Dornier MedTech Compact Sigma
Dornier MedTech · Model Compact Sigma
A versatile modular lithotripter. The Compact Sigma, a versatile modular lithotripter, combines proven Dornier Extracorporeal Shock Wave Lithotripsy (ESWL) with a multi-functional patient table and X-ray C-arm to create the complete solution for lithotripsy and endourological procedures. When combined with other items such as ultrasound, lasers, scopes, etc. the Compact Sigma becomes a complete multifunctional workstation.
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.
Delivered agent concentration inaccurate
HighSymptoms: Agent analyser shows the output does not match the dial beyond the vaporiser's stated tolerance.
Root cause: The vaporiser is out of calibration - recalibration is done only at an authorised service centre.
Back-bar / mounting leak
MediumSymptoms: Machine leak test fails with this vaporiser fitted, agent smell.
Root cause: Worn back-bar O-rings / mounting seal, or the vaporiser not fully locked / Selectatec latched onto the manifold.
Filling / drain fault
MediumSymptoms: Will not fill (keyed or funnel filler), spills, or overfills; sight glass hard to read.
Root cause: Worn filler seal / valve, or the wrong agent bottle adapter.
Concentration-dial / interlock fault
MediumSymptoms: Dial stiff, will not turn past the 0 / T interlock, or does not stay at a setting; Selectatec interlock not releasing.
Root cause: Worn dial detent / interlock or an internal control-cone fault.
Tipped / contaminated with agent in the bypass
LowSymptoms: Grossly high output for a period after the vaporiser was tipped or moved.
Root cause: Agent carried into the bypass channel after tipping - purge at high flow before clinical use.
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.
Back-bar / mounting O-ring & seal kit
Class Periodic replacementRel. cost $R&R Fairly easy
Filler seal / valve
Class Periodic replacementRel. cost $R&R Fairly easy
Agent-specific fill adapter
Class Major service partRel. cost $R&R Easy
Vaporiser recalibration (authorised service centre)
Vaporizers are calibrated only at an authorised service centre.
Class Frequent wear itemRel. cost $$R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Back-bar / mounting O-ring & seal kit | Periodic replacement | $ | Fairly easy |
| Filler seal / valve | Periodic replacement | $ | Fairly easy |
| Agent-specific fill adapter | Major service part | $ | Easy |
| Vaporiser recalibration (authorised service centre) Vaporizers are calibrated only at an authorised service centre. | Frequent wear item | $$ | Easy |
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: Concentration inaccurate
- Verify output with a calibrated agent analyser at ~5 L/min O2, 21 +/- 2 C, across the dial range.
- Confirm the correct agent is in the vaporiser.
- Rule out a back-bar leak (machine leak test).
- If output is out of spec, send the vaporiser to an authorised service centre for recalibration.
- Check the calibration certificate for the due date.
Symptom: Back-bar leak or fill fault
- Reseat and fully lock / latch the vaporiser on the manifold.
- Replace the back-bar O-rings / mounting seal.
- Repeat the anaesthesia machine leak test.
- Inspect the filler seal / valve and use the correct agent adapter.
- Purge at high flow if the vaporiser was tipped.
Documents & Manuals
No documents available for this device yet.
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