Drager Isolette C2000 Infant Incubator

Asset Type

Infant Incubator

Manufacturer

Drager

Model

Isolette C2000

What This Guide Helps With

This guide addresses situations where the Drager Isolette C2000 displays temperature control errors, overheats, underheats, or fails to maintain the set temperature.

The focus is on logical, external, and easily verifiable causes first—such as probe placement, airflow obstruction, door seals, and configuration settings—before assuming internal heater, sensor, or control board failure.

Step-by-Step Troubleshooting

1. Ensure Patient Safety First

• If the incubator is actively being used, transfer the infant to another verified working incubator before troubleshooting.
• Do not attempt troubleshooting while supporting a patient inside the unit.
• Why: Temperature instability can directly impact neonatal safety.

2. Verify Mode of Operation (Air Mode vs. Skin Mode)

• Confirm whether the incubator is operating in Air Temperature Mode or Skin (Servo) Mode.
• Verify the correct setpoint for the selected mode.
• Why: Incorrect mode selection can create perceived overheating or underheating.

3. Check Skin Probe (If in Servo Mode)

• Ensure the skin probe is securely connected to the incubator.
• Inspect the probe cable for damage.
• Confirm proper probe placement on the infant (abdomen, secure adhesion).
• If available, test with a known good probe.
• Why: A disconnected or faulty probe can cause runaway heating or false low-temperature readings.

4. Inspect Air Temperature Sensor Area

• Check that the internal air sensor is not obstructed.
• Look for buildup of lint, debris, or residue.
• Why: Obstructed airflow around the sensor can cause inaccurate readings.

5. Check Doors, Access Ports, and Seals

• Ensure all portholes and access doors are fully closed.
• Inspect door gaskets for gaps or damage.
• Why: Air leaks commonly cause low-temperature alarms or inability to maintain setpoint.

6. Inspect Air Circulation

• Listen for the circulation fan operating normally.
• Check for unusual noise or lack of airflow.
• Ensure nothing is blocking internal air vents.
• Why: Poor circulation leads to temperature stratification and control instability.

7. Evaluate Heater Function

• In a safe, empty unit, monitor temperature rise from ambient to setpoint.
• Confirm steady, gradual temperature increase.
• Watch for overshoot beyond setpoint.
• Why: Overshoot may indicate sensor calibration issues or control instability. Failure to heat suggests heater or power delivery problems.

8. Verify Calibration Status

• Review last preventive maintenance date.
• If temperature deviation is suspected, compare displayed temperature with a calibrated external thermometer during controlled testing.
• Why: Sensor drift over time can cause inaccurate control.

9. Check for Error Codes or Alarm Messages

• Document exact wording of alarms.
• Clear alarms and observe recurrence pattern.
• Why: Repeating alarms may indicate internal sensor or control board faults.

If the Problem Persists

If:

• External probes and connections are verified
• Doors and airflow are normal
• Calibration checks fail or instability continues

Then the issue is likely internal (temperature sensor failure, heater malfunction, control board fault).

• Remove the incubator from service
• Label it Out of Service
• Send for bench evaluation and repair

Knowing when to stop is proper troubleshooting. Neonatal temperature control is not an area for extended field experimentation.

Clinical Use Tip

Never troubleshoot temperature instability with a neonate inside the incubator.

Always move the patient to a verified safe unit first.

Document temperature deviations carefully if they occurred during use.

Work Order Documentation (CCR Method)

CCR = Complaint, Cause, Resolution

Complaint

What was reported by the clinical staff.

Example:
“Incubator alarming for high temperature and not maintaining setpoint in servo mode.”

Cause

What was observed during troubleshooting.

Example:
“Skin probe cable intermittently open; unit defaulted to uncontrolled heating response.”

Resolution

What action was taken.

Example:
“Replaced skin probe with known good probe, verified stable temperature control in servo mode. Unit returned to service.”

Helpful Details to Include

• Operating mode (Air or Servo)
• Set temperature vs. actual temperature
• Probe condition
• Door seal condition
• Fan operation status
• External thermometer comparison results
• Any alarm codes displayed
• Final device status

Final Thought

Incubator temperature control issues must always be approached with patient safety first. Most problems originate from probe placement, airflow disruption, or configuration errors rather than internal failure. A calm, structured troubleshooting process prevents unnecessary downtime and protects neonatal patients.

That is successful troubleshooting.