MAQUET HEATER-COOLER UNIT HCU 20
MAQUET · Model HEATER-COOLER UNIT HCU 20
Independent temperature control of the patient and cardioplegia via separated water circuits Up to three external devices can be used simultaneously Fast and accurate temperature adjustment made possible by the split tank and automatically controlled mixing valve Reduced patient cooling times due to the exceptional cooling capacity of the highly effective ice-building system Silent operation – most surgeries can be performed without a running compressor Independent and precise flow control of the circuits allow the option of locating the unit outside the OR Minimized patient rewarming time due to the outstanding heating capacity and intelligent electronic management Gradient mode for physiologically optimized heating and cooling Proven patient safety and operating reliability ensured by the sophisticated electrical safety concept Simplified operation thanks to the user-friendly, flexible Control Unit with touch screen display Extremely short setup time required due to fast priming and automatic de-airing Polished stainless steel cabinet – easy to clean and damage resistant Easy to maneuvre using smooth running castor wheels with foot-lever operated brakes Hansen-quick couplings with icons facilitate fast and clear connection of oxygenator and cardioplegia heat exchangers Convenient and effective emptying of external devices
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.
Blower fan
Class Periodic replacementRel. cost $$R&R Fairly easy
Temperature probe
Consumable per patient.
Class Periodic replacementRel. cost $R&R Easy
Heating element / thermal fuse
Common R&R.
Class Periodic replacementRel. cost $$$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Blower fan | Periodic replacement | $$ | Fairly easy |
| Temperature probe Consumable per patient. | Periodic replacement | $ | Easy |
| Heating element / thermal fuse Common R&R. | Periodic replacement | $$$ | 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.
- ·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.
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
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