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Manufacturer
Model
What This Guide Helps With
Troubleshooting wash station, fluidics, drain, waste, tubing, reagent wash, or liquid handling errors using external checks before repair escalation.
Step-by-Step Troubleshooting
Ensure Patient Safety and Specimen Integrity First
Confirm whether the analyzer is processing patient samples or running active tests.
Do not interrupt a run unless the analyzer has stopped, alarmed, or laboratory policy requires stopping the system.
If patient testing is affected, notify lab leadership so specimens can be redirected, repeated, or held according to lab procedure.
Expected outcome: Patient results and specimen handling are protected before troubleshooting begins.
Confirm the Exact Error or Alarm
Review the analyzer message, event log, or operator report.
Identify whether the issue involves:
- Wash station error
- Fluidics error
- Waste full or waste not draining
- Probe wash failure
- Wash fluid empty or low
- Liquid level sensing issue
- Vacuum, pressure, or pump-related alarm
- Repeated assay failures related to washing or aspiration
Expected outcome: The complaint is separated into supply, waste, wash station, or internal fluidics behavior.
Check System Status Before Opening Covers
Confirm the analyzer is in a safe state for inspection according to lab workflow.
Look for active motion, sample handling, or reagent movement before accessing external fluid areas.
Expected outcome: Troubleshooting is performed only when the instrument is safe to inspect.
Check Wash Fluid and System Fluids
Verify that required wash fluid containers are present, filled, properly connected, and not expired if applicable.
Confirm the pickup tubing is fully inserted and not floating above the fluid level.
Inspect for kinked, pinched, loose, or disconnected tubing near the fluid containers.
Expected outcome: The analyzer has an available fluid source and can draw from it properly.
If refilling, reseating, or correcting tubing resolves the error, clear the alarm if appropriate, verify normal operation, and stop.
Check Waste Container Level and Connection
Inspect the waste container or waste drain connection.
Confirm the waste container is not full, the cap or tubing is properly connected, and the drain path is not blocked or kinked.
If connected to facility drain, verify the drain line is seated, not elevated incorrectly, and not obstructed.
Expected outcome: Waste fluid has a clear path away from the analyzer.
If correcting the waste container or drain line resolves the issue, document the finding and stop.
Inspect for External Leaks or Fluid Accumulation
Look around the analyzer base, fluid bottle area, waste area, and accessible tubing paths for leaks.
Check for wet surfaces, crystallized residue, dried reagent, unusual pooling, or fluid under the instrument.
Expected outcome: Any obvious external leak or spill condition is identified before further use.
If active leaking is found, remove the analyzer from service and escalate for repair or vendor evaluation.
Check Tubing Routing and Obvious Restrictions
Inspect accessible fluid and waste tubing for:
- Kinks
- Pinch points
- Loose fittings
- Cracks
- Collapsed tubing
- Fluid residue around connectors
- Tubing pulled tight after bottle replacement
Expected outcome: External flow restrictions are ruled out before suspecting internal pumps, valves, or sensors.
Verify Containers and Caps Are Installed Correctly
Confirm wash, water, waste, and other fluid containers are installed in the correct locations.
Check that caps, probes, pickup lines, and waste fittings are fully seated.
Expected outcome: The analyzer is not alarming because of a mispositioned bottle, cap, or fluid pickup assembly.
Check for Recent Operator Changes
Ask the laboratory staff whether the error started after:
- Replacing wash fluid
- Emptying waste
- Moving tubing
- Cleaning the wash area
- Loading reagents
- Performing daily maintenance
- Power cycling the analyzer
Expected outcome: The issue is linked, if possible, to a recent handling or maintenance step.
Review Required Operator Maintenance Status
Confirm with lab staff that routine analyzer maintenance has been completed, including wash station cleaning, probe cleaning, waste handling, and any manufacturer-required daily or periodic maintenance.
Clinical Engineering should not take over assay maintenance unless trained and authorized, but missed maintenance can explain fluidics and wash errors.
Expected outcome: Maintenance-related causes are considered before escalating to hardware repair.
Inspect the Wash Station Area Externally
Look for visible obstruction, dried residue, debris, misplaced parts, or fluid buildup around the wash station area.
Do not perform deep disassembly.
Expected outcome: External contamination or obstruction around the wash station is ruled out.
If cleaning by authorized lab staff resolves the issue, verify the analyzer returns to normal operation and stop.
Restart or Reset Only When Appropriate
If allowed by lab policy and no specimens are at risk, have the operator perform the appropriate analyzer reset, prime, or startup sequence.
Watch whether the same wash, fluidics, or waste error returns during initialization.
Expected outcome: A temporary software or fluid prime issue is separated from a repeatable mechanical or fluidics failure.
Run Available System Checks or Diagnostics
Use available operator-level or service-accessible checks according to site policy and authorization.
Useful checks may include fluidics prime, wash station check, waste check, liquid handling check, or related system diagnostics.
Expected outcome: Diagnostics either pass and support returning the analyzer to service, or fail and justify escalation.
Verify Operation With Laboratory Control Process
After correcting an external cause, have lab staff follow their required quality control or verification process before patient testing resumes.
Clinical Engineering should not release an analyzer for patient testing based only on visual inspection if assay performance may be affected.
Expected outcome: Laboratory quality requirements are met before patient samples are processed.
Stop if the Error Repeats
If the same wash station, fluidics, or waste error returns after fluids, waste, tubing, connections, and maintenance status are checked, stop troubleshooting.
Repeated errors may involve internal pumps, valves, sensors, wash station alignment, vacuum/pressure control, blocked internal fluid paths, or analyzer service issues.
Expected outcome: The device is not repeatedly placed back into service with an unresolved fluidics fault.
If the Problem Persists
If the problem continues after external fluids, waste container, drain path, tubing, bottle seating, leaks, operator maintenance, and basic system checks are ruled out, the issue is likely internal.
The analyzer should be removed from service, labeled Out of Service, and escalated for repair, bench evaluation, or Siemens service support.
Knowing when to stop is proper troubleshooting. Internal pumps, valves, wash station assemblies, sensors, and internal fluidics paths should not be adjusted without the correct service procedure, training, and verification requirements.
Clinical Use Tip
Do not troubleshoot fluidics or waste problems while patient samples are actively being processed unless the analyzer has already stopped or the lab confirms it is safe. Fluidics failures can affect assay washing, reagent handling, sample integrity, and result reliability.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Laboratory staff reported an ADVIA Centaur XP/XPT wash station error during sample processing, with the analyzer unable to continue testing."
Cause
What was observed during troubleshooting.
Example:
"Waste container connection was found loose and the waste line was partially kinked, preventing proper drainage from the analyzer."
Resolution
What action was taken.
Example:
"Reseated the waste connection, corrected the waste line routing, confirmed no external leaks, and had lab staff complete required system checks before returning the analyzer to service."
Helpful Details to Include (If Known)
- Exact error message or alarm code
- Alarm behavior
- Whether patient samples were active at the time
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Wash fluid level checked
- Waste container level checked
- Waste tubing or drain line inspected
- Fluid bottles reseated
- Tubing checked for kinks or leaks
- Any visible fluid, residue, or unusual odor
- Whether maintenance had recently been performed
- Whether prime, reset, or diagnostic checks passed
- Whether QC or lab verification was completed
- Final analyzer status
Final Thought
Wash station, fluidics, and waste errors should be approached carefully because they can affect patient sample processing and result reliability. Start with external fluids, waste routing, tubing, and recent maintenance before suspecting internal failure. If the issue repeats after basic checks, remove the analyzer from service and escalate with clear CCR documentation.
That is successful troubleshooting.