Chattanooga OptiFlex K1
Chattanooga · Model OptiFlex K1
Weighs just 23 lbs (10.4 kg), making it the lightest knee CPM on the market Only 38 inches (97 cm) long Wide low-profile, closed-base frame for stability Faster motor speed Single screw drive Reversible footplate for shorter legs ROM -10 to 120 On-board power supply Patient lockout feature Accommodates patients 4 ft to 6.6 ft (1.2 m - 2 m)
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
Failure patterns typical of this equipment class - general BMET reference, not verified against this exact unit's own service history unless flagged. Severity is a category-level estimate.
Motor / actuator wear
MediumSymptoms: Weak or erratic motion.
Root cause: Gear/motor fatigue.
Range-of-motion limit switch fault
MediumSymptoms: Won't reach set ROM, sudden stop.
Root cause: Limit switch or encoder wear.
Frame / joint pad wear
LowSymptoms: Patient discomfort, loose fit.
Root cause: Foam/pad compression over use.
Serviceable Parts & Consumables
The parts a BMET typically services on this class of equipment. Service class and relative cost are general engineering estimates for the category, not figures from this unit's documentation. Part numbers appear only when pulled from this unit's own service manual. Always confirm intervals and pricing against the manufacturer.
Frame joint pad
Patient-contact consumable.
Class Periodic replacementRel. cost $R&R Easy
Drive motor / actuator
Class Periodic replacementRel. cost $$$R&R Difficult
ROM limit switch
Class Periodic replacementRel. cost $$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Frame joint pad Patient-contact consumable. | Periodic replacement | $ | Easy |
| Drive motor / actuator | Periodic replacement | $$$ | Difficult |
| ROM limit switch | Periodic replacement | $$ | 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 structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Motor / actuator wear
- Confirm the presentation - typically weak or erratic motion - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: gear/motor fatigue.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the drive motor / actuator per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Symptom: Range-of-motion limit switch fault
- Confirm the presentation - typically won't reach set ROM, sudden stop - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: limit switch or encoder wear.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the rOM limit switch per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
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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