Drager Babylog VN500

Asset Type

Ventilator

Manufacturer

Drager

Model

Babylog VN500

Manual Reference

Infinity Acute Care System – Babylog VN500 Ventilation Unit Instructions for Use, Software 2.n, Maintenance chapter, pages 207–210.

Manufacturer Recommendation / AEM Status

The manufacturer-listed inspection and safety-inspection interval is every year and must be performed by trained service personnel.

Manufacturer-Listed Maintenance Intervals

Every 4 Weeks

Clean the Babylog VN500 ambient air filter and exchange the filter when necessary. The manual directs cleaning or replacement after four weeks at the latest.

Every 12 Months

Complete the following:

• Replace the Babylog VN500 ambient air filter.
• Replace the expiratory-valve diaphragm.
• Service the PS500 ambient air filter during the annual inspection.
• Replace the GS500 blower air filter when the GS500 is installed.
• Replace the GS500 filter mat when the GS500 is installed.
• Inspect and service the device.
• Complete the manufacturer-listed safety inspection.

Every Year

Check the capacity of the internal Babylog VN500 battery and the PS500 internal batteries when installed. Replace batteries sooner when the capacity check indicates that replacement is necessary.

Every 2 Years at the Latest

Complete the following:

• Replace the Babylog VN500 internal battery.
• Replace the PS500 internal batteries when installed.
• Replace the filter in the Air gas inlet.

Every 6 Years

Replace the filter in the O₂ gas inlet.

The Air and O₂ gas-inlet filters, battery replacement, GS500 filter service, device inspection and service, and safety inspection are assigned to trained service personnel.

No replacement part numbers for the ambient air filter, expiratory-valve diaphragm, batteries, GS500 filters, or gas-inlet filters are provided in this manual.

Manufacturer-Listed Safety Inspection

The annual safety inspection includes:

• Verify that the Instructions for Use are available.
• Verify that the equipment is complete for the installed configuration.
• Verify that labels are complete and legible.
• Inspect for visible damage.
• Verify that externally accessible fuses match the specified values.
• Perform electrical safety testing according to IEC 62353 or DIN VDE 0751, Part 1.
• Verify the emergency expiratory valve.
• Verify the expiratory-valve non-return valve.
• Verify the emergency breathing valve.
• Verify the alarm generator.
• Verify the O₂ and Air gas-inlet non-return valves.
• Complete the device check and breathing-circuit check.
• Perform an airway-pressure measurement functional test.
• Perform a flow-measurement functional test.
• Perform a Babylog VN500 battery functional test.
• Perform a PS500 battery functional test when the PS500 is installed.

The manufacturer states that the safety inspection does not replace the listed inspection, maintenance, or preventive replacement of wearing parts.

Post-Repair Safety Inspection

The provided manual states that the device must be inspected and serviced regularly by trained service personnel, but it does not provide a separate universal post-repair test matrix.

After repair, perform all safety, functional, calibration, device-check, breathing-circuit-check, and electrical-safety activities applicable to the component or system disturbed by the repair. Follow the applicable service documentation before returning the ventilator to clinical use.

AEM Note

If a facility performs this PM at a different interval or changes the listed activities, the change should be managed through the facility’s approved Alternative Equipment Maintenance program, risk assessment, maintenance history, and applicable regulatory requirements.

What This PM Procedure Covers

• Manufacturer-listed annual inspection and service.
• Scheduled filter and diaphragm replacement.
• Battery capacity and replacement status.
• Physical and configuration inspection.
• Device and breathing-circuit checks.
• Airway-pressure and flow functional testing.
• Safety-valve and non-return-valve testing.
• Alarm-system verification.
• Electrical safety testing.
• Final return-to-service determination.

Required Tools and Equipment

Use calibrated equipment suitable for the installed Babylog VN500 configuration.

