Roche cobas b 221 system User Manual

Roche Diagnostics May 2009
Service Manual · Version 9.0 B-43
cobas b 221 system 4 Components
ISE measuring chamber (cobas b 221<3>–<6> systems only)
5 Unscrew the five screws holding the MSS module.
6 Lift the MSS module and pull the ISE module forward.
7 Remove the board plug from the ISE module and remove the ISE module.
Use the reverse order for assembly.
Replacing the fan protector (ISE module)
1 Disassemble the ISE module.
e For instructions, see Replacing the ISE measuring chamber on page B-42.
2 Loosen the four hooks at the ends of the fan protector.
e For details, see Figure B-26 on page B-41.
3 Release the head of the NTC cable from the fan protector with a screwdriver and
slide it out.
4 Remove fan protector.
Use the reverse order for assembly.
Replacing the electrode locking lever (ISE module)
1 Remove the cobas b 221 system top cover and open the ISE measuring chamber.
2 Half open the electrode locking lever, hold it in place with both hands and pull it
up.
3 Disconnect the tube and remove the electrode locking lever.
Use the reverse order for assembly.
Replacing the center seal (ISE module)
1 Remove the cobas b 221 system top cover and open the ISE measuring chamber.
2 Open the electrode locking lever.
3 Remove the electrodes.
4 Remove the center seal (blue plastic ring on the right interior panel) with
tweezers.
Use the reverse order for assembly.
Make sure that there is no contamination between heating plate and sample distributor cartridge.
Do not use tools to install the new center seal, otherwise it may be damaged.

Roche cobas b 221 system Specifications

General

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