Unipower ARE Series, Инструкция по установке и эксплуатации

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ARE Series Chargers
RS-759, Rev. 11 3-2
3.2 TROUBLESHOOTING CHART
The following troubleshooting chart is designed to help a qualified technician diagnose the causes of equipment
malfunctions. It is intended to be used with the wiring and schematic diagrams. Following this section on
troubleshooting is a section on testing or checking of components. For best results, first identify the nature of the
problem and then check for each of the possible causes listed beside the symptom.
Caution: For your own safety, before attempting any of these checks, be sure to disconnect both the AC
power source and the battery; discharge the filter and resonant capacitors, if required. If a particular
check requires AC and /or DC power, follow the specific instructions for that test.
TROUBLESHOOTING CHART
Problem Possible Causes Solution
A. AC breaker trips 1. Short circuit in AC power circuit. a. Inspect primary wiring for possible
shorts or grounded connections.
2. Input connected for lower voltage. a. Check position of jumpers. Consult
connection diagram.
b. Measure input voltage.
3. High voltage shutdown operating. a. Remove load and check for high
voltage.
4. Input voltage outside ANSI range. a. Measure input voltage.
5. Frequency of supply less than 57 Hz. a. Check input frequency.
6. Short in transformer winding. a. Visually inspect power transformer
primary coils for signs of overheating.
B. No DC output. 1. AC power outage. a. Check for AC voltage on both sides
of the breaker.
2. Short circuit in DC power circuit. a. Inspect secondary power wiring and
terminals for shorts or grounded
connections.
b. Check power rectifier diodes.
c. Check for shorted DC filter
capacitors.
3. Open circuit. a. Check all wiring for open or loose
connections.
C. Low DC output voltage.
Note: Panel VM may be defective.
Check voltage at DC output
Terminals with a portable meter.
1. Short in resonant circuit. a. Check triac.
b. Check resonant capacitor.
c. Check resonant circuit wiring.
2. Open negative sensing lead. a. Check wiring for continuity.
3. Unit in current limit. a. Adjust current limit potentiometer.
4. Component failure in control board. a. Replace control board.
5. Out of adjustment. a. Adjust float potentiometer.
b. Adjust coarse adjustment on control
board.
D. High DC output voltage. 1. Open triac in resonant circuit. a. Check triac.
2. Open sensing leads. a. Check for DC voltage across voltage
divider resistor.
3. Control board failure. a. Replace control board.
E. DC breaker trips. 1. Battery connection reversed. a. Check polarity of battery
connections.
2. Short circuit in DC power circuit. a. Inspect secondary power wiring and
terminals for possible shorts or
grounded connections.
b. Check power rectifier diodes or
molded rectifier (and DC filter
capacitors).
F. Excessive output current. 1. No current limit. a. Current limit control improperly set.
b. Component failure in control board.
Replace.
c. Check connections from shunt to
control board.