Labnet Z233M-2 User Manual

INSTRINSTR

INSTR

INSTRINSTR

UCTION MANUUCTION MANU

UCTION MANU

UCTION MANUUCTION MANU

FORFOR

FOR

FORFOR

ALAL

AL

ALAL

MICRMICR

MICR

MICRMICR

National Labnet CompanyNational Labnet Company

National Labnet Company

National Labnet CompanyNational Labnet Company
PO Box 841PO Box 841

PO Box 841

PO Box 841PO Box 841
Woodbridge, NJ 07095Woodbridge, NJ 07095

Woodbridge, NJ 07095

Woodbridge, NJ 07095Woodbridge, NJ 07095

OCENTRIFUGEOCENTRIFUGE

OCENTRIFUGE

OCENTRIFUGEOCENTRIFUGE

Z 233 M-2Z 233 M-2

Z 233 M-2

Z 233 M-2Z 233 M-2

Phone: [phone]Phone: [phone]

Phone: [phone]

Phone: [phone]Phone: [phone]
Fax:Fax:

[phone][phone]

Fax:

[phone]

Fax:Fax:

[phone][phone]

1

INDEXINDEX

INDEX

INDEXINDEX

1. General Information

1 .1 Precaution and hazards ................................................................................. 3

1.2 Description . .................................................................................................... 4

1.3 Do not operate the centrifuge under the following conditions . ...................... 4

1 .4 Safety standards . .......................................................................................... 4

1. 5 Technical data . .............................................................................................. 5

1.6 Accessories supplied with each centrifuge unit . ............................................ 6

1 . 7 Warranty ........................................................................................................ 6

2. Installation

2.1 Unpacking the centrifuge ............................................................................... 6

2 . 2 Required space ............................................................................................. 6

2.3 Installation ..................................................................................................... 7

3. How to install and load a rotor

3.1 Mounting and securing an angle rotor . .......................................................... 7

3.2 Set or change rotor-code ............................................................................... 8

3. 3 Overloading rotors . ........................................................................................ 9

3 .4 Removing the rotor . ....................................................................................... 9

PagePage

Page

PagePage

4. Operation

4.1 Power ............................................................................................................ 10

4.2 Lid release . .................................................................................................... 10

4.3 Lid lock .......................................................................................................... 10

4.4 Preselection of speed / RCF . ........................................................................ 11

4.5 Preselection of operating time . ...................................................................... 11

4.6 Preselection of brake intensity and acceleration . .......................................... 12

4.7 Keyboard - Starting the centrifuge - "quick"-key ............................................ 13

4.8 "Stop" key . ...................................................................................................... 13

5. Temperture

5.1 Temperture ....................................................................................................... 13

6. Safety facilities

6 . 1 Imbalance ...................................................................................................... 14

6. Service and Maintenance

6.1 Service and inspection of centrifuge . ............................................................ 15

6.2 Cleaning the centrifuge . ................................................................................. 15

6.3 Cleaning of centrifuge after breakage of glass tubes/bottles . ....................... 16

6.4 Disinfection .................................................................................................... 16

7. Breakdown

7.1 Emergency lid release ................................................................................... 15

7.2 Check list / Trouble shooting . ........................................................................ 16

2

1.1.

1.

1.1.

General InformationGeneral Information

General Information

General InformationGeneral Information

1 .1 Precautions and hazards

Before putting the centrifuge into operation, please read this instructionBefore putting the centrifuge into operation, please read this instruction

Before putting the centrifuge into operation, please read this instruction

Before putting the centrifuge into operation, please read this instructionBefore putting the centrifuge into operation, please read this instruction
manual carefully.manual carefully.

manual carefully.

manual carefully.manual carefully.

The centrifuge must not be operated by unqualified persons not familar with the correct
use and intended purpose of the machine. Please use only the original spare parts.

