© 2017 by Hettich AG
page 31
CW II-OM-rev1.0
Hettich AG
Laborapparate
phone:
+41 44 786 80 20
Seestrasse 204a
e-mail:
CH-8806 Baech
internet:
www.hettich.ch
12
Maintenance and servicing
The device can be contaminated.
Pull the mains plug before cleaning.
For safety reasons you must wear gloves and a respiratory mask when cleaning the equipment used for
blood processing.
Before any other cleaning or decontamination process other than that recommended by the manufacturer is
applied, the user has to check with the manufacturer that the planned process does not damage the device.
•
Centrifuges, rotors and accessories must not be cleaned in rinsing machines.
•
They may only be cleaned by hand and disinfected with liquids.
•
The water temperature must be between 20
– 25°C, 68°F – 77°F.
•
Only detergents/disinfectants may be used which:
−
have a pH between 5 - 8
−
do not contain caustic alkalis, peroxides, chlorine compounds, acids and alkaline solutions
•
In order to prevent appearances of corrosion through cleaning agents or disinfectants, the application guide from
the manufacturer of the cleaning agent or disinfectant are absolutely to be heeded.
•
Certain preservation agents, in azide-free saline solutions can cause long term damage effects to the plastic parts
in the device. Regular cleaning prevents salt deposits and lengthens the life span of these parts.
12.1
Centrifuge
•
The following must be carried out daily:
−
Check the hoses and their attachments. The hoses must not be cracked or blocked and must be securely
attached. The used saline solution must be allowed to flow off freely through the drainage pipe.
−
The centrifugal area must be clean and free from dried up salt crystals and other deposits. Clean the
centrifugation area, the drain gutter and the covering ring with a moist cloth or sponge. The drain gutter and
the covering ring can be removed from the centrifugation area for cleaning, refer to Chapter "Removal of the
drain gutter".
−
Check the filling volume of the saline solution (see the “Adjusting the filling volume” chapter).
−
The system must be rinsed through with distilled water to avoid formation of salt crystals, refer to Chapter
"System with rinsing cleaning program (Clean Program)".
•
It is important that the hoses are kept clean and free from dried up salt crystals and other deposits.
•
The system must be regularly cleaned, refer to Chapter "Clean system with cleaning solution". It is recommended
to clean the appliance at least once a week.
•
Clean the centrifuge housing and the centrifuging chamber regularly, using soap or a mild detergent and a damp
cloth if required. This serves as hygiene protection and prevents corrosion caused by impurities.
•
Ingredients of suitable detergents:
soap, anionic tensides, non-ionic tensides.
•
After using detergents, remove the detergent residue by wiping with a damp cloth.
•
The surfaces must be dried immediately after cleaning.
•
Lightly rub the rubber seal of the centrifuge chamber with talcum powder or a rubber care product after each
cleaning.
•
Surface disinfection:
−
If infectious materials penetrates into the centrifugal chamber this is to be disinfected immediately.
−
Ingredients of suitable disinfectants:
ethanol, n-propanol, isopropyl alcohol, glutardialdehyde, quaternary ammonium compounds.
−
After using disinfectants, remove the disinfectant residue by wiping with a damp cloth.
−
The surfaces must be dried immediately after disinfecting.
•
Removal of radioactive contaminants:
−
The agent must be specifically labelled as being an agent for removing radioactive contaminants.
−
Ingredients of suitable agents for removing radioactive contaminants:
anionic tensides, non-ionic tensides, polyhydrated ethanol.
−
After removing the radioactive contaminants, remove the agent residue by wiping with a damp cloth.
−
The surfaces must be dried directly after removing the radioactive contaminants.
•
The centrifuging chamber is to be checked for damage once a year.
If damage is found which is relevant to safety, the centrifuge may no longer be put into operation. In this case,
notify Customer Service.
