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Asset Type
Manufacturer
Model
Models Covered
Getinge Servo-u only. Confirm the exact model, serial number, system version, patient unit, user interface, mobile cart, battery modules, gas supplies, O₂ sensor or cell, expiratory cassette, circuit configuration, CO₂, Y sensor, Edi/NAVA, nebulizer, Servo Duo Guard, external 12 V DC, network/remote interfaces, and other options before service. This page does not automatically cover Servo-n, Servo-air, Servo-c, Servo-i, Servo-s, or another Servo platform.
Manual Reference
Getinge/Maquet SERVO-U Ventilator System v2.1 User's Manual, document 6886056; SERVO-U/n Ventilator Systems Cleaning and Maintenance User's Manual, document 6880314; and the Servo-u system version 4.0 datasheet. Use the current country-, REF-, serial-, system-version-, hardware-, option-, and circuit-specific Getinge eIFU and controlled service documentation. The current service procedure governs internal access, parts, test fixtures, exact tolerances, adjustments, and release criteria.
Manufacturer Recommendation / AEM Status
- Before every patient: Complete the pre-use check. Repeat it after exchanging the expiratory cassette or after changing the patient circuit; use the patient-circuit test when the exact instructions allow that path.
- Every 12 months or 5,000 operating hours, whichever occurs first: Authorized personnel complete preventive maintenance. The time remaining is available in the System Status window.
- Cleaning and reprocessing: Perform routine external cleaning and reprocess the expiratory cassette and other reusable parts at the intervals and by the methods in the current Cleaning and Maintenance manual and facility infection-control policy.
- Battery modules: Keep the required modules charged and monitor System Status. Replace a module when the ventilator reports imminent expiration or diminished/unreliable capacity; do not invent a calendar replacement interval where the current documentation uses condition status.
- Condition based: Replace or service damaged, contaminated, leaking, blocked, expired, inaccurate, or failed components. Replace filters when resistance increases or the filter instructions require it, whichever occurs first.
Getinge states that service, repair, installation, and preventive maintenance are for authorized personnel using original parts and technical documentation. If the facility changes the OEM interval or task set, manage the change through its approved AEM program, documented risk assessment, service history, and applicable regulatory requirements.
What This PM Procedure Covers
- Identity, system version, operating hours, PM status, configuration, service history, logs, labels, options, and field actions
- Patient unit, user interface, cart, power, battery modules, gas supplies, oxygen measurement, cooling, expiratory cassette, modules, circuit, and accessories
- Cleaning/reprocessing status, pre-use check, leakage, pressure transducers, safety valve, gas delivery, ventilation performance, monitoring, alarms, and power transfer
- Configuration-specific CO₂, Edi/NAVA, Y sensor, nebulizer, Servo Duo Guard, external DC, data, remote service, and interface checks
- Controlled annual/5,000-hour service, electrical safety, final configuration restoration, and CMMS documentation
Required Tools and Equipment
- Current Servo-u User's Manual, Cleaning and Maintenance manual, controlled service procedure, checklists, service bulletins, software information, option manuals, and field-action records
- Calibrated ventilator analyzer capable of the pressures, flows, volumes, rates, timing, oxygen concentration, and leak measurements required by the exact service procedure
- Compatible test lung, approved patient circuits, filters, water traps, exhalation components, Y sensor, pressure lines, and configuration-specific adapters
- Approved medical Air and O₂ supplies, hoses, fittings, regulators, and calibrated gas-supply and oxygen-reference test equipment
- Approved CO₂ test equipment, Edi/NAVA test fixture, nebulizer test equipment, and option-specific simulators when installed and required
- Correct expiratory cassette test/reprocessing equipment and approved cleaning/disinfection materials
- Correct original Getinge PM parts, filters, battery modules, O₂ sensor/cell, cassette components, seals, and other due parts
- Electrical-safety analyzer appropriate to the exact equipment class, protective earth, applied parts, external DC source, modules, and connected accessories
- PPE, lint-free materials, inspection light, and correct authorized service tools
Safety: Never perform PM with a patient connected. Provide verified alternate ventilation and label the Servo-u unavailable. Disconnect mains and gas supplies before internal work. Oxygen supports combustion; keep oil, grease, ignition sources, and incompatible materials away from gas components. Use two fully charged battery modules where the configuration requires reliable backup. Never use service settings, disconnect the expiratory cassette, or perform work that could affect ventilation while a patient is connected.