For personal and environmental safety, pay special attention to the following

precautions:

The Hermle Z 233 M-2 is neither explosion proof nor inert gas shielded and should,
therefore, never be operated in explosive-hazardous locations.
Never stay in the safety zone of 30 cm around the centrifuge or deposit dangerous
materials inside this zone during centrifugation.
The centrifugation of flammable, explosive or radioactive samples is not
allowed.
Do not spin samples which can chemically react with each other when exposed to air.
Never spin toxical or pathological material without adequate safety precautions i.e.
centrifuging of buckets/tubes without or with defective hermetic sealing is not
allowed.
The end-user should perform appropriate disinfection procedures in the event of
dangerous materials contaminating the centrifuge or its accessories.
General universal laboratory precautions should be observed if infectious materials are
centrifuged. If necessary, please contact a health safety officer!
It is prohibited to run the centrifuge with rotors not suited for this centrifuge model.
Under no circumstances, should the centrifuge lid be opened while the rotor is still
turning (running with a speed of more than 2 meters per second).

The following rules must be strictly adhered to:The following rules must be strictly adhered to:

The following rules must be strictly adhered to:

The following rules must be strictly adhered to:The following rules must be strictly adhered to:

Do not operate the centrifuge if it is not installed correctly.
Never operate the centrifuge in a disassembled state ( e.g. without sheet metal cover).
Do not run the centrifuge if electrical or mechanical systems have been tampered with

by unauthorized persons.

Never use accessories such as rotors and buckets which are not exclusively
approved by
commercially available centrifuge tubes of glass or plastic.
Do not spin corrosive samples which may cause damage to the centrifuge and impair
the mechanic resistance.
Never operate the centrifuge with rotors or buckets which show any signs of
corrosion or mechanical damage

The manufacturer is only responsible for the security and reliability of theThe manufacturer is only responsible for the security and reliability of the

The manufacturer is only responsible for the security and reliability of the

The manufacturer is only responsible for the security and reliability of theThe manufacturer is only responsible for the security and reliability of the
centrifuge if:centrifuge if:

centrifuge if:

centrifuge if:centrifuge if:
The unit is operated according to the instruction manual.
Modifications, repairs and new adjustments are performed by HERMLE or Labnet

centrifuge is operated corresponds to the IEC-regulations.

Hermle Labortechnik GmbH or National Labnet CompanyHermle Labortechnik GmbH or National Labnet Company

Hermle Labortechnik GmbH or National Labnet Company, except

Hermle Labortechnik GmbH or National Labnet CompanyHermle Labortechnik GmbH or National Labnet Company

authorized persons and the electrical installation of the location where the

3

2 1.2 Description

Model Z 233 M-2 is a microcentrifuge. Four rotors for microcentrifuge tubes are
available (24 x 1.5ml, 44 x 1.5ml, 48 combo 24x1.5, 24 x 0.5ml, and 64 x .05ml).
The Z 233 M-2 is microprocessor controlled and has a maintenance-free induction
drive motor.

1.3 Do not operate the centrifuge if:

- The unit is not installed correctly.

- The unit is partly dismantled.

- The unit was serviced by non-authorized or non-qualified personnel.

- The rotor is not installed securely on the motor shaft.

- Rotors or accessories will be used which are not authorized for this
unit by Hermle or Labnet.
Exception: Commercially available tubes or bottles made of glass or plastic.

- The unit is in explosive atmospheres.

- Combustible or explosive samples are used.

- Samples are used which can mix and react chemically with each other.

1 .4 Safety standards

The centrifuge corresponds to the general requirements set by German law for
medical apparatus, "MedGV" group 3.
The following standards have been considered for the production of our centrifuges:

- Accident prevention rules for centrifuges, UVV-VBG 7z.

- Accident prevention rules for electrical equipment & installations, UVV-VBG 4.

- International Standard IEC 1010-1 and IEC 1010-2-D

- European Standard PR EN 61010-1 and PR EN 61010-2-2

- Electrical interference suppression according to interference degree B
as per VDE 0871.

