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What This Guide Helps With
This guide addresses the “Cassette test failure! Check set.” alarm, which prevents infusion from starting due to a detected issue during the cassette system check. This may involve improper cassette installation, occlusion, or air in the line.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Stop the infusion immediately if active
- Transfer therapy to a backup infusion device
- Confirm patient continues receiving ordered therapy
Verify the Reported Alarm and Behavior
- Power on the pump and confirm the alarm message
- Determine when the alarm occurs (startup or infusion start)
- Check if infusion is prevented
- Look for additional alarms such as occlusion or air-in-line
Check Cassette Installation (Most Common Cause)
- Open the cassette door
- Verify correct Plum 360 cassette is installed
- Ensure cassette is fully seated and aligned
- Close the door firmly until latched
Inspect for Kinks or Occlusions in the Line
- Trace tubing from pump to patient
- Remove any kinks or closed clamps
- Ensure fluid path is unobstructed
- Check patient site if applicable
Check for Air in the Line
- Inspect tubing for visible air bubbles
- Backprime per procedure if air is present
- Ensure cassette and tubing are fully primed
Open and Re-Close Cassette Door
- Open the cassette door fully
- Re-seat the cassette properly
- Close the door securely
Replace the Administration Set
- Remove the current cassette/set
- Install a new compatible administration set
- Reattempt cassette test
Stop When Resolved
- Restart infusion once alarm clears
- Monitor briefly for normal operation
- Return device to service if functioning properly
If the Problem Persists
If all external causes (setup, occlusion, air, cassette) have been ruled out and the alarm continues, this indicates a likely internal cassette sensor or mechanism failure.
- Remove the pump from service
- Label as Out of Service
- Send for repair or bench evaluation
Clinical Use Tip
Never troubleshoot cassette or line issues while connected to a patient. Always transfer infusion therapy to a backup device first.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Pump displaying 'Cassette test failure! Check set.' and will not start infusion."
Cause
What was observed during troubleshooting.
Example:
"Cassette reseated and line inspected with no occlusion or air found. Fault persisted indicating possible cassette or internal detection issue."
Resolution
What action was taken.
Example:
"Replaced administration set and retested. If unresolved, removed pump from service and sent for repair. Verified alternate pump in use."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Cassette test failures are commonly caused by setup or disposable issues, but persistent alarms indicate internal faults. Always prioritize patient safety and escalate appropriately when external causes are ruled out.
That is successful troubleshooting.