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Manual Reference
Dräger Apollo Inhalation Anesthesia Machine Operator's Manual, software 3.n, part number 90 38 237, 6th edition; plus the current software-, serial-, option-, and region-specific Apollo instructions, vaporizer manuals, reprocessing instructions, service documentation, and field updates. Confirm the installed software and configuration before service because component schedules and test paths can differ.
Manufacturer Recommendation / AEM Status
Dräger specifies inspection and maintenance every 6 months by an authorized DrägerService representative in the referenced U.S. manual. The maintenance table also contains component-specific intervals:
- At least every 4 weeks: replace the water trap, or sooner when dirty or when CHECK SAMPLE LINE remains after ruling out a blocked or kinked sample line
- Every 2 weeks: replace the filter for the endotracheal aspiration system when that accessory is present
- Every year: replace the patient-gas-module filter mat, power-pack filter mat, ventilator dust filter, upper ventilator diaphragm, and vapor-plug-system O-rings
- Every 2 years: replace the patient-gas-module Nafion hose/bacterial filter, housing-cover filter mat, gas-supply-block sintered filter, breathing-system PEEP diaphragm, and Manual/Spontaneous–Automatic reversing diaphragm
- Every 3 years: replace the lower ventilator diaphragm and O-ring; replace the UPS lead-gel battery every 3 years or when BATTERY LOW is displayed
- Every 6 years: replace the mixer piped-gas pressure reducer
- Condition based: replace flow sensors when calibration is no longer possible or a fault is displayed; replace the AGS filter when blocked
Some scheduled work is restricted to DrägerService or appropriately qualified service personnel. Do not extend these intervals through an AEM program without the facility's documented risk assessment, approval, service history, applicable regulations, and current manufacturer information.
What This PM Procedure Covers
- Identity, software, options, history, recalls, and maintenance interval status
- Workstation, trolley, casters, brakes, controls, cables, hoses, gas inlets, cylinders, outlets, and accessories
- Breathing system, ventilator diaphragms, valves, flow sensors, absorber, sampling system, AGS, and vaporizers
- Mains power, UPS battery, automatic self-test, leakage/compliance checks, and emergency oxygen
- Fresh-gas delivery, oxygen safety, ventilation, monitoring, alarms, and failure responses
- Electrical safety, restoration, final self-test, and CMMS documentation
Required Tools and Equipment
- Current software- and region-specific Apollo instructions, controlled service procedure, reprocessing instructions, vaporizer manuals, service bulletins, and facility PM form
- Calibrated anesthesia/ventilator analyzer, test lung, breathing circuit, and configuration-specific adapters
- Calibrated pressure, flow, oxygen, CO2, and anesthetic-agent measurement equipment required by the controlled procedure
- Electrical-safety analyzer suitable for the current manufacturer/facility method
- Approved pipeline and cylinder gas supplies, test fittings, scavenging connection, and leak-test accessories
- Correct six-month service supplies and all due annual, two-year, three-year, and six-year manufacturer-approved parts
- Compatible vaporizers and the correct vaporizer-specific test equipment/procedures
- Approved reprocessing supplies and facility-required personal protective equipment
Step-by-Step PM Procedure
1. Remove the Workstation From Patient Use
Action: Confirm no patient or procedure depends on the Apollo. Provide a ready backup anesthesia workstation, remove disposable patient items, reprocess the system, and isolate mains and gas supplies before any service access.
Expected outcome: The Apollo is unavailable for clinical use, decontaminated, and safely controlled for maintenance.
2. Verify Identity, Software, and Configuration
Action: Record asset tag, serial number, software version, gas mixer and gases, ventilator/breathing-system configuration, patient-gas module, oxygen-measurement method, vaporizers, pipeline/cylinder arrangement, AGS, UPS battery, auxiliary outlets, and installed accessories.
Expected outcome: The CMMS record matches the physical workstation and the correct manuals, parts, options, and test path are identified.
3. Review History and Due Intervals
Action: Review prior PM, self-test/leak values, repairs, gas/agent/ventilation complaints, power events, recalls and field actions, software updates, battery history, and all component replacement dates. Resolve open corrective work before release.
Expected outcome: Every due six-month, annual, two-year, three-year, six-year, condition-based, and corrective action is known and traceable.
4. Inspect Documentation, Labels, and Configuration
Action: Confirm the current instructions are available. Inspect rating, serial, warning, gas, vaporizer, fuse, and connection labels. Verify displayed/configured gases and options agree with the physical inlets, cylinders, sensors, and accessories.
Expected outcome: Documentation and labels are complete and legible, and the configured gas/device identity matches the installed hardware.
5. Inspect the Workstation and Trolley
Action: Inspect the trolley, casters, brakes, housing, drawers, work surface, display, touchscreen/controls, rotary knob, indicators, alarm light, speakers, handles, rails, support arms, outlets, cords, equipotential connection, hoses, strain reliefs, connectors, and cable management. Check for impact, looseness, corrosion, cracks, fluid entry, contamination, blocked vents, or unauthorized modifications.
