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What This Guide Helps With
This guide addresses situations where the Hillrom Centrella Smart+ bed reports inaccurate or drifting weights. Symptoms may include:
- Weight readings that are inconsistent with known patient weight
- Sudden jumps or drops in displayed weight without patient movement
- Failure of weight-dependent alarms or functions
The guide focuses on external, easily verifiable checks before considering internal calibration or repair.
Step-by-Step Troubleshooting
Verify Bed is on a Stable Surface
- Ensure the bed is on a level, hard floor. Uneven surfaces can affect scale readings.
Why it matters: Scale sensors are sensitive to tilt and surface irregularities.
Check for Obstructions Under the Bed
- Remove floor mats, cables, or items under the bed that could interfere with weight sensors.
Confirm Bed is Unloaded
- Ensure no patient, linens, or equipment are on the bed when performing a test reading.
Inspect Cables and Connectors
- Check power cables and data connections to the scale module for secure attachment and visible damage.
Test with a Known Weight
- Place a calibration weight or a patient with a known, stable weight on the bed.
- Compare the reading to the known weight to identify the magnitude of the inaccuracy.
Check for Software or Firmware Errors
- Access the bed interface to verify no scale-related error messages are displayed.
- Restart the bed system if possible and re-test the scale.
Re-zero the Scale (If Allowed)
- Follow the manufacturer’s external procedure to zero or tare the scale.
- Retest with a known weight to confirm improvement.
If the Problem Persists
Common external causes have been ruled out (surface, obstructions, cables, simple zeroing). The scale module or internal electronics may be faulty.
Action:
- Remove bed from service or place an Out-of-Service label on the bed.
- Send the bed for bench evaluation or repair by authorized personnel.
Knowing when to stop is proper troubleshooting; avoid internal disassembly.
Clinical Use Tip
- Never rely on an inaccurate scale reading for medication dosing or patient weight-dependent calculations.
- Move the patient to another bed with a functioning scale if possible.
- Ensure all scale-based alarms are verified on a separate bed before patient use.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
“Bed reports patient weight inconsistently; sudden jumps observed.”
Cause
What was observed during troubleshooting.
Example:
“Bed placed on uneven surface; cables checked and secure; zeroing did not correct reading.”
Resolution
What action was taken.
Example:
“Bed removed from service; labeled Out-of-Service; sent for manufacturer repair.”
Helpful Details to Include
- Bed location and surface type
- Observed weight readings vs. expected weight
- Error messages displayed on interface
- Bed serial number and last calibration date
- Any recent maintenance or software updates
Final Thought
Accurate patient weight measurement is critical for safe care. Follow a structured, logical troubleshooting approach—starting with simple external factors—before escalating. Document all findings to support patient safety and maintain a clear maintenance record.
That is successful troubleshooting.