Draeger Primus
Dräger · Model Primus
• Personal anaesthesia assistant - The Dräger Primus was designed to be nothing less than your personal anaesthesia assistant. It’s a combination of time-tested design and state-of-the-art technology created to answer the demand for a modern, comprehensive anaesthesia solution for today’s increasingly complex healthcare environment. • Common operating philosophy - The Primus® uses the familiar user interface and operating philosophy common to all current Dräger medical devices. This means that in spite of its impressive level of sophistication, your staff will spend a minimum amount of time learning how to use the Primus. • Enhanced workflow - Features like fully automatic self-check, open architecture, standard user interfaces and flexible monitoring options were designed to help reduce costs, save time and allow caregivers to focus on their primary task – the patient. • ICU standard ventilation - An increasing percentage of critically ill patients in the operating room calls for new standards in anaesthesia platforms. With the E-Vent® plus high-speed electronic piston ventilator, the Primus® delivers just that – peak flow comparable to ICU ventilators while avoiding the need for drive gas. A full range of volume and pressure oriented modes provides the various options for every clinical situation. Additional advanced monitoring and ventilation mode packages are also available that will expand your capabilities. • Comprehensive monitoring - The Dräger Primus?® lets you monitor pulmonary function and ventilation parameters on a large, user-configurable 12,1“TFT colour display. Its open architecture design provides the option to add additional displays, permitting you to expand your monitoring capability to include haemodynamic and other data.
Key tips
- ·A failed daily leak test takes the machine out of service immediately - there is no acceptable workaround.
- ·Never run an agent-specific vaporizer with the wrong agent, even briefly, during testing.
- ·CO2-absorbent exhaustion mimics several unrelated fault symptoms - rule it out early.
Typical Failure Modes
Failure patterns typical of this equipment class - general BMET reference, not verified against this exact unit's own service history unless flagged. Severity is a category-level estimate.
Vaporizer calibration drift
HighSymptoms: Delivered agent concentration off, low/high agent alarm.
Root cause: Worn bellows or O-ring; agent contamination.
O2 failure / pipeline alarm
HighSymptoms: O2 low-pressure alarm, inability to ventilate.
Root cause: Pipeline disconnect or failed O2 flush valve.
Scavenging system fault
MediumSymptoms: High scavenger pressure, agent smell in OR.
Root cause: Obstructed scavenger line or failed regulator.
Absorber exhaustion
MediumSymptoms: Rising EtCO2, patient rebreathing.
Root cause: CO2 absorbent saturated.
Serviceable Parts & Consumables
The parts a BMET typically services on this class of equipment. Service class and relative cost are general engineering estimates for the category, not figures from this unit's documentation. Part numbers appear only when pulled from this unit's own service manual. Always confirm intervals and pricing against the manufacturer.
Vaporizer (agent-specific)
Requires periodic calibration.
Class Major service partRel. cost $$$$R&R Expert-level
Breathing circuit / bellows
Class Periodic replacementRel. cost $$R&R Fairly easy
CO2 absorber canister
Consumable, replace on schedule.
Class ConsumableRel. cost $R&R Easy
Scavenger interface & hose
Class Periodic replacementRel. cost $$R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Vaporizer (agent-specific) Requires periodic calibration. | Major service part | $$$$ | Expert-level |
| Breathing circuit / bellows | Periodic replacement | $$ | Fairly easy |
| CO2 absorber canister Consumable, replace on schedule. | Consumable | $ | Easy |
| Scavenger interface & hose | Periodic replacement | $$ | Fairly easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Daily pre-anesthesia machine check: leak test, O2 sensor calibration, per facility protocol
- ·Scheduled vaporizer calibration and agent-specific service
- ·Absorber / CO2 canister replacement
- ·Breathing circuit and hose inspection
- ·Annual full PM and electrical safety test
Troubleshooting Approach
A structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Vaporizer calibration drift
- Confirm the presentation - typically delivered agent concentration off, low/high agent alarm - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: worn bellows or O-ring; agent contamination.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the vaporizer (agent-specific) per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Symptom: Breathing circuit leak
- Confirm the presentation - typically low minute volume, volume loss, leak alarm - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: loose connections, torn bellows, cracked hose.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the breathing circuit / bellows per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Technical Specs
- Vaporizers (Max)
- Two
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Operating rooms
- Procedure / endoscopy suites requiring sedation
- Obstetric delivery rooms
Documents & Manuals
Troubleshoot this device with Bio
Describe a symptom or error code. Bio answers from this device's own documented error codes, failure modes, parts, and guides.
Ask Bio →