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2. Removed the rotor by using an allen wrench (1.5mm) to loosen the set screw. Once loosened,
the rotor can be pulled upward and removed from the motor shaft.
3. For cleaning and desinfection of the unit and the rotor chamber using the above mentioned
cleaner (see chapter 3.1.1).
4. Clean all accessible areas of the device and its accessories, including the power cord with a
damp cloth.
5. Wash the rubber seals and rotor chamber thoroughly with water.
6. Rub the dry rubber seals with glycerol or talc to prevent these to becoming brittle. Other
components of the unit, e.g. the lid lock, motor shaft and rotor must not be greased.
7. Dry the motor shaft with a soft, dry and lint-free cloth.
8. Control the unit and accessories for damage.
Remove at least every six months adherent dust from the ventilation slots in the centrifuge by using
a soft brush. Turn off the centrifuge and pull the plug before doing that.
3.1.3 Cleaning and disinfection of the rotor
1. Clean and disinfect the rotors, rotor lids and adapters with the mentioned cleaner in chapter
3.1.1).
2. Use a bottle brush to clean and disinfect the rotor bores.
3. Rinse the rotors, rotorlid and adapter with clear water. Particular the drillings of angle rotors.
4. For drying of the rotors and accessories set them on a towel. Place the angle rotors with bores
down, to dry them to.
5. Dry the rotor cone with a soft, dry and lint-free cloth and look for damage. Do not grease the
rotor cone.
3.1.4 Disinfection of PP rotors
The recommended time for autoclaving: 15 – 20 min at 121°C (1 bar)
ATTENTION: The sterilization time of 20 min. must not be exceeded. Sterilization again and
again will cause reduction of the mechanical resistance of the plastic material
Before the autoclaving the PP-rotor and adapter must thoroughly be cleaned to avoid the burning in
of dirty residues.
You can disregard the consequences of some chemical residues to plastic materials at ambient
temperatures. But at the high temperatures of the autoclaving those residues may corrode and
destroy the plastic. The objects must be thoroughly washed up with distilled water after the cleaning
but before the autoclaving. Residues of any cleaning liquids may cause fissures, whitening and
stains.
Gassterilization
Adapters, bottles and rotors may be gassterilized with Ethylenoxyd. According to the duration of the
application you may give long enough an airing to the items after the sterilization and before using
them again.
ATTENTION: Because the temperature may rise during the sterilization, rotors, adapters and
bottles must not be closed respectively must be totally unscrewed.
Chemical sterilization
Bottles, adapters and rotors may be treated with the usual liquid disinfectants.
© Hermle Labortechnik GmbH
Z 130 M_V1.15
MAINTENANCE
8
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