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Manual Reference
Drager Oxylog 3000 plus Instructions for Use, SW 1.n, document 57 05 305, Edition 12, 2020-01, together with the current controlled service documentation. Verify the exact software, adult or pediatric circuit, AutoFlow, NIV, CO₂, data-interface, mounting, AC/DC supply, battery, and regional configuration before service.
Manufacturer Recommendation / AEM Status
- Device check: Before every use when the breathing hose has been changed and at least every six months.
- Power-supply-failure alarm: Monthly.
- Optional CO₂ sensor: Zero calibration weekly and filter check monthly.
- Inspection and safety checks: Every two years by maintenance personnel.
- Preventive maintenance: Every two years.
- Dust filter: Replace every two years.
- Internal rechargeable battery: Replace every two years or sooner when it no longer remains charged for the specified operating time.
- Helicopter use: During the safety check, visually inspect the battery contacts and replace them as necessary.
The manufacturer schedule is the baseline. A different interval or activity requires the facility's approved AEM program, documented risk assessment, service history, current Drager information, and applicable regulations. Maintenance must be performed with no patient connected by properly trained personnel; Drager recommends DragerService for the prescribed measures.
What This PM Procedure Covers
- Identity, software, configuration, history, labels, documents, and scheduled maintenance
- Enclosure, controls, mounting, oxygen connection, power supplies, battery, filters, interfaces, circuit, valve, flow sensor, and accessories
- Startup self-test and manufacturer device check with the intended breathing circuit
- Ventilation delivery, monitoring, gas supply, high-pressure, disconnection, supply-pressure, and power-failure alarms
- Safety valve, emergency-air valve, breathing-circuit integrity, and power indicators
- Optional CO₂ zero, filter, display, waveform, and alarm checks
- IEC 62353 electrical safety and final return-to-service documentation
Required Tools and Equipment
- Current Oxylog 3000 Plus SW 1.n IFU and controlled Drager service procedure
- Approved Drager test lung and the exact adult or pediatric breathing circuit that will be used
- Calibrated ventilator analyzer suitable for pressure, flow, volume, rate, timing, PEEP, and oxygen verification
- Medical oxygen source and regulator supplying 270 to 600 kPa as required by the current instructions
- IEC 62353 electrical-safety analyzer and applicable AC/DC power supply
- Correct Drager replacement dust filter and rechargeable battery when due
- Optional CO₂ sensor test filter, correct reusable test cuvette, test-gas equipment, and current calibration procedure when equipped
- Approved cleaning and reprocessing supplies, inspection light, and facility-required PPE
Safety: Provide backup ventilation before removing the device from use. Never perform maintenance with a patient connected. Before internal or replacement work, disconnect every electrical and gas connector. Do not open the housing unless authorized and following current controlled service instructions.
Step-by-Step PM Procedure
1. Remove the Ventilator From Patient Use
Action: Transfer any patient to appropriate backup ventilation under clinical direction. Remove the Oxylog from service, disconnect patient-use components, control contamination, and attach a service notice.
Expected outcome: No patient depends on the ventilator during maintenance and suitable backup ventilation remains available.
2. Verify Identity, Configuration, and History
Action: Record asset tag, serial number, SW 1.n revision, installed options, adult/pediatric circuit type, AutoFlow, NIV, optional CO₂, power supplies, mounting system, battery age, last device check, last PM, repairs, failures, transport environment, and open field actions. Confirm current IFU and service documents apply.
Expected outcome: The physical device matches the CMMS record and all applicable tests, parts, and due intervals are identified.
3. Clean, Disinfect, and Inspect the Complete System
Action: Reprocess the ventilator and reusable components according to current Drager instructions before maintenance. Inspect enclosure, protection bracket, display, keys, rotary knob, alarm speaker, connectors, labels, cooling openings, emergency/ambient air inlets, mounting hardware, rails, carrying system, and accessories for contamination, damage, blockage, looseness, corrosion, heat, or fluid entry.
Expected outcome: The system is clean, complete, legible, unobstructed, securely mounted, and free of physical damage.
