Operating instructions

FC Operation & Maintenance Guide (20 & 25 Amp)

Inherent current limited at 100% to 110% of rated output

Temperature compensation

Output voltage changes in accordance with negative temperature coefficient of battery (-

0.12%

per degree F). This maximizes battery performance and life.

Protection

Current limited output; sustains short circuit

Standard AC and DC circuit breakers

Indicators

• DC voltmeter

• DC ammeter

• Alarms (FCA only):

Alarm Indicator FCA model suffix

AC on LED

Low battery voltage LED & form C contact -2231, -2431

Charger failure LED & form C contact -2231, -2431

AC fail LED & form C contact -2431 only

High battery voltage LED & form C contact -2431 only

Delay circuitry in the charger failure, low battery and high battery alarm systems prevents

spurious indications

Controls & adjustments

• Separate adjustments for float & boost voltages

• Separate adjustments for low and high DC alarms (FCA only)

• Optional boost timer (0-24 hours or 0-72 hours)

Ambient

Operates without de-rating from -10C to +50C. Humidity 5% to 95%, non-condensing.

Natural convection cooled.

Installation

3.1 Mounting (for dimensions, refer to drawings at end of manual)

Mount on a clean, dry, fixed wall which is protected from extremes of temperature. Allow at least 6

inches above and below the unit, and three inches either side for proper ventilation. The unit must be

mounted vertically.

Mounting screw size should be #10 minimum.

If the charger must be mounted on or in a vibrating enclosure, the mounting arrangement should be

designed to provide full vibration isolation.

Long battery cable runs, while not generally acceptable, are not a problem with the FC series

charger. SENS True Voltage Sensing circuit automatically compensates for voltage drop in the

charging leads.