Lamarche LMES Pro User manual

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This manual is subject to change without notice. You may obtain the newest version of the manual at www.lamarchemfg.com
106 Bradrock Dr. Des Plaines, IL 60018-1967
CPN 144074
Instruction Drawing Number: P25-LLMESP-01
Tel: [phone]
Fax: [phone]
Revision A00
Rev. Date: 12/20
ECN:22774
La Marche Manufacturing Company | www.lamarchemfg.com
LMES Pro
Battery Charger
Installation and Operation Manual

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Important Safety Instructions
Before using this equipment read, all manuals and other documents related to this unit and other equipment
connected to this unit. Always have a copy of a unit's manual on file nearby, in a safe place; if a replacement
copy of a manual is needed it can be found at the www.lamarchemfg.com.
This manual offers important information and suggestions with respect to installation, use etc. Please take the
time to read this operator’s manual and become familiar with the LMES Pro Battery Charger. This will help you to
make full use of the charger.
This manual contains important safety, installation and operating instructions. The following symbols are used
throughout this manual to indicate potentially dangerous conditions or mark important safety instruction.
WARNING:Indicates a potentially dangerous condition extreme caution when performing this task.
CAUTION:Indicates a critical procedure for safe and proper operation of the controller.
NOTE: Indicates a procedure or function that is important for safe and proper operation of the
controller.
CAUTION:
The handling, installation & maintenance of the battery associated with this equipment must be
done in accordance with the instructions & safety precautions given by the battery manufacturer.
CAUTION:
Installation, maintenance & repair of the equipment should be undertaken by trained,
experienced and authorized service personnel or electrical personnel.

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Electrical Safety
Hazardous Voltages are present at the input of power systems. The output from rectifiers and from
batteries may be low in voltage, but can have a very high current capacity that may cause severe
or even fatal injury.
When working with any live battery or power system, follow these precautions:
•Never work alone on any live power system; someone should always be close enough to come to your
aid
•Remove personal metal items such as rings, bracelets, necklaces, and watches.
•Wear complete eye protection (with side shields) and clothing protection.
•Always wear gloves and use insulated hand tools.
WARNING : Lethal Voltages are present within the power system. Parts inside the unit may still
be energized even when the unit has been disconnected from the AC input power. Check with a
meter before proceeding. Do not touch any uninsulated parts.
A licensed electrician should be used in the installation of any unit.
•Always disconnect the unit from the supply and batteries before performing maintenance or cleaning.
•Always assume that an electrical connection is live and check the connection relative to ground.
•Be sure that neither liquids nor any wet material comes in contact with any internal components.
•Do not operate this unit outside the input and output ratings listed on the unit nameplate.
•Do not use this unit for any purpose not described in the operation manual.
Mechanical Safety
•This unit or parts of the unit may get very hot during normal operation; use care when working nearby.
•Do not expose equipment to rain or snow. Always install in a clean, dry location.
•Do not operate equipment if it has received a sharp blow, been dropped, or otherwise damaged in any
way.
•Do not disassemble this unit. Incorrect re-assembly may result in a risk of electric shock or fire.
Battery Safety
WARNING: Follow all of the battery manufacturer’s safety recommendations when working with
or around battery systems. DO NOT smoke or introduce a spark or open flame in the vicinity of a
battery. Some batteries generate explosive gases during normal battery operation.
•To reduce risk of arc, connect and disconnect the battery only when the unit is off.
•If it is necessary to remove the battery connections, always remove the grounded terminal from the
battery first.
•Remove personal metal items such as rings, bracelets, necklaces, and watches.
•Always wear rubber gloves, safety glasses, and a rubber lined vest/apron when working near a battery.
•Have plenty of fresh water and soap nearby in case the battery electrolyte contacts skin, clothing, or
eyes.
•If the battery electrolyte contacts skin or clothing, wash immediately with soap and water.
•If the electrolyte enters the eye, immediately flood the eye with running cold water for at least ten (10)
minutes and seek medical attention immediately.
•Do not drop metal on a battery. A spark or short-circuit could occur and lead to an explosion.