4. Inspect Power Supplies and Battery
Action: Inspect the AC/DC power pack, DC/DC converter, cables, plugs, DC connector, strain reliefs, battery compartment, cover, knob, contacts, and spare battery. Check battery charge LEDs and on-screen capacity indication. For helicopter service, inspect battery contacts carefully and replace as needed.
Expected outcome: Power components are intact and secure, a fully charged battery is installed, the spare is ready when required, and no damaged or overheated contact is present.
5. Replace the Scheduled Battery and Dust Filter
Action: At the two-year interval, disconnect electrical and gas supplies, replace the dust filter, and replace the internal rechargeable battery. Replace the battery earlier if it no longer remains charged for the specified operating time. Use correct current Drager parts and document date, part, lot/serial, and disposition.
Expected outcome: A clean new filter and acceptable in-date battery are correctly installed and traceable.
6. Inspect the Oxygen Supply Path
Action: Inspect the medical-oxygen hose, probe, inlet, cylinder/regulator connection, seals, and routing. Confirm the source is secure and supplies the required range. Do not install a flow-control valve or flowmeter in the ventilator gas supply.
Expected outcome: The oxygen path is undamaged, leak-free, correctly connected, and capable of stable supply.
7. Inspect the Breathing Circuit and Flow Measurement Path
Action: Inspect the breathing hose, angled connector, breathing valve, rubber disk, flow sensor, measuring lines, HME/filter, Y-piece, and test lung. Confirm color and port orientation, correct hose-type selection, cleanliness, dryness, and absence of cracks, bends, obstruction, or damaged valve parts. Use the exact accessories intended for service.
Expected outcome: The circuit is complete, correctly assembled, unobstructed, and suitable for an accurate device check.
8. Verify Startup and User Interface
Action: Connect approved oxygen and external power, install the charged battery, and start the device. Verify self-test completion, display, backlight, keys, rotary knob, curves, values, settings, alarm pages, indicators, and configured interfaces. Review active and stored messages.
Expected outcome: Startup completes without unresolved error and all controls, indications, and displays function normally.
9. Perform the Manufacturer Device Check
Action: Connect the approved test lung to the complete intended circuit. Enter the startup menu, select Device check, confirm the correct hose type and gas supply, set the control knobs as prompted, and acknowledge audible and optical alarms. Allow the automatic sequence to test connections, flow, pressure levels, alarm signals, and controls.
Expected outcome: The approximately three-minute device check reaches a successful final result. The displayed service date is current and no "Service date overdue" message appears.
10. Verify High-Pressure and Circuit-Disconnection Alarms
Action: Ventilate the test lung in VC-CMV/CMV as applicable. Compress the test lung until airway pressure exceeds the set Pmax and confirm the PAw high alarm. Restore ventilation, then disconnect the breathing hose and/or flow-measuring lines and confirm the appropriate circuit alarm.
Expected outcome: Both alarm conditions are promptly detected, audibly and visually indicated, and clear correctly when normal conditions are restored.
11. Test the Monthly Power-Supply-Failure Alarm
Action: With the ventilator on and no patient connected, disconnect external power, then remove the battery to activate the acoustic power-failure alarm. Listen for the alarm, reinstall the battery, and reconnect external power.
Expected outcome: The acoustic power-failure alarm sounds reliably and normal power/charging indications return. If no alarm is heard, remove the device from service and contact qualified service.
12. Verify Ventilation and Monitoring Performance
Action: Using the calibrated ventilator analyzer and controlled service procedure, verify required test points for volume- and pressure-controlled modes, delivered and monitored volume/flow, airway pressure, PEEP, respiratory rate, inspiratory time/I:E, oxygen concentration, and configured functions such as AutoFlow, pressure support, apnea ventilation, and NIV.
Expected outcome: All delivered and displayed parameters meet the current Drager service tolerances across the required test points.
