Roche Diagnostics May 2009
Service Manual · Version 9.0 B-19
cobas b 221 system 4 Components
Important notes
Important notes
Shutdown
The cobas b 221 system remains switched off for more than 24 hours
h Press [System] > [Utilities] > [Put out of operation] and follow the instructions on
the screen.
e
For details, see Disinfectants on page A-7.
Various components of the cobas b 221 system, such as T&D module, tubes, waste container, waste
separator etc., contain liquid biological residues after use that may cause infection.
Handle these components with care and avoid skin contact. To avoid direct contact with biological
materials, always wear appropriate protective equipment such as lab clothing, protective gloves,
safety glasses and, if necessary, a face mask. Additionally a face shield must be worn if there is a
potential of a splashback. Appropriate disinfection and sterilization procedures must be followed.
Always wear gloves when working with the instrument! The tubes may drip a little after being
disconnected. Remove excess fluids with a clean, absorbent cloth.
After components have been replaced the previous calibration parameters may have changed and it
may be necessary to input new values.
For this reason after modifications the system must be calibrated and then QC measurements must
be conducted to adapt the calibration parameters to the new conditions.
Always use screwdrivers of suitable size.
Unless otherwise specified, always switch off the cobas b 221 system before you start modifying it!
Use only recommended disinfectants to decontaminate the tubing paths!
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