battery charger. If the fan should fail to oper-
ate, do not continue operation of the battery
After connections are made on the front
charger.
chassis assembly panel (para 2-3), prepare the
c. Set the power switch to ON. (The power
battery charger for operation as follows:
indicator lamp should glow.)
a. Loosen the quick-release fasteners on the
d. Observe the OUTPUT VOLTAGE meter
front panel protection plate (fig. 1-1) and allow
indication and rotate the VOLTAGE ADJUST
the front panel protection plate to open until
control clockwise until the desired output volt-
it rests on the front panel plate. (The front
age is obtained. Check the output voltage at
panel is now accessible.)
intervals during operation of the battery
b. Rotate the VOLTAGE ADJUST control
charger. When necessary, adjust the VOLT-
fully counterclockwise (minimum position).
AGE ADJUST control to maintain the desired
c. Connect the equipment to be powered to
output voltage.
t h e - and + OUTPUT terminals on the front
Caution: When in 28-volt-CHARGE opera-
panel of the battery charger. Be sure to ob-
tion, do not depress the PRESS TO TEST
serve correct polarity.
switch if the OUTPUT VOLTAGE meter indi-
cates less than 15 volts.
e. Depress the PRESS TO READ switch to
After performing the procedures given in
read the OUTPUT CURRENT meter indica-
tion.
a. If the equipment is to be used as a battery
charger, set the NORMAL-CHARGE switch to
CHARGE.
a. Set the power switch to OFF. (The indi-
b. If the equipment is to be used as a dc
cator lamp should extinguish.)
source for communication equipment, set the
b. Disconnect the equipment that was pow-
NORMAL-CHARGE switch to NORMAL.
ered from the + and - OUTPUT terminals.
Caution: A continuous flow of air through
the battery charger is necessary during opera-
c. Push the front panel protection plate
tion to prevent damage due to overheating.
against the front panel plate and secure with
Do not obstruct the louvers on each side of the
the quick-release fasteners.