Expected outcome: The workstation is stable, complete, clean, and free of mechanical or electrical damage that could affect safe anesthesia delivery.
6. Inspect Gas Supplies and Emergency Oxygen
Action: Inspect pipeline hoses/inlets, cylinder yokes, regulators, pressure reducers, gauges, sensors, check valves, seals, and gas identification. Verify supply recognition and pressure indications, test source changeover as required, and functionally check the O2 flush/emergency oxygen path with the current procedure.
Expected outcome: Each configured gas source is correctly identified, secure, leak-free, recognized, and capable of supplying the workstation; emergency oxygen functions correctly.
7. Inspect Vaporizers and Mounting System
Action: Inspect each vaporizer, fill/drain system, mounting rail, locking mechanism, interlock, seals, agent label, level indication, and recognition feature. Test each vaporizer using its own current instructions and calibrated agent measurement equipment.
Expected outcome: Vaporizers are undamaged, correctly filled/identified, securely mounted, mutually interlocked, leak-free, and within their specified output tolerance.
8. Inspect the Breathing System and Ventilator
Action: Reprocess/disassemble as required and inspect the breathing-system housing, inspiratory and expiratory valves, APL valve, absorber, bag arm, reservoir bag, hoses, Y-piece, connectors, PEEP diaphragm, Manual/Spontaneous–Automatic reversing diaphragm, ventilator upper/lower diaphragms and O-ring, flow sensors, fan openings, and all seals. Replace scheduled parts only under the current service instructions.
Expected outcome: The breathing and ventilator systems are clean, dry, intact, correctly assembled, and current on all diaphragm, O-ring, filter, and sensor requirements.
9. Inspect Sampling, Gas Monitoring, and Scavenging
Action: Inspect and replace the water trap when due or indicated; inspect the sample line, patient-gas module, Nafion hose/bacterial filter, module filter mat, oxygen measurement, CO2/agent monitoring path, AGS, transfer hose, scavenging connections, and AGS filter. Confirm pathways are unobstructed and assembled correctly.
Expected outcome: Sampling, gas monitoring, and scavenging systems are clean, leak-free, unobstructed, functional, and current on scheduled parts.
10. Inspect Power, Filters, and UPS Battery
Action: Inspect mains inlet/cord, plugs, external fuses, auxiliary outlets, power-pack and housing filter mats, ventilator dust filter, cooling paths, battery connections, and UPS battery condition/date. Replace the UPS lead-gel battery at three years or for BATTERY LOW, and replace filters at their scheduled intervals.
Expected outcome: Mains operation, outlets, cooling airflow, battery connection, backup power, charging, and all filter conditions are acceptable.
11. Complete the Pre-Test Setup and Automatic Self-Test
Action: Assemble the approved breathing circuit, test lung, absorber, sampling components, water trap, flow sensors, vaporizers, gas supplies, and scavenging. Complete the on-screen/pre-use checklist and run the full automatic self-test rather than bypassing it. Record the overall status, leak/compliance values, calibrations, and any advisory.
Expected outcome: The self-test completes successfully, all required calibrations pass, and there is no unresolved limitation, leak, or failed component.
12. Perform the Breathing-System Leakage and Compliance Tests
Action: Use the automated and controlled service procedures to verify total system leakage, compliance, breathing-system assembly, hoses, absorber, bag, vaporizers, and gas-sampling connections. Repeat after any component is opened, moved, or replaced.
Expected outcome: Leakage and compliance meet the current Apollo limits in every required configuration.
13. Verify Fresh-Gas Delivery and Oxygen Safety
Action: With calibrated instruments, test representative fresh-gas settings, gas composition, flow accuracy, O2 concentration/monitoring, O2 flush, minimum oxygen behavior, and hypoxic-mixture protection for the installed mixer. Verify cylinder and pipeline failure responses under controlled non-patient conditions.
Expected outcome: Fresh-gas flow and composition meet current tolerances, oxygen monitoring is accurate, and oxygen safety/failure protections operate correctly.
14. Verify Ventilation and Pressure Monitoring
Action: Test representative volume-controlled, pressure-controlled, pressure-support, and manual/spontaneous modes as installed. Measure tidal volume, rate/timing, airway pressure, PEEP, inspiratory flow, minute volume, APL function, and monitoring accuracy at the service-manual points.
Expected outcome: Delivered and displayed ventilation values, pressure limitation, PEEP, manual ventilation, and mode transitions meet current Apollo tolerances.
15. Verify Gas and Agent Monitoring
Action: Calibrate and test installed O2, CO2, anesthetic-agent, flow, and pressure measurement functions using approved gases and calibrated equipment. Confirm gas/agent identification, waveform/numeric display, sample flow, and alarm response.
Expected outcome: Each installed sensor and measurement channel calibrates and displays applied values within current tolerance without sampling or identification faults.
