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What This Guide Helps With
This guide addresses the Recorder Deviation Alarm, which occurs when the two temperature sensing elements in the chamber drain probe differ by more than 1°F. This condition can lead to inaccurate temperature monitoring and compromise sterilization validation.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Remove the sterilizer from service if the alarm occurs during a cycle
- Do not use loads processed during a questionable cycle
- Ensure alternate sterilization equipment is available
Verify the Reported Alarm and Behavior
- Confirm the Recorder Deviation Alarm is displayed
- Observe when the alarm occurs (heat-up, sterilize phase, or intermittently)
- Check for abnormal or inconsistent temperature readings
Check Recent Load and Environmental Conditions
- Verify the chamber was not overloaded
- Ensure proper load placement for airflow and steam penetration
- Confirm no excessive condensation or pooling water is present
Inspect Drain Area for Contamination
- Check for debris, residue, or scale near the drain probe
- Look for standing water affecting probe readings
- Clean accessible areas if contamination is present
Check Accessible Wiring and Connections
- Inspect visible probe wiring without opening panels
- Look for loose or damaged external connectors
- Ensure cables are not pinched or stressed
Power Cycle the Sterilizer
- Turn the unit off and wait 30–60 seconds
- Restart the sterilizer
- Observe if the alarm clears
Run a Test Cycle
- Perform an empty or test cycle if safe
- Monitor temperature readings for consistency
- Confirm whether the alarm reoccurs
If the Problem Persists
If the alarm continues after all external checks:
- External causes have been ruled out
- The issue likely involves internal sensor mismatch or calibration drift
- Remove the sterilizer from service
- Label the unit Out of Service
- Send for qualified repair or bench evaluation
Clinical Use Tip
Never troubleshoot or rely on a sterilizer during active patient care. Always move instruments to a verified working sterilizer before continuing processing.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Recorder Deviation Alarm displayed during sterilization cycle."
Cause
What was observed during troubleshooting.
Example:
"Temperature sensors in drain probe showing mismatch greater than 1°F with no external contributing factors."
Resolution
What action was taken.
Example:
"Removed unit from service and referred for probe evaluation and calibration."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Accurate temperature sensing is critical for safe sterilization. When sensor disagreement occurs, always verify external factors first and escalate appropriately to ensure reliable operation and patient safety.
That is successful troubleshooting.