Roche cobas b 221 system User Manual

Roche Diagnostics May 2009
B-64 Service Manual · Version 9.0
4 Components cobas b 221 system
Peristaltic pumps (PP)
1 Remove the top cover and 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 Slide the bypass holder down and fold the bypass nipple up.
e For details, see Figure B-8 on page B-25.
4 Disconnect the bypass nipple, the connector tube to the tHb/SO
2
module (or
hemolyzer) and the waste tube (on the waste separator).
5 Unscrew the two screws holding the Hb cartridge and remove the cartridge (see
below).
Use the reverse order for assembly.
Peristaltic pumps (PP)
Replacing a peristaltic pump
1 Switch off the cobas b 221 system.
e Please pay attention to Shutdown on page B-19.
2 Remove the top cover and printer cover of the cobas b 221 system.
3 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.
4 Carefully pull the sample inlet path out to the right and remove it.
5 Unscrew the three screws holding the central measuring unit.
e For details, see Figure B-2 on page B-20.
A Two screws holding the Hb cartridge
Figure B-45 Hb cartridge
A

Roche cobas b 221 system Specifications

General

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