Biegler BW 485L
Biegler · Model BW 485L
Temperature can be set from 37 degrees C to 41 degrees C in 0,5 degree C increments Horizontal heating cylinder facilitates operation Several transfusions/infusions can be warmed at the same time Easy to read display Splash waterproof (IPX4) Low temperature alarm Extremely safe with permanently running self-tests Integral service interface for PC
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.
Heating element / cartridge fault
HighSymptoms: No heat, or overheat alarm.
Root cause: Heater element or thermal cutoff failure.
Temperature sensor drift
MediumSymptoms: Delivered fluid temperature out of set range.
Root cause: Inline/probe sensor aging or miscalibration.
Air-in-line detector fault
HighSymptoms: False or missed air-in-line alerts.
Root cause: Air detector sensor drift or dirty optics.
Disposable tubing set leak / seating fault
MediumSymptoms: Fluid leak, or won't prime.
Root cause: Worn cassette/tubing seat or cracked fitting.
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.
Disposable tubing / cassette set
Single-use consumable.
Class ConsumableRel. cost $R&R Easy
Heating element / plate
Class Periodic replacementRel. cost $$$R&R Moderate
Temperature sensor / probe
Consumable in some designs.
Class Periodic replacementRel. cost $$R&R Fairly easy
Air-in-line sensor
Safety-critical; verify at PM.
Class Major service partRel. cost $$$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Disposable tubing / cassette set Single-use consumable. | Consumable | $ | Easy |
| Heating element / plate | Periodic replacement | $$$ | Moderate |
| Temperature sensor / probe Consumable in some designs. | Periodic replacement | $$ | Fairly easy |
| Air-in-line sensor Safety-critical; verify at PM. | Major service part | $$$ | 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.
- ·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: Heating element / cartridge fault
- Confirm the presentation - typically no heat, or overheat alarm - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: heater element or thermal cutoff 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 / plate 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: Temperature sensor drift
- Confirm the presentation - typically delivered fluid temperature out of set range - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: inline/probe sensor aging or miscalibration.
- 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 temperature sensor / probe 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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