100-412-182 REV. 06 5
1.2 General Precautions
Take the following precautions before servicing the power supply:
• Be sure the power switch is in the Off position before making any electrical connections
• To prevent the possibility of an electrical shock, always plug the power supply into a grounded
power source
• Power supplies produce high voltage. Before working on the power supply module, 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 module. Common points are tied to circuit
reference, not chassis ground. Therefore, use only non-grounded, battery-powered multimeters
when testing these modules. Using other types of test equipment can present a shock hazard.
• Be sure power is disconnected from the power supply before setting a DIP switch
• 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
• Be aware that the actuator is "armed" if air pressure is indicated by the pressure indicator on the
actuator front panel and/or the air pressure gauge in the remote box
• 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
NOTICE
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 folding 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.
Also see Table 1.1 Hearing Protectors.
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