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38059D 

terminals on the side of the charger (see Figure 5.1).  
Tighten the terminals using the screws on the front 
of the charger.  Torque terminal screws to 18 in-lbs. 
(2N-m) 

WARNING:  FAILURE TO PROPERLY 

CONNECT THE AC VOLTAGE CONDUCTORS 
COULD CAUSE SERIOUS DAMAGE TO THE 
CHARGER.  BE SURE TO SET THE VOLTAGE 
SELECTION SWITCH ON THE SIDE OF THE 
CHARGER TO THE PROPER POSITION.

 

WARNING:  DO NOT OPERATE THE 

CHARGER WITHOUT PROPER GROUNDING. 

 

IMPROPER GROUNDING CAN RESULT IN THE 
RISK OF AN ELECTRIC SHOCK. 

 

Figure 5.1 

6. DC 

OUTPUT 

THE AC POWER TO THE CHARGER SHOULD 
ALWAYS BE DE-ENERGIZED WHILE MAKING 
CONNECTIONS TO THE CHARGER TERMINAL 
STRIP.  

The DC output wires should be stripped 

0.375 inches (9.5mm).  Insert the DC output wires 
into the proper terminals on the side of the charger 
(see Figure 5.1).  Tighten the terminals using the 
screws on the front of the charger.  Torque terminal 
screws to 18 in-lbs. (2N-m) Check to make sure the 
polarity of the DC output wires are the same as 
those connected to the battery.  The charger will not 
operate in a reversed polarity condition.  

WHEN 

CONNECTING THE DC WIRES TO THE 
CHARGER WITH THE AC POWER 
DISCONNECTED, A SPARK MAY OCCUR.  

This is 

caused by the output capacitors being charged by 
the batteries.  If the DC polarity is reversed, a circuit 
breaker will protect the charger from internal 
damage.  Correct the reversed wires and push the 
circuit breaker button back in. 

WARNING:  DO NOT TOUCH THE 

CHARGER'S TERMINALS OR AN ELECTRICAL 
SHOCK COULD OCCUR.  A VOLTAGE IS 
PRESENT ON THE DC TERMINALS EVEN AFTER 
THE AC IS DISCONNECTED BECAUSE OF THE 
ENERGY STORED IN THE CAPACITOR. 

 

7. TEMPERATURE 

PROBE 

The external temperature probe is an optional way of 
extending battery life by using temperature 
compensation.  One end of the temperature probe 
cable has a three-pin plug, which plugs into a 
receptacle labeled TEMP PROBE on the bottom

 

of 

the charger.  The other end of the cable has the 
temperature sensor sealed in a terminal. 

WARNING:  IT IS IMPORTANT TO MOUNT 

THE TEMPERATURE PROBE ON THE 
BATTERIES FOR PROPER TEMPERATURE 
COMPENSATION.  IF THIS CANNOT BE DONE, 
LOCATE THE PROBE AS LOW AS POSSIBLE IN 
THE BUNGALOW OR CABINET. 

Terminal-Type Probe 

The terminal-type probe should be attached to the 
negative (-) battery post near the center of the 
battery pack.  If the threaded stud is long enough 
above the battery jumper nut, attach the probe with 
another nut.  Torque this nut to proper specifications.  
If the stud is too short, the nut holding the jumper 
wire will need to be removed.  Open or remove the 
load and charging circuits to the batteries.  Remove 
the nut holding the jumper and add the probe, then 
torque the nut to the proper specifications.  Then 
close or connect the load and charging circuits back 
to the batteries. 

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 17.00) 
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 screwdriver and turn 
the switch so that the arrowhead on the slot is 
pointing to the desired number.  Set the switches in 
the following manner: If the desired battery voltage is 

Summary of Contents for ELC-12

Page 1: ... is charging in an enclosed area d Batteries contain caustic material which may cause burns Do not get in eyes on skin or clothing If the gelled or liquid content of the batteries contacts the skin or clothing wash the area thoroughly with water In the case of contact with the eyes flush immediately with clean water for 15 minutes and obtain medical attention e Only qualified personnel should prog...

Page 2: ... probe is not being used or the temperature probe is working improperly Temperature compensation uses a temperature reference of 77 F 25 C a voltage reference of 2 23 volts the voltage of a standard gel cell battery at 77 F and a compensation value of 3 0 mV per F The equivalent equation for the compensated voltage is Vcomp V k t 77 F Where V is the voltage of the battery at 77 F t is the temperat...

Page 3: ...of extending battery life by using temperature compensation One end of the temperature probe cable has a three pin plug which plugs into a receptacle labeled TEMP PROBE on the bottom of the charger The other end of the cable has the temperature sensor sealed in a terminal WARNING IT IS IMPORTANT TO MOUNT THE TEMPERATURE PROBE ON THE BATTERIES FOR PROPER TEMPERATURE COMPENSATION IF THIS CANNOT BE D...

Page 4: ...charger operates improperly follow the steps below a Begin by checking the voltage switches to verify their settings against the specifications of the batteries b Check the AC voltage selection switch for the proper setting 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 o...

Page 5: ...ARD 38631S 1 CONTROL CABLE W SHUNT 38056S 1 BASE ASSEMBLY 38061S 1 COVER ASSEMBLY 05322S 2 FUSEHOLDER ASSEMBLY 16268S 2 FUSE 2 5 AMP 38053S 1 CIRCUIT BREAKER ASSEMBLY 38048S 1 AC VOLTAGE SELECTOR SWITCH ASSEMBLY 27317S 1 AMMETER 04230S 5 BUSHING 29741S 1 TEMPERATURE TRANSDUCER 10 W TERMINAL 29742S 1 TEMPERATURE TRANSDUCER 30 W TERMINAL 38051S 1 HEATSINK ASSEMBLY W SCR s 38054S 1 CAP ASSEMBLY W DIO...

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