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La Marche Manufacturing Company | www.lamarchemfg.com
A46 Series
Constavolt
Magnetic Amplifier Charger
Installation and Operation Manual
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 40533
Instruction Drawing Number: P25-LA46-2
Tel: 847-299-1188
Fax: 847-299-3061
Revision A10
Rev. Date: 01/23
ECN: 23316
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Table of Contents
Troubleshooting
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Summary of Contents for La Marche A46 Series
- Page 1 La Marche Manufacturing Company | www.lamarchemfg.com A46 Series Constavolt Magnetic Amplifier Charger Installation and Operation Manual 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...
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Page 3: Important Safety Instructions
Important Safety Instructions Before using this equipment, read all manuals and other documents related to this charger and other equipment connected to this charger. Always have a copy of a charger’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. - Page 4 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 charger sent back for evaluation and repair.
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Page 5: Table Of Contents
Table of Contents Important Safety Instructions ........................1 Table of Contents ............................3 Table of Figures ............................4 Model Scope/General Description ........................5 Understanding the Model Number ......................... 5 Optional Accessories Included in the Charger ....................5 Equipment Handling ......................... 6 Storing the A46 .......................... -
Page 6: Table Of Figures
Table of Figures Figure 1 – Enclosure No. 1 Bolt Pattern ......................8 Figure 2 – Enclosure No. 2 Bolt Pattern ......................8 Figure 3 – Enclosure No. 3 Bolt Pattern ......................9 Figure 4 – Enclosure No. 4 Bolt Pattern ......................9 Figure 5 –... -
Page 7: Model Scope/General Description
(if any) refer to the cover page of the manual package. If the manual package that is included with the charger is no longer available, contact La Marche and provide the model or serial number of the charger to receive a list of the included accessories. -
Page 8: Equipment Handling
Equipment Handling Storing the A46 If the A46/A46F 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 -40 to 185° F (-40 to 85°... -
Page 9: Installing The A46
Installing the A46 Mounting the A46 When mounting the A46/A46F in any configuration, consider the size and weight of the charger. The wall and/or floor must be able to support the weight of the charger, as well as an additional safety factor. Refer to Appendix B to verify the weight of the charger and Table 2 below for mounting methods. -
Page 10: Wall-Mounting The A46
2.1.1 Wall-Mounting the A46 Wall-Mounting Procedure To wall-mount the A46/A46F, install bolts on the wall rated to support the charger's weight plus a safety factor of at least four times. Refer to Appendix B for charger weight specifications. Secure the charger on bolts, add appropriate mounting hardware, and tighten securely. -
Page 11: Figure 3 - Enclosure No. 3 Bolt Pattern
Case Mtg. 19" RR 18.000 19.000 18.250 4-23 23" RR ---- 23.000 22.250 Figure 3 – Enclosure No. 3 Bolt Pattern Figure 4 – Enclosure No. 4 Bolt Pattern Figure 5 – Enclosure No. 7 Bolt Pattern... -
Page 12: Floor-Mounting The A46 (3, 4 & 7 Enclosures Only)
2.1.2 Floor-Mounting the A46 (3, 4 & 7 Enclosures Only) Floor-Mounting Procedure To floor-mount the A46/A46F, install four anchor bolts into the floor. Place the charger on the anchor bolts, add appropriate mounting hardware onto the floor-mounting anchor bolts, and tighten securely. Refer to Figure 6 for hardware specifications and floor-mounting dimensions. -
Page 13: Making The Ac Input Connections
Table 3 – AC 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. -
Page 14: Configuring The Dc Output Connections
Configuring the DC Output Connections Before making any of the DC output connections, make sure you read and fully understand the DC Connection Procedure below, including Section 3.2. Select proper size for the DC wires using Table 4. If the distance between the charger’s DC output and the battery/load exceeds 10 feet, use the Power Wiring Guide in Appendix D to minimize the voltage drop across the wire distance. - Page 15 DC Connection Procedure (for chargers with DC fuse not using battery disconnect) To prevent the DC fuse from blowing when connecting the battery, connections should be done in the following order: 1. Make sure that the incoming power to the charger is turned off. OBSERVE PROPER POLARITY.
