Roche 91 Series - CHECK TEMPERATURE (9140;9180;9181 Only; Err; PERFORM DAILY MAINTENANCE (Except 9110; Replace Fluid Pack

Roche Diagnostics April 2007
D-12 Service manual · Version 2.0
13 Troubleshooting 91xx pH/Electrolyte Analyzers
Error messages and troubleshooting
ERR
The analyzer will display ERR in place of sample results when the analyzer is unable to
obtain valid voltage readings from the electrode (A/D over- or underflow).
Possible causes and remedies:
o Ensure that the electrodes are securely in place and plugged into the analyzer.
o Check to ensure proper filling of the reference electrode has occurred.
o Ensure proper sampling and proper sample preparation. Check for air bubbles in
the sample.
o Check level of filling solution in the pH electrode and refill if necessary.
PERFORM DAILY MAINTENANCE (except 9110)
This message will be printed at the end of a sample report when cleaning or
conditioning have not been performed within the last 24 hours. This message is
printed only. Perform Daily Maintenance to clear this message.
REPLACE FLUID PACK
When the monitored fluid level in the ISE SnapPakTM reaches 5% remaining, the
analyzer will print REPLACE FLUID PACK at the end of each sample report. This
message is printed only. Replace the ISE SnapPakTM following the instructions
outlined in the Operator Manual.
To maximize the life of the ISE SnapPakTM, continue running the analyzer until a
STANDARD A NOT DETECTED message is displayed. This will ensure that the ISE
SnapPakTM is completely depleted before replacement.
CHECK TEMPERATURE (9140/9180/9181 only)
On the 9140/80/81 models, the analyzer will display CHECK TEMPERATURE at the
end of each measurement, if the temperature measured is out of range (10.0°C to
40°C). The temperature sensor is located in the right side electrode holder.
On the 9110, this message will be displayed if the temperature of the preheater is out
of range (36.0°C to 38.0°C).
Possible causes and remedies:
o Ensure that the preheater cable (9110 only) or sample sensor cable is securely
plugged in.
o Check whether room temperature is within specified limits (15°C to 32°C / 60°F
to 90°F).
o Check fuse F3 (LED D3).
o Perform temperature adjustment procedure.
o Replace SBC board or preheater (9110 only) or right side electrode holder.