• Babylog VN500 Instructions for Use and applicable service documentation.
• Electrical safety analyzer suitable for IEC 62353 testing.
• Medical-grade Air and O₂ supplies.
• Pediatric test lung, manufacturer-listed P/N 8409742.
• Approved neonatal or pediatric breathing circuit.
• Appropriate neonatal flow sensor and cable.
• Calibrated flow- and pressure-measurement equipment capable of verifying the manufacturer-listed safety-valve values.
• Equipment required for airway-pressure and flow-measurement functional testing.
• Battery test method or manufacturer service function appropriate for the Babylog VN500 and PS500.
• Replacement ambient air filter when due.
• Replacement expiratory-valve diaphragm when due.
• GS500 filters, gas-inlet filters, and batteries when due.
• Warm soapy water for cleaning a reusable ambient air filter.
• Facility-approved cleaning and disinfection materials.

The provided manual does not specify part numbers for the scheduled filter, diaphragm, battery, GS500 filter, or gas-inlet-filter replacements.

Step-by-Step PM Procedure

1. Remove the Ventilator From Clinical Use

Action

Confirm that:

• No patient is connected.
• The ventilator has been released for maintenance.
• An alternate ventilator is available for clinical operations.
• The device and applicable components have been cleaned and disinfected before maintenance.

Expected outcome: Maintenance can be completed without affecting patient care or exposing service personnel to contamination.

2. Identify the Installed Configuration

Action

Record:

• Asset number.
• Serial number.
• Software version.
• Installed Infinity C500.
• PS500 installed: Yes / No.
• GS500 installed: Yes / No.
• Nurse-call connection installed: Yes / No.
• Previous PM date.
• Battery replacement dates.
• Air and O₂ gas-inlet-filter replacement dates.
• Reported failures or recent repairs.

Confirm which interval-based replacements are due.

Expected outcome: All applicable components and maintenance intervals are included.

3. Inspect Documentation and Equipment Completeness

Action

Verify:

• The Instructions for Use are available.
• The device combination is complete for its intended configuration.
• Required cables, hoses, valves, covers, and installed accessories are present.
• Installed equipment is assembled according to the Instructions for Use.

Expected outcome: The ventilator configuration is complete and supported by the available documentation.

4. Perform the External Visual Inspection

Action

Inspect:

• Babylog VN500 housing.
• Infinity C500 and mounting hardware.
• PS500 and GS500 when installed.
• Trolley, casters, brakes, and handle.
• Rails and accessory holders.
• Inspiratory and expiratory ports.
• Emergency air intake.
• Exhaust outlet.
• Water trap.
• Expiratory valve and locking mechanism.
• Gas hoses and fittings.
• Power cord and strain relief.
• System cable and connectors.
• Flow-sensor and CO₂-sensor connectors.
• Nurse-call connection.
• Ventilation openings and side flaps.

Confirm:

• No cracks, deformation, corrosion, or liquid damage are present.
• No hardware is loose or missing.
• No connectors are damaged and no conductors are exposed.
• Labels are complete and legible.
• Externally accessible fuses match the specified values.
• The emergency air intake and ventilation openings are unobstructed.
• Trolley brakes operate correctly.

Expected outcome: No physical condition exists that could impair safe operation.

5. Service the Babylog VN500 Ambient Air Filter

Action

The manufacturer-listed interval is cleaning or exchange after four weeks at the latest and replacement after one year.

1. Unscrew the ambient-air-filter cover screw.
2. Open the cover.
3. Remove the filter.
4. Install a new filter when the annual replacement is due or the existing filter is damaged.
5. For interim cleaning, wash the reusable filter in warm soapy water.
6. Dry the filter thoroughly.
7. Insert the filter without folding or creasing it.
8. Close the cover and tighten the screw.

Expected outcome: The filter is clean, dry, correctly installed, and within its manufacturer-listed replacement interval.

6. Replace the Expiratory-Valve Diaphragm

Action

1. Replace the diaphragm annually.
2. Remove the expiratory valve according to the Instructions for Use.
3. Remove the existing diaphragm.
4. Inspect the valve housing for contamination or damage.
5. Fit the new diaphragm evenly around the edge of the expiratory-valve housing.
6. Confirm that the diaphragm is seated correctly without folds or distortion.
7. Reinstall and lock the expiratory valve.
8. Confirm secure engagement by gently pulling on the valve.

