On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
This guide addresses situations where the Olympus UC1800 ultrasonic cleaner is not effectively cleaning instruments or other items. It focuses on simple, external, and easily verifiable causes—such as water quality, solution concentration, and load size—before assuming internal transducer or electronics failure. The goal is to restore cleaning efficiency safely and reliably.
Step-by-Step Troubleshooting
Verify Power and Controls
- Ensure the unit is plugged into a properly grounded outlet.
- Confirm the power switch is on and the display is functioning.
- Check that the timer and power settings are correct.
Why: The cleaner cannot operate effectively if it’s not receiving full power or is set incorrectly.
Check Water Level
- Ensure the water level is above the minimum fill line and below the maximum.
- Low water reduces ultrasonic cavitation, which diminishes cleaning performance.
Inspect Cleaning Solution
- Confirm you are using the correct ultrasonic cleaning solution recommended for the items being cleaned.
- Replace solution if it is dirty, contaminated, or has been used multiple times.
Why: Dirty or inappropriate solutions absorb ultrasonic energy, reducing cleaning effectiveness.
Check Water Temperature
- Verify the water temperature is within the recommended range (typically 30–50°C for general cleaning).
- Cold water can reduce ultrasonic activity, while overly hot water can damage some instruments.
Assess Load Size and Arrangement
- Ensure items are not touching each other or the tank walls.
- Avoid overloading the tank; too many items can block ultrasonic waves.
Why: Proper spacing allows uniform cavitation and improves cleaning efficiency.
Look for Tank Contamination or Deposits
- Check for scale, debris, or residue on the tank bottom.
- Clean the tank with a soft cloth and mild detergent if needed.
Check for Air Bubbles and Degassing
- When adding fresh solution, run the unit briefly to degas water (usually 2–3 minutes).
- Air bubbles reduce ultrasonic energy transmission.
Test Ultrasonic Function
- Use the “foil test” (placing a small piece of aluminum foil in the tank and running a short cycle).
- Even pitting on the foil indicates proper ultrasonic activity.
Why: Confirms whether the transducers are generating ultrasonic waves correctly.
If the Problem Persists
If power, solution, water level, temperature, load, and degassing are correct, and the foil test shows weak or no cavitation:
- Remove the device from service.
- Label it “Out of Service.”
- Send for repair or bench evaluation, as internal transducers or electronics may have failed.
Note: Knowing when to escalate is part of proper troubleshooting.
Clinical Use Tip
- Never clean sharp instruments directly while the unit is running if they could cause injury.
- Always ensure patient-use instruments are fully dried and properly disinfected after cleaning.
- Rotate cleaning cycles if multiple instruments are being processed to maintain consistent cleanliness.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
“UC1800 not cleaning instruments effectively; residue remains after standard cycle.”
Cause
What was observed during troubleshooting.
Example:
“Water level low, solution dirty, and items crowded in tank; ultrasonic energy not optimally delivered.”
Resolution
What action was taken.
Example:
“Refilled tank to proper level, replaced solution, rearranged items for spacing, ran degassing cycle; cleaning performance restored.”
Helpful Details to Include
- Water level checked
- Solution type and concentration verified
- Tank temperature measured
- Load arrangement inspected
- Foil test result noted
- Final device status (functional / out of service)
Final Thought
Effective ultrasonic cleaning requires attention to external factors first: water quality, solution concentration, temperature, and load arrangement. Patient safety depends on ensuring instruments are properly cleaned before use. Document all findings and know when to escalate for repair.
That is successful troubleshooting.