Kussmaul Electronics 091-168-12 - Manual (Page 2)

INTRODUCTION
SELF DIAGNOSTIC DISPLAY
1. The charging protocol is a modifed 3-step configuration. Whenever the vehicle is
powered from a shore line the charger charges the battery at a "boost" rate of 14.25 volts
for approximately 1.5 hours. At the completion of the boost phase the output voltage
switches to the float rate of 13.25 volts.
2. An external dual bar graph indicator displays the chargers actual output voltage and
current.
3. An analog meter on the front of the charger also indicates charger output.
4. Output voltage of the charger is constant voltage, controlled by the patented "Sample
and Hold" circuitthat eliminates the voltage drop in the charging wires and current limited
to protect the charger and the batteries.
5. Maximum charger output current is limited to 50 amperes.
6. The charger is reverse polarity protected to prevent damage if the output wires are
inadvertently reversed.
The Auto Charge SD 150, Model 091-168-12, is a state of the art, high output completely
automatic single channel battery charger specifically designed for recharging and maintaining
the multiple batteries as found in modern emergency vehicles. The charger contains many
features that enhance performance and provide the vehicle user with self-diagnostics of the
chargers operation.
The charger contains self diagnostic circuits whose outputs are displayed on a 10 LED display.
These aid in charger installation, servicing, and troubleshooting and are as follows
POWER
RESET
BATTERY CONNECTION
EQUALIZED
HI RESISTANCE
HI TEMPERATURE
HI VOLTAGE
LOW VOLTAGE
SHUTDOWN
CHARGER INOP.
FAN ON
E SD
CHARGER
R