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What This Guide Helps With
Troubleshoot disposable installation, priming, recognition, seating, connection, and visible disposable defects before suspecting an internal loading or sensing problem.
Step-by-Step Troubleshooting
1. Protect the Patient and Maintain Therapy
Do not troubleshoot the Rapid Infuser RI-2 while a patient depends on unreliable rapid infusion. Transfer fluid or blood-product delivery to another verified device or approved alternate method as clinically appropriate.
If the disposable cannot be loaded, primed, or recognized reliably, remove the affected unit from active clinical use until evaluated.
Expected outcome: Patient therapy is maintained independently of the device being troubleshot.
2. Confirm the Exact Reported Condition
Determine whether the disposable:
- Will not physically load
- Loads but will not remain seated
- Cannot complete priming
- Is not recognized after installation
- Was previously operating before the problem appeared
Inspect the display for the exact message or indication without assuming an internal failure.
Expected outcome: The failure is reproduced or clearly defined. If the device operates normally and the reported condition cannot be reproduced after verification, continue through final functional testing before returning it to service.
3. Verify Basic Device Condition and Power
Confirm the unit powers normally and completes its accessible startup sequence without unrelated faults.
Inspect the exterior for impact damage, contamination, fluid intrusion, or obvious mechanical damage around the disposable-loading area.
Expected outcome: The unit powers normally and the loading area is externally intact. If startup fails independently of the disposable, stop and evaluate the device under the appropriate startup-failure process.
4. Inspect the Disposable Set
Remove the disposable and inspect it for:
- Incorrect type or incompatible disposable
- Torn, crushed, kinked, or deformed tubing
- Damaged connectors
- Contamination
- Distorted disposable components
- Packaging damage
- Improperly positioned tubing or chambers
Use only an appropriate disposable intended for the RI-2.
Expected outcome: The disposable is correct, undamaged, and suitable for installation. Replace a visibly defective disposable before proceeding.
5. Reload the Disposable Carefully
With the device removed from patient use, reinstall the disposable according to its intended external routing and seating points.
Verify that tubing is not trapped, crossed, twisted, stretched, or pinched and that all accessible disposable components sit fully in their intended locations.
Do not force the disposable into place.
Expected outcome: The disposable seats without excessive force and all accessible loading points close normally. If proper reseating corrects the issue, complete priming and functional verification; if successful, troubleshooting can stop.
6. Check Doors, Latches, and Accessible Loading Surfaces
Inspect externally accessible doors, latches, guides, and seating surfaces for:
- Debris
- Dried fluid
- Obstruction
- Visible damage
- Components that do not close completely
Clean only according to approved facility and manufacturer-compatible practices.
Expected outcome: The loading mechanism closes freely and completely with no visible obstruction.
7. Attempt Priming With a Known-Good Disposable
If the initial disposable remains suspect, install a new known-good compatible disposable and use an appropriate test fluid source during bench evaluation.
Observe whether the system recognizes the disposable and progresses through normal priming.
Expected outcome: The known-good disposable loads, is recognized, and primes normally. If so, the original disposable was the likely cause and troubleshooting can stop after final verification.
8. Inspect External Fluid Connections and Source Setup
Confirm the source container, reservoir connections, tubing connections, and clamps are arranged correctly and are not preventing filling or priming.
Look for closed clamps, collapsed tubing, empty source containers, or loose connections that could interrupt the prime sequence.
Expected outcome: Fluid can move freely through the externally accessible disposable pathway without an obvious restriction.
9. Perform Final Functional Verification
Using an appropriate test setup and approved fluid, verify that the RI-2:
- Accepts the disposable
- Completes priming
- Operates without repeated recognition or loading faults
- Maintains a stable external fluid path
- Produces expected audible and visual indications during normal operation
Do not return the device to service based solely on successful loading.
Expected outcome: The complete disposable-loading and priming process operates normally. If all checks pass, troubleshooting is complete.
10. Escalate Persistent Loading or Recognition Failure
If multiple known-good disposables cannot be loaded, recognized, or primed after all external causes are eliminated, stop troubleshooting.
Do not bypass interlocks, alter unauthorized configuration, or disassemble internal loading or sensing mechanisms.
Expected outcome: The device is removed from service for qualified evaluation rather than repeatedly tested in clinical use.
If the Problem Persists
Common external causes such as disposable damage, incorrect seating, tubing routing, fluid-source setup, and visible loading obstruction have been ruled out.
The remaining cause may involve an internal sensor, loading mechanism, actuator, control circuit, or service-level configuration issue.
The device should be:
- Removed from service
- Labeled Out of Service
- Sent for repair or bench evaluation
- Evaluated using appropriate manufacturer documentation and approved test equipment
- Repaired or configured only by qualified personnel
After corrective work, perform appropriate return-to-service testing before clinical use.
Knowing when to stop external troubleshooting and escalate is proper troubleshooting.
Clinical Use Tip
Never force a disposable into the RI-2; resistance may indicate incorrect routing, damaged components, or an obstruction that could compromise rapid fluid delivery.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Clinical staff reported that the RI-2 disposable would not complete loading or priming."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found the disposable tubing incorrectly seated in the external loading path."
Resolution
What action was taken.
Example:
"The disposable was correctly reinstalled, priming completed normally, and the unit passed functional verification before return to service."
Helpful Details to Include (If Known)
- Exact display message
- Disposable type used
- Whether the disposable physically loaded
- Whether recognition failed before or during priming
- Tubing condition
- Door or latch condition
- Known-good disposable result
- Fluid-source setup
- Visible contamination or damage
- Final priming result
- Final device status
Final Thought
Protect the patient first, verify the disposable and external loading path before assuming an internal failure, confirm operation with a known-good setup, and document the verified complaint, cause, and resolution clearly.
That is successful troubleshooting.