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Lester E - Series SCR - User Manual

Lester E - Series SCR
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USER’S MANUAL
Industrial Battery Charger
Important Safety,
Installation,
Operation, and
Maintenance
Instructions
*37324*
www.LesterElectrical.com
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Summary

Charger Ratings Label

Important Safety Instructions

Preserve Manual for Safety and Operation

Instructs users to preserve the manual for its vital safety and operational guidance.

Understand Safety Alert Symbol Meaning

Explains the safety alert symbol and the consequences of not following instructions.

Read Safety Instructions Before Use

Highlights critical risks of fire/shock and the need to read instructions before use.

Charge Only Lead-Acid Batteries

Warns to use only lead-acid batteries and adjust settings for other types.

Indoor Use Only: Avoid Rain Exposure

Specifies that the charger is for indoor use only and must be protected from rain.

Avoid Uninsulated Parts and Faulty Connectors

Stresses the danger of touching uninsulated parts and using faulty connectors.

General Electric Shock Hazard Warning

Alerts users to the general hazard of electric shock associated with the equipment.

Prevent Battery Gas Explosions

Warns about explosive gases from batteries and precautions against sparks and flames.

Protect Eyes, Avoid Battery Terminal Shorts

Advises eye protection and warns against shorting battery terminals with metal objects.

Ventilate for Hydrogen Gas Safety

Details the risk of hydrogen gas explosion and necessary ventilation.

Handle Sulfuric Acid Safely, First Aid

Warns about sulfuric acid burns and outlines first aid procedures for contact.

Service By Qualified Technicians Only

Restricts programming and servicing to qualified dealer technicians.

Do Not Operate Damaged Chargers

Advises against operating a damaged charger and to seek professional repair.

Do Not Disassemble Charger: Seek Technician

Prohibits charger disassembly and reiterates the need for qualified technicians.

Match Battery Specs to Charger

Stresses matching battery system specifications to the charger.

Introduction and Receiving

Disconnect Power Before Opening Charger Case

Critical safety warning to disconnect power before opening the charger case due to live components.

Battery Type and Charger Configurations

Match Battery Type to Selected Profile

Warns against using batteries that are not compatible with the selected profile, risking damage or injury.

Charger Placement and Mounting

Install Away From Flammables on Stable Surface

Warns against installing near flammable materials and specifies suitable mounting surfaces.

Fire Hazard: Avoid Flammable Vapors and Materials

Reinforces the fire hazard of chargers near flammable substances and vapors.

Replace Damaged Cords and Plugs Immediately

Mandates immediate replacement of damaged electrical cords and plugs.

Keep Charger Dry and Store Indoors

Emphasizes keeping the charger dry and stored indoors.

AC Input and Grounding

Grounding Conductor Safety: Shock Risk

Warns about the severe risk of electric shock from improper grounding and not removing the plug's prong.

Verify Grounding Before Using Adapters

Crucial safety warning regarding grounding confirmation when using an adapter.

DC Output and Fuse Information

Correct DC Polarity Connection is Crucial

Crucial instruction on correct DC polarity connection to avoid damage or malfunction.

Use Correct Replacement Fuses Only

Stresses using only correct replacement fuses and their source.

Proper Battery Care and Safety

Wear Safety Gear, Avoid Battery Terminal Shorts

Emphasizes safety gear and warns against shorting battery terminals with metal objects.

Have Assistance Ready When Working with Batteries

Recommends having assistance readily available when working with lead-acid batteries.

Keep Water and Soap Accessible for Acid Spills

Advises keeping water and soap accessible for immediate cleanup of battery acid.

Battery Acid First Aid Procedures

Provides critical first aid instructions for battery acid contact with skin or eyes.

No Smoking or Open Flames Near Batteries

Prohibits smoking or open flames near batteries due to explosion risk.

Prevent Metal Tool Dropping on Batteries

Warns against dropping metal tools on batteries, which can cause sparks or explosions.

Remove Metal Jewelry When Working with Batteries

Advises removing metal jewelry to prevent short circuits and severe burns from battery current.

Charger Operation Procedures

Electric Shock Risk: Use Grounded Outlet

Warns about electric shock risk and mandates connection to a properly grounded 3-wire outlet.

Ensure Battery Voltage Compatibility

Stresses the importance of using a compatible rechargeable deep-cycle battery with the correct voltage.

Avoid Uninsulated Parts and Ensure Connector Condition

Warns against touching uninsulated parts and ensuring connectors are in good condition.

Prevent Battery Explosions: Do Not Disconnect DC Mid-Charge

Reiteration of explosive gas risk and warning against disconnecting DC output during operation.

Eye Protection and Terminal Shorting Warning

Reminder for eye protection and avoiding metal objects near battery terminals.

Explosion Risk: Do Not Disconnect DC Mid-Cycle

Strong warning against disconnecting the DC plug during charging due to explosion risk.

User Interface and Maintenance

Critical: Disconnect Power Before Any Maintenance

Critical safety warning to disconnect all power before performing maintenance due to live components.

Maintenance Details and Troubleshooting

Ensure Tight and Clean DC Connections

Critical caution to ensure DC connections are tight and clean to prevent malfunction or fire.

Do Not Disassemble: Seek Qualified Service

Prohibits charger disassembly and directs users to qualified technicians for service.

Disconnect All Power Cords Before Service

Reinforces disconnecting all power cords before any maintenance or service to avoid shock.

Wiring Diagram Components

Lester E - Series SCR Specifications

General IconGeneral
CategoryBattery Charger
TypeSCR (Silicon Controlled Rectifier)
Output Voltage12/24/36/48V DC (depending on model)
Charging StagesBulk, Absorption, Float
Protection FeaturesReverse Polarity, Short Circuit
DimensionsVaries by model
WeightVaries by model
Input Voltage120 VAC / 230 VAC (selectable)

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