4

1.51.5

Technical DataTechnical Data

1.5

Technical Data

1.51.5

Technical DataTechnical Data

______________________________________________________________________

Manufacturer Hermle Labortechnik GmbH

______________________________________________________________________

Type Z 233 M2

______________________________________________________________________

Dimensions:
Width 28 cm
Depth 37 cm
Height 26 cm

______________________________________________________________________

Weight 17 kg

______________________________________________________________________

Noise level 64 dB(A)

______________________________________________________________________

Max. speed 14 000 rpm
Max. volume 4 4 x 2.0ml
Max. RCF 18,620 x g
Admiss. density 1.2 kg/dm

3

Admiss. kinetic energy 3761 Nm

______________________________________________________________________

Electrical connection AC 230 V/50 Hz 120 V/60 Hz
Current 6 A 6.5 A
Connected load 460 Watt 610 Watt

______________________________________________________________________

Interference suppression VDE 0871, interference degree B

______________________________________________________________________

Service dept. at Labnet [phone]

______________________________________________________________________

Address of service: National Labnet Company

162 Fernwood Avenue
Edison, NJ 08837

5

1.6 Accessories supplied with each centrifuge unit

2 Fine-wire fuses 6.3 AT, 1 Instruction manual, 1 Tool for removing the rotor

1 . 7 Warranty

This centrifuge has been subjected to thorough testing and quality control during the
production process.
In the unlikely event of any manufacturing faults occuring, the centrifuge and rotors
are covered by warranty for a period of one year from date of delivery.
This warranty becomes invalid in case of improper operation, use of non­appropriate spare parts or accessories and non-authorized modification of rotor or
centrifuge.

The manufacturer reserves the right to make technical modifications to theThe manufacturer reserves the right to make technical modifications to the

The manufacturer reserves the right to make technical modifications to the

The manufacturer reserves the right to make technical modifications to theThe manufacturer reserves the right to make technical modifications to the
product for the purpose of technical improvement.product for the purpose of technical improvement.

product for the purpose of technical improvement.

product for the purpose of technical improvement.product for the purpose of technical improvement.

2.2.

InstallationInstallation

2.

Installation

2.2.

InstallationInstallation

2.1 Unpacking the centrifuge

The Z 233 M-2 is supplied in a carton with corrugated cardboard inserts.
Open the carton and remove the corrugated cardboard inserts, then gently remove
centrifuge from carton. The instruction manual and the accessories mentioned
under 1.6 should be kept with the centrifuge.
storage for at least 1 year for warranty purposes.storage for at least 1 year for warranty purposes.

storage for at least 1 year for warranty purposes.

storage for at least 1 year for warranty purposes.storage for at least 1 year for warranty purposes.

2 . 2 Required space

The centrifuge should be installed on a rigid, even surface. The centrifuge should
only be operated on a stable laboratory table/cabinet etc. Balance the centrifuge
with a spirit level. To guarantee the necessary heat dissipation, the unit must be
situated so that there is a space of at least 15 cm on each side of the unit.
Never place the centrifuge in an area subject to excessive heat, e.g., strong
sunlight, as the performance of the unit is based upon an ambient temperature
of +23°C.

Please keep all packaging in safePlease keep all packaging in safe

Please keep all packaging in safe

Please keep all packaging in safePlease keep all packaging in safe

Attention:Attention:

Attention:

Attention:Attention:
New safety standards require a safety margin space of 30 cm around theNew safety standards require a safety margin space of 30 cm around the

New safety standards require a safety margin space of 30 cm around the

New safety standards require a safety margin space of 30 cm around theNew safety standards require a safety margin space of 30 cm around the
centrifuge. Mark this area to indicate that personnel and dangerous materialcentrifuge. Mark this area to indicate that personnel and dangerous material

centrifuge. Mark this area to indicate that personnel and dangerous material

centrifuge. Mark this area to indicate that personnel and dangerous materialcentrifuge. Mark this area to indicate that personnel and dangerous material
(e.g. flammable or infectious liquids) should be kept outside this area during(e.g. flammable or infectious liquids) should be kept outside this area during

(e.g. flammable or infectious liquids) should be kept outside this area during

(e.g. flammable or infectious liquids) should be kept outside this area during(e.g. flammable or infectious liquids) should be kept outside this area during
operation.operation.

operation.

operation.operation.

6

2.3 Installation
Check that:

- the power supply corresponds to that on the manufacturer's rating label which is

!!

!

!!

3.3.

How to install and load a rotorHow to install and load a rotor

3.

How to install and load a rotor

3.3.

