On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Identifies external causes of spray arm blockage that reduce cleaning effectiveness, such as debris, mineral deposits, or misalignment, preventing incomplete cycles.
Step-by-Step Troubleshooting
Ensure Patient and Staff Safety
Confirm washer is empty and staff are clear of potential spray.
Why: Prevents injury from sudden water release or chemical exposure.
Inspect Spray Arms for Obstructions
Remove upper and lower spray arms. Check for visible debris, detergent buildup, or mineral deposits in nozzles.
Expected outcome: Nozzles should be clear; debris can cause weak or uneven spray.
Clean Spray Arms
Rinse thoroughly under tap water; use a soft brush or toothpick to clear small holes.
Expected outcome: Water flows freely through all spray holes.
Check Spray Arm Rotation
Manually rotate the spray arms to ensure they move freely without obstruction.
Expected outcome: Spray arms rotate smoothly; restricted movement indicates blockage or mechanical interference.
Inspect Connections and Fittings
Verify spray arms are seated correctly on their mounts and that hoses or connectors are not kinked or loose.
Expected outcome: Proper alignment ensures consistent water distribution.
Run a Test Cycle
With washer empty, run a rinse cycle to observe spray arm rotation and water coverage.
Expected outcome: Spray arms rotate fully and no unusual noises are present; water reaches all areas of the chamber.
If the Problem Persists
All external causes have been ruled out; internal flow issues or pump problems may exist.
Remove the washer from service.
Label “Out of Service” and send for repair or bench evaluation.
Why: Continuing use could compromise cleaning efficacy and patient safety.
Clinical Use Tip
Never troubleshoot with instruments inside the washer.
If immediate cycle availability is required, transfer instruments to another washer-disinfector.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Staff reported poor cleaning in the upper tray and uneven spray."
Cause
What was observed during troubleshooting.
Example:
"Upper spray arm partially blocked with detergent residue; rotation restricted."
Resolution
What action was taken.
Example:
"Spray arm removed, cleaned, and reinstalled; test cycle completed successfully."
Helpful Details to Include
- Spray arm removed and inspected
- All nozzle holes cleared
- Rotation verified
- Test cycle run successfully
- Final device status: fully operational
Final Thought
Thorough inspection and cleaning of spray arms ensures washer performance and patient safety. Proper documentation and knowing when to escalate protect staff and maintain device reliability.
That is successful troubleshooting.