Step-by-Step PM Procedure
1. Remove the Ventilator From Clinical Use
Action: Confirm no patient depends on the Servo-u, provide verified alternate ventilation, disconnect patient-use items, label the ventilator unavailable, and complete the required cleaning and infection-control preparation.
Expected outcome: The ventilator is isolated, clean, and safe for authorized maintenance.
2. Verify Identity, Version, and Configuration
Action: Record asset tag, Servo-u model, serial number, system version, REF/hardware revision, operating hours, time to next PM, patient unit, user interface, cart, power sources, battery modules, Air/O₂ supplies, oxygen-sensor type, expiratory cassette, circuit, installed modules, CO₂, Edi/NAVA, Y sensor, nebulizer, Servo Duo Guard, external DC, network, and other options.
Expected outcome: The asset matches the CMMS record, and the correct eIFU, interval, parts, service procedure, and test path are positively identified.
3. Review History, Logs, and Field Actions
Action: Review prior PM, repairs, pre-use-check failures, expiratory-cassette errors, gas/oxygen complaints, pressure/volume discrepancies, battery messages, shutdowns, alarms, unusual noise, overheating, drops, liquid entry, software updates, event/service logs, remote-service information, service bulletins, and field actions.
Expected outcome: All due work, recurring faults, complaints, and unresolved safety conditions are known before testing.
4. Inspect Labels, Patient Unit, and User Interface
Action: Inspect serial, rating, gas-pressure, fuse, warning, and module labels; patient-unit enclosure; user interface; display; touchscreen; rotary knob; membrane keys; alarm light frame; loudspeaker; ambient-light sensor; control cable and locking nuts; handles; feet; covers; fasteners; and ventilation openings.
Expected outcome: Identification is legible and all structures, controls, indicators, speakers, cables, and cooling paths are clean, complete, secure, and undamaged.
5. Inspect the Cart, Mounting, Gas, and Power Hardware
Action: Inspect the mobile cart, wheels, brakes, support arms, basket/shelves, cylinder restraints, module compartments and dummy modules, gas inlets, Air/O₂ hoses and fittings, AC inlet, mains cord, plug, strain relief, protective-earth and equipotential connections, external DC connection, network/data ports, and accessories. Lock the wheels and verify stability.
Expected outcome: The system is stable and all mounting, gas, power, grounding, module, and accessory connections are correct, secure, leak-free, and undamaged.
6. Verify Cleaning and Reprocessing Status
Action: Follow the current Cleaning and Maintenance manual for the user interface, patient unit, expiratory cassette, expiratory inlet/moisture trap, reusable circuit components, accessories, and installed options. Confirm correct method, agent, temperature, cycle count, drying, inspection, and storage. Never mix incompatible processes or assemble wet parts.
Expected outcome: Reusable components are clean, dry, correctly reprocessed, within their allowed service life, and free of residue, cracks, deformation, or contamination.
7. Inspect the Expiratory Cassette and Gas Path
Action: Inspect the expiratory cassette, membrane/valve areas accessible under its instructions, locking and electrical interfaces, expiratory inlet and moisture trap, safety valve, inspiratory and expiratory channels, internal protective filters, oxygen sensor/cell, and exhaust path. Replace or refer any damaged, contaminated, blocked, expired, or failed part.
Expected outcome: The cassette and gas path are clean, dry, correctly seated, unobstructed, and ready for the controlled pre-use and performance checks.
