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What This Guide Helps With
This guide helps troubleshoot the POWER FAIL alarm on a Drager Apollo anesthesia machine. This alarm may occur when AC power is lost, the machine is operating on battery, or a device connected to an auxiliary outlet has caused a short-circuit condition.
A POWER FAIL alarm can affect ventilation support, gas delivery readiness, monitoring, and powered accessories. Treat the alarm as a patient safety issue first, then work through external power and accessory checks before suspecting an internal machine fault.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Confirm the patient is being safely ventilated.
- If the anesthesia machine is in active use, notify anesthesia staff immediately.
- Prepare manual ventilation if ventilation support is affected or if power cannot be restored quickly.
- Do not continue relying on the machine if power status is unstable or battery capacity is low.
- Use a backup anesthesia machine or safe clinical backup plan if the issue cannot be corrected quickly.
Verify the Reported Alarm and Behavior
- Confirm the exact alarm displayed is POWER FAIL.
- Ask when the alarm occurred, such as during startup, during active use, after plugging in an accessory, after moving the machine, or after connecting to a different outlet.
- Check whether the machine appears to be operating on battery.
- Look for low battery indication, loss of power to auxiliary outlets, powered accessory failure, ventilator instability, or display instability.
- Confirm whether the alarm is constant, intermittent, or clears after power is restored.
Check Main AC Power First
- Verify the Apollo power cord is fully connected to the machine and to the wall outlet.
- Check whether the wall outlet has power.
- If available, test the outlet with an approved outlet tester or known-good device according to facility policy.
- Try a known-good hospital-grade outlet if the original outlet is questionable.
- If the alarm clears, allow the machine to stabilize and confirm normal AC power indication before returning it to service.
Observe Battery Status
- Check the machine battery capacity or battery status indicator.
- Confirm whether the machine is running on battery backup.
- If AC power has been restored, verify the machine recognizes AC power.
- Confirm the battery begins normal charging behavior after AC power is restored.
- Do not leave the machine available for patient use if battery capacity is low and AC power is not stable.
Check for Auxiliary Outlet Overload or Short-Circuit
- Identify any devices plugged into the Apollo auxiliary outlets.
- Unplug connected auxiliary outlet devices one at a time.
- After each device is unplugged, observe whether the POWER FAIL alarm clears.
- Inspect accessory power cords and plugs for damage, bent prongs, fluid contamination, overheating, or burning smell.
- Do not reconnect any accessory that appears damaged or causes the alarm to return.
- If a specific accessory causes the alarm, remove that accessory from service and document it separately.
Verify Pipeline Supply and Machine Readiness
- Confirm required gas pipeline connections are secure and supplying appropriate pressure.
- Check that oxygen and air pipeline hoses are connected correctly.
- Verify backup gas cylinders are available and have adequate pressure according to facility practice.
- Confirm manual ventilation supplies are available if the machine cannot be trusted for continued use.
Check External Power Cord and Physical Condition
- Inspect the power cord for cuts, crushed insulation, loose strain relief, damaged plug blades, or signs of overheating.
- Inspect the machine power inlet for looseness, damage, or contamination.
- Check for fluid intrusion around the power inlet, auxiliary outlets, and rear panel.
- Do not continue use if external damage, heat, burning smell, or contamination is found.
Retest After External Causes Are Removed
- With questionable auxiliary devices disconnected, reconnect the Apollo to known-good AC power.
- Power the machine on.
- Confirm the POWER FAIL alarm does not return.
- Observe the machine through startup and normal standby operation.
- Confirm battery charging or AC power indication is normal.
- Perform any required operational checkout or readiness test according to department policy before returning the machine to service.
If the Problem Persists
If the POWER FAIL alarm continues after AC power has been verified, the outlet has been checked, the power cord has been inspected, auxiliary outlet devices have been unplugged, battery status has been reviewed, and external damage has been ruled out, the issue may involve an internal power supply, auxiliary outlet circuit, battery charging circuit, power distribution issue, or internal machine fault.
- Remove the Apollo from service.
- Label it Out of Service.
- Do not leave it available for patient use.
- Send the machine for repair or bench evaluation.
- Escalate to qualified service support if internal troubleshooting or repair is required.
Clinical Use Tip
Never troubleshoot a POWER FAIL alarm on an active patient longer than necessary. Move the patient to a safe backup device or backup ventilation plan first if power cannot be restored quickly. Do not rely on an anesthesia machine with unresolved power failure alarms.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Drager Apollo anesthesia machine displayed POWER FAIL alarm. Staff reported the machine was operating on battery and the alarm occurred after an accessory was connected to an auxiliary outlet."
Cause
What was observed during troubleshooting.
Example:
"POWER FAIL alarm indicates AC power loss or possible short-circuit from a device connected to an auxiliary outlet. External power source, power cord, battery status, and auxiliary outlet devices were checked. Fault was isolated to a connected auxiliary device."
Resolution
What action was taken.
Example:
"Verified patient safety, checked AC outlet, power cord, battery status, pipeline supply, and auxiliary outlet accessories. Disconnected suspected auxiliary device and retested. POWER FAIL alarm cleared and normal AC power operation was confirmed before return to service."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
A POWER FAIL alarm on a Drager Apollo should be treated as a patient safety issue first and a power isolation problem second. Start with AC power, battery condition, connected accessories, and auxiliary outlet devices before suspecting internal failure. If the alarm persists after external causes are ruled out, remove the machine from service and escalate for repair. Clear documentation helps show what was checked, what was ruled out, and why the final decision was made.
That is successful troubleshooting.