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Unit Location
•Allow at least 6 inches of free air on all vented surfaces for proper cooling
•Do not operate this unit in a closed-in area or restrict ventilation in any way.
•Do not set any battery on top of this unit.
•Never allow battery electrolyte to drip on this unit. Take care when reading the specific gravity or filling
the battery.
•Never place this unit directly above a standard flooded battery. Gases from the battery will corrode and
damage equipment.
•A sealed maintenance free or valve regulated lead acid (VRLA) battery may be placed below this
equipment.
Check for Damages
Prior to unpacking the product, note any damage to the shipping container. Unpack the product and inspect the
exterior of product for damage. If any damage is observed, contact the carrier immediately. Continue the
inspection for any internal damage. In the unlikely event of internal damage, please inform the carrier and contact
La Marche for advice on the risk due to any damage before installing the product. Verify that you have all the
necessary parts as per your order for proper assembly.
CAUTION: Failure to properly file a claim for shipping damages, or provide a copy of the claim to La
Marche, may void warranty service for any physical damages reported for repair.
Returns for Service
Save the original shipping container. If the product needs to be returned for service, it should be packaged in its
original shipping container. If the original container is damaged/unavailable, make sure the product is packed
with at least three inches of shock-absorbing material to prevent shipping damage. La Marche is not responsible
for damage caused by improper packaging of returned products.
Inspection Checklist
Enclosure exterior and interior is not marred or dented.
There are no visibly damaged components.
All hardware is tight.

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Handling
Use caution handling the unit to prevent damage
Precautions
•Do not operate this system in direct sunlight, in contact with fluids, or where there is excessive dust or
humidity.
•Allow adequate space for proper ventilation.
•Connect the charger AC Mains power cable directly to the distribution panel. Use cables according to the
size of the upstream AC protection panel device.
•This charger is not equipped with output reverse polarity protection. Please connect wire polarity correct
or use an external 15 Amp fuse when installing.

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Table of Contents
Important Safety Instructions ........................................................................................................................ i
Electrical Safety ............................................................................................................................................ii
Mechanical Safety .........................................................................................................................................ii
Battery Safety...............................................................................................................................................ii
Unit Location ............................................................................................................................................... iii
Check for Damages......................................................................................................................................iii
Returns for Service ......................................................................................................................................iii
Inspection Checklist ..................................................................................................................................... iii
Handling .....................................................................................................................................................iv
Precautions .................................................................................................................................................iv
Table of Contents ........................................................................................................................................ v
1. LMES Pro Charger Description .............................................................................................................. 1
1.1 General Description ....................................................................................................................... 1
1.2 Product Overview ......................................................................................................................... 2
1.3 Four Stage Charge Curve.............................................................................................................. 2
1.4 Features ...................................................................................................................................... 3
1.5 Remote Temperature Sensor ........................................................................................................ 3
1.6 Protections................................................................................................................................... 3
2. Indication Details................................................................................................................................ 5
3. Installation .......................................................................................................................................... 6
3.1 Where to Install ............................................................................................................................ 6
3.2 Dimensions................................................................................................................................... 6
3.3 Input AC Connection ..................................................................................................................... 7
3.4 Output DC Connection................................................................................................................... 7
4. User Configuration ............................................................................................................................... 8
4.1 System Configuration Using Dip-Switch .......................................................................................... 8
4.2 System Mode Selection.................................................................................................................. 8
4.3 Battery Cell Selection..................................................................................................................... 8
4.4 Battery Type Selection................................................................................................................... 9
5. Service................................................................................................................................................ 9
5.1 Performing Routine Maintenance.................................................................................................... 9
5.2 Troubleshooting Procedure ...........................................................................................................10
5.3 Fault Indications and Alarms.........................................................................................................10
Appendix A - LMES Pro Technical Specifications...........................................................................................12
Appendix B - Manufacturer’s Warranty ........................................................................................................14
Appendix C - Document Control and Revision History....................................................................................16

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1. LMES Pro Charger Description
1.1 General Description
The La Marche LMES Pro battery charger is an advanced battery charger, which utilizes high frequency technology.
It is specially designed to meet the requirements of charging the batteries used in engine starting applications.
This system is intended for indoor use only.
The charger is compact in form so it takes less space to install. Many functions are user selectable so that user
can choose according to their need. Although the charger is very simple to use, please take time to read this user
manual and become familiar with your charger.
Front View
Bottom View

