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Manufacturer
Model
What This Guide Helps With
Failure of the drying cycle, wet scopes after processing, or drying phase aborts due to airflow, connection, or configuration issues.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Do not release or use any endoscope that has not completed a full drying cycle.
- Use an alternate, properly processed scope if needed.
Expected: Patient care continues safely using a fully processed scope
Why it matters: Moisture promotes microbial growth and compromises disinfection
Verify the Reported Issue and Cycle Behavior
- Confirm whether the drying cycle failed, shortened, or completed with wet scopes
- Note any alarms or messages related to airflow or drying
Expected: Clear identification of when drying fails
Why it matters: Helps determine if this is a consistent failure or intermittent condition
Check Compressed Air Supply (Most Common Cause)
- Verify facility compressed air is connected (if applicable)
- Check pressure is within acceptable range
- Listen for airflow during drying phase
Expected: Stable air supply with audible airflow
Why it matters: Insufficient air pressure prevents proper channel and exterior drying
Inspect Air Filters and Dryer Components
- Check air intake filters for blockage or contamination
- Inspect for overdue filter replacement
- Ensure no visible obstruction in air pathways
Expected: Clean filters allowing unrestricted airflow
Why it matters: Reduced airflow leads to incomplete moisture removal
Verify Proper Scope Channel Connections
- Confirm all channel connectors are correctly attached
- Ensure correct hookup for scope type
- Check for loose or disconnected tubing
Expected: Secure, correct channel connections
Why it matters: Drying requires airflow through all internal channels
Check for Kinked or Blocked Tubing
- Inspect all drying hoses and tubing for kinks or damage
- Straighten or replace as needed
Expected: Unobstructed tubing path
Why it matters: Blocked airflow prevents proper drying
Verify Drying Cycle Settings and Duration
- Check programmed drying time
- Confirm cycle parameters match facility protocol
- Ensure no custom cycle is reducing drying duration
Expected: Adequate drying time configured
Why it matters: Insufficient time may leave residual moisture even with proper airflow
Check Door Seal Integrity During Drying Phase
- Inspect door gasket for damage or debris
- Ensure door fully seals during operation
Expected: Tight seal with no air leakage
Why it matters: Air leaks reduce drying efficiency
Run a Test Cycle Without a Scope
- Run a full cycle empty
- Observe airflow and drying phase completion
Expected: Drying cycle completes without errors
Why it matters: Determines if issue is scope-related or system-related
If the Problem Persists
If airflow, connections, filters, and settings have been verified, the issue is likely internal (blower system, valves, sensors, or control failure).
Remove the device from service, label it Out of Service, and send for repair or bench evaluation.
Do not attempt internal disassembly. Knowing when to stop is proper troubleshooting.
Clinical Use Tip
Never assume a scope is safe if it appears only slightly damp. Even minimal retained moisture can compromise high-level disinfection. Always use a fully validated drying cycle.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Staff reported scopes coming out wet after ED-Flow cycle completion."
Cause
What was observed during troubleshooting.
Example:
"Clogged air intake filter restricting airflow during drying phase."
Resolution
What action was taken.
Example:
"Replaced air filter and verified proper airflow and complete drying cycle operation."
Helpful Details to Include (If Known)
- Air supply pressure verified
- Filters inspected/replaced
- Tubing checked for kinks
- Channel connections confirmed
- Alarm messages observed
- Drying cycle duration verified
- Door seal condition
- Test cycle results
- Final device status
Final Thought
Drying failures are most often airflow or connection related and can usually be resolved without invasive repair. Always prioritize patient safety by ensuring scopes are fully processed. When external causes are ruled out, escalation is the correct decision. Proper documentation supports both compliance and future troubleshooting efficiency.
That is successful troubleshooting.