Lamarche FT Series User manual

106 Bradrock Dr. Des Plaines, IL 60018-1967
CPN 144911
Instruction Drawing Number: P25-LFT-1
Tel: [phone]
Fax: [phone]
Revision A00
Rev. Date: 05/21
ECN:22891
This manual is subject to change without notice. You may obtain the newest version of the manual at www.lamarchemfg.com
La Marche Manufacturing Company |www.lamarchemfg.com
FT Series
Pure Sine Wave Inverter
Installation and Operation Manual

i
Important Safety Instructions
Before using this equipment, read all manuals and other documents related to this inverter and other equipment
connected to this unit. Always have a copy of an inverter’s manual on file nearby, in a safe place; if a replacement
copy of a manual is needed, it can be found at www.lamarchemfg.com.
Electrical Safety
WARNING: Hazardous voltages are present at the input of power systems. The output from inverters
and 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 DC or AC input power. Check with a
meter before proceeding. Do not touch any parts that are not insulated.
•A licensed electrician should be used in the installation of any unit.
•Always disconnect the unit from the supply, batteries, and loads before performing maintenance or cleaning.
•If the unit is hot-swappable, simply remove it from the shelf for any maintenance or cleaning.
•Always assume that an electrical connection is live and check the connection relative to the ground.
•Be sure that neither liquids nor any wet material come 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 the 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 the 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 freshwater 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 could cause an explosion.

ii
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 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
Before unpacking the product, note any damage to the shipping container and take pictures. Unpack the product
and inspect the exterior and interior of the product for damage. If any damage is observed, take pictures and
contact the carrier immediately to file a damage claim. Contact La Marche for a Return Material Authorization
number to have the inverter sent back for evaluation and repair.
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
The enclosure exterior and interior are not marred or dented.
No visible damage to the components.
All hardware and connections are tight.
All wire terminations are secure.
All items on the packing list have been included.
Handling
Equipment can be very heavy with uneven distribution of weight. Use adequate manpower or equipment for
handling. Until the equipment is securely mounted, care must be used to prevent equipment from being
accidentally tipped over or dropped.

iii
Table of Contents
Important Safety Instructions ........................................................................................................................ i
Electrical Safety ........................................................................................................................................ i
Mechanical Safety ..................................................................................................................................... i
Battery Safety........................................................................................................................................... i
Unit Location ............................................................................................................................................ii
Check for Damages...................................................................................................................................ii
Returns for Service ...................................................................................................................................ii
Inspection Checklist ..................................................................................................................................ii
Handling ..................................................................................................................................................ii
Table of Contents ........................................................................................................................................iii
Model Scope/General Description.................................................................................................................. 1
Understanding the Model Number................................................................................................................. 1
Optional Accessories Included in the Inverter ................................................................................................ 1
1Equipment Handling.......................................................................................................................... 2
1.1 Storing the FT Series Inverter ........................................................................................................ 2
1.2 Moving the FT Series Inverter ........................................................................................................ 2
2Installation ....................................................................................................................................... 2
2.1 Mounting the FT Series Inverter..................................................................................................... 2
2.1.1 Wall-Mounting the FT Series Inverter ...................................................................................... 2
2.2 FT Series Inverter Overview........................................................................................................... 3
2.3 DC Input Connections.................................................................................................................... 4
2.4 AC Output/AC Input Connections ................................................................................................... 5
2.5 Alarms.......................................................................................................................................... 5
2.5.1 Alarm/Status Indicator Descriptions ........................................................................................ 5
3Operation......................................................................................................................................... 6
3.1 Front Panel LCD Display ................................................................................................................ 6
3.1.1 Controls ............................................................................................................................... 7
3.1.2 LCD Display Indicators ........................................................................................................... 7
3.1.3 Panel key/LCD Setting Detail .................................................................................................. 8
3.2 Operating Modes........................................................................................................................... 9
4Service............................................................................................................................................. 9
4.1 Performing Routine Maintenance.................................................................................................... 9
Appendix A: Technical Specifications............................................................................................................10
Appendix B: Power Cabling Guide ................................................................................................................11
Appendix C: Example Wiring Diagram ..........................................................................................................12
Appendix D: Manufacturer’s Warranty ..........................................................................................................13
Appendix E: Document Control and Revision History .....................................................................................14

