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Instruction Manual SC 2700 CentrifugeInstruction Manual SC 2700 Centrifuge
3.1.2 Cleaning / disinfecting the device
1. Withthelidopen,switchothemainsswitchandunplugfromthepowersupply.
2. Loosen the locking screw by turning it counter-clockwise.
3. Remove the rotor.
4. Use the previously described agents (see 3.1.1) to clean and disinfect the device and the rotor chamber.
5. Wipe all accessible surfaces of the device and its accessories, including the mains cable, with a damp cloth.
6. Thoroughly clean the rubber seals of the rotor chamber with water.
7. Rub the dry rubber seals with glycerine or talcum to prevent them from becoming brittle. Other components
of the device, e.g. the lid lock, motor shaft and rotor chamber must not be greased.
8. Clean the motor shaft with a clean, lint-free cloth.
9. Check the device and its accessories for corrosion and damage.
Every six months at least, remove dust deposits from the ventilation slits of the centrifuge with a paintbrush or
handbrush.Switchothecentrifugeandunplugitbeforedoingthis.
3.1.3 Cleaning / Disinfecting the rotor
1. Clean and disinfect the rotor and sleeves with the previously described agents (see 3.1.1).
2. Use a bottle brush to clean and disinfect the cavities in the rotor.
3. Thoroughly clean the rotor and sleeves with water. Pay special attention to the sleeve cavities.
4. Place the rotor and the sleeves on a cloth to dry. Place the sleeves with the cavities facing downwards
so that residual liquid can run out of the holes.
5. Clean the rotor mount with a clean, lint-free cloth and check for damage. Do not grease the motor mount.
6. Place the dry rotor on the motor shaft.
7. Tighten the locking screw by turning it clockwise.
3.1.4 Disinfecting PPS rotors
Autoclaving
Autoclaving may cause deformation of plastic components such as rotor bodies!
Therecommendedworkcycleofthisis:15–20minat121°C(1bar).
NOTE: Do not exceed the sterilisation time and temperature, as the mechanical strength of the plastic is
reduced by repeated sterilisation.
Before autoclaving, the plastic rotor and sleeves must be carefully cleaned to prevent dirt residues from burning
in.
Chemicalresidueswhoseeectonplasticisnegligibleatroomtemperaturesmayattackanddestroyplastic
at the high temperatures of the autoclaving process. After cleaning, the objects must be thoroughly rinsed with
distilled water before autoclaving. Cleaning agent residues may cause cracks, white discoloration and spots.
NOTE: The rotor and sleeves may only be autoclaved ten times at the most. After this they must be
replaced.
Gas sterilisation
The rotor and sleeves may be gas sterilised with ethylene oxide. Depending on the duration of the application,
the objects must be ventilated for an adequate period before being used again.
Chemical sterilisation
Treat the rotor and sleeves with normal disinfection agents.
NOTE: Before using cleaning or decontamination methods other than those recommended by the
manufacturer, the user must contact the manufacturer to ensure that the intended method will not
damage the centrifuge or the rotors.
3.1.5 Glass breakage
Observe the centrifuging parameters as recommended by the manufacturer of the vessel. Centrifuging vessels
have an increasing level of breakage as the g number (speed) increases. Splintered glass must be removed from
the rotor, the sleeve and the rotor chamber immediately. Fine splinters of glass scratch the surface protection of
the rotors and the centrifuge chamber.
Ifglasssplintersentertherotorchamber,weariscausedbytheaircirculation.Thisverynedustseverely
contaminates the centrifuge chamber, the rotors and the samples.
If necessary, replace the rotor and the sleeves to prevent further damage. Check the rotor and the sleeves for
residues and damage at regular intervals.
NOTE: Please observe the manufacturer’s specications for the glass vessels.
3.2 Duration of use for rotors and sleeves
Rotors and sleeves have a maximum duration of use of 3 years from the date of commissioning.
Prerequisites for the duration of use:
Correct use, undamaged condition, recommended care.
4. Troubleshooting
4.1 Error messages: Cause / Remedy
The error messages assist in indentifying any faults which may occur. The diagnoses in this section may not
always be correct, as these relate to theoretically occurring faults and their remedies.
Please inform us of all faults which you have found, which are not listed in this section. This is the only way in
which we can supplement and improve this instruction manual.
Thank you for your help in advance.