Fire-Lite CHG-120F Battery Charger - Manual (Page 8)

Introduction to the Charger
Specifications
8
CHG-120F Instruction 03/21/01 PN 50888:B0
The charger also provides the following features:
• AM-1 ammeter (0-10A) ordered separately
• VM-1 voltmeter (0-50 V) ordered separately
• Disable local ground fault detection
• Selectable reporting delay for loss of AC (8 or 16 hours)
Specifications
Table 1 contains electrical specifications for the charger:
Compliance with NFPA Codes and UL Standards
The charger complies with the following standards:
• NFPA 72 National Fire Alarm Code
• UL 864 Standard for Control Units for Fire Alarm Systems and UL 1481 Power
Supplies for Fire Alarm Systems
• CAN/ULC-S527-M87
Charger Maintenance
The charger does not require regular maintenance. While installing the charger, however,
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 F1, F2 and F3 (15 A, PN
12057 )
provide overload and reverse-polarity protection. Replace a blown fuse with a fuse with the
same rating and type.
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 battery, and all
connections for loose wiring or short circuits.
Replacing Batteries - Replacement batteries must have the same charge rate and capacity
as other batteries in the set. For example, if replacing one of four 55 AH batteries, make
sure the new battery has the same charge rate and capacity as the other three batteries.
Primary AC power in (TB1) 120 VAC, 60 Hz, 2 A
240 VAC, 50 Hz, 1 A
24 VDC Secondary input power
(use in battery calculations for FACP) 60 mA - current draw with
AC power loss
Form-C relay (TB3) 5 A at 30 VDC
Float charge voltage 27.6 VDC
Maximum charging current 4.5 A
Fuses F1-F3 (PN 12057) 15 A
Battery sizes 25 AH to 120 AH
Charging Time (to charge two fully discharged batteries) 25 AH – 9 hours
55 AH/60 AH – 20 hours
120 AH – 38 hours
Table 1 Charger Specifications