1
Model Scope/General Description
The La Marche FT Series Inverter is a pure sine wave AC output, designed to adapt to various types of loads. This
DC to AC Inverter with dual CPU control provides excellent performance with automatic protection. The FT Inverter
temporarily provides up to 120% of the output for 30 seconds, providing extra power needed to start motorized
equipment. Available in 120 VAC or 230 VAC Output.
Understanding the Model Number
The FT Series model number is coded to describe the features that are included. Find the model number on the
nomenclature nameplate of the enclosure. Follow the chart below to determine the configuration of the inverter.
Optional Accessories Included in the Inverter
This inverter may have been outfitted with a number of optional accessories or option packages. To determine
the options included (if any) refer to the cover page of the manual package. If the manual package that is included
with the inverter is no longer available, contact La Marche and provide the model or serial number to receive a
list of the included accessories.
Figure 1 –FT Series Inverter Overview

2
Figure 2 –250 Enclosure Bolt Pattern
1 Equipment Handling
1.1 Storing the FT Series Inverter
If the FT Series Inverter is to be stored for more than a few days after delivery, it should be stored within its
shipping container. The location chosen for storage should be within an ambient temperature of -4 to 140°F (-20
to 60°C) with a non-condensing relative humidity of 0 to 95%. Storage should not exceed 2 years due to the
limited shelf life of the filter capacitors when they are not in service.
1.2 Moving the FT Series Inverter
After careful inspection and upon verification that the FT Series is undamaged, identify the enclosure style and
weight of the inverter. Refer to Table 1 below.
Output kW
Output
Voltage
Dimensions
(D x W x H)
Weight (lbs)
Enclosure
Size
FT Series
Inverter
1kW/2kW/3kW
120VAC
or
230VAC
19.2 x 10 x 7”
28.6/35.2/39.6
250
4kW/5kW/6kW
22 x 12 x 8”
59.5/66.1/74.9
251
8kW
25.7 x 13.3 x 10.2”
103.6
Consult Factory
Table 1 –Case and Weight
2 Installation
2.1 Mounting the FT Series Inverter
When mounting the FT Series Inverter, consider the size and weight of the inverter. The FT Series Inverter is wall
mounting system. Refer to Table 1 to verify the weight of the inverter. The location chosen for the inverter should
be within an ambient temperature range of -4˚F to 122˚F (-20˚C to 50˚C) with a non-condensing relative humidity
no higher than 95%. The inverter should be mounted in an area free of explosive materials and away from any
liquids. Avoid using equipment in a location with corrosive gases (e.g. over flooded Lead Acid batteries) and dust.
The FT Series utilizes fan-assisted cooling, so clearance of at least 12 inches of free air must be maintained in
bottom and on top for proper cooling. The preferred fastener is a machine bolt backed with a flat washer, lock
washer, and nut. All hardware should be corrosion-resistant.
2.1.1 Wall-Mounting the FT Series Inverter
To wall-mount the FT, mark and drill the points on the wall per the mounting dimensions and install (4) bolts in
the wall, rated to support the inverter’s weight plus a safety factor of at least four times. Refer to Table 1 for unit
weight specifications. Secure the inverter on bolts, add appropriate mounting hardware, and tighten securely.

3
Figure 3 –251 Enclosure Bolt Pattern
2.2 FT Series Inverter Overview
Figure 4 –FT Inverter Overview (250 Enclosure)
Figure 5 –FT Inverter Overview (251 Enclosure)
DC (+) Terminal
DC (-) Terminal
GND Terminal
DC (-) Terminal
DC (+) Terminal
GND Terminal
GND Terminal
AC Input (N) AC Input (L) AC Output (N) AC Output (L) GND Terminal
Inverter AC Output Breaker
Charger AC Input Breaker
Inverter AC
Output Breaker
Charger AC
Input Breaker
GND Terminal
AC Output (L)
AC Output (N)
AC Input (L)
AC Input (N)
GND Terminal

