Chattanooga OptiFlex 3
Chattanooga · Model OptiFlex 3
Easy to read backlit display Force Reversal safety feature Independent delay time Patient lockout feature Quick conversion from adult to pediatric.
Key tips
- ·Most "no output" stim-unit complaints are cable-side - check electrode/lead continuity before assuming a unit fault.
- ·Frame and strap wear on mechanical rehab equipment is a real fall/injury risk - don't defer it as cosmetic.
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.
Carriage will not move / motor fault
HighSymptoms: The CPM carriage does not move, stalls, or moves in only one direction; motor noise.
Root cause: Worn drive motor / leadscrew, a hand-control fault, or a control-board fault.
Range-of-motion / end-stop inaccuracy
MediumSymptoms: Set flexion / extension angles not reached, or the carriage overshoots / stalls short.
Root cause: Position-sensor / potentiometer drift or a limit-switch fault.
Hand control / patient-control fault
MediumSymptoms: Hand control unresponsive, the patient stop / go-back button does not work.
Root cause: Worn hand control or a damaged cable.
Frame / carriage bearing wear
MediumSymptoms: Rough or noisy travel, play in the carriage.
Root cause: Worn carriage bearings / slides.
Power / battery fault
LowSymptoms: Will not power on, or short battery run time (if battery-equipped).
Root cause: Power supply / fuse or an aged battery.
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.
Drive motor / leadscrew
Class Major service partRel. cost $$$R&R Difficult
Position sensor / potentiometer
Class Major service partRel. cost $$R&R Moderate
Hand control
Class Periodic replacementRel. cost $$R&R Fairly easy
Carriage bearings / slides
Class Major service partRel. cost $$R&R Moderate
Power supply / fuse
Class Major service partRel. cost $R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Drive motor / leadscrew | Major service part | $$$ | Difficult |
| Position sensor / potentiometer | Major service part | $$ | Moderate |
| Hand control | Periodic replacement | $$ | Fairly easy |
| Carriage bearings / slides | Major service part | $$ | Moderate |
| Power supply / fuse | Major service part | $ | Moderate |
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.
- ·Frame and strap wear inspection
- ·Electrode lead continuity check
- ·Annual electrical safety test
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: Carriage will not move
- Confirm mains power / battery and any e-stop / patient stop is released.
- Try the hand control and, if fitted, the unit buttons to isolate the control.
- Listen for the drive motor.
- Check the leadscrew is not jammed.
- Replace the hand control, motor or control board as isolated.
Symptom: ROM angles not reached
- Run the calibration / homing routine.
- Check the position sensor / potentiometer and the limit switches.
- Verify the achieved angles with a goniometer.
- Replace the position sensor if it drifts.
- Re-verify the ROM range and the patient stop function.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Physical therapy / rehab gym
- Outpatient rehab clinic
- Sports medicine
Documents & Manuals
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