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Operating Instructions

1

01056G

24 VOLT DUAL MODE

WHEELCHAIR BATTERY CHARGER

MODEL 13820

TYPE 24EL8

Specifications

AC Supply:

120 volts, 60 Hertz, single-phase, 4 amps maximum

DC Output:

24 volts, 8 amps, tapering to 3 amps or less

Battery Capacity:

Two series connected 6 cell, 12 volt deep-cycle motive power batteries.  Gel cell and
sealed or conventional replaceable electrolyte deep-cycle batteries

Battery Size

Normal Recharge Time

28 to 55 amp hours

8 hours

56 to 85 amp hours

12 hours

PLEASE SAVE THESE IMPORTANT SAFETY AND OPERATING INSTRUCTIONS

For correct operation of the equipment, it is important to read and be familiar

with this entire manual before installing and operating the charger.

DO NOT DISCARD THIS MANUAL AFTER READING.

LOOK FOR THIS SYMBOL TO POINT OUT SAFETY PRECAUTIONS.  IT MEANS:

BECOME ALERT—YOUR SAFETY IS INVOLVED.  

IF YOU DO NOT FOLLOW THESE

SAFETY INSTRUCTIONS, INJURY OR PROPERTY DAMAGE CAN OCCUR.

Features

Charger output characteristics are adjustable to charge gel cell and sealed or conventional replaceable liquid electrolyte
deep-cycle lead-acid batteries.  Different charge characteristics are selected by a switch on the front of the charger.

Patented electronic circuit monitors battery state of charge and automatically turns charger off when the batteries reach full
charge.

Line voltage compensation produces consistent charger output for AC supply voltage variations of + 10% from nominal.

Convection cooled design for maximum reliability and minimum maintenance.

IMPORTANT SAFETY INSTRUCTIONS

Before using battery charger, read all instructions
and cautionary markings on the battery charger,
battery, and  wheelchair.  Use of an attachment not
recommended or sold by battery charger
manufacturer may result in a risk of fire, electric
shock, or injury to persons.

INTRODUCTION

The Dual-Mode wheelchair battery charger is
designed to recharge deep-cycle batteries of
conventional replaceable electrolyte or gel cell and
sealed design.  The different charge characteristics
required by these different types of battery design
are selected by sliding the BATTERY TYPE selector

Summary of Contents for 13820 24EL8

Page 1: ...racteristics are adjustable to charge gel cell and sealed or conventional replaceable liquid electrolyte deep cycle lead acid batteries Different charge characteristics are selected by a switch on the front of the charger Patented electronic circuit monitors battery state of charge and automatically turns charger off when the batteries reach full charge Line voltage compensation produces consisten...

Page 2: ...n cooled design requires an unobstructed flow of cooling air for proper operation Keep all charger ventilation openings at least two inches 2 5 08cm away from walls and other objects Do not allow clothing blankets or other material to cover charger DO NOT place under bed WARNING CHARGERS CAN IGNITE FLAMMABLE MATERIALS AND VAPORS DO NOT USE NEAR FUELS GRAIN DUST SOLVENTS THINNERS OR OTHER FLAMMABLE...

Page 3: ... cord is disconnected CAUTION MAKE SURE THE BATTERY PACK IS A 24 VOLT 12 CELL SERIES CONNECTED 28 85 AMP HOUR 20 HR RATE RECHARGEABLE DEEP CYCLE BATTERY SYSTEM THE GEL CELL AND SEALED DEEP CYCLE BATTERY SETTING CHARGES TO A MAXIMUM ON CHARGE VOLTAGE OF 2 37 VOLTS PER CELL THE REPLACEABLE ELECTROLYTE DEEP CYCLE BATTERY SETTING HAS AN ON CHARGE VOLTAGE OF AT LEAST 2 50 VOLTS PER CELL VISUALLY CHECK ...

Page 4: ...es are as charged as they are capable of being and turn off When the batteries will no longer perform as desired they should be replaced Charger is equipped with a temperature sensor which automatically turns charger off if it overheats Should charger turn off before the batteries are fully charged check to be sure all ventilation openings are free from obstructions After charger cools down to a s...

Page 5: ...ent excessive self discharge Keep battery terminals reasonably tight PERSONAL PRECAUTIONS 1 Someone should be within range of your voice or close enough to come to your aid when you work near a lead acid battery 2 Have plenty of fresh water and soap nearby in case battery acid contacts skin clothing or eyes 3 Wear complete eye protection and clothing protection Avoid touching eyes while working ne...

Page 6: ...d to take place it may be partially reduced by returning temporarily to daily charging The decrease in wheelchair range where the chair loses power earlier and earlier in the day indicates one of the following a The electrolyte level in conventional liquid electrolyte lead acid batteries was allowed to drop below the top of the battery plates Add distilled water to just cover the tops of the plate...

Page 7: ...1 CASE ASSEMBLY 16246S 1 TRANSFORMER ASSEMBLY 12245S 1 ELECTRONIC TIMER ASSEMBLY 13811S 1 AMMETER 10 AMP 14308S 1 CONTROL CABLE ASSEMBLY 15184S 1 SWITCH SLIDE SPST 125 VAC 6 AMP 14341S 1 THYRISTOR ASSEMBLY 04275S 2 BUSHING INSULATOR 6N3 4 FOR CORDSETS 14444S 1 CORDSET AC 18 3 102 14421S 1 CORDSET DC 14 2 108 BLACK RED POWERPOLE 14422S 1 CORDSET DC 14 2 108 YELLOW WHITE POWERPOLE 14538S 1 CORDSET D...

Page 8: ... 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 timers and ammeters is limited to the period specified in the original manufacturer s warranty This warranty ...

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