4
2.3 DC Input Connections
Before making any of the DC output connections, make sure you read and fully understand the DC Connection
Procedure on the following page. Select proper size for the DC wires using the table below. Refer to Appendix A
for the DC input current draws at full load capacity. This is based on an overload current of 110-115% of the
input current listed on the inverter nameplate. If the distance between the inverter’s DC input and the battery
exceeds 10 feet, use the Power Wiring Guide in Appendix B to minimize the voltage drop across the wire distance.
WARNING: Before beginning any work inside the inverter, ensure that all incoming AC/DC power is
de-energized and/or isolated. Verify that no voltage is present inside the case by using a voltmeter at
all input and output terminals. Assure the inverter that is being used is the same number and type of
cell as the inverter front nameplate specifications.
The FT inverter DC terminal bolts accept a 5/16” or M8 ring terminal stud size.
NOTE: It is recommended to use a battery disconnect breaker between inverter and battery bank; helpful during
battery or inverter maintenance. The breaker/disconnect should be sized with consideration of the full load DC
input current of the inverter. Refer to Appendix A for the DC input current draws at full load capacity.
Breaker Size/
Fuse Size (Amps)
Minimum AC/DC Wire
Size Requirement
Equipment Grounding
Conductor Minimum
25
#10
#12
30
#10
#10
40
#8
#10
50
#8
#10
60
#6
#10
70
#6
#8
80
#4
#8
90
#4
#8
100
#4
#8
125
#2
#6
150
#1
#6
175
#1/0
#6
200
#2/0
#6
250
#4/0
#4
300
250 MCM
#4
Table 2 –AC/DC & Ground Wire Size Minimum Requirements
(All wires specified in the table are rated at 90 °C or 194 °F)
NOTE: These are recommended sizes per La Marche Standards. The National Electrical Code (NEC) and Local
Wiring Codes must be followed.
DC Connection Procedure
The battery connections should be done in the following order:
1. Assure that the incoming AC mains input power to the inverter is turned off.
2. Check polarity of DC input cables and verify with multimeter.
3. Connect the positive DC input cable to the positive terminal and the negative DC input cable to the
negative terminal. OBSERVE PROPER POLARITY .

5
2.4 AC Output/AC Input Connections
A terminal strip is provided for the AC output/load, as well as for the AC input line (utility). Before beginning any
work inside the inverter, ensure that all incoming AC/DC power is de-energized and/or isolated. Verify that no
voltage is present inside the inverter by using a voltmeter at all input and output terminals.
Select wire size using the Table 2 on the previous page. Use the table below to determine the breaker size used
in the FT inverter being installed. Refer to Figures 4 and 5 for connector locations.
For the AC output, connect the AC load phase (hot) to the OUTPUT (L) terminal and the AC load neutral to the
OUTPUT (N) terminal. For the AC input, connect the AC input phase (hot) to the INPUT (L) terminal and the AC
input neutral to the INPUT (N) terminal. Connect an adequate earth ground lead (use table on previous page for
sizing) to the corresponding grounding terminal. The AC terminals accept 14 –6 AWG wire.
NOTE: Feeder breakers should be sized to match the size of the protection used in inverter. See the table below
for the inverter AC breaker sizes.
FT
Model
AC Input/Output Voltage
120VAC
208VAC
220VAC
240VAC
1K
11A
6A
6A
6A
2K
21A
12A
12A
11A
3K
32A
18A
17A
16A
4K
42A
24A
23A
21A
5K
52A
30A
29A
26A
6K
63A
36A
34A
32A
8K
84A
48A
46A
42A
Table 3 –Resettable AC Breaker Sizes
2.5 Alarms
The FT series inverter has an audible buzzer alarm which activates depending on the status of the inverter. Below
are the available alarms/status indicators:
•Load Powered by Battery: Beeps 4 times every 15 seconds
•High Battery Voltage: Beeps 4 times per second
•Low Battery Voltage: Beeps 2 times per second
•Overtemperature: Beeps 2 quick times per second
2.5.1 Alarm/Status Indicator Descriptions
LOAD POWERED BY BATTERY ALARM will trigger and the inverter will beep 4 times every 15 seconds if the
AC load is being powered by the battery. This may be an indication that the AC mains may not be available as a
supply or the AC mains may not be within range to be considered an AC supply. The alarm will clear once the
inverter shifts its source to the AC mains.
LOW BATTERY VOLTAGE ALARM will trigger and the inverter will beep 2 times per second if the DC voltage
falls below 1.67 volts per cell for longer than 5 seconds. The alarm will clear once the low battery voltage condition
is no longer present.
HIGH BATTERY VOLTAGE ALARM will trigger and the inverter will beep 4 times per second if the DC voltage
rises above 2.5 volts per cell for longer than 5 seconds. The alarm will clear once the high battery voltage condition
is no longer present.
OVERTEMPERATURE ALARM will trigger and the inverter will beep 2 quick times per second if the internal
temperature of the inverter rises above 40ºC/104ºF for longer than 5 seconds. The alarm will clear once the
overtemperature alarm condition is no longer present.

