ADB Signature Series User Manual

Ferroresonant L-828/L-829 CCR Troubleshooting
 2009 ADB Airfield Solutions, Incorporated
96A0288T 6-6
All rights reserved Issued 9/04
Problem
Possible Cause
Corrective Action
3. Output Current
always 6.6 A/20 A or
more
Universal regulator controller not
calibrated
With regulator set on Step B100 (B5), adjust
R40 until a current reading of 6.6 A or 20 A
is measured.
Check remaining steps to verify the values
from Table 2-9.
Overcurrent condition
Refer to problem #2 in this table, Regulator
turns on but de-energizes suddenly.
4. Output Current
always 4.8 A or less
for 3-Step CCR or 2.8
A or less for 5-Step
CCR or 8.5 or less on
20 A
Defective control board
If problem exists in Remote and local control,
replace universal regulator controller.
SCRs always conducting
Verify SCR is triggering by replacing PCB.
Check SCRs and wiring for shorts in SCR
circuitry. Replace SCR snubber assembly.
Replace SCR.
Defective resonant circuit (transformer
or capacitor)
Visually inspect capacitors for damaged
housing or wire connections. Visually
inspect transformer for damaged coils,
connections, and/or wiring.
Faulty capacitors will exhibit a bulging case.
CCR overload
Remove section of load.
5. More than 2 seconds
required for CCR to
de-energize on open-
circuit load
Faulty overcurrent protection
Replace URC PCB.
6. Short lamp life
and/or high output
current reading on
panel ammeter
Incorrect output current adjustment
Refer to Output Current Adjustment in the
Operation section.
Faulty overcurrent protection
Replace URC PCB.
4. L-828 General
Troubleshooting
Procedures
(contd.)

ADB Signature Series Specifications

General

Brand	ADB
Model	Signature Series
Category	Controller
Language	English