Expected outcome: The new diaphragm is correctly seated and the expiratory valve is securely installed.

7. Complete Other Interval-Based Service

Action

Complete or verify completion of the following when applicable:

• PS500 ambient air filter serviced during the annual inspection.
• GS500 blower air filter replaced annually.
• GS500 filter mat replaced annually.
• Babylog VN500 internal battery capacity checked annually.
• PS500 battery capacity checked annually.
• Babylog VN500 battery replaced when failed or no later than every two years.
• PS500 batteries replaced when failed or no later than every two years.
• Air gas-inlet filter replaced every two years.
• O₂ gas-inlet filter replaced every six years.

Battery, GS500, and gas-inlet-filter service must be completed by personnel qualified for the applicable service procedure.

Expected outcome: All manufacturer-listed scheduled components are current and documented.

8. Power and Battery Inspection

Action

Connect the system to AC power and verify:

• The Babylog VN500 and Infinity C500 start normally.
• AC power indicators operate.
• No battery-defective indication is displayed.
• Battery charging is indicated.
• PS500 indicators operate correctly when installed.
• The GS500 mains indicator operates correctly when installed.

Perform the manufacturer service-level battery capacity and functional tests for:

• Babylog VN500 internal battery.
• PS500 internal batteries when installed.

The manual identifies at least 30 minutes of operation from a fully charged, new Babylog VN500 battery and at least 100 minutes from new, fully charged PS500 batteries under typical ventilation conditions. These stated runtimes describe new-battery performance and should not be treated as a substitute for the manufacturer service battery test.

Expected outcome: AC operation, charging, battery transfer, and battery capacity meet the applicable manufacturer service criteria.

9. Perform the Device Check

Action

Place the ventilator in Standby and run the device check.

The available check sequence may include:

• Auxiliary acoustic alarm.
• Breathing-circuit connection.
• Humidifier inspection.
• CO₂-sensor calibration.
• Neonatal flow-sensor calibration and measurement.
• Test-lung connection.
• Gas-supply-sensor calibration.
• O₂ supply.
• Air supply.
• GS500.
• Pressure-sensor calibration valve.
• Expiratory valve.
• Safety valve.
• O₂-sensor calibration.
• Medication-nebulizer control.

Repeat any failed or incomplete test after correcting the identified cause.

Expected outcome: All applicable test steps display a correct result.

Do not return the ventilator to service when the pressure-sensor calibration valve, expiratory valve, or safety-valve test fails. The manual identifies these as safety-relevant failures and states not to start ventilation.

10. Perform the Breathing-Circuit Check

Action

Using the selected breathing circuit, humidifier configuration, and patient category:

1. Start the breathing-circuit check.
2. Follow the displayed instructions to seal and open the Y-piece.
3. Record leakage.
4. Record compliance.
5. Record inspiratory resistance.
6. Record expiratory resistance.

Manufacturer-Listed Leakage Criterion

At 60 mbar or 60 cmH₂O, leakage must be no more than 300 mL/min.

Expected outcome: Leakage is within the listed limit and circuit compliance and resistance are successfully measured.

11. Verify Safety Devices

These tests require appropriate calibrated flow- and pressure-measurement equipment and the applicable service procedure.

Emergency Expiratory Valve

Action: Apply a flow of 4.5 to 5.5 L/min and measure the resulting pressure rise.

Expected outcome: Pressure rise is 1.9 to 4.4 mbar, equivalent to 1.9 to 4.4 cmH₂O.

Expiratory-Valve Non-Return Valve

Action: Perform the manufacturer service test for correct one-way-valve operation.

Expected outcome: The valve prevents reverse flow as specified.

Emergency Breathing Valve

Action: Apply a suction flow of 60 to 65 L/min and measure the pressure drop.