8. Inspect and Evaluate Battery Modules
Action: Inspect each battery module, contacts, latches, compartment, dummy modules, labels, serial number, charge status, remaining operating time, and notifications in System Status. Confirm the required number of fully charged modules. Replace any module reporting expiration, imminent expiration, diminished capacity, unreliability, damage, swelling, heat, or retention failure.
Expected outcome: Required battery modules are recognized, charged, retained securely, and free of warning or capacity concerns.
9. Complete the Full Pre-Use Check
Action: Assemble the exact intended test circuit and accessories, connect approved gas and power sources, turn on the Servo-u, enter Standby, and run the full pre-use check following every on-screen instruction. Use the same circuit configuration intended for service. Record each test and any failure; repeat the check after cassette exchange or circuit changes as required.
Expected outcome: The pre-use check passes completely with no unresolved gas, leakage, cassette, sensor, transducer, safety-valve, alarm, battery, or system fault.
10. Complete the Authorized Annual/5,000-Hour Service
Action: Authorized personnel complete the exact controlled PM checklist at 12 months or 5,000 operating hours, whichever occurs first. Record operating hours, System Status due indicator, service tools/software, parts, calibrations, measurements, updates, and new due date/hours. Use original parts and repeat all affected tests after service.
Expected outcome: Every controlled PM task is complete, all results pass, service records are traceable, and the System Status maintenance information is updated correctly.
11. Verify Gas Supply and Oxygen Delivery
Action: With calibrated equipment, verify Air and O₂ inlet connections, source pressure indications, source-failure/changeover behavior, oxygen-sensor/cell calibration and response, delivered/displayed oxygen concentration, and related alarms using the exact current service procedure.
Expected outcome: Gas supplies, oxygen mixing/measurement, failure response, and alarms are accurate, stable, leak-free, and within controlled limits.
12. Verify Ventilation Performance
Action: Using a calibrated ventilator analyzer and test lung, test the representative invasive and noninvasive modes required by the controlled checklist. Verify pressure, flow, tidal/minute volume, rate, timing, PEEP/CPAP, triggering, cycling, compensation, and displayed measurements. Use neonatal/pediatric/adult circuit paths only when supported and applicable.
Expected outcome: Delivered and displayed ventilation parameters meet the exact system-version-, circuit-, patient-category-, and mode-specific service tolerances.
13. Verify Alarms and Safety Responses
Action: Test the required high/low airway pressure, PEEP, volume, rate, apnea, oxygen, gas-supply, circuit-disconnect, leakage, expiratory-cassette, sensor, power, battery, system, and technical alarms. Verify audible and visual priority, displayed message, alarm silence/reset, backup alarm behavior, and safe response.
Expected outcome: Every applicable alarm detects, displays, sounds, prioritizes, and clears correctly; safety-valve and backup responses meet the controlled criteria.
14. Verify Power Transfer, Charging, and External DC
Action: Confirm AC operation, protective-earth connection, battery recognition, and charging. With the ventilator operating on a test lung, remove AC under the controlled procedure and verify uninterrupted battery operation, correct indication/alarm, and adequate displayed backup time. Test approved external 12 V DC when installed, then restore AC and confirm charging.
Expected outcome: Ventilation continues through supported power transitions, sources are identified correctly, expected alarms occur, and charging resumes without a shutdown or fault.
15. Verify Installed Modules, Monitoring, and Therapies
Action: Test each installed option under its current instructions: CO₂ measurement, Y sensor/proximal pressure, Edi module and NAVA signal path, Aerogen nebulizer, Servo Duo Guard/expiratory heating, NIV, high-flow therapy, external monitor, and other licensed functions. Use approved simulators, fixtures, and circuits and document N/A where not installed.
Expected outcome: Installed modules, sensors, therapies, heaters, and related alarms are recognized, functional, accurate, and compatible with the configured circuit.
16. Verify Data, Network, Remote, and Interfaces
Action: Verify date/time, logs, screenshots/recordings, USB export using an approved memory device, network/serial interfaces, remote-service status, external alarm or nurse-call output, and central-monitor integration when installed. Do not erase clinical or service data unless specifically authorized.
