AVTM6514J Rev. A (03/2003)
24
F
WARNING
If the HV OUTPUT cable is not properly maintained, unexpected
high voltages may be accessible to operating personnel.
3. Check all controls to be sure that they operate freely.
4. Wipe the entire case clean and check for damage.
5. Check the top panel for any damage to meters, switches, lamps, etc.
F
WARNING
The impulse capacitor may be charged to a lethal voltage. This
capacitor should be discharged using a safety grounding stick
before attempting repairs.
6. Clear a bench top work area, and remove the Impulse Generator electronics from
its carrying case. This is done as follows:
a. Remove the six screws holding the front panel into the case.
b. Carefully remove the front panel and electronics from the case, and place it on
the bench. The best position is with the front panel vertical and the unit resting
on the two transformers and the bank of capacitors.
7. Apply a safety ground jumper across the terminals of the impulse capacitor.
8. Check that all screws and nuts are tight.
9. Examine all electrical connections for evidence of corrosion, fracture, or burning.
10. Clean all bushings and electrical insulating supports with a clean, soft cloth. Do not
use solvents. Clean, low-pressure air may be used.
11. Inspect all resistor banks for burned sections or loose end bonds. Check the
capacitors for leaks or evidence of case swelling.
12. When work on the Impulse Generator has been completed, replace the electronics
in the carrying case, then run the Impulse Generator in accordance with the
following Performance Check procedure.
PERFORMANCE CHECK
To verify that the Impulse Generator is operating properly, perform the following
performance check. This procedure may be performed either in the shop after
performing routine maintenance or in the field before fault locating. Fault
characteristics can vary widely and in some cases can even temporarily clear themselves.
The performance check can verify the proper performance of the Impulse Generator so
Summary of Contents for 651403
Page 6: ...AVTM6514J Rev A 03 2003 2 Figure 1 Impulse Generator...
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Page 16: ...Figure 2 Schematic Diagram...
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