16. Verify Alarms and Safety Responses
Action: Test required high/low airway pressure, apnea, volume, oxygen, agent, fresh-gas, pipeline/cylinder, circuit/leak, scavenging, sensor, fan, mains-power, battery, and system alarms. Verify audible/visual annunciation, priority, silence/reset behavior, O2 failure response, vaporizer interlock, and safe fallback modes.
Expected outcome: Every required alarm and safety response is detected, indicated, sounded, prioritized, and cleared as specified.
17. Verify UPS Backup Operation
Action: Fully charge the UPS battery, disconnect mains under the controlled test configuration, verify the power-failure alarm and uninterrupted operation, and complete the current backup-runtime/performance test. Restore mains and confirm charging.
Expected outcome: The Apollo transfers to battery without an unsafe interruption, provides the required backup performance, alarms correctly, and resumes charging on mains.
18. Complete Scheduled Component Work
Action: Verify and document each due part: annual patient-gas-module and power-pack filter mats, ventilator dust filter, upper diaphragm, and vapor-mount O-rings; two-year Nafion hose/bacterial filter, housing filter mat, sintered gas filter, PEEP diaphragm, and reversing diaphragm; three-year lower diaphragm/O-ring and UPS battery; six-year mixer pressure reducer. Replace condition-based items when indicated.
Expected outcome: Every applicable manufacturer-scheduled and condition-based component is current, correctly installed, and traceable by part/lot/date.
19. Perform Electrical Safety Testing
Action: Test the complete configured workstation and electrically connected accessories using the current Dräger technical procedure and facility-adopted standard. Inspect mains and protective-earth paths, accessible conductive parts, outlets, cords, fuses, equipotential connection, and accessory power supplies. Record the analyzer, configuration, limits, and actual readings.
Expected outcome: Every required electrical-safety measurement passes the current applicable criteria.
20. Restore, Retest, and Document
Action: Reprocess and reassemble the Apollo, reinstall approved vaporizers/accessories, restore facility settings, reconnect gases and mains, and run a final complete successful self-test after service. Document all readings, leak/compliance results, battery test, parts, corrective work, and disposition.
Expected outcome: The Apollo is clean, complete, configured, current on maintenance, and either returned to service with a successful final self-test or clearly removed from service.
Electrical Safety Testing
Use the current configuration-specific Dräger technical procedure and the facility's adopted electrical-safety standard. The public operator manual does not provide a universal set of numeric limits for every Apollo configuration, so do not import limits from another anesthesia workstation.
Electrical-safety analyzer / serial / calibration due:
Result =
Protective-earth or ground resistance:
Current Dräger or facility limit =
Result in ohms =
Pass / Fail =
Equipment/chassis leakage or touch current:
Test method / configuration / limit =
Normal-condition result =
Single-fault result =
Pass / Fail =
Auxiliary outlets and connected accessories:
Items/configuration tested =
Results / limits =
Pass / Fail =
Remove the Apollo from service for damaged insulation, unreliable protective earth, an unsafe outlet, excessive leakage/touch current, unstable mains/battery operation, or any incomplete required test.
Pass / Fail Criteria
Pass
- Identity, current documentation, history, labels, trolley, brakes, enclosure, display, controls, hoses, cables, fuses, outlets, and accessories pass inspection
- Gas supplies, pressure indications, emergency O2, vaporizers/interlocks, breathing system, ventilator, sampling, gas monitoring, and scavenging pass
- Full automatic self-test and leakage/compliance tests pass after final assembly
- Fresh-gas delivery, oxygen safety, ventilation, pressure/flow/gas/agent monitoring, alarms, and failure responses meet current criteria
- Mains, UPS transfer/runtime, battery alarms, and charging pass
- Six-month maintenance and every applicable scheduled/condition-based component action are complete
- Electrical safety passes using documented current limits and actual readings
- No unresolved physical, gas, ventilation, monitoring, alarm, power, battery, software, recall, or safety fault remains
Remove From Service
- Self-test, leakage/compliance, gas/agent delivery, oxygen safety, ventilation, monitoring, alarm, backup-power, or electrical-safety testing fails
- Physical, mounting, electrical, gas, vaporizer, breathing-system, ventilator, sampling, scavenging, or accessory damage could affect safe anesthesia
- A required six-month service or scheduled component is overdue or cannot be completed
- Current controlled documentation, required parts, calibrated equipment, backup workstation, or authorized service personnel are unavailable
- Any unresolved condition could cause incorrect gas composition, agent delivery, ventilation, monitoring, alarm, or power continuity
Copy/Paste CMMS Work Order Procedure
The Apollo is a life-support anesthesia workstation. Never service it while connected to a patient, and do not return it to use with a failed self-test, unacceptable leak, unreliable gas/agent or ventilation delivery, unresolved alarm, overdue maintenance, or unavailable backup anesthesia equipment.