13. Verify Safety Functions
Action: Under the controlled service procedure, verify the safety valve with maximum pressure of 90 mbar, emergency-air valve, supply-pressure monitoring, high-airway-pressure alarm, breathing-circuit-integrity alarm, mains-supply-failure alarm, and power indicators. Do not improvise test fixtures or defeat any safety function.
Expected outcome: Every manufacturer-listed safety function operates correctly and the safety valve does not exceed its 90 mbar maximum criterion.
14. Check Optional CO₂ Monitoring
Action: When equipped, select the correct reusable or disposable cuvette type. With the sensor warmed and removed from a clean cuvette, perform zero calibration. Attach the sensor to its test filter and run the filter check. Verify etCO₂ value, waveform, high/low alarms, cable, sensor, and cuvette condition. Perform the controlled gas check/calibration only when required.
Expected outcome: Weekly zero and monthly filter checks pass, readings and waveform are stable, alarms operate, and no contamination or configuration mismatch remains.
15. Perform IEC 62353 Electrical Safety Testing
Action: Test the complete applicable configuration according to IEC 62353, the current Drager service procedure, regional requirements, device class, and power-supply arrangement. Record analyzer identity, test method, conditions, governing limits, and actual measurements.
Expected outcome: Every required measurement passes the correct current criterion with traceable results.
16. Restore and Complete Final Readiness Check
Action: Remove test equipment, reinstall approved accessories, confirm correct circuit and hose selection, restore authorized settings, install a fully charged battery, reconnect the intended power and gas sources, and repeat startup/device checks as required. Attach maintenance records and identify final status.
Expected outcome: The Oxylog 3000 Plus is clean, complete, current on service, fully functional, and either formally returned to use or clearly quarantined.
Electrical Safety Testing
Drager requires electrical safety checking in accordance with IEC 62353 at the two-year inspection. The public IFU does not state numeric electrical limits, so use the current controlled Drager service procedure, the exact AC/DC supply and device configuration, the applicable IEC 62353 method, and regional/facility requirements. Do not substitute an arbitrary generic limit.
Analyzer / serial / calibration due:
Result =
Equipment class / supply configuration / test method:
Result =
Protective-earth resistance, if applicable:
Governing limit =
Measured value =
Pass / Fail / N/A =
Equipment or touch leakage:
Governing limit =
Highest measured value =
Pass / Fail =
Additional applied-part or accessory testing, if applicable:
Method / limit / result =
Pass / Fail Criteria
Pass
- Identity, software, configuration, history, documents, labels, enclosure, mounting, controls, inlets, connectors, power supplies, oxygen path, circuit, valve, flow sensor, and accessories pass inspection
- The device check succeeds with the exact intended breathing circuit and no overdue-service message
- Ventilation delivery, monitoring, gas-supply response, alarm system, and configured functions meet controlled service criteria
- Safety valve remains within the 90 mbar maximum and every listed emergency, supply, circuit, alarm, and indicator function passes
- Monthly power-failure alarm test passes
- Optional CO₂ zero and filter checks are current and pass
- Dust filter and rechargeable battery are replaced at two years, or the battery earlier when runtime is inadequate
- IEC 62353 testing passes the applicable current criteria
- Final configuration, accessories, battery charge, startup, documentation, and disposition are complete
Remove From Service
- Physical damage, contamination, fluid entry, blocked air inlet, damaged mount, unsafe power/gas component, circuit defect, or unauthorized modification is present
- Startup, device check, ventilation accuracy, monitoring, gas supply, safety valve, emergency-air valve, alarm, power indicator, battery, CO₂, or electrical-safety verification fails
- The service date is overdue or required two-year maintenance, filter, battery, field action, or repair is incomplete
- The correct circuit, parts, current service procedure, calibrated test equipment, qualified personnel, or backup ventilator is unavailable
Copy/Paste CMMS Work Order Procedure
Never return the Oxylog 3000 Plus to service with an unsuccessful device check, failed safety function, unreliable alarm or battery, inaccurate ventilation or monitoring, overdue prescribed maintenance, failed electrical-safety result, or any unresolved condition that could interrupt ventilation.