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Page 16: Charging Modes
Charging Modes The A46 charger has two modes for DC output voltage; Float mode and Equalize mode. Float charging mode is used for all normal battery charging needs. Equalize mode is used when it is necessary to equalize (or balance) the level of charge across all cells present in the battery. -
Page 17: Figure 7 - Output Adjustment
Figure 7 – Output Adjustment NOTE: When attempting to adjust the necessary voltage, loosen the screw on the appropriate slider so it may slide freely without damaging the resistor’s threads. -
Page 18: Power Failure Alarm
Power Failure Alarm A Power Failure relay is provided to disconnect the automatic control from the battery and, therefore, limit the drain on the battery. One (1) set of normally open and closed contacts from this relay is connected to terminals for connection to a remote Power Failure alarm;... -
Page 19: Frequently Asked Questions
: Every charger will have a dedicated manual cover sheet included with the charger manual, which lists all the options included. If the manual that is shipped with the charger is no longer available, call La Marche and provide the five digit accessory code at the end of the model number. -
Page 20: Service
Service All work inside the A46/A46F charger should be performed by qualified personnel. La Marche is not responsible for any damages caused by an unqualified technician. Before working inside the A46/A46F, ensure that the AC power is off at the main breaker box and that both of the charger’s breakers are off. -
Page 21: Troubleshooting Procedure
La Marche Service Technicians are available to help with troubleshooting or with scheduling charger service. When calling for a service inquiry or for troubleshooting assistance, be sure to have all of the following information on hand: 1. -
Page 22: Troubleshooting Chart
(If Applicable) Incorrect, Damaged or Loose Cable/Harness Visually inspect and verify all internal Connections wiring using charger schematic. Contact La Marche Service Department for Defective LEDs/Display Card further troubleshooting instructions. Incorrect, Damaged or Loose Cable/Harness Visually inspect and verify all internal Connections wiring using charger schematic. -
Page 23: Ordering Replacement Parts
Service Department for further troubleshooting. Ordering Replacement Parts Contact La Marche to place an order for spare or replacement parts. To order replacement parts; please provide the model and serial number of the battery charger, the part needed, and the quantity required. -
Page 24: Appendix A: A46(F) Specifications
Appendix A: A46(F) Specifications ELECTRICAL Voltage Range +/- 10% AC Input Frequency Range 60Hz ± 5% 6 - 50 ADC DC Output 12, 24, 32, or 36VDC A46 – No Filtering Output Filtering A46F – Suitable for Valve-Regulated batteries ± 0.5% from no load to full load over the specified input voltage, frequency and Regulation ambient temperature range. -
Page 25: Appendix B: A46(F) Fuse Size, Case Size, And Weight
Appendix B: A46(F) Fuse Size, Case Size, and Weight DC Output AC input Current Draw @ 100% Load A46F A46(F) Model Fuse Fuse Fuse Fuse Fuse Case Weight Case Weight Number Amps Size Size Size Size Size (Lbs) (Lbs) 6-12V 10-12V 20-12V 12.0... -
Page 26: Appendix C: A46(F) Current Draw And Heat Loss
Appendix C: A46(F) Current Draw and Heat Loss AC input Current Draw @ 100% Load A46(F) Watts Watts Watts Model BTU/Hr* Amps Lost Number 6-12V 10-12V 20-12V 30-12V 6-24V 10-24V 20-24V 10.0 30-24V 15.0 1116 1143 40-24V 20.1 11.6 10.0 1488 1042 1524... -
Page 27: Appendix D: Power Wiring Guide
Appendix D: Power Wiring 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 chargers DC output terminals and the battery at less than 1/2 volt when charger is fully loaded. -
Page 28: Appendix E: Diode Troubleshooting And Replacement
If the diode is open, the ohmmeter will show infinite resistance, indicating an open circuit with the ohmmeter leads in either direction. 4. All diodes must be checked in the event that more than one diode is defective. 5. If the diode is defective, contact La Marche for complete heat sink replacement. -
Page 29: Appendix F: Document Control And Revision History
Appendix F: Document Control and Revision History Part Number: 40533 Instruction Number: P25 -LA46-2 Issue ECN: 12036 – 6/98 23316 - 01/23 21360 – 2/17 17650 – 11/07 15349-01 – 5/02 18985 – 4/11 16842 – 7/05 14575 – 2/01 17832 –...
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