Roche cobas b 221 system User Manual

Roche Diagnostics May 2009
D-134 Service Manual · Version 9.0
7 Troubleshooting cobas b 221 system
Important test routines
Mix1
"Mix 1" will be printed out after the "Status" as well as date and time and indicates the
last value which the concerned parameter measured with Mix1.
This enty can be compared with the last entry in the section Status in order to
recognize the change in the signal characteristics.
FMS time
The FMS time is printed out with date and time in this section.
This is the time for the positioning of the solution CAL B from the FMS into the BG
measuring chamber. In case there is no data available for the selected period the latest
valid data from the log file will be printed.
If the FMS time is very low, this indicates a blocked air tube at V19. If the FMS time is
very high, this indicates a leakage in the FMS – BG measuiring chamber – main pump
area: call up "General fluidics test" (h [System] > [Diagnostics] > [General fluidics
test]).
SS3–Hemo Pos. Time
The SS3–hemolyzer positioning time is printed out with date and time in this section.
This is a counter for the positioning of the solution from the SS3 into the hemolyzer.
In case there is no data available for the selected period the latest valid data from the
log file will be printed.
If the SS3–Hemo Pos. Time is very low, a too short tube between Hb cartridge and
hemolyzer can be the cause. This tube is part of the Hb cartridge. If the SS3–Hemo
Pos. Time is very high, an old main pump tube, a too long tube between Hb cartridge
and hemolyzer or a leakage can be the cause.
min typ max
FMS time 0 = 0 s 140 = 1,4 s 250 = 2,5 s
min typ max
SS3–Hemo Pos. Time 0 = 0 s 15 = 1,5 s 45 = 4,5 s

Roche cobas b 221 system Specifications

General

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