Expected outcome: Maximum pressure drop is 6 mbar, equivalent to 6 cmH₂O.

Gas-Inlet Non-Return Valves

Action: Verify correct operation of the non-return valves in both the O₂ gas inlet and Air gas inlet.

Expected outcome: Both valves operate correctly without prohibited reverse flow.

The safety-device values above are manufacturer-listed annual safety-inspection criteria.

12. Verify Airway-Pressure and Flow Measurement

Action

Using appropriate calibrated test equipment:

• Perform the functional test of airway-pressure measurement.
• Perform the functional test of flow measurement.
• Compare displayed measurements with the reference equipment.
• Follow the applicable service procedure for setup and tolerances.

Expected outcome: Both measurement systems meet the manufacturer service specifications.

Manual limitation: The provided Instructions for Use list these tests but do not provide the complete test setup or numerical accuracy limits. Do not invent tolerances.

13. Verify the Alarm System

Action

Verify:

• The alarm speaker produces an audible alarm.
• The auxiliary acoustic alarm operates.
• Visual alarm indication is present.
• Alarm priority behavior is correct.
• Alarm reset and audio-pause controls operate.
• The power-failure alarm operates.
• Nurse call receives a high-priority alarm when connected.

Expected outcome: Local visual and audible alarms operate reliably, and the installed remote alarm output functions correctly.

Electrical Safety Testing

The annual manufacturer-listed safety inspection requires electrical safety testing according to IEC 62353 or DIN VDE 0751, Part 1.

Test the complete installed device combination as applicable, including the Babylog VN500, Infinity C500, PS500, GS500, and powered accessories.

Ground resistance measured in ohms, expected ≤ 0.5 Ω or facility/NFPA 99 criteria if different:

Result =

Touch/chassis leakage measured in microamps:

Facility limit used =

Result =

Pass / Fail =

Document the standard, test method, device configuration, and limits used.

The Babylog VN500 manual does not provide a specific ground-resistance or leakage-current limit. Do not substitute an invented manufacturer limit.

15. Complete Final Functional Check

Action

After completing maintenance:

• Confirm all covers and side flaps are closed.
• Confirm cables are secured.
• Confirm gas hoses are connected correctly.
• Confirm the expiratory valve and water trap are installed.
• Confirm the emergency air intake is unobstructed.
• Confirm the ventilator starts without unresolved technical alarms.
• Repeat the device check and breathing-circuit check after maintenance that could affect the pneumatic system.
• Confirm all calibrations remain valid.
• Confirm the date, time, and configuration are appropriate.
• Remove test accessories and restore the facility-approved clinical configuration.

Expected outcome: The system is complete, correctly configured, and ready for clinical setup.

Pass / Fail Criteria

Pass

The ventilator passes PM when:

• Manufacturer-listed interval maintenance is complete.
• No unacceptable physical damage is present.
• Labels and externally accessible fuses are acceptable.
• Device and breathing-circuit checks pass.
• Circuit leakage is no more than 300 mL/min at 60 mbar.
• Safety valves meet the manufacturer-listed pressure and flow criteria.
• Airway-pressure and flow-measurement tests pass.
• Alarm functions operate correctly.
• Battery tests meet the applicable service criteria.
• Electrical safety testing passes under the documented standard and facility limits.
• No unresolved technical alarms remain.

Remove From Service

Remove the ventilator from service when:

• A safety-relevant device-check step fails.
• The pressure-sensor calibration valve, expiratory valve, or safety valve fails.
• Circuit leakage exceeds 300 mL/min at 60 mbar.
• A safety-valve measurement is outside the manufacturer-listed range.
• Pressure or flow measurement fails the applicable service specification.
• Audible or visual alarms are unreliable.
• Battery capacity is unacceptable.
• Electrical safety testing fails.
• Physical damage, contamination, loose mounting, or damaged gas or electrical connections could affect safe operation.
• Required service-level testing cannot be completed.

Use the manufacturer service manual, facility policy, and approved AEM program to determine the final PM interval and return-to-service requirements.