Roche cobas b 221 system User Manual

Roche Diagnostics May 2009
B-60 Service Manual · Version 9.0
4 Components cobas b 221 system
COOX module (cobas b 221<2/4/6> systems only)
1 Remove the top cover.
2 Disconnect the left tube from the cuvette holder.
e For details, see Figure B-41 on page B-58.
3 Disconnect the connector tube to V4 on the T-piece and remove tubing set tHb/
PolyOX..
e For details, see Figure B-41 on page B-58.
Use the reverse order for assembly.
Replacing the hemolyzer
1 Remove the top cover, the printer cover and the T&D cover of the cobas b 221
system.
2 Rotate the T&D lock on the T&D module 90 degrees to the right.
e For details, see Figure B-4 on page B-22.
3 Carefully pull the sample inlet path out to the right and remove it.
4 Unscrew the three screws holding the central measuring unit.
e For details, see Figure B-2 on page B-20.
5 Raise the central measuring unit forward until it clicks audibly into place.
6 Disconnect the hemolyzer plug from the HSIN board.
7 Unscrew the two screws (internal hex) holding the hemolyzer head and remove it.
8 Unscrew the two screws (see above, C) holding the hemolyzer and pull it out to
the back.
Do not remove the fastening screws completely, because they are secured against loss.
The sample inlet path must be removed at this time, otherwise it will be destroyed by folding the
central measuring unit out.
A Hemolyzer
B Two screws holding the hemolyzer head
C Two screws holding the hemolyzer
Figure B-43 Hemolyzer
C
B
A

Roche cobas b 221 system Specifications

General

Brand	Roche
Model	cobas b 221 system
Category	Medical Equipment
Language	English