Human HUMAX 4K, User Manual

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Special attention to the following is necessary:
Installation of the unit: Proper ventilation, levelling of the centrifuge, rigidity and stability of the bench.
Rotor installation: Check that the rotor nut is tightened firmly.
Cleaning of the accessories and the rotor chamber.
Load balancing
Samples: The cleaning of the accessories is particularly important when using potentially infectious
materials.
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Ideally, the rotor should be washed after every use but at least weekly in warm water containing a few drops of
mild liquid soap (domestic washing liquid is ideal ) and any time after spillage has occurred.
Each rotor insert must be washed thoroughly using a small nylon brush. Do not use metal wire brushes.
Dry the rotor with a soft, absorbent, non- woven cloth or tissue. Drying may be finished off with a warm air jet
(e.g. a hair-dryer).
Make sure that no deposits remain in the bottom of the insert holes because the pressure of a flask or tube from
above during centrifugation will significantly increase the chances of breakage.
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Our centrifuges are used in medical research, where hazardous substances, including radioactive chemicals, are
frequently found.
Always use the appropriate decontamination procedures where the rotor is exposed to these chemicals.
Examples of commonly used techniques are outlined below. The information is given as a guide only. It is the
responsibility of the owner to use the most suitable procedure.
The rotor should always be completely disassembled before being subjected to heat and after external chemical
cleaning.
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Alcohol ( 70% ethanol or isopropanol ) applied for 10 minutes is ideal for destroying bacteria and viruses.
Alternatively, rotors can be autoclaved for 20 minutes at 120°C to destroy micro-organisms.
Any part which has been subjected to temperatures above 130°C must be discarded.
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High voltage is present behind the panels of the centrifuge.
Caution: Do not open the instrument! There are no user-servicable parts inside.
In the case of a malfunction, please contact your local HUMAN representative.
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Use only rotors and accessories designed for use in the centrifuges.
Do not attempt to override the lid interlock assembly.
Load and lock the rotor only in the recommended way. As the centrifuge starts to spin, an improperly
loaded rotor could cause sufficient force to damage the drive shaft and the rotor chamber.