Philips Respironics LoFlo Sidestream
Philips Healthcare · Model Respironics LoFlo Sidestream
Ideal for non-intubated patients. Proprietary sample cell protects internal NDIR components from contamination. Common connector allows easy exchange between mainstream and sidestream monitoring. Robust and long life pump reduces periodic maintenance. No calibration required. Unique accessories & supplies for all patients.
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.
Gas / SpO2 / tcpO2 readings drift or need calibration
HighSymptoms: CO2, O2, agent or tcpO2/tcpCO2 values off vs a reference, calibration prompts.
Root cause: Sensor aging, a missed calibration, or the wrong calibration gas; (tcpO2) an old membrane / electrolyte.
Module not recognised by the host
MediumSymptoms: Host monitor (IntelliVue / MP series) does not display the module or MMS.
Root cause: Docking / rack connector or cable fault.
Water trap full / sample-line occlusion
MediumSymptoms: Occlusion or water-trap alarm, no or low sample flow, flat waveforms.
Root cause: Full or expired water trap, or a blocked / kinked sample line.
Cable / connector wear
LowSymptoms: Intermittent signal with cable movement.
Root cause: Worn patient cable.
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.
Patient cable set
Class Frequent wear itemRel. cost $$R&R Easy
Water trap / sample line
Class ConsumableRel. cost $R&R Easy
O2 / CO2 sensor or gas-bench service
Class Frequent wear itemRel. cost $$R&R Fairly easy
Module / MMS docking connector
Class Major service partRel. cost $$R&R Moderate
Internal sample pump
Class Periodic replacementRel. cost $$$R&R Difficult
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Patient cable set | Frequent wear item | $$ | Easy |
| Water trap / sample line | Consumable | $ | Easy |
| O2 / CO2 sensor or gas-bench service | Frequent wear item | $$ | Fairly easy |
| Module / MMS docking connector | Major service part | $$ | Moderate |
| Internal sample pump | Periodic replacement | $$$ | 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: Gas / SpO2 readings drift
- Fit a fresh water trap and sample line.
- Run the module's calibration with the correct calibration gas.
- Calibrate or replace the O2 / CO2 sensor (or the tcpO2 membrane / electrolyte).
- Let the module warm up fully.
- Verify against a reference gas mix.
Symptom: Module not recognised
- Reseat the module / MMS at the host or rack.
- Inspect the docking connector for bent pins.
- Try it in another host or slot.
- Try a known-good module in this slot.
- Refer the module or host slot as isolated.
Documents & Manuals
No documents available for this device yet.
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