How to install and load a rotorHow to install and load a rotor

3.1 Mounting and securing an angle rotor

mounted on the rear panel, then connect the power cord to the centrifuge and the
socket.

- The line voltage circuit breaker has a maximum of 16 Amp. type K slow release

for commonly used instruments.

- An emergency switch is installed outside the room to disconnect the power

supply in case of a troubled run.

- The digital indications on the display are lighting up.

- Press the "lid" key. You can open the centrifuge lid now.

Clean the motor shaft, as well as the rotor mounting hole with a piece of cloth and
place the rotor on the motor shaft ensuring that the pins align correctly with the rotor
slots.

Figure 1a Figure 1b

Hold the rotor with one hand and secure the rotor to the shaft by turning the rotor
nut (1) counter-clockwise (see figure 2).

1

Figure 2

ATTENTION !ATTENTION !

ATTENTION !

ATTENTION !ATTENTION !

If using a rotor that was not originally supplied with the centrifuge, you haveIf using a rotor that was not originally supplied with the centrifuge, you have

If using a rotor that was not originally supplied with the centrifuge, you have

If using a rotor that was not originally supplied with the centrifuge, you haveIf using a rotor that was not originally supplied with the centrifuge, you have
to change the standard rotor-code which is programmed (see chapter 3.2,to change the standard rotor-code which is programmed (see chapter 3.2,

to change the standard rotor-code which is programmed (see chapter 3.2,

to change the standard rotor-code which is programmed (see chapter 3.2,to change the standard rotor-code which is programmed (see chapter 3.2,
page 7 E).page 7 E).

page 7 E).

page 7 E).page 7 E).

7

-Load the rotor symmetrically by inserting tubes into spaces opposite from each
other. The rotor must always be balanced in this fashion prior to operation.

ATTENTION:ATTENTION:

ATTENTION:

ATTENTION:ATTENTION:
Before operation, secure the rotor lid to the rotor by pressing the snapBefore operation, secure the rotor lid to the rotor by pressing the snap

Before operation, secure the rotor lid to the rotor by pressing the snap

Before operation, secure the rotor lid to the rotor by pressing the snapBefore operation, secure the rotor lid to the rotor by pressing the snap
connector lightly on the rotor nut (see figure 3).connector lightly on the rotor nut (see figure 3).

connector lightly on the rotor nut (see figure 3).

connector lightly on the rotor nut (see figure 3).connector lightly on the rotor nut (see figure 3).

Figure 3

3.23.2

Set or change rotor-code .Set or change rotor-code .

3.2

Set or change rotor-code .

3.23.2

Set or change rotor-code .Set or change rotor-code .

With a new unit, the centrifuge is programmed with the rotor-code for the rotor that
has been ordered with the machine. If you wish to use another rotor you have to
change the rotor code.

Please proceed as follows:
Open centrifuge lid and unplug the centrifuge. Press the"lid" key (2), (see figure 4),
hold it and at the same time plug in the centrifuge.

Z233M-2

1 2

Note: To check rotor code turn power on (plug in), open lid and press the "Quick"Note: To check rotor code turn power on (plug in), open lid and press the "Quick"

Note: To check rotor code turn power on (plug in), open lid and press the "Quick"

Note: To check rotor code turn power on (plug in), open lid and press the "Quick"Note: To check rotor code turn power on (plug in), open lid and press the "Quick"

button. Rotor code is now displayed. button. Rotor code is now displayed.

button. Rotor code is now displayed.

button. Rotor code is now displayed. button. Rotor code is now displayed.

Figure 4

8

On the digital display for "speed rpm / rcf g x 10" the number code for the set rotor
type appears. On the digital display "time min-sec" the letters "ro" ( rotor ) appears.
Turn the speed knob (1), (see figure 4) till the required rotor code appears on the

display.

Rotor Rotor code
C0230-2A, 24 x 1.5ml 59
C0200-95, 18 x 1.5ml 95
C0230-9A, 44 x 1.5ml 88
C0230-43A, 64 x .05ml 92
C0230-55A, 24 x 1.5, 24 x 0.5ml 88
C0230-TSA Strip tube 4 x 8 - 0.2ml 59

After doing that, disconnect the power supply and put it back and the new rotor
number is stored.

