Cincinnati Sub-Zero Heat Therapy Unit
Cincinnati Sub-Zero · Model Heat Therapy Unit
Variety of safety alarms Self-calibrating microprocessor Select temperatures in 1°C increments.
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.
Motor / actuator / drive will not run or is weak
HighSymptoms: Traction force not applied, CPM carriage will not move or stalls, drive assist weak, motion one direction only.
Root cause: Worn drive motor / leadscrew / actuator, a hand-control fault, or a control-board fault.
Force / range / position inaccuracy
MediumSymptoms: Set traction force or CPM angle not reached, load cell drifts, carriage overshoots or stalls short.
Root cause: Load-cell / position-sensor drift, a potentiometer fault, or a limit-switch fault.
Hand control / patient-control fault
MediumSymptoms: Hand control unresponsive, the patient stop / reverse button does not work.
Root cause: Worn hand control or a damaged cable.
Frame / bearing / cable wear
MediumSymptoms: Rough or noisy travel, play in the carriage, frayed traction cord or rope.
Root cause: Worn bearings / slides or a frayed cable / cord.
Power / battery fault
LowSymptoms: Will not power on, short battery run time.
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 / actuator
Class Major service partRel. cost $$$R&R Difficult
Load cell / position sensor / potentiometer
Class Major service partRel. cost $$R&R Moderate
Hand control
Class Periodic replacementRel. cost $$R&R Fairly easy
Bearings / slides / traction cord
Class Periodic replacementRel. cost $$R&R Moderate
Power supply / fuse / battery
Class Major service partRel. cost $R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Drive motor / leadscrew / actuator | Major service part | $$$ | Difficult |
| Load cell / position sensor / potentiometer | Major service part | $$ | Moderate |
| Hand control | Periodic replacement | $$ | Fairly easy |
| Bearings / slides / traction cord | Periodic replacement | $$ | Moderate |
| Power supply / fuse / battery | 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: No or low output on a modality / channel
- Fit a fresh applicator / handpiece / electrodes for that modality.
- Substitute a known-good lead / cable.
- Test therapeutic-ultrasound output into a water bath (visible cavitation / warmth) and run the applicator-contact / BNR self-test.
- Try the modality on another unit if available.
- Escalate a confirmed output-stage fault to the OEM.
Symptom: Patient feels nothing / open-circuit on an e-stim channel
- Fit fresh self-adhesive electrodes on well-prepped skin.
- Swap the lead wires.
- Confirm the current ramps and there is no open-electrode alarm.
- Test the channel into a resistive load per the manual.
- Refer the output stage if a good lead set still gives nothing.
Symptom: Unresponsive or erratic touchscreen / parameters will not set
- Power-cycle the unit.
- Recalibrate / re-seat the touchscreen if the touch is offset.
- Check the mains fuse and power supply.
- Confirm the cooling fan runs and the vents are clear.
- Replace the touchscreen or power supply as isolated.
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
Safety & Recalls
Synced live from the FDA openFDA API.
- RECALL
Updated Manual-Warnigs have been added stating that exceeding 40'C for extended periods may cause tissue damage
- RECALL
Evidence supports that when customers performed a fuse replacement as part of a March 2017 field action, the fuse clips became stretched and were no longer mechanically tight with the fuse, creating a host spot that led to discoloration on the board due to overheating and shut down of the device.
- RECALL
Potential for membrane (control panel) switch errors leading to an inability of the device to change control settings or an unintended change to control settings.
- RECALL
Due to FDA's safety communication relating to nontuberculous mycobacteria (NTM) infections related to heater/cooler devices, an updated Instructions For Use includes a more robust cleaning & disinfection procedure.
- RECALL
Seals in the water path of the CT-99 cold therapy pad may separate during use, which could lead to a water leak.
- RECALL
The incorrect voltage component was placed into the device during manufacturing. This may make the device unable to maintain patient temperature during cooling mode. The device will continue to indicate that the unit is cooling because the compressor will continue to run, however water in the reservoir will begin to return to ambient temperature. The actual water temperature will be displayed but
- RECALL
During a label review it was discovered that both the Blanketrol III Operations (57201-N) & Operations & Technical (56201-Q) manuals had verbiage added back into the manual during ECN M111-4260 (released 12/29/2011) which was previously removed for clarification of the intended use and subsequent 501(K) approval.
- RECALL
Design error. The probe jack contacts (terminals on certain of the firm's ECMO Heater devices are located too close to the solid state relay contacts (terminals) which can lead to the terminals coming into contact with one another. If this situation occurs, a Service Technician, Operator/User, and/or Patient could be exposed to electric shock during device servicing or use. This situation was ori
- RECALL
The suspect hyper-hypothermia device systems sold to physicians for research and/or the treatment of AIDS or Cancer patients, were not appropriately cleared by the FDA prior to distribution.
- RECALL
Reports that the Rectal/ Esophageal Temperature Probes are not reading correctly. This situation causes the Blanketrol device, which the probes connect to, to shut down operation and display a 'check probe' error.
- RECALL
Cincinnati Sub-Zero is conducting a field correction due to changes that have been made to the WarmAir Model 135 devices Operation and Technical Manuals in order to comply with FDA device labeling regulations.
- RECALL
Due to its design the circuit breaker on the device could trip causing it to shut down and not provide heated air to the blanket.
- RECALL
The probe jack contacts (terminals) on certain of the firm's ECMO Heater devices are located too close to the solid state relay contacts (terminals) which can lead to the terminals coming into contact with each other. If this situation occurs, the service technician, user, and/or patient could be exposed to electric shock during servicing and/or use.
- RECALL
There is the potential that the power switch assembly can dislodge from the cabinet during use.
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