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1.2 Product Overview
The LMES Pro battery charger is designed with 4 stage battery charging algorithms to prevent overheating and
extended battery life. The charger provides protection against battery reverse connection, high DC voltage, input
voltage variation and surges etc.
1.3 Four Stage Charge Curve
Four Stage Battery charging Algorithm:Bulk/Absorption/Float/Equalize charging stages that slowly lower
the amount of power applied to the batteries as the batteries get closer to gets fully charged. This charger allows
the batteries to be fully charged with less stress on the battery, preventing battery overheating, over gassing and
reaching maximum battery life. It can also keep batteries in a fully charged state (called “float”) indefinitely.
Bulk Charge: In this stage, the battery voltage has not yet reached up to absorption voltage and 100% of rated
current is used to recharge the battery. Charger initiates this mode when the battery voltage is less than 2.1 Volts
per cell for more than 90secs. Provides full current until the battery reaches 102% of its absorption voltage
reference.
Absorption: When the battery has recharged to the Absorption voltage level, constant-voltage regulation is used
to prevent heating and excessive battery gassing. Charger hold absorption voltage until output current is less
than 0.5Amps, or battery is determined to be fully charged (Absorption voltage reference) max. of 4 hours at this
mode and go to Float.
Float: After the battery is fully charged the Charge Controller reduces the battery voltage to a float charge which
is sometimes called a trickle charge.
Equalize (NiCad and Flooded battery type only): The Charge Controller will equalize the battery for three
hours. Equalize charging raises the battery voltage above the standard absorption voltage. This process prevents
electrolyte stratification and equalizes the individual cell voltages within the battery.
Four Stage Charge Curve

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1.4 Features
➢High Frequency-Based Charger.
➢Single Phase AC Input 105 Vac-264 Vac, 50/60Hz
➢Complete Galvanic Isolation from AC to DC
➢Soft Start, Short Circuit Protection, Over Voltage and Over Temperature Protection.
➢Four Stage Battery Charging Algorithm
➢Automatic High Battery Cutout in High DC Protection.
➢Low Noise & High Reliability.
➢Lightweight with Sleek Aesthetic Looks.
➢Generates Low EMI
➢Temperature Compensation
1.5 Remote Temperature Sensor
Battery charging voltage is temperature compensated when the temperature probe is connected to the RTS
terminal with the correct polarity.
Temp. compensation is not applicable for NiCad and Sealed type of batteries.
Default Temp. Compensation Coefficient (25'C Reference Temp.) = -3mV/cell/’C rise in Temp.
Default Temp. Compensation Range = 0'C to +50'C.
1.6 Protections
➢Transient Surge Protection
➢Temperature Compensation
In temperature compensation, the protection output is derated according to the temperature (3mV/deg
C/ Cell). It also detects open and shorted probe. When the temperature probe is not connected/open,
temperature compensation is disabled.
➢High Dc Protection
If 24V DC battery is connected to the charger when 12V mode is selected, charger will shut down in high
DC protection. No damage occurs in the charger.

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➢Output Short Circuit Protection
In output short circuit condition, 6V voltage dip occurs at output voltage during running system
and battery volt comes below 6V in 12V mode/12V in 24V mode, charger goes OFF. Charger
turn ON again after 2 mins in soft start to charge the battery.
➢Output Overload Protection
When output current exceeds the 105% of rated current, charger limits the current and output
DC voltage foldbacks to compensate the output overload condition.
➢Thermal Protection
Charger is also protected from over-temperature, i.e., at 70’C output current is derated by 30%
and recovery of derated output is at 60’C. Thermal shutdown of charger is at 85’C and recovery
is at 60’C.

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2. Indication Details
Front View
LED STATUS
INDICATION
AC ON (Green)
AC Status
ON
AC ON
OFF
AC out of range
CHG. STATUS (Orange)
Charging Status
Blink with 5 sec delay
Bulk Charging
Blink with 20 sec delay
Absorption Charging
Solid Glow
Float Charging
CHARGER FAILURE (Red)
Charger Status
ON
Charger Failure

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3. Installation
3.1 Where to Install
The charger should be installed in a location that meets the following requirements:
1. Never install the equipment near liquids or in an excessively damp environment.
2. The charger must be installed in a room with proper ventilation.
3. Avoid using equipment in location with corrosive gases (for example: Over Flooded Lead Acid batteries)
and dust.
3.2 Dimensions

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3.3 Input AC Connection
Connect AC wiring to the equipment as per the image shown below. Refer to section for recommended wire sizes.
3.4 Output DC Connection
Connect battery wires and remote temperature probe to the equipment with the correct polarity connection as
shown in below image. Connect the remote temperature sensor (RTS) probe thimble to the negative terminal of
the Battery. Refer to section for recommended wire sizes.
Configure the unit as per your requirement Battery Mode - 12V/24V and Battery Type - NiCad/Sealed/Flooded.

