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La Marche A75M Instruction

Mining battery charger digital volt/amp meter and electronic timer
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INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A75M
MODEL
A75M
MINING

BATTERY CHARGER

Digital Volt/Amp Meter and Electronic Timer
ECN/DATE
CPN112410
17268 / 10-06
17589 / 9-07
17076/ 2-06
106 BRADROCK DRIVE
DES PLAINES, IL. 60018-1967
(847) 299-1188
FAX: (847) 299-3061
ISSUE DATE: ECN- 17046 / 2-06
INSTRUCTION DRAWING NUMBER:
LA75M-1
P25-
PAGE 1 OF 13

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  • Page 1: Battery Charger

    INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A75M MODEL A75M MINING BATTERY CHARGER Digital Volt/Amp Meter and Electronic Timer ECN/DATE CPN112410 17268 / 10-06 17589 / 9-07 17076/ 2-06 106 BRADROCK DRIVE DES PLAINES, IL. 60018-1967 (847) 299-1188 FAX: (847) 299-3061...

  • Page 2: Important Safety Instructions

    INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A75M IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS. This manual contains important safety and operating instructions. Before using this equipment, read all instructions and cautionary markings on (1) unit, (2) battery, and (3) product using the battery.

  • Page 3: Receiving Instructions

    3. Call La Marche Mfg. For a RETURN MATERIAL AUTHORIZATION NUMBER. Failure to properly file a claim for shipping damages, or provide a copy of the claim to La Marche Mfg., may void warranty service for any physical damages reported for repair.
  • Page 4 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A75M MODEL A75M BATTERY CHARGER The Model A75M is a SCR controlled industrial battery charger for use on electric vehicle batteries. It is designed to recharge a battery of the proper amp-hour capacity in eight hours.

  • Page 5: Front Panel

    INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A75M THEORY OF OPERATION & INDICATORS FRONT PANEL The panel has a digital display, meter select/equalize (EQ) momentary switch, on/off switch and eight (8) LED lamps. The digital display indicates Output Amps, Output Voltage, Ampere Hours Returned, and Elapsed Time Charging and Cooling Time (elapsed time from end of charge).
  • Page 6 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A75M The Model A75M charger accomplishes its charge cycle completely automatically without the use of any moving parts except for the input AC contactor. It is recommended that the connector used for the battery/charger connection have an auxiliary control contact.

  • Page 7: Installation

    INSTALLATION The LaMarche Model A75M charger is designed to operate on a specific type of battery with a specified number of cells. The nameplate on the charger indicates the type and number of cells required. When connecting the DC output 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 of the battery.
  • Page 8 The display will indicate number "0005." In this condition, the lamps will not update and the unit will not turn back on until the on/off switch has been toggled. The A75M will reset back to the autostart mode when the battery is disconnected, or when the on/off switch is turned "OFF"...
  • Page 9 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A75M A75M TROUBLESHOOTING INSTRUCTIONS Before troubleshooting unit, check for shipping damage. (i.e. broken wires, loose connections, etc.) Quick-Check A75M Trouble Analysis Problem: Blown AC input fuse. 1. Check AC input voltage with tap setting on power transformer and control transformer. If AC input and tap setting agree, see step #2.
  • Page 10 1. Record all readings on digital display board before disconnecting battery. Check status of complete light. 2. Check battery for defective cells. 3. Call local La Marche Representative or factory for additional information. 4. Possible settings on the S2A-320 control board. Problem: Contactor does not pull in.
  • Page 11 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A75M Problem: Failure light on CODE 0003. 1. Check battery for correct number of cells. 2. Check for defective or shorted cells in battery. 3. Open circuit battery voltage must be above 1.6Vpc.. Problem: Failure light on CODE 0004.

  • Page 12: General Maintenance Procedure

    INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A75M General Maintenance Procedure Yearly 1. Blow out rectifier/inverter with a low-pressure air hose. 2. Make sure all connections are tight. 3. Perform a visual check on all internal components. 4. Check front panel meters and alarms for accuracy.

  • Page 13: Manufacturer's Warranty

    (5) years after date of purchase. During the last four (4) years of this five (5) year warranty period, the warranty covers parts replacement only, and no labor or other services are provided by La Marche, nor is La Marche obligated to reimburse the owner or any other person for work performed.

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