3. 3 Overloading rotors

The max. load permitted for a rotor, which is determined by the manufacturer, as
well as the max. speed allowed with the rotor (see indications on the rotor itself)
must not be exceeded. The liquids with which the rotors are loaded should have

an average homogeneous density of 1.2g per ml or less, when the rotor is
running at maximum speed. To spin liquids of a higher density, the speed has to be
reduced according to the following formula:

1,21,2

1,2

Reduced speedReduced speed

Reduced speed

Reduced speedReduced speed

Example:Example:

Example:

Example:Example:

In case you have any questions, please contact the National Labnet!In case you have any questions, please contact the National Labnet!

In case you have any questions, please contact the National Labnet!

In case you have any questions, please contact the National Labnet!In case you have any questions, please contact the National Labnet!

n n

n

n n

n n

n

n n

redred

red

redred

redred

red

redred

= =

=

= =

= =

=

= =

1,21,2

higher densityhigher density

higher density

higher densityhigher density
valuevalue

value

valuevalue

1,21,2

1,2

1,21,2
1,71,7

1,7

1,71,7

x max. speed (n x max. speed (n

x max. speed (n

x max. speed (n x max. speed (n

x 4000 = 3360 rpmx 4000 = 3360 rpm

x 4000 = 3360 rpm

x 4000 = 3360 rpmx 4000 = 3360 rpm

maxmax

max

maxmax

))

)

))

3 .4 Removing the rotor

Take off the rotor lid and hold the rotor with one hand.
Turn the rotor nut clockwise, until the rotor is loose and take the rotor vertically off
the shaft.

ATTENTION:ATTENTION:

ATTENTION:

ATTENTION:ATTENTION:
Never operate the centrifuge with rotors or buckets which show any signs ofNever operate the centrifuge with rotors or buckets which show any signs of

Never operate the centrifuge with rotors or buckets which show any signs of

Never operate the centrifuge with rotors or buckets which show any signs ofNever operate the centrifuge with rotors or buckets which show any signs of
corrosion or mechanical damage. Never operate with strongly corrosivecorrosion or mechanical damage. Never operate with strongly corrosive

corrosion or mechanical damage. Never operate with strongly corrosive

corrosion or mechanical damage. Never operate with strongly corrosivecorrosion or mechanical damage. Never operate with strongly corrosive
materials which could damage rotor and buckets.materials which could damage rotor and buckets.

materials which could damage rotor and buckets.

materials which could damage rotor and buckets.materials which could damage rotor and buckets.

9

4.4.

OperationOperation

4.

Operation

4.4.

OperationOperation

4.1 Power

4.2 Lid release

You can switch on the centrifuge by plugging in the power supply. The digital
indications on the display will light up when the power is on.

When the green control lamp of the "lid" key (1) lights, the rotor is not moving and
the centrifuge lid is ready to open.
Press the "lid" key (1) (see figure 5) to open the lid. The green control lamp(2) will
extinguish as soon as the lid is opened or the unit started.

Z233M-2

2 1

Figure 5

4.3 Lid lock

Close the centrifuge lid, after the rotor has been fixed correctly as described.
The centrifuge can only be started when the lid is closed correctly.
The green control lamp of the "lid" key will light as soon as the lid is closed correctly.
When the rotor starts accelerating the control lamp of the "lid" key extinguishes and
the lid cannot be opened.

10

4.4 Preselection of speed / RCF

When the centrifuge lid is open, you can preset the required speed or rcf with the
speed knob (1).
With the "speed/rcf" key (2) you can change the display from speed to g-value.
The green control lamps (3) show which mode is activated. If the centrifuge lid is
closed and during the run, the speed can be changed as follows:
Press the "preset" key (4), hold it and at the same time change speed or g-value
with the speed knob. The max. speed for all rotors is 14 000 rpm.

Z233M-2

Figure 6

4 1 2 3

11

4.5 Preselection of operating time

You can adjust the desired operating time between 1 and 60 minutes or hold.
With the centrifuge lid open you can preset the operating time with the knob (3).
During a run and with the centrifuge lid closed you have to press the "preset" key
(1), hold it and change operating time by turning the knob (3). The preselected
running time will be indicated on the time display (2). At the end of a run the preset

operating time will be kept for further runs.