6
3 Operation
Checking the Installation
Before attempting to start up the FT Series Inverter, check and verify the following:
•Verify all connections are correct.
•Assure all terminations and contacts are tightened securely.
•Verify AC feeder breaker and battery breaker (if applicable) matches the inverter’s protection rating.
•Assure the battery/load voltage matches the DC input and AC output voltage on the inverter’s nameplate
respectively.
Start-Up Sequence
To power up the FT inverter, simply press the ON/OFF button while the screen is off. The inverter’s display should
turn on and display the output voltage.
Power Down Sequence
To power down the FT inverter, simply press the ON/OFF button while the screen is on. The inverter’s display
should turn off and the output voltage should decrease. Confirm with multimeter if attempting to service the FT.
3.1 Front Panel LCD Display
After the FT Series Inverter has completed startup, the LCD will display the Input/Output Voltage, Frequency,
Grid Mode, Inverter Mode, Battery Capacity, Load Capacity, Alarm Warning. See below for reference.
1
2
3
4
5
6
7
8
9
10
1. AC Mains Input Voltage Meter
2. AC Output Frequency Meter &
Operating Mode Indicator
3. AC Output Voltage Meter
4. AC Mains Input Status
5. AC-DC Operation Status
6. DC-AC Operation Status
7. Load Usage Percentage Indicator
8. Battery Capacity Indicator
9. Mute Status
10. Error Indicator

7
3.1.1 Controls
Button
Function
Mute / Operation Mode Menu
1 Second Press: Mute the buzzer
Long Press: Enter Operation Mode menu
Up / Charge Voltage Menu
1 Second Press: Raise current setting/value
5 second Press: Enter Charge Voltage menu
Down / Charge Current Menu
1 Second Press: Lower current setting/value
5 second Press: Enter Charge Current menu
ON/OFF
ON/OFF control
3.1.2 LCD Display Indicators
LCD Parameter Icon
LCD Display
Description
AC Mains Input Voltage Meter
AC Output Frequency Meter
AC Output Voltage Meter
Equipment Operating Mode Selection*
Grid Priority
Mode
Energy-Saving
Mode
Battery Priority
Mode
*Operating Mode can be entered by long pressing the Function button for seconds.
Battery Icon
LCD
Display
Battery Voltage Values
12VDC
24VDC
48VDC
96VDC
•Below 10.5V1
•10.5V –11.2V
•Below 21V1
•21V –22.4V
•Below 42V1
•42V –44.8V
•Below 84V1
•84V –89.6V
11.2V –11.6V
22.4V –23.2V
44.8V –45.2V
89.6V –90.4V
11.6V –12.1V
23.2V –24.2V
45.2V –48.4V
90.4V –96.8V
12.1V –12.5V
24.2V –25V
48.4V –50V
96.8V –100V
Above 12.5V
Above 25V
Above 50V
Above 100V
1Blinking
Load Usage Icon
LCD Display
Function
Output overload alarm; inverter has surpassed 100% capacity
0% to 25%
25% to 50%
50% to 75%
75% to 100%

