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What This Guide Helps With
This guide addresses the “Too Long In Charge” alarm, which occurs when the chamber does not reach the required sterilization temperature within the allotted time. This can result in delayed cycles or incomplete sterilization, posing a direct risk to patient safety if instruments are used.
Step-by-Step Troubleshooting
1. Ensure Patient Safety First
- Remove the sterilizer from clinical use if a load is in question
- Do not use instruments from a failed or incomplete sterilization cycle
- Confirm alternative sterilization methods are available
2. Verify the Reported Alarm and Behavior
- Confirm the “Too Long In Charge” alarm is displayed
- Observe when the alarm occurs (startup or heat-up phase)
- Check if chamber temperature rises slowly or not at all
3. Check Steam Supply Valve
- Verify the facility steam supply valve is fully open
- Ensure no recent changes were made to the supply line
4. Check Steam Pressure to Unit
- Confirm incoming steam pressure is at least 50 PSIG
- Check facility gauges or upstream regulators if available
5. Inspect Steam Supply Piping
- Look for kinks, restrictions, or leaks
- Check for condensate buildup in the line
6. Evaluate Steam Regulator Function
- Observe if steam delivery appears inconsistent or weak
- Note any fluctuations in pressure or flow
7. Check Solenoid Valve Operation
- Listen for valve actuation during charge phase
- Identify if valves (S09, S02) fail to open or appear stuck
8. Rule Out Control or Calibration Issues
- Compare displayed temperature to expected conditions
- Note any inconsistent or inaccurate readings
9. Confirm Resolution
- Run a test cycle after corrective actions
- Verify normal heat-up time is restored
- Ensure alarm does not return
If the Problem Persists
If steam supply, valves, and external conditions have been verified:
- Internal faults such as regulator failure, solenoid malfunction, or control calibration issues are likely
- Remove the sterilizer from service
- Label the unit as Out of Service
- Send for repair or qualified bench evaluation
Clinical Use Tip
Never troubleshoot a sterilizer while it is actively being relied on for instrument processing. Always verify cycle completion and use a backup system before addressing alarms.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Sterilizer showing 'Too Long In Charge' alarm and not reaching temperature during cycle."
Cause
What was observed during troubleshooting.
Example:
"Steam supply valve partially closed and insufficient pressure reaching unit."
Resolution
What action was taken.
Example:
"Opened steam supply valve, verified proper pressure, and confirmed normal operation with test cycle."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
“Too Long In Charge” is a critical sterilization alarm that indicates the system cannot reach required conditions in time. Always start with steam supply and external factors before escalating to internal components. Proper troubleshooting ensures both device reliability and patient safety.
That is successful troubleshooting.