V. AUX OUTPUT
The output terminal strip provides an additional output to accomodate 12 volt accessories, such
as: Kussmaul’s 12Vdc air pump. The AUX output works in conjunction with a front panel mounted
rocker switch. For normal operation, the rocker switch should be left in AC mode, which means that
the aux accessory works only when shoreline power is supplied to the charger. With the switch in
DC mode the aux accessory will operate when AC power is ON or OFF. In either position the aux
output operates from the vehicle’s batteries, while the charger automatically recharges the batteries
as required.
VI. AUX OUTPUT AUTOMATIC RESET FUSE
The LPC 20 contains an internal automatic reset fuse. Should the AUX output fuse open, reset the
fuse by cycling the AC input power (shore line).
VII. LED STATUS INDICATORS
1. AUX ON
: Indicates that power to the AUX output terminal is ON.
2. AC ON
: Indicates that AC input voltage is present. Note: Battery must be above 9Vdc and of
proper polarity.
3. BATTERY OK
: Indicates a battery of proper polarity is connected to the charger output terminals.
VIII. COOLING FAN
The LPC 20 is fan cooled and automatically cycles on and off depending on the output load current.
Air is circulated from the rear panel and exhusted through the front panel.
OPERATION
I. BATTERY CHARGER OUTPUT
1. A discharged battery is recharged to roughly 90% or until the current tapers down to less than 2
amps. The ouput voltage never exceeds the float voltage, which is regulated from 0 to 20 amps
(current-limit).
2.
The charger will continue to charge the battery until the voltage at the battery reaches float voltage
level.
II. AUX OUTPUT
1. The AUX output is current-limited to 15 amps via an internal automatic reset fuse. The AUX output
shares current demand with the battery output. The combination of both outputs never exceeds
20 amps. If the AUX output demands 15 amps then the battery output will be limited to 5 amps.
2. The AUX output voltage follows the battery output voltage.
170 Cherry Avenue
West Sayville, NY 11796
www.kussmaul.com
Ph: 800-346-0857
Fax: 631-567-5826
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