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01679N 

5.  Check the level of the electrolyte in conventional 

liquid electrolyte lead acid batteries monthly.  
Maintain the proper electrolyte level by adding 
distilled or purified water when necessary. 

 

Electrolyte levels lower during discharge and 
rise during charge.  Therefore, it is mandatory 
that water be added to cells only when they are 
fully charged; do not overfill.  Old batteries 

require more frequent additions of water than 
new batteries. 

6.  Keep tops of batteries clean and dry to prevent 

excessive self-discharge. Keep battery terminals 
reasonably tight. 

 

 

WIRING DIAGRAM 

 

 

PARTS LIST FOR LESTRONIC II CHARGER, MODEL 19740, TYPE 24LC25-8ET, 120 VAC / 60 HZ 

 

PART 

NO. 

QTY. 

DESCRIPTION 

       

31211S 

CASE ASSEMBLY FOR DC W/ 2-#10 WIRES, (BASE WITH LOW VOLTAGE SWITCH) 

26838S 

CASE ASSEMBLY FOR DC W/ 2-#10 WIRES 

27668S 

CASE ASSEMBLY FOR DC W/ 1-10/2 CORD 

19745S 1  TRANSFORMER 

ASSEMBLY 

04401S 

CAPACITOR, 4.0 MFD, 660 VAC 

16354S 

HEATSINK ASSEMBLY W/ DIODES 

08776S 1  FUSE 

ASSEMBLY 

24800S 

ELECTRONIC TIMER KIT  

*24228S 

RELAY, FOR ELECTRONIC TIMER 

**23385S 

RELAY, FOR ELECTRONIC TIMER 

16369S 1  AMMETER 
31086S 

SWITCH, LOW VOLTAGE START 

(-95 OPTION ONLY) 

02028S 

BUSHING, STRAIN RELIEF AC CORD 

27512S 

BUSHING, KIT STRAIN RELIEF DC CORD 

07874S 

CORDSET, AC, 14/3, SJT, 12", MOLDED PLUG 

25743S 

CORDSET, DC, 2-#10, 45A POWERPOLE 

(-91 OPTION) 

27652S 

CORDSET, DC, 10/2, SJO, NO PLUG 

(-90 OPTION) 

30443S 

CORDSET, DC, 2-#10, SB50 RED PLUG 

(-93 OPTION) 

31051S 

CORDSET, DC, 2-#10, 3/8" RINGS 

(-95 OPTION) 

                   * FOR USE WITH CHARGERS BUILT BEFORE 47/03 
                  ** FOR USE WITH CHARGERS BUILT AFTER 47/03 

Summary of Contents for LESTRONIC II 19740

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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