Using The Troubleshooting Chart - HindlePower AT30 SERIES Operating And Service Instructions

SERVICING THE AT30

3.3. USING THE TROUBLESHOOTING CHART

High voltages appear at several points inside the AT30. Use extreme
caution when working inside the enclosures. Do not attempt to work
inside the AT30 unless you are a qualified technician or electrician.
Disconnect and lock out all power from the AT30 before starting to
remove or replace any components. Turn the ac power off at the
distribution panel upstream from the charger. Disconnect the battery
from the AT30 output terminals TB1(+/-).
Before you try to use the troubleshooting chart, be sure that you have
followed the steps in Section 3.1.
The troubleshooting chart that begins on the next page is divided into
three (3) columns. To use the chart:
1. Make a list of the charger's condition, including the trouble symptoms.
2. Find the symptom(s) in the first column of the chart.
3. The middle column contains common causes for the problem you observe, in
order of probability.
4. Follow the action described in the right-hand column to correct the problem
and return the charger to normal service.
Determining the condition of the AT30:
• Is the front panel AC ON indicator lit?
• What is the ac voltage at the input terminals (measured with an ac
voltmeter)?
• What is the dc voltage at the output terminals (measured with a dc
voltmeter)?
• Does the front panel meter display any voltage or current?
• Are any alarm indicators lit?
• Do the front panel status indicators work (Charge Mode, for example)?
• Can you change the charger to the Equalize mode and back to Float?
• Is the charger making any noise? Is it unusually loud?
• Is there any sign or smell of smoking or burning?
While using the Troubleshooting Chart, refer to the internal component
layout drawings and connection diagrams in Appendix C. For instructions
on replacing components, see Section 3.5.
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WARNING