Domel CENTRIC 150 User manual

USER'S MANUAL
UNIVERSAL LABORATORY
CENTRIFUGE CENTRIC 150
Domel, d.o.o.
Otoki 21, 4228 Železniki, Slovenia
BU Laboratory systems
Na Plavžu 79, 4228 Železniki
Tel.: [phone]
Fax.: [phone]
Internet: www.tehtnica.si
Edition Month Year
2. January 2011

USER'S MANUAL UNIVERSAL CENTRIFUGE CENTRIC 150
Page 1
TABLE OF CONTENTS
TABLE OF CONTENTS...................................................................................................................1
1.0 IMPORTANT GENERAL INFORMATION............................................................................2
2.0 GENERAL INFORMATION .....................................................................................................2
2.1 DEFINITION ............................................................................................................................2
2.2 TECHNICAL DESCRIPTION................................................................................................2
2.3 TECHNICAL DATA................................................................................................................3
2.4 SECURITY FUNCTIONS .......................................................................................................4
3.0 INSTALLATION.........................................................................................................................4
3.1 CENTRIFUGE PLACING.......................................................................................................4
3.2 ATTACHING THE POWER CORD......................................................................................4
3.3 PRIMARY EQUIPMENT........................................................................................................4
3.4 COVER OPENING ..................................................................................................................4
3.5 MANUAL OPENING THE COVER......................................................................................5
4.0 ROTORS AND ACCESSORIES................................................................................................5
4.1 ROTOR FIXING ......................................................................................................................5
4.2 ROTOR REMOVING..............................................................................................................5
4.3 ROTOR LOADING..................................................................................................................6
4.4 CRITICAL SPEED...................................................................................................................6
4.5 CALCULATING MAXIMUM ROTOR SPEED...................................................................7
4.6 ROTORS AND ACCESSORIES.............................................................................................7
5.0 CENTRIFUGING ........................................................................................................................8
5.1 CENTRIFUGE CONTROL.....................................................................................................8
5.2 SECURITY FUNCTIONS AND ERROR DETECTION .....................................................9
5.2.1 ROTOR BRAKING AT SWITCH ON TIME .....................................................................9
5.2.2 COVER BLOCKING...........................................................................................................9
5.2.3 ROTOR IMBALANCE........................................................................................................9
5.2.4 ROTOR IDENTIFICATION................................................................................................9
5.2.5 MOTOR FAILURE..............................................................................................................9
5.3 ERRORS....................................................................................................................................9
5.4 USER INTERFACE ...............................................................................................................10
5.4.1 LC DISPLAY .....................................................................................................................10
5.4.2 LIGHT INDICATORS.......................................................................................................10
5.4.3 KEYBOARD......................................................................................................................11
5.5 SETTING AND CHANGING PARAMETERS...................................................................11
5.6 ACTIVATION-DEACTIVATION CENTRIFUGING.......................................................12
5.7 OPERATING ..........................................................................................................................12
6.0 INCORRECT USAGE...............................................................................................................13
7.0 POWER INTERRUPTS............................................................................................................13
8.0 MAINTENANCE.......................................................................................................................13
8.1 CLEANING INSTRUCTIONS..............................................................................................14
8.2 DECONTAMINATION .........................................................................................................14
9.0 WARRANTY..............................................................................................................................14
10.0 TRANSPORT...........................................................................................................................14
11.0 CENTRIFUGAL ACCELERATION RCF FOR DIFFERENT ROTORS........................15

USER'S MANUAL UNIVERSAL CENTRIFUGE CENTRIC 150
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1.0 IMPORTANT GENERAL INFORMATION
This general information and step precaution, which refers to rotor and accessories
protection against rust, like expressed in chapter MAINTENANCE, must be considered and
strictly performed otherwise producer shall not be liable for user's safety and warranty
Before use of the centrifuge. please check max. rotor load. If load exceed max. allowed
value (1.2 g/cm3), reduce speed as described in following text.
Every spilt liquid inside the centrifuge chamber must be attentive removed to prevent rust,
which is the main reason for faults.
Specially attention must be dedicated to contagious materials
Rotor loading must be arranged symmetric with regard to axis of rotation so that rotor
imbalance is minimal and to accomplish requests described in further.
Do not mix the same type accessories from other manufacturers. Each set is balanced, so it
mast be used as set.
It’s recommendable the centrifuge is checked from qualified person at least every 6 months.
WARNING: There are no serviceable parts inside device replaceable by user !
Do not move the centrifuge during rotor is turning !
2.0 GENERAL INFORMATION
2.1 DEFINITION
CENTRIC 150 benchop centrifuge does the work of several single-function centrifuges.
Five interchangable rotors allow you to process different size centrifuge tubes, test tubes and
capillary tubes.
2.2 TECHNICAL DESCRIPTION
Casing and centrifuge chamber is made-up of steel plate, varnished with high quality
lacquer. Chamber is protected with solid cover, which can be opened only when rotor stops. Motor
is fixed on rubber absorbers to avoid vibrations.
Device is controlled by microprocessor. Use is so very comfortable and easy. There are
build several security functions and self diagnostics tests.
Mains switch is on the back side with build in fuses (figure 1)