Expected outcome: Required logs, exports, communications, and alarm interfaces operate correctly or are documented not applicable.
17. Perform Configuration-Specific Electrical Safety
Action: Complete the electrical-safety procedure for the exact Servo-u, mains cord, protective-earth class, applied parts, modules, external DC configuration, and connected accessories. Record analyzer identification, standard/method, test points, limits, and actual measurements. Evaluate the configured system, not an incomplete patient unit alone, when the controlled procedure requires it.
Expected outcome: Every required protective-earth, leakage, applied-part, and accessory measurement passes its documented criterion.
18. Restore, Retest, and Document
Action: Remove temporary test settings and fixtures, restore authorized clinical defaults and alarm settings, reinstall all covers, dummy modules, battery modules, cassette, and accessories, and independently verify the configured circuit. Repeat the required final pre-use check, clean the unit, and document parts, measurements, software/service status, corrective work, and disposition.
Expected outcome: No test setting remains; the final pre-use check and configured-system verification pass; documentation is complete; and the Servo-u is formally returned to service or clearly quarantined.
Electrical Safety Testing
The Servo-u uses a protective-earth mains connection and may include applied parts, external DC, modules, connected accessories, and data interfaces that affect the test method. The reviewed public manual does not provide one universal numeric limit for every regional standard and configuration. Use the current controlled Getinge procedure, exact equipment classification, and electrical-safety standard adopted by the facility.
Analyzer / serial / calibration due:
Result =
Mains cord / equipment class / applied parts / modules / external DC / accessories:
Result =
Standard / method / governing limits:
Result =
Protective-earth resistance:
Test points =
Limit =
Highest result =
Pass / Fail =
Equipment or touch leakage:
Limit =
Highest result =
Pass / Fail =
Applied-part / module / accessory measurements:
Limits / results / N/A =
Pass / Fail Criteria
Pass
- Exact model, serial, system version, hours, PM status, patient unit, user interface, power, gas, cassette, circuit, modules, options, and field actions are documented
- Labels, enclosures, controls, alarms, cart, brakes, power, grounding, batteries, gas connections, cooling, modules, cassette, circuit, and accessories pass inspection
- Cleaning/reprocessing is acceptable and annual/5,000-hour authorized preventive maintenance is complete
- Pre-use check, gas/oxygen, ventilation performance, alarms, safety responses, power transfer, charging, monitoring, therapies, interfaces, and options pass
- Battery modules have acceptable status/capacity and no expiration, diminished-capacity, or reliability warning remains
- Configuration-specific electrical safety, settings restoration, and final pre-use check pass
- No unresolved physical, contamination, gas, ventilation, sensor, alarm, power, software, field-action, or safety fault remains
Remove From Service
- Preventive maintenance is overdue by date or operating hours, or authorized personnel, current documentation, original parts, calibrated equipment, or required fixtures are unavailable
- Physical damage, liquid entry, contamination, blocked cooling, unsafe mounting, damaged power/gas component, battery defect, abnormal heat, or unusual noise exists
- Pre-use check, cassette, leakage, gas/oxygen, ventilation, monitoring, alarm, safety, power-transfer, charging, option, interface, or electrical-safety testing fails
- A battery module reports expiration, imminent expiration, diminished/unreliable capacity, or cannot provide the required controlled test performance
- The exact configuration, clinical settings, circuit, field-action status, controlled limits, or final results cannot be established
- Any unresolved condition could interrupt ventilation, alter gas/pressure/flow/volume delivery, disable monitoring or alarms, or compromise electrical safety
Copy/Paste CMMS Work Order Procedure
Do not return the Servo-u to service with overdue authorized maintenance, a failed pre-use check, unacceptable battery status, inaccurate gas or ventilation delivery, unreliable alarm, failed option or power transfer, failed electrical safety, unresolved contamination, or any temporary test setting left in place.