Roche Diagnostics May 2009
Service Manual · Version 9.0 B-67
cobas b 221 system 4 Components
Bottle compartment
Replacing the pump tube
1
Remove the cobas b 221 system top cover.
2
Open the locking lever (Plexiglas cover) of the peristaltic pump and slide the
linear clamp (white plastic part) up.
e
For details, see Figure B-46 on page B-65.
3
Remove the old pump tube.
4
Position the new pump tube around the pump head in the correct way. Note that
the tubes must not be crossed.
The remaining assembly is done in reverse order.
Bottle compartment
Replacing the bottle compartment cover
1
Open the bottle compartment cover.
2
Disconnect the two cables (left and right).
3
Lift the two front fork heads of the gas dampers (left and right) from the retaining
pins of the bottle compartment cover with a screwdriver (see below).
4
Remove the bottle compartment cover.
Use the reverse order for assembly.
A Back fork head B Front fork head
Figure B-49 Gas damper
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