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About Ultrasonic Cleaning...

‘$OUND ADVICE’ about ~focusonics~

~ The Correct use of Ultrasonic Cleaning Baths ~


Many faults which occur to ultrasonic cleaning baths are due more to the use (or abuse), rather than any inherent component or other manufacturing fault within the unit.

It is important to regularly clean out the bath and replaced soiled cleaning solution. Debris on the bottom of the bath will abrade the surface of the base and cause premature failure and also compromise the efficiency of the transducers.

Ultrasonic activity should not be commenced before the transducers are covered by at least 50mm of solution. The heat generated can cause transducer failure.

Where side mounted heating panels are installed, the fluid should always be above these before they are activated. This is not a problem with units built with float switches or base mounted heaters.

Heaters should always be turned off and given about five minutes to cool down before commencing to empty the bath.

While filling the bath the power supply plug should always be removed from it’s socket. The same precaution should also be taken when emptying smaller baths not fitted with drain taps.

Water based solutions should only be used in bench-top cleaning baths. Acid based solutions should never be used, neither should flammable or toxic chemicals.
Where hydrogenated chemicals are component parts of the solution, ultrasonic activity will cause the cleaning solutions to develop pockets of highly concentrated acids. During ultrasonic activity, pressures of 3000 Kg/cm2 and temperatures of 1000 degC are generated when the cavitational bubbles burst, (implode). This means that while these solutions will probably still perform a reasonable cleaning operation, the soils removed will react with the chemicals in the solutions over a period of time and cause very corrosive chemical components to be formed which will attack the stainless steel. (source D. Rigby Ultrawave Limited of UK).

Always use a basket or jig to hold work away from the bottom of the bench-top tanks or base mounted Industrial units. The transducers can be damaged by work pieces being placed over them on the bottom of the bath.


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