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What This Guide Helps With
Troubleshoots residual channel moisture after a completed purge/drying phase, including connection, adapter, airflow-path, loading, and utility-related causes.
Step-by-Step Troubleshooting
1. Protect the Patient and Reprocessing Workflow
Do not release an endoscope for patient use if required reprocessing or drying cannot be verified. Remove the affected scope from the clinical workflow and provide a properly reprocessed replacement.
Do not troubleshoot the ED-Flow while a scope required for immediate patient care depends on the unit.
Expected outcome: Affected scopes are withheld from use until proper reprocessing and drying are confirmed.
2. Confirm the Exact Reported Condition
Determine whether:
- The cycle completed normally.
- The unit reported any warnings or interruptions.
- Moisture is present in one channel or multiple channels.
- The problem affects one specific endoscope or multiple scopes.
- The condition began after a tubing, adapter, filter, utility, or configuration change.
Review the completed cycle status without assuming that a completed cycle proves adequate airflow through every connected channel.
Expected outcome: The problem is narrowed to a particular scope, channel, load, or reprocessor condition.
3. Inspect the Endoscope Connection Setup
After the equipment is safe to access, inspect all external channel connections, tubing, connectors, and adapters used for the affected scope.
Look for:
- Loose fittings.
- Partially seated connectors.
- Kinked tubing.
- Pinched tubing.
- Damaged seals.
- Incorrect adapters.
- Tubing routed in a way that restricts flow.
Reconnect questionable connections using the approved setup for the scope being processed.
Expected outcome: Every required channel has an unobstructed, secure connection. If proper connection restores drying, troubleshooting can stop after verification.
4. Verify Scope and Adapter Compatibility
Confirm that the selected scope identification, connector set, and external adapter arrangement correspond to the endoscope being processed.
Do not substitute improvised fittings or alter the channel configuration to force a connection.
If another compatible adapter set is available, compare it with the installed set for visible damage or incorrect assembly.
Expected outcome: The endoscope is connected with the correct, intact external interface.
5. Inspect External Airflow Components
Inspect accessible purge/drying tubing and external airflow components for:
- Moisture accumulation.
- Obstruction.
- Collapsed tubing.
- Loose connections.
- Visible contamination.
- Damaged fittings.
Do not disassemble internal pneumatic components.
Expected outcome: The external purge path is visibly clear and properly connected.
6. Check Loading and Endoscope Positioning
Verify that the endoscope and tubing are positioned without sharp bends, compression, twisting, or dependent loops that could trap fluid.
Confirm that accessories or other items in the chamber are not pressing against tubing or interfering with connections.
Expected outcome: Scope and tubing placement permit unrestricted drainage and airflow.
7. Determine Whether the Problem Follows the Endoscope
When permitted by facility infection-control procedures, compare performance using another compatible endoscope and approved connection set.
If the second scope dries normally, investigate the original scope and its adapter set rather than assuming an ED-Flow failure.
Expected outcome: Testing distinguishes a scope-specific condition from a reprocessor-wide drying problem.
8. Verify Relevant Utilities and Operating Conditions
Confirm that required external utilities are available and that no facility utility work, pressure issue, shutdown, or environmental change coincided with the complaint.
Inspect accessible utility connections for leaks, restrictions, or obvious damage.
Do not alter facility utility regulators or internal pneumatic settings without authorized procedures.
Expected outcome: Required external utilities are available and stable.
9. Repeat a Controlled Functional Cycle
After correcting any connection, positioning, or external airflow issue, run an appropriate controlled cycle with an approved test load or scope according to facility and manufacturer procedures.
Inspect the affected channels at completion using the facility-approved verification method.
Expected outcome: The purge/drying phase completes and the channels are acceptably dry. If confirmed, document the correction and troubleshooting can stop.
10. Remove From Service if Drying Remains Unreliable
If multiple correctly connected compatible scopes remain wet, the drying function cannot be considered reliable.
Remove the ED-Flow from service rather than repeatedly cycling clinical scopes without identifying the cause.
Expected outcome: An unreliable reprocessor is prevented from returning incompletely processed equipment to clinical use.
If the Problem Persists
Common external causes such as incorrect connections, damaged adapters, tubing restriction, scope positioning, scope-specific problems, and obvious utility issues have been ruled out.
The remaining cause may involve an internal pneumatic component, controlled airflow path, valve function, sensor input, configuration issue, or another service-level condition.
The device should be:
- Removed from service.
- Labeled Out of Service.
- Sent for repair or bench evaluation.
- Evaluated using appropriate Getinge documentation and approved test equipment.
- Repaired or configured only by qualified personnel.
After corrective service, complete the required functional and reprocessing verification before returning the ED-Flow to clinical use.
Knowing when to stop external troubleshooting and escalate is proper troubleshooting.
Clinical Use Tip
Never release a scope solely because the cycle reports complete if required channel drying cannot be verified.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Sterile Processing reported that endoscope channels remained wet after the ED-Flow completed the air-purge/drying phase."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found a partially seated channel adapter that restricted purge airflow to the affected scope."
Resolution
What action was taken.
Example:
"Reseated and inspected the adapter connections, completed a controlled cycle, verified proper drying, and returned the ED-Flow to service."
Helpful Details to Include (If Known)
- Endoscope make/model or identifying scope ID.
- Whether one or multiple channels remained wet.
- Cycle completion status.
- Any displayed warning or message.
- Adapter and tubing condition.
- Connections found loose or restricted.
- Whether another compatible scope was tested.
- Utility condition observed.
- Scope positioning.
- Results before and after correction.
- Final device status.
Final Thought
Protect the patient by withholding inadequately dried scopes, verify connections and external airflow before assuming internal failure, perform a controlled final check, escalate unreliable drying, and document the complete finding and resolution clearly.
That is successful troubleshooting.