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INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B
MODEL
A70B
BATTERY CHARGER
ECN/DATE
CPN42675
15349-08 – 8/02
14268 – 10/00
10571 / 12-96
16816 – 6/05
14575 – 2/01
13073 / 5-99
10411 / 9-96
106 BRADROCK DRIVE
DES PLAINES, IL. 60018-1967
(847) 299-1188
FAX: (847) 299-3061
ISSUE DATE: 6/90, 1/92, and 1/95
INSTRUCTION DRAWING NUMBER:
LA70B-1
P25-
PAGE 1 OF 16
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Table of Contents
Related Manuals for Lamarche A70B
Summary of Contents for Lamarche A70B
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Page 1: Battery Charger
INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B MODEL A70B BATTERY CHARGER ECN/DATE CPN42675 15349-08 – 8/02 14268 – 10/00 10571 / 12-96 16816 – 6/05 14575 – 2/01 13073 / 5-99 10411 / 9-96 106 BRADROCK DRIVE DES PLAINES, IL. 60018-1967... -
Page 2: Personal Precautions
INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B IMPORTANT SAFETY INSTRUCTIONS FOR THE LA MARCHE POWER CONVERSION EQUIPMENT SAVE THESE INSTRUCTIONS This manual contains important safety and operating instructions for the La Marche Power Conversion Equipment. Before using this equipment, read all instructions and cautionary markings on (1) unit, (2) battery, and (3) product using the battery. -
Page 3: Preparing To Charge
INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B PREPARING TO CHARGE 1. If necessary to remove the battery connections, always remove grounded terminal from the battery first. Make sure all loads are disconnected and unit is off, so as not to cause an arc. - Page 4 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B RECEIVING INSTRUCTIONS GENERAL EQUIPMENT INFORMATION CAUTION: To ensure safe installation and operation, the information given in the instruction manual should be read and understood before installing or using the equipment. RECEIVING INSTRUCTIONS Unpacking and Inspection: Examine the shipping crate upon arrival. If there is obvious damage, describe on the receiving documents.
- Page 5 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B MODEL A70B BATTERY CHARGER The Model A70B is a microprocessor controlled industrial battery charger for use on forklift and electric vehicle batteries. It is designed to recharge a battery of the proper amp-hour capacity in eight hours.
- Page 6 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B THEORY OF OPERATION & INDICATORS FRONT PANEL The front panel consists of a printed wiring board which is connected to a microprocessor board through a keyed 26 pin ribbon cable. The panel has a digital display, select button, equalize button, on/off switch and eight (8) LED lamps.
- Page 7 PRINTED CIRCUIT BOARD OR S2A-123 OR WRONG AC VOLTAGE FROM THE CONTROL TRANSFORMER. The Model A70B charger accomplishes its charge cycle completely automatically without the use of any moving parts except for the input AC contactor. An SCR regulator controls the charge rate so that the charger puts out near maximum output current up to the gassing point of the battery, then automatically reduces the output current down to a trickle charge on a taper curve as the battery comes up to full charge.
- Page 8 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B In the normal mode, the charger will charge the battery for 3 hours after the 80% point is reached (unless the rate program terminates the charge first) or the battery is disconnected. In the equalize mode, a 6 hour timer is initiated after the 80% point is reached.
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Page 9: Installation
INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B INSTALLATION The LaMarche Model A70B 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 10 G. If the A70B has been programmed for a "start delay” other than 0 hours, the "ON CHARGE” light will flash at a one second rate and the digital display will indicate time remaining until charger cycle begins. After the "start delay”...
- Page 11 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B A70B TROUBLESHOOTING INSTRUCTIONS Before troubleshooting unit, check for shipping damage. (i.e. broken wires, loose connections, etc.) Quick-Check A70B 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 12 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B Problem: Control Transformer Fuses blown CTF2 or CTF3. 1. Defective S2A-122A Drive Board. 2. Shorted MOV. (Metal Oxide Varistor) NOTE: Voltage across secondary of control transformer: X1 - X2 = 120Vac. X3 - X4 = 11Vac.
- Page 13 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B Problem: Failure light on CODE 0004. 1. Check battery for defective or shorted cells. 2. S2A-122A "p.c." board may be defective. 3. 80% setting came on late into the charge cycle, batteries are being discharged beyond specifications.
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Page 14: General Maintenance Procedure
INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B 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 15: Manufacturer's Warranty
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 LaMarche units will be considered for return. A 25% restocking fee is charged when return is factory authorized. Special units are not returnable. - Page 16 INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A70B PAGE 16 OF 16...