keys until
the desired temperature is displayed. Temperature will
change in steps of single degrees celsius.
The temperature cannot be adapted until the rotor has been
positively identified; the speed display will then show END.
When the rotor is not recognized (centrifuge door closed and
START key not yet pressed, speed display “0”), the
centrifuge ensures that the sample cannot freeze regardless
of the rotor being used.
Pre-warming or Pre-cooling
the Centrifuge
Ensure the rotor, buckets and accessories are correctly in
place and securely attached in the chamber. For setting the
pretemp value for the centrifuge proceed as follows:
1. Press the SNOWFLAKE key in order to open the
temperature selection menu.
The display shows the message “PreTemp”.
2. Enter the desired value by pressing the key
repeatedly, until the desired value shows.
3. Press the START key .
4. The centrifuge motor will start and a specific speed
defined by the rotor. This improves air circulation within
the chamber, resulting in improved temperature control
throughout the chamber and rotor. The rotor chamber is
cooled down or heated up to the preset temperature.
5. When the set temperature is reached, the centrifuge will
beep and continue to hold the temperature.
6. Press the STOP key to end the pre-warming or pre-
cooling.The display shows the current temperature inside
the rotor chamber.
RCF 11.18 n
1000
-------------


2r××=

12 | Operation Centrifuge GT 1 / 1R
Programs
The Fisherbrand 1 Centrifuge is able to save up to 4
programs; the Fisherbrand GT 1R Centrifuge is able to save
up to 99 programs. It is only possible to save a program if the
centrifuge is in standstill. Loading or saving of programs is not
possible if the centrifuge is spinning.
Saving a Program
Modify the speed, time and temperature to the desired
setting.
For Direct Access Programs 1, 2, 3:
Press and hold the desired program key 1, 2 or 3 for 4
seconds.
For Programs 4-99:
1. Press the folder key for 4 seconds. Use the SPEED arrow
key , to scroll through until the desired number is
selected.
2. Press the START key to confirm.
3. The program can now be named using up to 12
alphanumeric characters. Use the SPEED arrow key
to scroll through the characters. Use the TIME arrow keys
to move left or right.
4. Press the START key to confirm and save the
program.
To abort at any point press the STOP key .
Selecting a Program
For Direct Access Programs 1, 2, 3
Press one of the direct access program keys 1, 2, 3.
For Programs 4-99
Press the folder key. Use the SPEED arrow keys to scroll
through until the desired program is selected.
Centrifugation
Maximum Loading
Rotors can run at high speeds. Each rotor is specifically
designed to run at its maximum speed with a defined load.
For further details refer to the rotor manual supplied with the
rotor.
The rotors are designed to work with substance mixtures with
a density of up to 1.2 g/ml. Above this density or if total load is
above the maximum weight the following steps should be
taken:
• Reduce the fill level.
• Reduce the speed.
Use the formula:
nadm = admissible speed
nmax = maximum speed
Once the rotor has been properly installed, the main switch
turned on and the centrifuge door closed, you may start
centrifuging.
Use of Tubes and Consumables
Care should be taken to ensure that the tubes and bottles
used in the centrifuge are:
• Rated to or above the selected rcf to be spun at
• They are being used at or above there minimum fill
volume
• They are not being used above their design life (age or
number of runs)
• They are inspected for damage
Refer to the manufacturers data sheets for further information.
Starting Centrifuge Program
Press the START key on the control panel. The centrifuge
accelerates to the pre-set speed with the time display active.
If the speed setting is higher than the maximum permissible
speed or RCF-value for the particular rotor, then after starting
the display will show the message “Limit” – followed by the
maximum RPM- or RCF-value of the inserted rotor once the
centrifuge has been started.
Within 10 seconds of the error message it is possible to
accept the highest RPM / RCF of the inserted rotor by
pressing START key . The centrifuge will then continue run
for the set time and at the set temperature. If no action is
taken within 10 seconds, the centrifuge will continue to
decelerate. A new speed setting can be selected using the
SPEED arrow keys and has to be confirmed by pressing
the START key .
WARNING: Injuries with fatal consequences can
occur when using substance mixtures with a
higher density than 1.2 g/cm3at maximum speed.

Centrifuge GT 1 / 1R Operation | 13
If no action is taken, the centrifuge will decelerate until stop,
then the lid should be opened and the rotor checked.
Imbalance Indicator
The centrifuge is fitted with an imbalance detector, to ensure
safety. If an imbalance is detected at speeds higher than
approx. 300 rpm an error message “Imbalance load” will be
displayed.
Imbalance at high speed may indicate a tube breakage or leak
or rotor crash. Therefore additional care should be taken
depending on the samples loaded.
The run will terminate.
Once the run is complete, the rotor and load should be
checked, ensuring that all buckets are greased and can swing
free and that the tubes are balanced by following the rotor
instruction manual. For information on troubleshooting, refer
to the section Troubleshooting by Guide.
Stopping the Centrifugation
Run
With Pre-Set Running Time
If the run time is preset, the centrifuge will run at the selected
speed until the desired run time is reached. It will then
automatically decelerate and stop. Once stopped “RUN
COMPLETED” will be displayed and if selected the display will
flash. Access to the chamber and rotor can be gained by
pressing the OPEN key . If selected the door will open
automatically.
You can also stop the centrifuging program manually at any
time by pressing the STOP key .
Continuous Operation
If you selected continuous operation (refer to the section
Continuous Operation), you will have to stop the centrifuge
manually. Press the STOP key on the control panel. The
centrifuge will be decelerated at the set rate. The message
“RUN COMPLETED” will be displayed. After pressing the
OPEN key , the centrifuge door will open and you can
remove the centrifuged samples.
Short-term Centrifugation
For quick centrifugation, the Centrifuge GT 1 / 1R has a
PULSE-function.
By holding down the PULSE key , spinning will start at
maximum acceleration rate, continue at maximum rotor
speed until the key is released. The rotor then decelerates at
maximum rate. Preset values for acceleration, deceleration
and speed or RCF are disregarded for the PULSE function.
The centrifuge accelerates and brakes at maximum power.
Any rpm or RCF entered beforehand is overridden.
Note: The centrifuge accelerates to maximum speed,
according to the rotor used.
Check carefully whether you have to maintain a certain speed
for your application.
During the acceleration process, time is counted forwards in
seconds. The reading stays displayed until the centrifuge door
is opened.
Removing the Rotor
To remove the rotor, proceed as follows:
1. Open the centrifuge door.
2. Grab the rotor handle and fully depress the Auto-Lock
button. At the same time, pull the rotor vertically upwards
and remove it from the centrifuge spindle. Make sure not
to tilt the rotor while doing this.
Figure 5. Removing the rotor

