User Manual

Operating the Charger Normal Operation
26
CHG-120F Instruction 03/21/01 PN 50888:B0
Table 7 shows the conditions that cause the charger LEDs to come on:
Normal Operation
The CHG-120F charges batteries at 4.5 A. When batteries are fully charged, the charger
maintains a float charge of 27.6 VDC at a trickle charge rate of less than 400 mA. While
charging the batteries, the HI and LO Charge LEDs switch on and off approximately every
20 seconds. Also, one of the 23 V, 25 V, 27 V, or Low Battery LEDs also comes on,
depending on the battery voltage.
LED
Normal Operation AC Trouble Disconnected Battery Ground Fault Short Circuit Faulty Battery (or less the 21 V) Trouble (with AC Trouble Delay used) Trouble (Master Trouble In JP6 connected)
AC On

Trouble
 
Ground Fault

HI Charge
✩✩ ✩ ✩ ✩
LO Charge
(Loss of AC)
✩ ✩ ✩✩
27 V
✩✩ ✩ ✩✩
25 V
✩✩ ✩ ✩✩
23 V
✩✩ ✩ ✩✩
Low Battery
✩✩ ✩✩✩
Legend:

LED on.
✩ LED on or off, depending on battery voltage. Refer to “Normal Operation.”
Table 7 LED Status Indicators