Roche Cobas 6000
Roche · Model Cobas 6000
Improved efficiency Cobas 6000 analyzer series can consolidate more than 95% of the routine workload of clinical chemistry and immunochemistry testing. Greater flexibility Cobas 6000 analyzer series is tailor-made based on an individualized workflow analysis of the laboratory. Through on-site upgrades of up to 3 modules in 7 different combinations, its modular design can grow with the laboratory, securing the investment in the future. Improved safety Data management capabilities via internet link, such as full traceability of work area internal processes, full system data backup, direct access to latest updates of application information for reagents, calibrators and controls and additional service options supports the evolving standard of good laboratory practice. e-services ensuring operational convenience and safety for around the clock operation. More convenience The unique concept of the Cobas c pack and the Cobas e pack with a large variety of ready-to-use reagents allows convenient reagent handling and in over 90% of all reagents calibration is required only once per lot.
Key tips
- ·Run QC controls before trusting any repair - an analyzer that passes self-test can still report clinically wrong results.
- ·Rule out a reagent lot change before opening the instrument - it can look exactly like a hardware fault.
- ·Centrifuge rotors have a hard retirement age/cycle limit regardless of visible condition - don't eyeball it.
Typical Failure Modes
Failure patterns typical of this equipment class - general BMET reference, not verified against this exact unit's own service history unless flagged. Severity is a category-level estimate.
Sample probe / pipette clog
MediumSymptoms: Aspiration error, short sample, carryover.
Root cause: Clot/crystal obstruction.
Reagent / wash flow fault
MediumSymptoms: Clogs, high blank, QC fail.
Root cause: Pump tube wear, air in line.
Temperature control fault
MediumSymptoms: Incubator out of range.
Root cause: Failed heater/fan or sensor.
Optics / lamp degradation
LowSymptoms: Low signal, wavelength drift.
Root cause: Lamp/LED or monochromator aging.
Serviceable Parts & Consumables
The parts a BMET typically services on this class of equipment. Service class and relative cost are general engineering estimates for the category, not figures from this unit's documentation. Part numbers appear only when pulled from this unit's own service manual. Always confirm intervals and pricing against the manufacturer.
Xenon / LED light source
Class Periodic replacementRel. cost $$$R&R Moderate
Centrifuge rotor & bearings
Class Major service partRel. cost $$$R&R Difficult
Incubator heater / fan
Class Periodic replacementRel. cost $$R&R Moderate
Sample aspiration probe
Frequent R&R on high-throughput analyzers.
Class Periodic replacementRel. cost $$$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Xenon / LED light source | Periodic replacement | $$$ | Moderate |
| Centrifuge rotor & bearings | Major service part | $$$ | Difficult |
| Incubator heater / fan | Periodic replacement | $$ | Moderate |
| Sample aspiration probe Frequent R&R on high-throughput analyzers. | Periodic replacement | $$$ | Moderate |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Daily QC controls run and reviewed
- ·Calibration verification per assay
- ·Routine cleaning and decontamination
- ·Scheduled reagent-path and pump-tubing maintenance
Troubleshooting Approach
A structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Sample probe / pipette clog
- Confirm the presentation - typically aspiration error, short sample, carryover - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: clot/crystal obstruction.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the sample aspiration probe per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Symptom: Reagent / wash flow fault
- Confirm the presentation - typically clogs, high blank, QC fail - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: pump tube wear, air in line.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the peristaltic pump tubing per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Technical Specs
- Height
- 130 cm
- Sample Capacity
- 150 Samples/ 30 racks on 2 trays
- Throughput
- 600 samples/hr
- Length
- 98 cm
- Weight
- 425 - 1,000 KG
- Sample Volume
- 1 to 35 µL
- Width
- 1850 - 4,250 cm
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Central / core laboratory
- Point-of-care testing stations
- Blood bank
- Microbiology lab
Documents & Manuals
Safety & Recalls
Synced live from the FDA openFDA API.
- RECALL
Quality issue with high pressure solenoid valves may cause inaccurate results.
- RECALL
A warning is being added to the cobas 6000 MODULAR Series System - c501 and the cobas 8000 MODULAR Analyzer Series - c502 Operator Manuals to prevent operator injury during maintenance.
- RECALL
Roche has confirmed that a possible sample mismatch issue may occur on the MODULAR ANALYTICS E 170 module, cobas e 601 analyzer, or cobas e 602 analyzer due to a software limitation.
- RECALL
Due to a design change in 2015, corrosion on the sample probe electrical contacts can occur and lead to a disturbance of the sample liquid level detection (LLD). When disturbance of the sample liquid level detection (LLD) occurs, the affected sample probe may dip into the sample material deeper than intended. This may lead to carryover and medical risk cannot be excluded.
- RECALL
Some data alarm flags do not transfer from the analyzer to the laboratory information system, since not all data flags are recognized by the instrument manager/middleware.
- RECALL
Incorrect results: CRP assays may be calculated using incorrect calibration parameters which could result in falsely high or falsely low patient results being reported.
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