Cincinnati Sub-Zero Warm Air
Cincinnati Sub-Zero · Model Warm Air
Improve patient safety and patient outcomes The WarmAir® system from CSZ safely provides effective air warming therapy to your patient. Because of the unique patented design of our WarmAir® FilteredFlo® blankets, we can utilize a lower velocity blower which supplies gently moving, clean air that minimizes unwanted air currents that may spread contaminants to your patient or staff. All air is filtered before being distributed to the air blanket to prevent airborne bacterial contamination in critical areas. The warmed air is then filtered again as it leaves the FilteredFlo® warming blanket.
Key tips
- ·Never skip temperature-accuracy verification to save time - it's the one check that directly prevents burns.
- ·Hose/blanket connector wear is the most common real fault and the easiest to miss on a quick visual check.
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.
Heater / element fault
MediumSymptoms: No heat, overheat alarm.
Root cause: Element or thermal fuse failure.
Temperature sensor drift
MediumSymptoms: Setpoint error, alarm.
Root cause: Sensor aging.
Fan / airflow failure
LowSymptoms: Uneven warming, hotspot.
Root cause: Blower wear.
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.
Temperature probe
Consumable per patient.
Class Periodic replacementRel. cost $R&R Easy
Heating element / thermal fuse
Common R&R.
Class Periodic replacementRel. cost $$$R&R Moderate
Blower fan
Class Periodic replacementRel. cost $$R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Temperature probe Consumable per patient. | Periodic replacement | $ | Easy |
| Heating element / thermal fuse Common R&R. | Periodic replacement | $$$ | Moderate |
| Blower fan | Periodic replacement | $$ | 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.
- ·Hose / blanket connector inspection
- ·Temperature-accuracy verification
- ·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: Heater / element fault
- Confirm the presentation - typically no heat, overheat alarm - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: element or thermal fuse failure.
- 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 heating element / thermal fuse 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: Fan / airflow failure
- Confirm the presentation - typically uneven warming, hotspot - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: blower 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 blower fan 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.
Technical Specs
- Height
- 13.5 in
- Length
- 8.75 in
- Weight
- 13.5 lbs
- Width
- 8.75 in
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Operating Room
- PACU
- Emergency Department
- Labor & Delivery
- NICU
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
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
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
A component defect. The recalling firm determined that one of the connectors attached to the firm's WarmAir 134 device's Printed Circuit Board (PCB) can overheat. Should this event occur, the excess heat build up within the device may result in damage to the device's external case and/or melting of some of the internal components of the unit.
- 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
Product is labeled as "Sterile". It was observed that incomplete seals were created in the packaging materials during production. When the seal is compromised, the sterility of the product inside the package cannot be assured.
- RECALL
Burning smell, burned microprocessor board. The firm is modifying the connectors and wiring gauge configuration of the device.
Troubleshoot this device with Bio
Describe a symptom or error code. Bio answers from this device's own documented error codes, failure modes, parts, and guides.
Ask Bio →