Ferroresonant L-828/L-829 CCR Troubleshooting
2009 ADB Airfield Solutions, Incorporated
96A0288T 6-8
All rights reserved Issued 9/04
Steps 1 or 2)
emitting loud hum,
not indicating
proper current, and
operating
erratically
Light inductive load (for
example, signs)
Increase load on regulator.
If you cannot increase the load, verify that you are
dealing with the right problem by placing a current
clamp on the output of the regulator and measuring the
frequency of the output. Verify that it is 60 Hz. If it is,
refer to Feedback Wiring Modification Procedure in
this section to modify wiring.
Investigate to see if the problem occurs in Step 5. If it
does not occur in Step 5, refer to Feedback Wiring
Modification Procedure in this section to modify
WARNING: Operating a regulator for long periods of time
while seriously overloaded may cause the regulator to overheat.
Troubleshooting
(contd.)
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