Fire-Lite CHG-75 Battery Charger - Manual (Page 9)

LED Indicators Product Description
CHG-75 PN 51315:A 08/01/01 9
1.3 LED Indicators
LEDs are provided on the battery charger circuit board to monitor various conditions:
• AC LED - green LED indicates AC power is present
• Trouble LED - yellow LED turns on for charger troubles or trouble indication
from the Master Trouble Input
• Low Battery LED - yellow LED turns on when the battery voltage drops too low
• Charging LED - yellow LED indicates battery is being charged, turns off when
the CHG-75 is trickle charging
• Ground Fault LED - yellow LED turns on to indicate ground fault on the charger
• SLC Communication LED - green LED indicates SLC communication with
FACP
1.4 Charger Maintenance
The charger does not require regular maintenance. While installing the charger,
however, do not cut any jumpers when power is applied and make sure to maintain
proper polarity when connecting power leads and battery connections. To ensure
optimal operation of the charger, observe the following:
✓ Overload and reverse-polarity protection - fuses F2 and F3 (15 A, P/N:
12057) provide overload and reverse-polarity protection. Replace a blown
fuse with a fuse that has the same rating and type. Determine the cause of the
blown fuse.
✓ Periodic Inspection - periodically inspect the batteries for corrosion and
make sure that corrosive effects to the batteries do not affect the charger or
cabinet.
✓ Troubleshooting - most problems with a charger are due to faulty batteries or
loose connections. If you encounter problems, inspect the charger, the
batteries and all connections for loose wiring or short circuits.
✓ Replacing Batteries - replace batteries only with the same charge rate and
capacity as the other batteries in the set. For example, if replacing one of four
25 AH batteries, make sure the replacement battery has the same charge rate
and capacity as the other three batteries.