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What This Guide Helps With
Use this guide for absent, slow, excessive, or incomplete filling and draining, or when the chamber cannot establish its normal operating level.
Step-by-Step Troubleshooting
1. Protect Processing Continuity
Stop using the cleaner if it cannot establish or remove the required chamber liquid level. An incomplete fill or drain can invalidate cleaning performance.
Move instrument processing to a verified alternative.
Expected outcome: No instruments depend on a cycle with uncertain liquid level or drainage.
2. Confirm the Exact Fluid Problem
Determine whether the chamber does not fill at all, fills slowly, overfills, stops below the expected level, will not drain, or leaves an abnormal amount of residual water.
Observe the phase in which the problem occurs.
Expected outcome: The issue is categorized as a supply, fill, level, or drain problem.
3. Verify Incoming Water Availability
Confirm required facility water service is available and accessible supply valves are open.
Look for kinked, crushed, disconnected, or leaking external supply hoses.
Expected outcome: Adequate external water supply is available. If restoring a closed or restricted supply corrects filling, verify a full cycle and stop troubleshooting.
4. Inspect Inlet Screens or Accessible Strainers if User-Serviceable
Where accessible without disassembly and allowed by normal maintenance practice, inspect externally serviceable strainers or screens for obvious debris.
Do not disassemble internal valves or plumbing manifolds.
Expected outcome: Accessible supply paths are unobstructed.
5. Check the Drain Path
Inspect visible drain hoses and facility drain connections for kinks, blockage, poor routing, backing-up water, or a facility drain problem.
Expected outcome: The drain path is open and properly routed. If correcting an external drain restriction restores normal draining, troubleshooting can stop after verification.
6. Inspect the Chamber for Obstruction
Check the chamber and accessible drain opening for labels, packaging debris, dropped items, excessive soil, or other visible material that could interfere with draining or level sensing.
Expected outcome: The chamber and accessible drain area are free of obstruction.
7. Verify the Unit Is Properly Positioned
Check that the cleaner has not been moved, tilted, or installed in a way that could affect drainage or fluid-level behavior.
Do not alter installation leveling without appropriate authorization.
Expected outcome: The unit appears correctly positioned and stable.
8. Observe Fill and Drain Behavior During an Unloaded Test
Run an appropriate unloaded test cycle and observe the chamber through normal external means.
Watch for water entering, stopping, draining, backing up, or leaking externally.
Expected outcome: The chamber fills and drains in a controlled manner. If normal operation is restored, troubleshooting can stop.
9. Stop if Overfilling or Leakage Occurs
If the unit continues filling excessively, spills water, or cannot stop at the intended level, terminate operation using normal controls and isolate the unit.
Expected outcome: Further leakage or flooding is prevented.
10. Escalate Persistent Level Problems
If water supply and drainage are good but level control remains abnormal, remove the unit from service.
Expected outcome: The cleaner is routed for evaluation of internal fill, drain, or level-control functions.
If the Problem Persists
External supply, hose routing, drain conditions, visible obstruction, and positioning have been ruled out. Remaining causes may involve internal valves, pumps, level sensors, pressure-related level measurement, control electronics, or internal plumbing restrictions.
The device should be:
- Removed from service
- Labeled Out of Service
- Sent for repair or bench evaluation
- Evaluated using appropriate manufacturer documentation and approved test equipment
- Repaired or configured only by qualified personnel
Verify correct filling, level control, draining, absence of leaks, and successful cycle completion before return to service.
Knowing when to stop external troubleshooting is proper troubleshooting.
Clinical Use Tip
Do not release a load from a cycle that operated with visibly abnormal fluid level or incomplete draining; reprocess the instruments through a verified process.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Sterile Processing reported that the CaviWave Pro filled slowly and aborted before reaching the required operating level."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found a kink in the external incoming water hose restricting flow to the cleaner."
Resolution
What action was taken.
Example:
"Corrected the hose routing, verified normal filling and draining during an unloaded cycle, and returned the unit to service."
Helpful Details to Include (If Known)
- No fill, slow fill, overfill, or incomplete fill
- No drain, slow drain, or residual water
- Water-supply valve status
- Supply and drain hose condition
- Facility drain behavior
- Visible chamber obstruction
- External leakage
- Whether the unit was recently moved
- Result of unloaded cycle
- Final device status
Final Thought
Fluid-level problems should be approached from the facility connection inward. Verify water, hoses, drainage, chamber condition, and installation before suspecting internal components, and remove the cleaner from service whenever fluid control is unreliable.
That is successful troubleshooting.