Thermo Fisher Scientific Shandon Citadel 2000
Thermo Fisher Scientific · Model Shandon Citadel 2000
The Citadel 2000 has a 110-cassette capacity Reagent stations are easily removed from the unit for replenishing Delayed-start feature may be programmed up to 9 days in advance Hand-held touch key controller is simple to use Store up to 4 complete programs in the Citadels memory Program immersion time during each step Loading station protects tissue baskets from air as the baskets are raised User is protected from open containers The unit fits in most standard fume cabinets, as well as the Shandon Hyperclean 2 Work Station Optional vacuum unit facilitates efficient and rapid wax infiltration of specimens Has 10 reagent containers and 2 wax baths Random and organized baskets available Tissue baskets load and unload easily with hanger clips in the units hood.
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
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Reagent / paraffin transfer or handling fault
HighSymptoms: Stations not filling or draining, retort not filling (processor), transport arm mis-places baskets, error alarm halts the run.
Root cause: Worn pump / valve, a blocked line, a level-sensor fault, or a transport-drive / gripper fault.
Retort / chamber pressure or vacuum fault (processor)
MediumSymptoms: Pressure / vacuum not achieved, poor infiltration, seal alarm.
Root cause: Worn retort door seal, a vacuum / pressure-pump fault, or a valve.
Poor or inconsistent staining
MediumSymptoms: Slides over- / under-stained, uneven, station-time drift.
Root cause: Exhausted reagents, wrong programme, incorrect agitation, or a timing / arm fault.
Heater / paraffin-bath / oven fault
MediumSymptoms: Paraffin not molten or too hot, oven not at temperature, bath alarm.
Root cause: Heater or temperature-sensor fault.
Fume-extraction / carbon-filter fault
LowSymptoms: Reagent fumes in the room, filter-change overdue.
Root cause: Saturated carbon filter or a fan fault.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Reagent / paraffin pump & valves
Class Periodic replacementRel. cost $$$R&R Difficult
Retort / reagent-vessel seals
Class Periodic replacementRel. cost $$R&R Fairly easy
Transport-arm drive / gripper (stainer)
Class Periodic replacementRel. cost $$$R&R Difficult
Bath / oven heater & temperature sensor
Class Major service partRel. cost $$R&R Moderate
Activated-carbon fume filter
Class Frequent wear itemRel. cost $R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Reagent / paraffin pump & valves | Periodic replacement | $$$ | Difficult |
| Retort / reagent-vessel seals | Periodic replacement | $$ | Fairly easy |
| Transport-arm drive / gripper (stainer) | Periodic replacement | $$$ | Difficult |
| Bath / oven heater & temperature sensor | Major service part | $$ | Moderate |
| Activated-carbon fume filter | Frequent wear item | $ | Easy |
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 starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: QC / calibration failure across a channel or the whole system
- Run fresh controls at all levels and note which analytes fail.
- Confirm reagents are in date, correctly loaded, mixed and not bubbled.
- Run the photometer / lamp-energy check and replace the lamp if energy is low.
- Clean the sample and reagent probes, the mixers and the wash / cuvette-wash stations.
- Recalibrate the affected assay / ISE module and re-run QC.
Symptom: Sample or reagent probe clog / crash / short aspiration
- Inspect the probe for a bend or blockage and clear it (wire / sonicate per the manual).
- Run the fluidics prime and the probe-wash cycle.
- Check for a clot or fibrin in the sample and the liquid-level sensing.
- Verify probe positioning / alignment.
- Replace the probe if aspiration is still short.
Symptom: ISE electrolyte results biased or noisy / ISE calibration fails
- Run the ISE calibration and check the slope / drift against spec.
- Replace an ISE electrode or the reference that is at end of life.
- Check the ISE pinch valves and tubing for wear or air.
- Confirm the ISE standard packs are in date.
- Re-run ISE QC before releasing electrolyte results.
Symptom: High cuvette blanks / position-dependent results
- Run the cuvette blank / photometric check.
- Clean or replace worn / scratched cuvettes or the reaction segment.
- Check the cuvette-wash station nozzles and drying.
- Confirm the water / DI supply quality.
- Recalibrate and re-run QC.
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
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