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Asset Type
Continuous Renal Replacement Therapy (CRRT)
Manufacturer
Model
What This Guide Helps With
This guide assists Clinical Engineering in troubleshooting situations where the Vantive PrisMax CRRT system reports an effluent scale error. Symptoms may include an alarm indicating a scale error, inaccurate effluent measurements, unexpected treatment pauses, or an inability to start therapy. Most issues originate from external factors such as scale misalignment, obstruction, or improper setup before considering internal failures.
Step-by-Step Troubleshooting
Ensure the machine is on a level, stable surface
- A tilted or unstable platform can cause the effluent scale to misread weight.
- Level the machine using adjustable feet if available.
Check for obstruction under the effluent bag
- Remove any packaging, tubing, or debris that might contact the scale.
- Ensure nothing is pressing against the bag that could affect weight readings.
Verify effluent bag placement
- Confirm the bag is properly seated in the scale basket or holder.
- Misaligned bags can trigger a scale error even if the bag is empty.
Inspect the scale mechanism and load cells visually
- Look for visible damage, corrosion, or foreign objects under or around the scale.
- Gently clean surfaces if necessary using manufacturer-approved cleaning methods.
Restart the CRRT system
- Power down and restart the machine to reset scale calibration errors.
- Observe if the error clears during startup.
Check software prompts for recalibration
- If the system prompts for scale calibration, follow on-screen instructions.
- Ensure calibration is performed with the effluent bag empty and properly positioned.
If the Problem Persists
If external checks and calibration do not resolve the issue:
- The scale mechanism or internal sensors may be malfunctioning.
- Remove the device from service.
- Label as Out of Service.
- Send for vendor repair or bench evaluation.
Note: Recognizing when external troubleshooting has been exhausted is essential to avoid unnecessary risk or patient safety issues.
Clinical Use Tip
Never attempt therapy on a patient if the effluent scale error is active.
Move the patient to another CRRT device to maintain treatment continuity.
Troubleshoot only when patient safety is ensured and therapy can be safely paused.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
“Effluent scale error” alarm during therapy setup.
Cause
What was observed during troubleshooting.
Example:
Misaligned effluent bag, slight debris under scale, or level inconsistency affecting weight measurement.
Resolution
What action was taken.
Example:
Level machine, remove obstruction, correctly reposition bag, restart device, and perform recalibration. If error persisted, device removed from service and sent for repair.
Helpful Details to Include
- Outlet tested and confirmed stable.
- Effluent bag replaced or reseated.
- Scale basket inspected for debris.
- Error cleared or persisted after system restart and calibration.
- Final device status: back in service or removed for repair.
Final Thought
Patient safety and logical troubleshooting are paramount. Always start with simple external checks and confirm proper setup before assuming internal device failure. Proper documentation supports accountability and efficient repair processes.
That is successful troubleshooting.