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CHG-120 Instruction 11/22/04 PN: 52459:A FCI P/N:9000-0572 15
3. Operating the Charger
Overview
This section contains information on starting the charger, interpreting the LED Status
Indicators on the charger, and normal operation of the charger.
Starting the Charger
Warning: Before starting the charger, do the following:
Follow the installation instructions in Section 2, “Installing the Charger.”
Verify proper polarity on all connections between the charger and the batteries, load,
and optional meters.
Make sure there are no short circuits between leads and between battery terminals.
Make sure the Battery Interconnect Cable(s) is not connected.
To start the charger, follow these steps:
4. Connect AC power to the charger. The AC On LED and Trouble LED go on.
5. Connect the batteries to the charger
6. Connect the Battery Interconnect Cable. The Trouble LED goes off.
7. Connect the charger to the load (such as a power supply, an amplifier, and so on).
Understanding the LED Status Indicators
The charger provides nine LED Status Indicators, which are identified in Figure 15. Also
refer to Table 7 for conditions, such as troubles, that cause LEDs to light.
Figure 15 LED Status Indicators
AC On Primary AC on
Trouble Charger in trouble condition (see Table 7)
Ground Fault Earth fault condition detected
HI Charge Charging current greater than 400 mA
LO Charge Charging current less than 400 mA (loss of AC)
27V Battery voltage greater than 27 VDC
25V Battery voltage between 25-27 VDC
23V Battery voltage between 23-25 VDC
Low Battery Battery voltage less than 23 VDC
Green LED
Yellow LED
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