100-412-234 REV. 06 5
1.2 General Precautions
Take the following precautions before servicing the power supply:
• To prevent the possibility of an electrical shock, always plug the power supply into a grounded
power source
• To prevent the possibility of an electrical shock, ground the power supply by securing an 8 gauge
grounded conductor to the ground screw located next to the air outlet
• Power supplies produce high voltage. Before working on the power supply assembly, do the
following:
Turn off the power supply
Unplug main power
Allow at least 2 minutes for capacitors to discharge
• High voltage is present in the power supply. Do not operate with the cover removed
• High line voltages exist in the ultrasonic power supply assembly. Common points are tied to
circuit reference, not chassis ground. Therefore, use only non-grounded, battery-powered
multimeters when testing the power supply assembly. Using other types of test equipment can
present a shock hazard
• Keep hands from under the horn. Down force (pressure) and ultrasonic vibrations can cause
injury
• Do not cycle the welding system if either the RF cable or converter is disconnected
• When using larger horns, avoid situations where fingers could be pinched between the horn and
the fixture
• Ensure power supply installation is performed by qualified personnel and in accordance with local
standards and regulations
• In normal operation, bearing seals will retain an adequate amount of grease for safe bearing
operation. Bearing can leak but contains enough grease for the life of the bearing. Removing and
running without grease will void the warranty. For more information contact product support
CAUTION
Sound level and frequency of the noise emitted during the ultrasonic
assembly process may depend upon a. type of application, b. size,
shape and composition of the material being assembled, c. shape and
material of the holding fixture, d. welder setup parameters and e.
tool design.
Some parts vibrate at an audible frequency during the process. Some
or all of these factors may result in an uncomfortable noise being
emitted during the process.
In such cases operators may need to be provided with personal
protective equipment. See 29 CFR (Code of Federal Regulations)
1910.95 Occupational Noise Exposure.
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