8
Operating Mode Icon
LCD Display
Name
Function
AC Mains
AC Mains Source Availbility
AC-DC
Charger Source Availbility
DC-AC
Inverter Source Availbility
Mute
•ON: Mute Enabled
•OFF: Mute Disabled
Alarm
Error Indicator
3.1.3 Panel key/LCD Setting Detail
Button
Name
Operation Description
Mute/
Operation
Mode Menu
•Long press for 1 second: Enable Mute (1 beep)
•Long press for 1 second: Disable Mute (2 beeps)
•Long press for 5 seconds: Operation Mode Selection (Select Using / )*
Grid Priority Mode
Energy-Saving Mode
Battery Priority Mode
*Operation mode changes will take effect after restarting the inverter.
Up/Charge
Current Menu
Long press for 5 seconds: Charge Current Selection (Charger Output Current)
LCD icon will display active Charge Current (Select Using / )
C0
C1
C2
C3
C4
C5
C6
0A
5A
10A
15A
20A
25A
30A
Down/Charge
Voltage Menu
Long press for 5 seconds: Charge Voltage Selection (Charger Output Voltage)
LCD icon will display active Charge Voltage (Select Using / )
Charge Mode
Battery Type
Charge Voltage
U0
Gel U.S.A.
13.7VDC
U1
A.G.M.1
13.4VDC
U2
A.G.M.2
13.7VDC
U3
Sealed Lead Acid
13.6VDC
U4
Gel European
13.8VDC
U5
Vented Lead Acid
13.8VDC
U6
Calcium (Open)
13.6VDC
U7
Equalize Mode: 15.5V for 4 hours
ON/OFF
•ON: Long press for 2 seconds. After 1 beep, inverter will power up
•OFF: Long press for 2 seconds. After internal click, inverter will power down

9
3.2 Operating Modes
The FT series inverter has 3 operating modes which can accommodate for various priorities, whether it be
prioritizing the AC mains source, inverter source, or the low energy consumption. Below are the three available
priority modes:
Grid Prority Mode:
In Grid Priority Mode, the inverter starts with the AC mains input supply. Under normal operation, the FT will
supply power to the load and at the same time, charge the connected battery. When the AC mains input is
abnormal, the inverter will transfer the connected load to the battery.
Energy-Saving Mode:
In Energy-Saving Mode, the FT will turn on and will detect for load. When the load is greater than 5% of the
rated output, the inverter will begin to power up the load. When inverter detects no load, the output will be off
and the inverter will cycle through a load detection every 10 seconds. The load detection feature allows for lower
battery energy consumption.
Battery Priority Mode:
In Battery Priority Mode, the FT starts with AC mains supply under normal operation, but not charging connected
battery. When the battery is connected to the external charging device (like solar charging system) after adequate
power charged, inverter will automatically switch to battery mode through internal relay to supply power to the
connected load. If connected battery voltage is under acceptable range, the inverter will switch to battery mode
rightaway after power up.
4 Service
All work inside the FT inverter should be performed by qualified personnel. La Marche is not responsible for any
damages caused by an unqualified technician.
Before working inside the FT, ensure the AC power is off at the main breaker box and the battery has
been removed from the inverter’s DC input terminals, either by removing the battery cables or exercising
the battery disconnect. Verify that no voltage is present by using a voltmeter at all input and output
terminals.
4.1 Performing Routine Maintenance
Although minimal maintenance is required with La Marche inverters, routine checks and adjustments are
recommended to ensure optimum system performance.
Yearly
1. Confirm air vents are open. Remove dust and debris from interior of unit.
2. Verify all connections are tight.
3. Perform a visual inspection on all internal components.
4. Check front panel meters for accuracy and LED operation.