14 | Operation Centrifuge GT 1 / 1R
Aerosol-Tight Rotors
For your protection when using an aerosol tight lid the rotor
should only be removed with the lid closed.
Note: Rotors supplied with a lid for aerosol-tight applications
come with a mandrel, which belongs to the Auto-Lock. Be
sure not to place the lid onto this mandrel to prevent it from
being damaged.
Figure 6. Auto-Lock lid for aerosol-tight rotors
Switch off Centrifuge
To turn off the centrifuge push the mains switch to “0”.
CAUTION: Skin can be pierced by sharp
mandrel tip.
Do not touch the mandrel.

Centrifuge GT 1 / 1R System Menu | 15
System Menu
To get into the system menu, press and hold any key on the
front panel turning on the centrifuge. Keep this key depressed
until system menu appears in display. Navigate through the
system menu using the TIME arrow keys .
Flowchart System Menu
The system menu can be navigated using the SPEED arrow
keys . The shown entry can be changed using the TIME
and TEMP arrow keys . Press the START key to
save this edit and quit the system menu. Press the STOP key
to quit the system menu.
Values shown at some entries in the picture below are only
examples.
Note: A total number of cycles completed on the centrifuge is
counted, since installation or a new main board was installed.
Cycle counts should be periodically recorded to help with the
identification of the total number of runs a rotor has
completed.
YES or NO
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Росский
Language
End of run beep?
End of run Flash?
Keypad beep?
Beeper Volume
LCD powersave?
YES or NO
YES or NO
0 - 5
Door Auto open?
Program only mode
Software ID: 0602 V01
NVRAM ID: 4753 V05
Cycle count total: 123456
YES or NO
YES or NO
YES or NO
English, Deutsch, Francaise

16 | Maintenance and Care Centrifuge GT 1 / 1R
Maintenance and Care
Cleaning Intervals
For the sake of personal, environmental, and material
protection, it is your duty to clean and if necessary disinfect
the centrifuge on a regular basis.
Basics
• Use warm water with a neutral detergent that is suitable
for use with the materials. If in doubt contact the
manufacturer of the cleaning agents.
• Never use caustic cleaning agents such as soap suds,
phosphoric acid, bleaching solutions or scrubbing
powder.
• Remove rotor and clean bowl with a small amount of
cleaning agent, applied to a clean cloth.
• Use a soft brush without metal bristles to remove
stubborn residue.
Afterwards rinse with a small amount of distilled water
and remove any excess with absorbent towels.
• Use only disinfectants with a pH of 6-8.
Rotor and Accessories
Inspection
After thoroughly cleaning rotors, they should be inspected for
damage, wear and corrosion.
Metal Parts
Ensure that the black protective coating is complete. It can be
removed through wear and chemical attack and can lead to
unseen corrosions. Any signs of corrosions, such as rust or
white / metalic pitting, the rotor or accessories should be
immediately removed from service. Particular attention should
be taken with the bottom of buckets on swing out rotors and
tube cavities on fixed angle rotors.
Plastic Parts
Check for signs plastic crazing, fading, bruising or cracking.
Cleaning
Clean as follows:
1. Clean rotor, buckets and accessories outside of the
centrifuge bowl.
2. Separate all rotors, buckets, lids, adapters and tubes to
allow thorough cleaning.
Maintenance Recommended Interval
Rotor Chamber (Bowl) Daily or when polluted
Rotor Daily or when polluted
Accessories Daily or when polluted
Filter Mat (Capacitor) Every six months by a service
technician.
Cabinet Once per month
Ventilation Holes Every six months
CAUTION: Not rated procedures or agents
could deteriorate the materials of the centrifuge
and lead to malfunction.
Refrain from using any other cleaning or
decontamination procedure than those
recommended here, if you are not entirely sure
that the intended procedure is safe for the
equipment.
Use only approved cleansers.
If in doubt, contact Fisher Scientific.
CAUTION: Do not run any rotor or accessories
with sign of damage.
Ensure that the rotor, buckets and accessories
are within the service life and number of cycles.
It is recommend that you have rotors and
accessories inspected yearly as part of your
routine service to ensure safety.
CAUTION: Before using any cleaning methods
except those recommended by the manufacturer,
users should check with the manufacturer of the
cleaning agents that the proposed method will
not damage the equipment.