www.nationalrailwaysupply.com 4
01545J
surfaces at temperatures below 50
°
F is not
recommended. Under cold conditions, the surface
should be warmed before application. Once properly
applied, low temperatures will not affect the bond
strength.
Remove the adhesive's protective strip and press the
probe firmly against the battery to ensure good
adhesion.
Securely fasten the temperature probe cable to
protect the probe from being torn from the
battery.
Secure the probe's cable to a fixed object to
ensure the probe will not be pulled loose. Use a
cable tie mount on the battery or on the adjacent
battery, if necessary.
8. OPERATION
The battery charger is adjustable with the three
rotary switches on the front of the charger. The
switches (settable between 10.00 and 19.99)
determine the float voltage for the batteries.
SET
THE FLOAT VOLTAGE TO THE BATTERY
MANUFACTURER'S SPECIFIED VOLTAGE FOR
77
°
F.
The charger will then electronically charge the
batteries to the voltage specified on the switches. To
set the switches, use a small screw-driver and turn
the switch so that the arrow head on the slot is
pointing to the desired number. Set the switches in
the following manner. If the desired battery voltage is
13.38 volts, set the top switch to 3, the middle switch
to 3, and the bottom switch to 8 (see the figure
below). This will provide you with the proper
charging voltage. The tens digit is always a one (1)
and cannot be changed.
BE SURE EACH SWITCH
IS SET ON A NUMBER AND NOT BETWEEN
NUMBERS.
If a switch is set between numbers, the
output current will go to zero and the yellow charging
LED will flash.
The charger does not have a power switch. When
the AC power is applied to the charger, the DC
output will start and the yellow LED will be on. To
turn off the charger, disconnect the AC power
source.
9. MAINTENANCE
The battery charger requires minimal maintenance.
It should be kept clean and all connections are to be
periodically tightened.
BE SURE THE CHASSIS IS
SECURELY GROUNDED.
If any problem cannot be
resolved, consult the nearest NRS service agent.
10. SERVICING
If the battery charger operates improperly, follow the
steps below.
a. Begin by checking the voltage switches to
verify their settings against the specifi-
cations of the batteries.
b. Next, remove the small cover on the front of
the charger and make sure all of the binding
post nuts are tight. Also check the jumper
tap configuration for the AC voltage used.
c. Check the fuses to make sure they have not
blown.
d. Check the circuit breaker to see if it has
opened and push it in to reset it, if
necessary.
e. Check the polarity between DC output and
the battery and make sure their connections
are tight.
f. If the steps above do not solve the problem,
contact your local NRS service agent.
11. CHARGER SPECIFICATIONS
AC INPUT VOLTAGE:
115 VAC (100-128) or 230 VAC (200-256)
AC INPUT CURRENT:
12.4 amps for 115 VAC (full power)
6.2 amps for 230 VAC (full power)
AC INPUT FREQUENCY:
48 – 65 Hertz (single phase)
AC LINE REGULATION:
For a constant output current at 2.00 volts/cell
+8.7% for 10 cells
+24.4% for 8 cells
AC
FUSES:
MDA 10 or equivalent
POWER
FACTOR:
Percentage at 20.0 amps DC current
76% at 14.0 volts
86% at 18.0 volts
DC
OUTPUT:
Voltage range
10.00 – 19.99 + 0.1 volts
Current
maximum
40.0
+ 5 amps