10
Appendix A: Technical Specifications
Model
1kW
2kW
3kW
4kW
5kW
6kW
8kW
Battery
Rated Voltage
(VDC)
12V
24V
48V
12V
24V
48V
24V
48V
24V
48V
48V
96V
48V
96V
48V
96V
Current Draw @
Full Load (ADC)
95A
47A
24A
189A
95A
47A
142A
71A
189A
95A
118A
59A
142A
71A
189A
95A
Charge Current
30A (C6-Default): C0-C6 can be set
Battery Type
U0-U7 can be set
Input
AC Voltage
Range
90-132VAC / 170-275VAC
Frequency
45-65Hz
Output
Voltage Range
110VAC/230VAC; ±5% (Inverter Mode)
Frequency
50/60Hz; ±1% (Inverter Mode)
Output Current
(230VAC Model)
4.5A
9.1A
13.6A
18.2A
22.7A
27.3A
36.3A
Output Current
(110VAC Model)
9.1A
18.2A
27.2A
36.4A
45.2A
54.6A
72.7A
Output Wave
Pure Sine Wave
Switching Time
＜10ms (Typical Load)
Efficiency
＞85% (80% Resistive Load）
Overload
110-120% (30 Seconds); ＞130% (1 Second)
Protection
Battery over/undervoltage, overload, short circuit protection, over-temperature protection, etc.
Operating Ambient
Temperature
-15℃–+50℃
Storage Ambient
Temperature
-20℃–+60℃
Operating/Storage
Ambient
0-90% (No Condensation)
Dimensions
19.2 x 10 x 7
22 x 12 x 8
Weight (lbs)
28.6
35.2
39.7
59.5
66.1
92.06
103.6

11
Appendix B: Power Cabling Guide
Use the following formulas and table to determine proper wire size for minimal voltage drop. At distances
exceeding 10 feet, the DC wire size should be chosen to keep the voltage difference between the inverter’s DC
input terminals and the battery at less than 1/2 volt when the inverter is fully loaded.
Table of Conventions:
CMA = Cross-section of wire in circular MIL area
A= Ultimate drain in amperes
LF = Conductor loop feet
MaxAmp= Maximum allowable amperes for given voltage drop
AVD = Allowable voltage drop
K = 11.1 for commercial (TW) copper wire
= 17.4 for aluminum
Calculating Wire Size Requirements:
AVD KLFA
CMA  =
Calculating Current Carrying Capacity of Wire:
KLF AVDCMA
MaxAmp 

=
Size
(AWG)
Area
CIR.MILS
Size
(MCM)
Area
CIR.MILS
18
1620
250
250000
16
2580
300
300000
14
4110
350
350000
12
6530
400
400000
10
10380
500
500000
8
16510
600
600000
6
26240
700
700000
4
41740
750
750000
3
52620
800
800000
2
66360
900
900000
1
83690
1000
1000000
0
105600
1250
1250000
00
133100
1500
1500000
000
167800
1750
1750000
0000
211600
2000
2000000
Table 2 - Wire Size/Area Table

12
Appendix C: Example Wiring Diagram
Battery Connections
12VDC Series Battery Wiring 24VDC Series Battery Wiring
48VDC Series Battery Wiring
AC Mains Input & AC Output Connections
AC Loads
Mains Supply

13
Appendix D: 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 (1) year from date of purchase under normal use.
If the equipment proves defective within a one year period, it shall be replaced without charge after examination
at our factory, providing such defect in our opinion, is due to faulty material or workmanship and not caused by
tampering, abuse, misapplication, or improper installation.
Should the equipment require major replacement or repair, the equipment must 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 to the factory, the customer or Sales representative must first obtain
an RMA (Return Material 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 warranty period.
All internal maintenance to be performed by La Marche.
La Marche reserves the right to honor the warranty with a replacement unit.
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.
All sales are final. Only standard La Marche units will be considered for return. A 25% restocking fee is charged
when return is a 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. render this warranty null and void.
La Marche Manufacturing Co. reserves the right to make revisions in the current production of equipment and
assumes no obligation to incorporate these revisions in earlier models.
The failure of La Marche Manufacturing Co. to object to provisions contained in customers' purchase orders or
other communications shall not be deemed a waiver of the terms or conditions hereof, nor acceptance of such
provisions.
The above warranty is exclusive, supersedes, and is instead of all other warranties, expressed or implied, including
any implied warranty of merchantability or fitness. No person, agent, or dealer is authorized to give any warranties
on behalf of the Manufacturer, nor to assume for the Manufacturer any other liability in connection with any of
its products unless made in writing and signed by an official of the manufacturer.

14
Appendix E: Document Control and Revision History
Part Number: 144911
Instruction Number: P25-LFT-1
Issue ECN: 22891 –05/21