USER'S MANUAL UNIVERSAL CENTRIFUGE CENTRIC 150
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figure 1
2.3 TECHNICAL DATA
Code No: 455 . 000
Supply voltage : 230 V (+/- 10%), 50/60 Hz
115 V (+/- 10%), 50/60 Hz
Input power : 400 VA
Fuses : 2 x 5 A - T
2 x 6.3 A – T for 115V version
Isolation category : I
Surrounding temp. range : 2 °C do 40 °C
Relative humidity : do 85 %
RPM range : 500 do 13000 RPM
- set in 100 RPM steps
Timer : 0,1 to 60 min. in 0,1 min. steps
Acc. - Deceleration : 1 to 9 levels
Operating temperature : DIN 58970
RFI protection : VDE 0875 ( N )
Communication : RS 232 , RS 485 (option)
Max. load : 8x15 ml,
12x12 ml,
24 x 0,25 ml + 24x1.5 ml
Dimensions : 235 x 280 x 320 mm
Mass : 14,5 kg
Packaging : 268 x 374 x 320 mm, 16 kg

USER'S MANUAL UNIVERSAL CENTRIFUGE CENTRIC 150
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2.4 SECURITY FUNCTIONS
- Solid casing and centrifuging chamber
- Safety cover mechanism
- Imbalance detection
- Self test procedures
Design was made considered the following standards:
- IEC 1010-2-20
- BS 4402
- UV VBG7Z
- DIN 58970 parts 1,2 and 4
3.0 INSTALLATION
Installation must be made by following steps:
3.1 CENTRIFUGE PLACING
Apparatus must be placed on horizontal smooth base, without swinging.
Centrifuge is constructed for indoor use only ! It should be placed at least 300 mm from the
wall, other devices and accessories to prevent injury and damage. Do not place it near heating
elements !
3.2 ATTACHING THE POWER CORD
Fit the mains cord, which is included in the delivery in-to mains receptacle. Connect the
other end of the cord to a grounded wall-socket, protected with 16A fuse. (look at chapter 2.3)
3.3 PRIMARY EQUIPMENT
Following equipment is enclosed to centrifuge:
- User's Manual
- Warranty
- Special wrench for removing rotor
- Special tool for rotor removing
- Special wrench for manual opening cover
- Spare fuses 5 A - T or 6.3 A – T for 115V version
3.4 COVER OPENING
Cover can be opened only when device is powered by mains power and rotor stops.
You can open the cover by turning button on right side in clockwise direction. If cover is opened,
light indicator COVER blinks.

USER'S MANUAL UNIVERSAL CENTRIFUGE CENTRIC 150
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3.5 MANUAL OPENING THE COVER
Cover can be opened only when device is powered by mains power. If there is need to open
the cover when power fail, you can do this with special wrench. Push wrench gently trough the hole
near the button and turn button in clockwise direction simultaneously (look figure 2).
figure 2
WARNING: Before manual opening be sure that rotor stops !
4.0 ROTORS AND ACCESSORIES
4.1 ROTOR FIXING
Open the cover and switch off main switch. Put rotor on the motor perch and fix it with
screw. Make this carefully and with appropriate force. Use special wrench delivered in package.
WARNING: Before fixing the rotor on motor perch be sure that all fixing surfaces are
smooth without any damage.
4.2 ROTOR REMOVING
Open the cover and switch off main switch. Remove all accessories from rotor. Unscrew the
screw and remove washer. Put special tool in rotor center and turn it in clockwise direction until
rotor is loosened. Then remove rotor (look at figure 3).

USER'S MANUAL UNIVERSAL CENTRIFUGE CENTRIC 150
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figure 3
4.3 ROTOR LOADING
Rotor must always be equipped with the same type of test tubes on all places or with pairs of
equal type which are placed on opposite places according to motor axis (look at figure 4). Test
tubes must be filled with the same quantity of samples to avoid imbalance and possible damage.
SAMPLES OF CORRECT AND INCORRECT ROTOR LOADING
figure 4
4.4 CRITICAL SPEED
Each rotating body has critical speed with resonance. So take care about this. Rotors are
precisely balanced, but little difference in loading can cause this resonance Do not use critical speed
for regular work nevertheless there is build in imbalance sensor.