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CAUTION: When connecting the DC cables to the battery, be certain the positive terminal of the charger is
connected to the positive battery terminal and the negative terminal is connected to the negative battery terminal.
CAUTION: Do not touch the charger while it is in operation or just after the turn off of the system as
the Solar Charge Controller heat-sink can become very hot during operation.
4. User Configuration
4.1 System Configuration Using Dip-Switch
4.2 System Mode Selection
SWITCH 1
System Mode
0
12V Mode
1
24V Mode
4.3 Battery Cell Selection
SWITCH 3
Battery Type (No. of Cells)
0
19NC Cell for NiCad Battery
1
20NC Cell for NiCad Battery

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4.4 Battery Type Selection
SWITCH 4
Battery Type
0
Flooded Battery
1
NiCad Battery
5. Service
All work inside the LMES Pro Charger should be performed by a qualified electrician. La Marche is not responsible
for any damages caused by an unqualified technician.
CAUTION: Before working inside the LMES Pro Charger ensure that the AC power is off. Disconnect
the battery from the charger. Verify that no voltage is present by using a voltmeter at all input and
output terminals.
5.1 Performing Routine Maintenance
Although very little maintenance is required with the LMES Pro Charger, routine checks are recommended to
ensure optimum system performance.
Yearly
1. Confirm that the LMES Pro charger is located in a well-ventilated area. The charger should always be
kept free of dust and debris. Remove any that may be present.
2. Make sure all connections are tight. Make sure the unit is not too hot.
3. Make sure charger is mounted indoors only.

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5.2 Troubleshooting Procedure
Troubleshooting should be performed only by trained service personnel or experienced electricians. Before setting
up any complicated testing, give the unit a general inspection.
Check the following:
1. Check DC input-output cables, connections, battery type, and number of batteries/cells against the
unit’s rating.
2. Check unit specifications against customer order.
3. Check AC input connection and input voltage connected.
4. Measure AC voltage if power outage occurred. If the charger is in 105VAC-119VAC range, press reset
button to restart. The charger restart automatically at 120VAC after power outage.
5. Check for shipping damage, loose connections, broken wires, etc.
6. Certain failures can be caused by defective batteries; make sure batteries are free from defects.
When calling in for a service inquiry or for troubleshooting assistance, be sure to have all of the following
information on hand:
1. Equipment model number and serial number.
2. The actual AC input voltage.
3. The DC output voltage with and without the battery.
4. The actual DC output current and voltage, measured with battery connected to charger.
NOTE: When ordering replacement parts, drawings, or schematics, always give model number and serial
number
5.3 Fault Indications and Alarms
Output High DC
If 24V DC battery is connected to the LMES pro charger when 12V mode is selected, Charger shutdown in high
DC protection. No damage occurs in the Charger.
Charger Mode Selected
High DC Shutdown Voltage
High DC Recovery Voltage
12V
15.3V
14V
24V
30.6V
28V

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Output Low Dc
When 6V voltage dip occurs at output voltage during running system and battery volt comes below 6V in 12V
mode or 12V in 24V mode, charger goes OFF. Charger turn ON again after 2 mins in soft start to charge the
battery.
Output Short Circuit
When output short circuit occurs or output current reaches greater than 15A. Remove short circuit and reset the
AC power to resume normal operation.
Thermal Derating
Charger is also protected from over-temperature, i.e., at 70’C, output current derated by 30% and recovery of
derated output is at 60’C.
Thermal Shutdown
When enclosure temperature of the charger reaches 85’C, charger shutdown in thermal protection. when
temperature reduces to 60’C, charger normal operation resume.
AC Failure
When AC input goes out of the range 105 Vac - 264Vac considered AC failure.

