Dynatron® 850plus & 550plus
ULTRASOUND - General Information
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Soundhead Temperature
When coupling is poor, the temperature of the soundhead rises and the patient does not
receive the full ultrasonic output. The Dynatron 850plus continuously measures the
temperature of the soundhead to ensure both that the patient is receiving the optimal
treatment and that the soundhead crystal is protected from overheating.
If the soundhead temperature approaches the maximum level, the POWER display will begin
flashing. Treatment can continue beyond this warning level, but the user should ensure
coupling is corrected. Under normal circumstances, improved coupling will reduce the
soundhead temperature and allow the treatment to continue.
If the temperature reaches the maximum level, the treatment is automatically paused, the
output power is stopped, a tone sounds and both the TIME and the POWER displays flash.
The soundhead must then be cooled down before the treatment can resume.
The soundhead will cool slowly if placed in the soundhead holder or if held exposed to the
air. Larger soundheads take longer to cool than smaller heads. To resume the treatment right
away, you can place the soundhead in cool/room temperature water to cool the head more
quickly.
NEVER USE ICE OR ICE PACKS TO COOL THE SOUNDHEADS as this is likely to cause
thermal shock to the electronic components of the soundhead and may necessitate a costly
repair. Heads damaged by thermal shock are not covered by the warranty.
When the temperature is again satisfactory, press the START key to resume the treatment;
output power resumes, the displays return to constant, and the timer resumes. As long as the
soundhead is too hot, the device will not allow you to resume the treatment.
To prevent soundhead overheating, check to be sure proper contact is being made throughout
the treatment, or, when treating in water, make sure that the applicator head is completely
under water. For direct coupling, you may need to apply more conductive gel or lotion
during the treatment to achieve better coupling.
You can also reduce the power during the treatment if you are treating an area where it is
difficult to obtain good coupling.
• Do not drop the soundhead on hard surfaces, do not cool the soundhead with ice water or
ice packs, do not allow the soundhead to reach maximum temperatures repeatedly, and do
not hold the soundhead in the air while it is delivering ultrasonic waves. All of these
conditions are likely to damage the soundhead crystal and/or cause stress to electronic
parts. Damage resulting from these conditions is not covered under the warranty.
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