Drager Evita V500

Asset Type

Ventilator

Manufacturer

Drager

Model

Evita V500

What This Guide Helps With

Alarm system failure causing loss or reduction of audible alarms, impacting patient monitoring and safety alerting.

Step-by-Step Troubleshooting

Ensure Patient Safety First

• Immediately remove the ventilator from patient use if alarm audibility is compromised
• Transfer the patient to a functioning ventilator
• Confirm patient is stable and adequately ventilated

Verify the Reported Alarm and Behavior

• Power on the ventilator and confirm “Alarm system failure” message
• Check if audible alarms are absent, weak, or distorted
• Verify if visual alarms are still functioning
• Note when the alarm occurs (startup vs during operation)

Check Alarm Volume Settings

• Access alarm settings menu
• Ensure volume is not muted or set to minimum
• Increase volume to maximum
• Trigger a test alarm if available

Inspect External Speaker Openings

• Check speaker vents for blockage (tape, debris, fluid)
• Clean externally per facility guidelines
• Ensure sound path is unobstructed

Perform Power Cycle and Self-Test

• Power off the ventilator
• Wait at least 30 seconds
• Power on and observe startup diagnostics
• Check if alarm clears

Check for Consistency Across Alarm Types

• Trigger different alarms while device is off patient
• Observe if any alarms produce sound
• Compare high and low priority alarm outputs

If the Problem Persists

If audible alarms remain nonfunctional after external checks:

• External causes have been ruled out
• This indicates internal alarm system or speaker failure
• Remove device from service
• Label Out of Service
• Send for repair or bench evaluation

Clinical Use Tip

Never troubleshoot alarm issues on an active patient. Always transfer the patient to a backup ventilator before continuing.

Work Order Documentation (CCR Method)

CCR = Complaint, Cause, Resolution

Complaint

What was reported by the clinical staff.

Example:
"Ventilator displaying 'Alarm system failure' with no audible alarms present."

Cause

What was observed during troubleshooting.

Example:
"No audible output after confirming volume settings and unobstructed speaker vents, indicating internal speaker failure."

Resolution

What action was taken.

Example:
"Removed ventilator from service, labeled Out of Service, and sent for repair."

Helpful Details to Include (If Known)

• Alarm behavior
• Accessories swapped
• Power behavior
• Environmental factors
• Indicator lights
• Final device status

Final Thought

Alarm systems are a critical safety layer in ventilation. If audible alarms are compromised, the device cannot be safely used. Always troubleshoot external causes first, then escalate appropriately.

That is successful troubleshooting.