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Appendix A -LMES Pro Technical Specifications
LMES PRO SPECIFICATION
S.
NO.
PARAMETERS
1
Model
LMESpro10 Amp
2
Input Amps Rms (Max)
3.3 Amps
3
Input Voltage Range:
105V-264 AC 50/60Hz
4
AC I/P Low Cut
100V
5
AC I/P Low Cut Recovery
120V
6
AC I/P High Cut
265V
7
AC I/P High Cut Recovery
258V
8
Battery Banks
1,2
9
Output Volts
12/24-Volt, Field Selectable
10
Charging Current
10 Amp
11
Electronic Current Limit
105%
12
Charging Modes
4 stages (Soft-Start, Bulk, Absorption, Float, Equalize)
13
Rechargeable Battery Type
VRLA(Sealed) and NiCad
14
Battery Temperature
Compensation Range
0*C to +50*C
15
Battery Temperature
Compensation Coefficient
3mV/deg C/ Cell: (with Probe Connected)
16
Enclosure Protection Type
IP32
17
Led Indication
1. AC ON (Green)
2. Charger Failure (Red)
3. Charge Status (Flashing Green for Bulk, Solid Green for Float)

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User Programmable Settings
1. Field Selectable 12/24-Volt Output
2. Flooded/NiCad Battery Selection
19
Ambient Operating Temp
-40 °C to +50 °C
20
Storage Temp Range
-40 °C to +70 °C
21
Protections
-Output Overcurrent
-Output Short Circuit
-Output Reverse Polarity
-AC Fuse (Internal)
-DC Fuse (Internal)
-Thermal Protection
22
Features
1. Cranking Function
2. System Derating
23
Battery Set Points @ 25'C
NiCad Battery
12V - 10cell / 24V -
20cell
Sealed Battery
12V/24V
Flooded Battery
12V/24V
24
Bulk Voltage
(102% Of Absorption
Voltage)
1.45V/Cell CC Mode
14.38V/28.76V
14.68V/29.37V
25
Absorption Voltage
1.44V/Cell
14.1V/28.2V
14.4V/28.8V
26
Absorption Duration
4 Hrs / Until Charge
Current Reduced to 0.5A
4 Hrs / Until Charge
Current Reduced to 0.5A
4 Hrs / Until Charge
Current Reduced to
0.5A
27
Float Voltage
1.44V/Cell
13.7V/27.4V
13.7V/27.4V
28
Equalize Voltage
1.55V/Cell
N/A
14.9V/29.8V
29
Equalize Calendar
28 Days
N/A
28 Days
30
Equalize Duration
3 Hrs.
N/A
3 Hrs.

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Appendix B - Manufacturer’s Warranty
All La Marche Manufacturing Co. equipment has been thoroughly tested and found to be in proper operating
condition upon shipment from the factory, and is warranted to be free from any defect in workmanship and
material that may develop within one year from date of purchase.
Any part or parts of the equipment (except fuses, DC connectors and other wear-related items) that prove
defective within a one (1) year period shall be replaced without charge providing such defect, in our opinion, is
due to faulty material or workmanship and not caused by tampering, abuse, misapplication or improper
installation.
Should a piece of equipment require major component replacement or repair during the first year of the warranty
period, this can be handled in one of two ways:
1. The equipment can be returned to the La Marche factory to have the inspections, parts replacements and
testing performed by factory personnel. Should it be necessary to return a piece of equipment or parts to the
factory, the customer or sales representative must obtain authorization from the factory. If upon inspection at
the factory, the defect was due to faulty material or workmanship, all repairs will be made at no cost to the
customer during the first year. Transportation charges or duties shall be borne by purchaser.
2. If the purchaser elects not to return the equipment to the factory and wishes a factory service representative
to make adjustments and/or repairs at the equipment location, La Marche's travel and field service labor rates
will apply. A purchase order to cover the labor and transportation cost is required prior to the deployment of the
service representative.
In accepting delivery of the equipment, the purchaser assumes full responsibility for proper installation, installation
adjustments and service arrangements. Should minor adjustments be required, the local La Marche sales
representative should be contacted to provide this service only.
All sales are final. Only standard La Marche units will be considered for return. A 25% restocking fee is charged
when return is factory authorized. Special units are not returnable.
In no event shall La Marche Manufacturing Co. have any liability for consequential damages, or loss, damage or
expense directly or indirectly arising from the use of the products, or any inability to use them either separately
or in combination with other equipment or materials, or from any other cause. In addition, any alterations of
equipment made by anyone other than La Marche Manufacturing Co. renders this warranty null and void.