Fluidics Failure - Insufficient 7.3/6.8/Wash
Run 7.3 or 6.8 buffer in the Measurement Block Routine, Page 4-10, to
help diagnose the fault.
Reagents
Buffer or Wash bottles are empty
Replace buffers or Wash.
Bottle tubes do not reach the solution
Feed the tubes through the connector caps into the solutions.
See Page 3-5.
System
Blockage in sample path
Clear blockage, Page 3-31.
Leaks in sample path
Cure leaks. Check sensor ‘O’ ring seals and make sure sensors are
seated correctly, Page 3-17.
Sucking in air on calibrant line
Cure leak.
New/greasy probe
Raise probe lever and immerse tip of probe in a strong soap solution for
10 to 15 seconds. Lower the probe lever and Prime the 248, Page 3-9.
Damaged seal in probe sleeve caused by bent probe
Replace probe and housing, Page 3-24.
Pump Tubing
Insufficient “pull” on calibrant line
Check reagent pump tubing is tensioned.
Check rubber connector is pushed firmly onto manifold.
Replace tubing, Page 3-13.
Tubing is blocked
Clear blockage, Page 3-31. If fault persists replace tubing.
Mechanical
Pump rollers are dirty
Remove pump rollers, clean, grease and re-assemble, Page 3-13.
Probe is misaligned
Realign or replace probe.
Solenoid(s) inoperative
Contact your Siemens Healthcare Diagnostics distributor.
Fluid Detector
Sample detector cover not fitted
Fit cover, Page 3-29.
Ambient light affecting fluid detector
Position 248 out of direct sunlight.
Dirty tubing
Replace probe tubing and measurement block tube, Page 3-24.
Detector failure (confirm using Sample Flow Routine, Page 4-12)
Replace detector. See instructions on detector packaging.
Troubleshooting the System Page 4-5
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