Medical International Research Spirodoc
Medical International Research · Model Spirodoc
Touch screen. Non-invasive. Patient eDiary. On-screen results. Home care symptoms diary. 6-Minute Walk Test. Triaxial Accelerometer. Capable of sleep desaturation study. Respiratory Rehabilitation Monitoring. Activity Monitoring. Long life rechargeable battery. Wireless real time test on PC via Bluetooth. May be used for both home and office use.
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.
Fails calibration / calibration-syringe check
HighSymptoms: 3 L syringe check outside tolerance, volume / flow drift over the day, biological control out of range.
Root cause: Flow-sensor contamination or wear (pneumotach / turbine / ultrasonic), a leak, or ambient (BTPS) correction not set.
Flow-sensor fault / leak
MediumSymptoms: Erratic traces, poor repeatability, back-extrapolated volume errors.
Root cause: Worn or wet flow sensor, a damaged filter seat, or a leak in the tubing / mouthpiece connection.
Gas-analyser fault (DLCO / lung volumes)
MediumSymptoms: DLCO or FRC results implausible, gas-analyser calibration fails, drift.
Root cause: CO / CH4 / He / tracer analyser drift or an analyser fault, or a demand-valve / gas-supply issue.
Plethysmograph door / pressure-transducer fault (body box)
MediumSymptoms: Box pressure will not stabilise, thermal drift, door-seal leak.
Root cause: Door seal, the box pressure transducer, or thermal equilibration.
PC / software / printer fault
LowSymptoms: Test hangs, results will not save, print or export.
Root cause: Workstation PC, software, or the printer.
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.
Flow sensor (pneumotach / turbine / ultrasonic)
Class Periodic replacementRel. cost $$R&R Fairly easy
Calibration syringe (3 L)
Calibrate / verify the syringe periodically.
Class Major service partRel. cost $$R&R Easy
Gas analyser cell (DLCO / lung-volume systems)
Class Periodic replacementRel. cost $$$R&R Moderate
Plethysmograph door seal / pressure transducer
Class Periodic replacementRel. cost $$R&R Moderate
Sample lines / demand valve
Class Frequent wear itemRel. cost $R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Flow sensor (pneumotach / turbine / ultrasonic) | Periodic replacement | $$ | Fairly easy |
| Calibration syringe (3 L) Calibrate / verify the syringe periodically. | Major service part | $$ | Easy |
| Gas analyser cell (DLCO / lung-volume systems) | Periodic replacement | $$$ | Moderate |
| Plethysmograph door seal / pressure transducer | Periodic replacement | $$ | Moderate |
| Sample lines / demand valve | Frequent wear item | $ | Fairly 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: Fails the calibration-syringe check
- Confirm ambient temperature / pressure / humidity are entered and BTPS correction is on.
- Fit a fresh flow sensor / filter and repeat the 3 L syringe check at several flow rates.
- Leak-test the sensor-to-mouthpiece connection.
- Run a biological control (a healthy known subject).
- Replace the flow sensor if it will not hold calibration.
Symptom: DLCO / lung-volume results implausible
- Run the gas-analyser calibration and check for drift.
- Confirm the test-gas cylinder is correct and not empty.
- Leak-test the breathing circuit and demand valve.
- Run a biological control.
- Replace the analyser cell or refer the analyser if calibration will not hold.
Technical Specs
- Height
- 48 mm
- Length
- 16 mm
- Weight
- 99 g
- Width
- 101 mm
Documents & Manuals
No documents available for this device yet.
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