Roche cobas b 221 system User Manual

Roche Diagnostics May 2009
B-84 Service Manual · Version 9.0
4 Components cobas b 221 system
Val ve s
5 Unscrew the three screws holding the central measuring unit.
e For details, see Figure B-2 on page B-20.
6 Raise the central measuring unit forward until it clicks audibly into place.
7 Unscrew the two screws holding the mainboard retainer.
e For details, see Figure B-66 on page B-89.
8 Fold the mainboard retainer down.
9 Disassemble the fan shield.
e For instructions, see Replacing the main fan unit on page B-110.
10 Disconnect the valve bus cable of the respective valve from the slot.
11 Unscrew the two screws holding the respective valve.
12 Pull the valve back and remove it.
13 Insert the valve spindle of the new valve manually.
Use the reverse order for assembly.
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.

Roche cobas b 221 system Specifications

General

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