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What This Guide Helps With
This guide addresses situations where the Drager Perseus anesthesia machine:
- Fails to complete the startup self-test
- Displays error codes or warnings during power-on
- Does not enter normal operational mode
Focus is on external, logical checks first—power, connections, and setup—before assuming internal failure.
Step-by-Step Troubleshooting
Verify Power Source
- Ensure the machine is plugged into a properly rated, live outlet.
- Check for tripped circuit breakers or unplugged power cords.
- Reason: Insufficient or unstable power can prevent self-test completion.
Check Battery / UPS Status
- Confirm internal battery or UPS (if installed) is charged and connected.
- Reason: Low or missing battery can trigger startup failures even on mains power.
Inspect External Connections
- Detach and reattach all external modules, monitors, and gas supplies.
- Ensure gas cylinders are opened or piped gases are online.
- Reason: The machine may fail self-test if it detects missing critical modules or gas supply.
Check for Error Messages or Codes
- Document any displayed error codes.
- Cross-reference with Drager troubleshooting charts (without opening the unit).
- Reason: Codes can indicate specific subsystems preventing startup.
Restart Procedure
- Power down the machine, wait 30 seconds, then power back on.
- Reason: Temporary software or sensor glitches can cause self-test failures.
Environmental Check
- Ensure ambient temperature and humidity are within operating limits.
- Reason: Extreme environmental conditions can cause startup errors.
If the Problem Persists
All external checks have been performed. The issue is likely internal (e.g., software, electronics, or sensor failure).
Action:
- Remove the machine from service
- Label it “Out of Service”
- Send for Drager service or bench evaluation
Note: Knowing when to escalate is proper troubleshooting—do not attempt internal repairs yourself.
Clinical Use Tip
- Do not attempt to use the machine on a patient while the self-test fails.
- Move the patient to an alternate anesthesia machine before troubleshooting further.
- Always ensure backup oxygen and ventilation options are available.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
“Machine fails startup self-test and displays error code 105.”
Cause
What was observed during troubleshooting.
Example:
“Power and external connections verified; error persists on multiple restart attempts.”
Resolution
What action was taken.
Example:
“Machine removed from service, labeled Out of Service, and sent to vendor for evaluation.”
Helpful Details to Include
- Outlet tested with multimeter or known-working device
- Circuit breakers and power strips checked
- Battery/UPS charge level documented
- Gas supply status verified
- Error codes displayed noted
- Final status: Out of Service
Final Thought
Patient safety is the top priority. Logical troubleshooting ensures external, easily verifiable issues are addressed first. Proper escalation and documentation prevent patient risk and equipment misuse.
That is successful troubleshooting.