USER'S MANUAL UNIVERSAL CENTRIFUGE CENTRIC 150
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4.5 CALCULATING MAXIMUM ROTOR SPEED
Each rotor is designed to stand large centrifugal forces. Nevertheless there is large safety
factor for each type of rotor, user must obey following instructions and limits. In other case is self
responsible for possible errors or damage. Security functions and elements build in device are
expected only for normal use.
Maximum speed for each type of rotor is marked on top side of the rotor. Speed is
calculated for examples with maximum density of 1,2 gram / cm3. If there is need to centrifuge high
density examples, maximum speed must be reduced by following equitation:
M = (1.2 * n2/ S)1/2
M = Reduced maximum speed
n = Maximum rotor speed for examples with 1,2 g / cm3density
S = Example density
4.6 ROTORS AND ACCESSORIES
Rotor RA 12 / 12 Code 455.260
Adapter code (set 12 ) 455.259 455.258
Volume ( ml ) 15 12 7 5
Nopositions 6 12 12 12
Dimensions of test tube
D X L ( mm ) 16 x 120 Falcon 16 x 100 Vacutainer 12 x 100 12 x 75 Vacutainer
Max. radius ( mm ) 100 100 98 85
Max. speed ( min. -1 ) 5000 5000 5000 5000
Max. centr. accel. ( g ) 2795 2795 2740 2375
Max. kinetic energy 970 Nm
table 1
Rotor RA 8 / 15 Code 455.250
Adapter code (set 12 ) 455.259 455.258
Volume ( ml ) 15 12 7 5
Nopositions 8 8 8 8
Dimensions of test tube
D X L ( mm ) 16 x 120 Falcon 16 x 100 Vacutainer 12 x 100 12 x 75 Vacutainer
Max. radius ( mm ) 100 100 98 85
Max. speed ( min. -1 ) 5000 5000 5000 5000
Max. centr. accel. ( g ) 2795 2795 2740 2375
Max. kinetic energy 970 Nm
table 2

USER'S MANUAL UNIVERSAL CENTRIFUGE CENTRIC 150
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Rotor RA 24 M
Code 455.270 Rotor RH 8 M Code 455.280
Adapter code (set 12 ) 455.285 455.287
Volume ( ml ) 0,25 1,5 0,25 - 0,4 1,5 - 2
Nopositions 24 24 24 16
Dimensions of test tube
D X L ( mm ) 6 x 30 11 x 40 6 x 30 6 x 50 11 x 40 11 x 50
Max. radius ( mm ) 65 80 60 / 80 70 / 80
Max. speed ( min. -1 ) 13000 13000 13000 13000
Max. centr. accel ( g ) 12280 15115 15115 15115
Max. kinetic energy 4020 Nm
table 3
Rotor HEMATOCRIT measure plate
Code 455.290
Volume ( ml ) 24 capillary 1,2 x 75mm
Max. radius ( mm ) 92
Max. speed ( min. -1 ) 13000
Max. centr. accel. ( g ) 17380
Max. kinetic energy 3245 Nm
table 4
5.0 CENTRIFUGING
5.1 CENTRIFUGE CONTROL
Microprocessor controller board supervise all functions in device. Regulate motor speed, read
keyboard, display all necessary parameters and control all security functions. Operator manage
device with four keys keyboard, LC display and three light indicators (figure 5)
figure 5
Operator can set following parameters:
- working time
- rotation speed
- acceleration / deceleration level
All parameters are stored in memory unit (EEPROM).

USER'S MANUAL UNIVERSAL CENTRIFUGE CENTRIC 150
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5.2 SECURITY FUNCTIONS AND ERROR DETECTION
In controller board are build several security functions in hardware and software level.
Functions are active all the time to check if there is something wrong. In this case appropriate
security procedure is taken.
5.2.1 ROTOR BRAKING AT SWITCH ON TIME
In case that rotor is turning in switch on time (power fail recovery for example) braking is
activated until rotor stops. After that, cover mechanism is loosen and cover can be opened.
5.2.2 COVER BLOCKING
Safety cover mechanism disable cover opening if rotor is in motion. Opening is enabled
only if rotor stops and there is mains supply present of course.
5.2.3 ROTOR IMBALANCE
If rotor or buckets are incorrect loaded or unbalanced, sensor detect swinging and activates
braking procedure until rotor stops.
5.2.4 ROTOR IDENTIFICATION
After each start rotor identification is made and then short beep is activated. In case that set
speed is greater than allowed for recognized type of rotor, speed is automatically limited according
to level for this type. Graphics symbol for rotation blinks.
5.2.5 MOTOR FAILURE
In operating time motor behavior is observing. If there is any deviation from normal motor
is switch off and error message is displayed.
5.3 ERRORS
Error detection is equipped with appropriate message on display or light and sound
indicator.
Light indicators:
COVER: Light indicator blinks if cover is opened. Start is disabled. Short beep and
"ERROR" message warns operator on failure
IMBALANCE: Light indicator blinks if sensor detect rotor swinging. "ERROR 3" is
displayed and braking is activated.
Error messages:
ERROR 1.0 Motor does not run
ERROR 1.1 Triac is defective ( open)
ERROR 1.2 Opto sensor is defective
ERROR 1.3 Error during braking process
ERROR 1.4 Acceleration too fast ( no rotor mounted)
ERROR 1.5 Speed too high during slowing down ( triac shorted)
ERROR 1.6 Speed too high ( triac shorted)
ERROR 1.7 Deceleration too fast