250 - 450 Sonifier Chapter 7: Maintenance
User’s Manual Reconditioning the Stack Interface
100-413-016 Rev. C 7 - 7
7.4.3 Horn Tip Cleaning
Take the following steps to clean the horn’s tip threads:
1. If the horn has a replaceable tip, remove it and clean its threads
in alcohol.
2. Swab out the end of the horn threads with a cotton swab and alco-
hol.
3. Make sure both the horn and the tip are clean and completely dry
before you reassemble them.
NOTICE
For information on tightening the tips, see Section 4.5: Connecting and
Removing Tips, Horns, and Converters, beginning on page 4-5.
4. Use a spanner wrench on the horn and an open-end wrench on
the tip to install the tip using the following torque specifications:
1/4-20 — tighten at 90-inch-lbs/10.16 Newton-meters
3/8-24 — tighten at 180 inch-lbs/20.33 Newton-meters
7.4.4 System Trouble Analysis Chart
Table 7.1 Symptom/Probable Cause
Symptom Probable Cause
Main power fuse fails or circuit
reader trips when system is plugged
into electrical outlet.
1. Line cord is shorted.
2. Power Switch has failed.
3. Line filter has failed.
Fan does not operate. Indicator light
fails to illuminate when power sup-
ply is energized.
1. Unplugged power supply.
2. Line cord has failed.
3. Power Switch has failed.
4. Fuse F1 has failed.
5. Line filter has failed.
Fan does not operate when power
supply is energized. Indicator light
illuminates.
1. Fan motor has failed.
2. Line cord failed.
3. Power Switch has failed.
4. Fuse F1 has failed.
5. Line filter has failed.
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