Human Diagnostics Elisa Washer
Human Diagnostics · Model Elisa Washer
Microplate Washer This Elisa Washer is a self-contained microplate washer featuring keypad entry of wash parameters, including the number of rows to process and the type of plate being washed. In addition, up to seven different wash sequences can be entered by the user and saved as reusable programs in nonvolatile memory.
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.
Absorbance / QC out of tolerance
HighSymptoms: Readings biased or noisy, calibration / self-test fails, poor plate-to-plate reproducibility.
Root cause: Lamp / LED ageing, dirty optics or filters, or a filter-wheel fault.
Plate-transport / carriage fault
MediumSymptoms: Plate not drawn in or positioned, carriage-error message, wells read at the wrong position.
Root cause: Worn transport belt / motor or a position-sensor fault.
Wash-manifold fault (washers)
MediumSymptoms: Wells not aspirated / dispensed evenly, high residual volume, needles blocked.
Root cause: Blocked or bent manifold needles, or a pump / vacuum fault.
Filter / optics fault
MediumSymptoms: A specific wavelength reads wrong, filter not found.
Root cause: Damaged interference filter or a filter-wheel position fault.
PC / printer / LIS fault
LowSymptoms: Results will not calculate, print or transfer.
Root cause: Onboard software, printer, or the interface.
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.
Lamp / LED source
Class Periodic replacementRel. cost $$R&R Fairly easy
Interference filters / filter wheel
Class Major service partRel. cost $$R&R Moderate
Plate-transport belt / motor
Class Periodic replacementRel. cost $$R&R Moderate
Wash-manifold needles / pump tubing (washers)
Class Frequent wear itemRel. cost $R&R Fairly easy
Optics / detector board
Class Major service partRel. cost $$$R&R Difficult
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Lamp / LED source | Periodic replacement | $$ | Fairly easy |
| Interference filters / filter wheel | Major service part | $$ | Moderate |
| Plate-transport belt / motor | Periodic replacement | $$ | Moderate |
| Wash-manifold needles / pump tubing (washers) | Frequent wear item | $ | Fairly easy |
| Optics / detector board | Major service part | $$$ | Difficult |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
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: Absorbance or QC out of tolerance
- Run the self-test and any absorbance-verification plate.
- Clean the optical path and inspect the filters.
- Check the lamp / LED energy and replace it if low.
- Read a known standard / QC plate.
- Escalate an optics / detector fault to the OEM.
Symptom: Plate transport or wash fault
- Clear any jammed plate and check the carriage moves freely.
- Inspect the transport belt and position sensor.
- For a washer, unblock / straighten the manifold needles and check the pump and vacuum.
- Run a wash-performance check (residual volume).
- Replace the belt, needles or pump tubing as isolated.