Figure 7

For continuous runs turn the knob clockwise to the limit stop. The continuous run
will be indicated on the digital display with two minus signs "--".
You can check the operating time during a continuous run as follows:

- Press the start botton (4).

continuous run
press start

Attention: to check the operating time you have to wait one minute after start
You can stop a continuous run with the "stop" key.

1 23 4

After this, the operating time will be automatically displayed in the following
sequence:
For example 4 hours and 13 minutes operating time:

min/sec. min/sec. min/sec.

symbol "h" for hours number of hours symbol "m" for

min/sec.

minutes

number of minutes

running time
indication end ­continuous run

min/sec.min/sec.

12

4.6 Preselection of brake intensity and acceleration

With the "fast/slow" key (1) you have the choice between two steps of brake and
acceleration intensity.

1

Figure 8

If the green "fast" control lamp is lit, the unit accelerates and decelerates fast.
If the green "slow"control lamp is lit, the unit accelerates and decelerates very softly
below 2 000 rpm.

preset
speed

2000 rpm

fast

Acceleration times fast / slow in seconds:Acceleration times fast / slow in seconds:

Acceleration times fast / slow in seconds:

Acceleration times fast / slow in seconds:Acceleration times fast / slow in seconds:

slow

Rotor C0200-95 Rotor C0230-43A
18 x 1.5ml 64 x .05ml

(10 / 29) (15 / 25)
9 / 20 17 / 25

Rotor C0230-2A Rotor C0230-9A and C0230-55A
24 x 1.5ml 44 x 1.5ml and 24 x 1.5, 24 x.05ml

(10 / 20) (15 / 25)
15 / 26 17 / 25

Deceleration times fast / slow in seconds:Deceleration times fast / slow in seconds:

Deceleration times fast / slow in seconds:

Deceleration times fast / slow in seconds:Deceleration times fast / slow in seconds:
Rotor C0200-95 Rotor C0230-43A
18 x 1.5ml 64 x .05ml

(9 / 13) (16 / 27)
11 / 18 19 / 34

Rotor C0230-2A Rotor C0230-9A and C0230-55A
24 x 1.5ml 44 x 1.5ml and 24 x 1.5, 24 x.05ml

(13 / 23) (16 / 27)
15 / 28 19 / 34

The numbers in brackets for 220V/50-60Hz
Non brackets numbers for 120V/50-60Hz

13

4.7 Keyboard - Starting the centrifuge - "quick"-key

1 "Lid" key: To open the centrifuge lid.

2 "Quick" key: For short time runs.

3 "Start" key: To start the centrifuge.

4 "Stop" key: To stop the centrifuge

Figure 9

If the green LED of the "lid" key is lit,
the lid is closed correctly.

befor the preset operating time has
expired or to stop the centrifuge
during a continuous run.

Starting the centrifugeStarting the centrifuge

Starting the centrifuge

Starting the centrifugeStarting the centrifuge

The rotor has to be fixed correctly and completely loaded. Close the centrifuge lid.
As soon as the green LED of the "lid" key is lit the centrifuge can be started. Then
press the "start" key.

"quick" - key - Short time runs
For short centrifuge runs you can start the run with the "quick" key. Press the
"quick" key. The centrifuge starts and keeps running as long as you press the
"quick"-key. The operating time will be indicated in seconds on the digital "time"
display.

4.8 "Stop" key

Press the "stop" key if you want to interrupt a centrifuge run. The centrifuge
decelerates according to the adjusted brake intensity. You can change the brake
intensity during deceleration.

14

5.5.

Temperature FeaturesTemperature Features

5.

Temperature Features

5.5.

Temperature FeaturesTemperature Features

5 .1 Temperature

During centrifugation, heat is generated by air friction between the rapidly
spinning rotor and the air inside the rotor chamber.
The temperature rise depends on the rotor ( swing-out or angle rotor ),bucket type,
ambient temperature, running time and the speed of the rotor.

