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Manufacturer
Model
What This Guide Helps With
Low or inconsistent flushing pressure causing incomplete channel flushing, poor cleaning performance, or inability to properly process endoscopes.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Confirm the scope is not in use and has been removed from any patient procedure.
- Expected: Device is safe to troubleshoot without impacting patient care
- Why it matters: Prevents contamination risk and ensures proper reprocessing workflow
Verify Water Supply Connection and Pressure Source
- Check that the incoming water line is securely connected and fully open.
- Inspect facility water supply valve
- Ensure no kinks or restrictions in supply tubing
- Expected: Steady, unrestricted water supply to the unit
- Why it matters: Low incoming pressure directly affects flushing performance
Inspect External Tubing and Connections
- Check all hoses from the unit to the scope interface.
- Look for kinks, compression, or loose fittings
- Ensure proper connection at all ports
- Expected: Tubing is intact with no restrictions or leaks
- Why it matters: Even minor restrictions can significantly reduce pressure
Check for Leaks at Scope Interface or Ports
- Observe for any visible leaks during operation.
- Run a flush cycle and watch for dripping or spraying
- Tighten connections if needed
- Expected: No visible leaks and stable pressure
- Why it matters: Leaks reduce effective pressure reaching the channels
Verify Proper Scope Connection and Channel Hookup
- Ensure all channels are connected correctly using the appropriate adapters.
- Confirm correct hookup configuration for the scope type
- Check for loose or mismatched connectors
- Expected: Properly connected channels with no bypass or misrouting
- Why it matters: Incorrect setup can split or reduce pressure across channels
Inspect and Replace Filters (If Equipped)
- Check any inline water filters on the unit.
- Remove and inspect filter for debris or clogging
- Replace if dirty or restricted
- Expected: Clean filter allowing normal flow
- Why it matters: Clogged filters are a common cause of low pressure
Check for Partial Channel Blockage in Scope or Adapters
- Rule out downstream restriction.
- Disconnect scope and run flush test
- Compare pressure with and without scope attached
- Expected: Normal pressure without scope indicates scope-related restriction
- Why it matters: Blocked channels or adapters reduce flow and pressure
Observe Pump Operation and Sound
- Listen for pump behavior during operation.
- Note if pump sounds weak, inconsistent, or unusually quiet
- Watch for intermittent cycling
- Expected: Smooth, consistent pump operation
- Why it matters: Irregular pump function suggests internal wear or failure
Power Cycle the Unit
- Reset the system to clear potential control issues.
- Turn unit off
- Wait 10–15 seconds
- Restart and test flushing
- Expected: Pressure returns to normal if issue was control-related
- Why it matters: Clears temporary faults affecting pump performance
If the Problem Persists
If all external causes (water supply, tubing, filters, connections, and scope issues) have been ruled out, the issue is likely internal (pump degradation, internal valve failure, or control issue).
Remove the device from service, label it Out of Service, and send it for repair or bench evaluation.
Knowing when to stop prevents unnecessary risk and ensures proper equipment handling.
Clinical Use Tip
Do not attempt to troubleshoot flushing pressure issues while a scope is in clinical use. Always process scopes off-line to avoid contamination or improper cleaning.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Staff reported weak and inconsistent flushing pressure during scope processing."
Cause
What was observed during troubleshooting.
Example:
"Clogged inline water filter restricting flow and reducing system pressure."
Resolution
What action was taken.
Example:
"Replaced filter, verified stable pressure during flush cycle, and returned unit to service."
Helpful Details to Include (If Known)
- Water source tested and verified
- Tubing condition (kinks, leaks, secure connections)
- Filter condition and replacement status
- Pressure behavior with and without scope attached
- Pump sound and consistency
- Any visible leaks
- Final device status (returned to service or sent for repair)
Final Thought
Start with the water supply and external flow path before suspecting internal failure. Most pressure issues are caused by restrictions, leaks, or setup errors. Escalate only after these are ruled out. Proper documentation supports repeatable, efficient troubleshooting and maintains patient safety.
That is successful troubleshooting.