Precision Medical HeliO2
Precision Medical · Model HeliO2
Durable - tough housing and the control knob is recessed to prevent inadvertent changes. Modular - reduces maintenance time and can be maintained by all biomed departments. Versatile. User-Friendly.
Key tips
- ·Don't extend filter/tubing replacement intervals to save cost - this is an infection-control issue, not just a performance one.
- ·Flow accuracy drift is often the earliest sign of a failing sensor, well before an outright alarm.
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 O2 / He-O2 mix incorrect
HighSymptoms: FiO2 / mix does not match the setting, hypoxic-guard or mix alarm.
Root cause: Blender proportioning-valve fault, a supply-pressure imbalance, or a calibration issue.
Low or unequal inlet supply-pressure alarm
MediumSymptoms: Supply alarm, blender will not deliver at flow.
Root cause: Wall / cylinder supply pressure low or one gas missing, or an inlet filter / check-valve fault.
Flowmeter fault
MediumSymptoms: Flow does not match the setting, flowmeter float sticking.
Root cause: Worn flowmeter (rotameter) or a needle-valve fault.
Leak at fittings / bleed noise
LowSymptoms: Hiss, high gas consumption.
Root cause: Worn O-rings / seals at the inlet or outlet fittings, or the blender bleed.
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.
Proportioning valve / blender core
Class Major service partRel. cost $$$R&R Difficult
Inlet filters / check valves
Class Periodic replacementRel. cost $R&R Fairly easy
Flowmeter (rotameter)
Class Major service partRel. cost $$R&R Moderate
O-ring / seal kit
Class Frequent wear itemRel. cost $R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Proportioning valve / blender core | Major service part | $$$ | Difficult |
| Inlet filters / check valves | Periodic replacement | $ | Fairly easy |
| Flowmeter (rotameter) | Major service part | $$ | Moderate |
| O-ring / seal kit | Frequent wear item | $ | Fairly 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.
- ·Filter and tubing replacement
- ·Flow accuracy check
- ·Annual full PM
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: Delivered mix incorrect
- Verify the delivered O2 / mix with a calibrated analyser at the outlet.
- Confirm both inlet supply pressures are equal and within spec.
- Check the inlet filters and check valves.
- Calibrate / service the blender per the manual.
- Replace the proportioning valve / blender core if the mix is still wrong.
Symptom: Supply-pressure alarm
- Confirm both gas supplies are connected and at pressure.
- Check the inlet filters for blockage.
- Inspect the inlet check valves.
- Reseat / replace the supply hoses.
- Clear the alarm and re-verify the delivered mix.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Respiratory Therapy department
- Patient floors
- Emergency Department
- Home care (portable units)
Documents & Manuals
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