The continous air flow through the centrifuge housing is restricting the
temperature rise of the samples to the standard value of 40°C with each rotor even
at maximum speed.

6.6.

Safety facilitiesSafety facilities

6.

Safety facilities

6.6.

Safety facilitiesSafety facilities

6 .1 Imbalance

In case of unequal loading of opposite buckets/tube racks or tube-holes, the
operation will be interrupted during the acceleration phase. The rotor will be
decelerated to a standstill. Additionally the message "ERROR" appears on the
preset "speed" display.

If the actual "speed" display shows error no. 1, the difference in weight of the
samples is too big. Fill the tubes and load the rotor as described under point 3.
If the actual "speed" display shows error no. 2, there can be several reasons:

- The imbalance switch is not adjusted correctly.

- The imbalance switch is defective.

15

7.1 Service and inspection of centrifuge

Centrifuge service and inspection should be done regularly and only by authorized
and qualified personnel.

7 . 2 Maintenance and cleaning

Maintenance
The maintenance of the centrifuge involves essentially keeping the rotor
chamber, the rotor and the accessories clean. Please pay special attention to
anodized aluminium parts. Breakage of rotors can be caused even by slight
damages. In the case of rotor, buckets or tube racks contacting corrosive liquids,
the respective spots and parts have to be cleaned carefully.
Corrosive liquids are for example:

- alkaline soup-solution

- alkaline amino

- strong acids

- solutions containg heavy metals

- waterfree and chlorinated solvents

- salt solutions e.g. sea-water

Use only original spare parts!Use only original spare parts!

Use only original spare parts!

Use only original spare parts!Use only original spare parts!

Cleaning:

The purpose of a thorough cleaning is, beside hygienic reasons, the avoidance of
corrosion by soiling. In order to avoid the damage of anodized parts such as
rotors, reduction plates ect., only neutral cleaning agents with a ph-value 6-8
should be used. Never use an alkaline cleaning agents ( ph > 8 ). After cleaning
please ensure that all parts are dried thoroughly by hand or in a warm-air-cabinet
( max. temperature +50°C ).

It is recommended that all anodized aluminum parts are regularly treated with
anti corrosion oil, so that their durability will be increased and the corrosion
risk reduced.

Usually when used in a cold room, humidity and non hermetically closed

samples, may cause condensation to form. The condensation should be
removed regulary with a cloth from the rotor chamber.

Unplug the centrifuge when it is not being used, allow the chamber to reach room

temperature, and dry out the chamber with a cloth.

16

7.3 Cleaning of centrifuge after breakage of glass tubes/glass bottles

With high g-values, there is a possibility that tube breakage will occur. Should this
happen, the centrifuge, rotor, buckets, adapters and the rotor chamber must be
thoroughly cleaned and all broken particles removed immediately.
If this is not done, they could scratch the protective coating of the rotor.
If the rotor chamber has not been properly cleaned, this will produce a fine black
dust which can cause significant damage to the centrifuge chamber, rotor, buckets
and the samples.

7.4 Disinfection

If, for example through tube breakage, infectious material is spilled into the
centrifuge, the rotor and the rotor chamber should be disinfected !!!
Rotor is autoclavable.Rotor is autoclavable.

Rotor is autoclavable. Rotor and rotor chamber should then be treated with a

Rotor is autoclavable.Rotor is autoclavable.
neutral disinfection agent, for example: 10% bleach solution. A disinfectant spray
should be used to thoroughly clean the chamber, rotor, adapters etc..

8.8.

BreakdownBreakdown

8.

Breakdown

8.8.

BreakdownBreakdown

8.1 Emergency lid release

In case of power failure or any malfunction, the lid can be opened manually to
protect your samples.
Please proceed as follows:

- Unplug the power cord.

- There is a plastic plug at the left side of the centrifuge housing.
Behind that plastic plug there is a red cord.

- Remove the plastic plug and pull the red cord. The lid can then be opened
(see figure 10).

Figure 10

17

8.2 Check list / Trouble shooting

The error message will be indicated by an error number on the digital speed
display (see figure 11).

