100-214-239 Rev. A 7-5
Troubleshooting Charts
Digital Sonifier
7.2.3 Stud Reinsertion
The Stud is intended to be a use-only-once part, as it has knurls on its end which ‘bite’ into the
relatively softer horn material. The studs are also specially designed to withstand ultrasonic
stresses. If you must temporarily re-use a used stud, especially with an Aluminum horn, it is
very important to clean the threads and the horn of the previous shavings.
1. Using a file card or wire brush, clean any chips from the knurled end of the stud.
2. Using a clean cloth or towel, clean the threaded hole.
3. Examine the knurled end of the stud. If worn, replace the stud. Examine the stud
and threaded hole for stripped threads. Do not use a damaged ultrasonic horn or
converter.
NOTE
i Threaded studs cannot be re-used in titanium horns.
4. Clean the stud and the threaded hole before reinserting it.
5. Apply one drop of Loctite to the stud and insert it into the horn.
6. Retighten the stud. Use the following torque specifications:
After the Stud has been reinserted, you can reassemble the Horn to the Converter. Follow the
same procedure as found in the Installation section of this manual. See
Section 4.4, Assembling
the Equipment,
beginning on page 4-9.
7.3 Troubleshooting Charts
Use the following troubleshooting charts for possible problem conditions and resolutions. The
charts are based on the assumption that the proper setup and operation instructions have been
followed and/or the system was working and then developed a problem.
Stud Size Torque Specification Stud EDP number
3/8-24 x 11/4 in 290 in lbs/33 Nm 100-098-121
3/8-24 x 11/2 in 290 in lbs/33 Nm 100-098-120
1/2-20 x 11/4 in 450 in lbs/51 Nm 100-098-370
1/2-20 x 11/2 in 450 in lbs/51 Nm 100-098-123
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