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2.  Connect the DC output plug, if not already 

connected, by grasping the plug body and 
pushing it straight into the receptacle until it is 
fully engaged.  The BLACK wire must be 
connected to battery negative (-), and the RED 
or WHITE wire to battery positive (+).  Make 
sure all connections are clean and tight. 

3.  The charger will start after a short delay as 

indicated by the transformer hum and the 
ammeter movement. 

WARNING:  LEAD ACID BATTERIES 

GENERATE GASES WHICH CAN BE EXPLOSIVE.  
CHARGE ONLY IN WELL VENTILATED AREAS.  
DO NOT DISCONNECT CHARGER DC OUTPUT 
TERMINALS FROM BATTERY WHEN CHARGER 
IS ON.  THE RESULTING ARCING AND BURNING 
COULD CAUSE THE BATTERY TO EXPLODE.  
KEEP SPARKS, FLAME AND SMOKING 
MATERIALS AWAY FROM BATTERY. 

  If the charger must be stopped, always 

disconnect the AC cord from its outlet to 
terminate the charge. 

4.  Monitor the ammeter for correct charge rate.  

Normal charging at the finish charge rate for the 
last 3 to 5 hours is important to achieve 
equalization of all battery cells every time the 
batteries are charged.  New batteries or 
batteries charged in cold temperatures (below 
50°F) will require more time to achieve full 
charge. 

5.  Charger turns off automatically when battery is 

fully charged.  Charge time varies with battery 
size and depth of discharge.  Allow 8 hours for 
normal charging.  Severely discharged batteries 
may require up to 12 hours to be properly 
charged and equalized.  After the charger has 
turned off, disconnect the AC supply cord from 
outlet, then disconnect the DC output plug from 
the battery on portable chargers only. 

CAUTION:  DO NOT LEAVE CHARGER ON 

WHILE UNATTENDED FOR MORE THAN TWO 
CONSECUTIVE DAYS.  SEVERE OVER-
CHARGING AND POSSIBLE DAMAGE TO 
BATTERIES WILL RESULT IF CHARGER 
SHOULD FAIL TO TURN OFF.

 

 

MAINTENANCE INSTRUCTIONS 

The battery charger requires minimal maintenance.  
It should be kept clean and all connections are to be 
tightly secured.  In the event of intermittent 
operation, examine and tighten, if necessary, all 
connections.  Be sure the chassis is securely 
grounded.  If any problems cannot be resolved, 
consult a qualified service center. 

Observe the following battery cycle maintenance 
procedures to obtain good performance and 
maximum cycle life. 

1.  Always observe the following personal safety 

precautions when working with lead acid 
batteries: 

 

a.  Someone should be within range of your 

voice or close enough to come to your aid 
when you work near a battery. 

 

b.  Have plenty of fresh water and soap nearby 

in case battery acid contacts skin, clothing 
or eyes. 

 

c.  Wear complete eye protection and clothing 

protection.  Avoid touching eyes while 
working near battery. 

 

d.  If battery acid contacts skin or clothing, 

wash immediately with soap and water.  If 
acid enters eye, immediately flood eye with 
running cold water for at least ten minutes 
and get medical attention. 

 

e.  Never smoke or allow a spark or flame in the 

vicinity of batteries. 

 

f.  Be extra cautious to reduce risk of dropping 

a metal tool onto battery.  It might spark or 
short-circuit battery or other electrical part 
that may cause explosion. 

 

g.  Remove personal metal items such as rings, 

bracelets, necklaces, and watches when 
working with a lead acid battery.  A lead acid 
battery can produce a short-circuit current 
high enough to weld a ring or the like to 
metal, causing a severe burn. 

 

h.  Never charge a frozen battery. 

DANGER:  TO REDUCE RISK OF ELECTRIC 

SHOCK, ALWAYS DISCONNECT THE AC 
SUPPLY CORD FROM ITS OUTLET AND THE DC 
OUTPUT CORD FROM THE BATTERY BEFORE 
ATTEMPTING ANY MAINTENANCE (CHANGING 
FUSES, ETC.) OR CLEANING OF THE BATTERY 
CHARGER. 

2.  New batteries should be given a full charge 

before their first use because it is difficult to 
know how long batteries have been stored. 

3.  Limit use of new batteries for first five cycles.  

New batteries are not capable of their rated 
output until they have been discharged a 
number of times. 

4. Do not excessively discharge batteries. 

 

Excessive discharge can cause polarity reversal 
of individual cells resulting in complete failure 
shortly thereafter.  Limited use of new batteries 
will minimize the chance of cell reversal. 

Содержание LESTRONIC II 19740

Страница 1: ...ing charger 6 Make sure cord is located so that it will not be stepped on tripped over or otherwise subjected to damage or stress 7 An extension cord should not be used unless absolutely necessary Use of improper extension cord could result in a risk of fire and electric shock If extension cord must be used make sure a Pins on plug of extension cord are the same number size and shape as those of p...

Страница 2: ...OF ELECTRIC SHOCK This battery charger is for use on a nominal 120 volt circuit and has a grounding plug which looks like the adapter illustrated in Figure A A temporary adapter which looks like the adapter illustrated in Figures B and C may be used to connect this plug to a two pole receptacle as shown in Figure B if a properly grounded outlet is not available The temporary adapter should be used...

Страница 3: ... operation examine and tighten if necessary all connections Be sure the chassis is securely grounded If any problems cannot be resolved consult a qualified service center Observe the following battery cycle maintenance procedures to obtain good performance and maximum cycle life 1 Always observe the following personal safety precautions when working with lead acid batteries a Someone should be wit...

Страница 4: ...HZ PART NO QTY DESCRIPTION 31211S 1 CASE ASSEMBLY FOR DC W 2 10 WIRES BASE WITH LOW VOLTAGE SWITCH 26838S 1 CASE ASSEMBLY FOR DC W 2 10 WIRES 27668S 1 CASE ASSEMBLY FOR DC W 1 10 2 CORD 19745S 1 TRANSFORMER ASSEMBLY 04401S 1 CAPACITOR 4 0 MFD 660 VAC 16354S 1 HEATSINK ASSEMBLY W DIODES 08776S 1 FUSE ASSEMBLY 24800S 1 ELECTRONIC TIMER KIT 24228S 1 RELAY FOR ELECTRONIC TIMER 23385S 1 RELAY FOR ELECT...

Страница 5: ...ry to the owner will be paid for by the owner All warranty work accomplished at the Lester factory will be completed with a reasonable time after receipt of defective items This warranty does not cover any semiconductor parts such as diodes which are vulnerable to electrical overloads beyond the control of Lester Warranty on parts not manufactured by Lester which include but are not limited to tim...

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