There is a distinction between two different kinds of errors. The digits on the
indication "speed" have the following meaning:

Error no. 1 - 49 (Forced stop)
If one of those errors occurs, the rotor will be braked from the preset speed to 0.
As soon as the rotor has stopped, the error message can be reset by opening and

closing the centrifuge lid.

Error no. 50 - 99 (Emergency stop)

If this occurs, the frequency converter will be switched off. This means that the rotor
will be stopped brakeless. The error message can only be reset by unpluging the
power cord and then plug back in. If the unit stops due to an error, you should
restart the unit to check if the error occurs again.

The error numbers which are not listed in this chapter are not in use at the time of
publication and they are reserved for future use in widening the error recognition
program.

Figure 11

Error no.: 1Error no.: 1

Error no.: 1

Error no.: 1Error no.: 1

ImbalanceImbalance

Imbalance

ImbalanceImbalance

Reason: Incorrect loading of the rotor

Action: Balance your samples

Reason: Incorrect adjustment of the imbalance switch

Action: Imbalance switch has to be readjusted (call service)

Error no.: 2Error no.: 2

Error no.: 2

Error no.: 2Error no.: 2

Permanent imbalance signalPermanent imbalance signal

Permanent imbalance signal

Permanent imbalance signalPermanent imbalance signal

Reason: Position of the imbalance switch not correct

Action: Imbalance switch has to be readjusted (call service)

18

Reason: Imbalance switch is defective

Action: Imbalance switch has to be replaced (call service)

Error no.: 25Error no.: 25

Error no.: 25

Error no.: 25Error no.: 25

Power failurePower failure

Power failure

Power failurePower failure

Reason: Power failure while rotor is in motion

Action: Open and reclose the lid, restart the centrifuge

Error no.: 36Error no.: 36

Error no.: 36

Error no.: 36Error no.: 36

Relay for the frequency converter cannot be releasedRelay for the frequency converter cannot be released

Relay for the frequency converter cannot be released

Relay for the frequency converter cannot be releasedRelay for the frequency converter cannot be released

Reason: Defect on the power board

Action: Call service

Reason: Centrifuge lid is jamming

Action: Open the centrifuge lid manually. Grease the lid lock lightly.

If this failure occurs again, call service.

Error no.:50,51Error no.:50,51

Error no.:50,51

Error no.:50,51Error no.:50,51

Memory failureMemory failure

Memory failure

Memory failureMemory failure

Reason: Internal or external memory failure

Action: Restart the unit, if the failure occurs again, call service

Error no.: 55Error no.: 55

Error no.: 55

Error no.: 55Error no.: 55

OverspeedOverspeed

Overspeed

OverspeedOverspeed

Reason: Overspeed sensor or engine speed sensor defective

Action: Call service

Error no.: 60Error no.: 60

Error no.: 60

Error no.: 60Error no.: 60

Engine speed sensor signal is missingEngine speed sensor signal is missing

Engine speed sensor signal is missing

Engine speed sensor signal is missingEngine speed sensor signal is missing

Reason: Engine speed sensor defective or parting of a cable at the sensor

Action: Call service

19

Error no.: 82Error no.: 82

Error no.: 82

Error no.: 82Error no.: 82

Cutoff power board - frequency converterCutoff power board - frequency converter

Cutoff power board - frequency converter

Cutoff power board - frequency converterCutoff power board - frequency converter

Reason: Overcurrent or undervoltage due to power supply fluctuations

Action: Restart the unit, take care that the power supply is stable

Error no.: 83Error no.: 83

Error no.: 83

Error no.: 83Error no.: 83

Preset speed cannot be reachedPreset speed cannot be reached

Preset speed cannot be reached

Preset speed cannot be reachedPreset speed cannot be reached

Reason: Preset speed cannot be reached

Action: Call service

Error no.: 90Error no.: 90

Error no.: 90

Error no.: 90Error no.: 90

Emergency lid releaseEmergency lid release

Emergency lid release

Emergency lid releaseEmergency lid release

Reason: Lid has been opened during centrifuge run.

Action: Close the lid. Danger of accident!

Only open centrifuge lid when rotor stands still

Reason: Control switch of lid lock defective

Action: Call service

20