Roche Diagnostics May 2009
Service Manual · Version 9.0 B-77
cobas b 221 system 4 Components
Vacuum system
Replacing the moisture trap
1
Unscrew the five screws holding the left side panel of the cobas b 221 system and
remove the side panel.
2
Pull the moisture trap from the holder and disconnect the two tubes.
e
For details, see Figure B-58 on page B-75.
3
Remove the moisture trap.
Use the reverse order for assembly.
Replacing the waste tube
1
Remove the waste docking mechanism.
e
For instructions, see Replacing the waste docking mechanism on page B-69.
2
Pull the waste tube from the waste docking mechanism and remove it.
Use the reverse order for assembly.
Various components of the cobas b 221 system, such as T&D module, tubes, waste bottle, 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.
Do not remove the fastening screws completely, because they are secured against loss.
Various components of the cobas b 221 system, such as T&D module, tubes, waste bottle, 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.
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