La Marche A75M Instruction Download Page 2

INSTRUCTION / TROUBLESHOOTING MANUAL FOR MODEL A75M  

PAGE 2 OF 13 

 

1.

 

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. 

2.

 

CAUTION:  To reduce risk of injury and/or damage to the batteries, use only the type of batteries specified on the 

charger nameplate. 

3.

 

Do not expose equipment to rain or snow. 

4.

 

Do not operate equipment if it has received a sharp blow, been dropped, or otherwise damaged in any way; take it to a 

qualified serviceman. 

5.

 

Do not disassemble this unit; take it to a qualified serviceman when service or repair is required.  Incorrect re-assembly 

may result in a risk of electric shock or fire. 

6.

 

To reduce risk of electric shock, disconnect this unit from the AC supply, batteries and loads before attempting any 

maintenance or cleaning.  Turning off controls will not reduce this risk. 

7.

 

WARNING

 

 RISK OF EXPLOSIVE GASES 

a.

 

Working in the vicinity of a battery is dangerous.  Some batteries generate explosive gases during normal battery operation.  For this 

reason, it is of utmost importance that each time before using this unit, you read this manual and follow the instructions 

b.

 

To reduce risk of battery explosion, follow these instructions and those published by the battery manufacturer and manufacturer of 

any equipment you intend to use in the vicinity of the battery.  Review cautionary marking on all products. 

8.

 

PERSONAL PRECAUTIONS: 

a.

 

Someone should be within range of your voice or close enough to come to your aid when you work near a battery. 

b.

 

Have plenty of fresh water and soap nearby in case the battery electrolyte contacts skin, clothing, or eyes. 

c.

 

Wear complete eye protection and clothing protection.  Avoid touching eyes while working near a battery. 

d.

 

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 get medical attention immediately. 

e.

 

Never smoke or allow a spark or flame in vicinity of a battery. 

f.

 

Be extra cautious, DO NOT drop metal onto a battery.  It might spark or short-circuit the battery or cause an explosion. 

g.

 

Remove personal metal items such as rings, bracelets, necklaces, and watches when working with a battery.  A battery can produce a 

short-circuit current high enough to weld these items causing severe burns. 

h.

 

NEVER charge a frozen battery. 

i.

 

Do not use battery charger for charging dry-cell batteries that are commonly used with home appliances.  These batteries may burst 

and cause injury to person or damage to property. 

9.

 

PREPARING TO CHARGE 

a.

 

If it is 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. 

b.

 

Be sure the area around the battery is well ventilated while the battery is being charged. 

c.

 

When cleaning battery terminals, be careful to keep corrosion from coming in contact with eyes. 

d.

 

Study all the battery manufacturer

s specific precautions such as removing or not removing cell caps while charging, recommended 

rates of charge, and maintenance procedures. 

e.

 

Follow the battery manufacturer's recharging instructions. 

10.

 

UNIT LOCATION 

a.

 

Never place this unit directly above the standard flooded battery.  Gases from the battery will corrode and damage equipment.  A 

sealed maintenance free or valve regulated lead acid (VRLA) may be placed below this equipment. 

b.

 

Never allow the battery electrolyte to drip on this unit when reading the specific gravity or filling the battery. 

c.

 

Do not operate this unit in a closed-in area or restrict ventilation in any way. 

d.

 

Do not set any battery on top of this unit. 

11.

 

DC CONNECTION PRECAUTIONS 

Connect and disconnect DC output cables only after setting all of this unit's switches to off position and removing AC input 

supply.  Do not pull on output cables when disconnecting charger from battery. 
12.

 

GROUNDING INSTRUCTIONS 

This battery charger  should be connected  to a  grounded, metal,  permanent  wiring system; or  an  equipment  grounding 

conductor should be run with circuit conductors and connected to equipment-grounding terminal or lead on battery charger.  

Connections to battery should comply with all local codes and ordinances. 

IMPORTANT SAFETY INSTRUCTIONS 

Summary of Contents for A75M

Page 1: ...L 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 847 299 306...

Page 2: ...low a spark or flame in vicinity of a battery f Be extra cautious DO NOT drop metal onto a battery It might spark or short circuit the battery or cause an explosion g Remove personal metal items such...

Page 3: ...the claim to La Marche Mfg may void warranty service for any physical damages reported for repair HANDLING WARNING Equipment can be very heavy and top heavy Use adequate manpower or equipment for hand...

Page 4: ...Charged Battery Automatic 12 hour override timer 3 Hour timing after 80 normal mode 6 Hour timing after 80 equalize mode 3 Selectable current ratings Digital Display Indicates amps volts amp hours ela...

Page 5: ...sensing is being disabled and the wrong battery could be being connected An On Off switch allows you to turn off the charger when disconnecting the battery during the charge cycle The on off switch m...

Page 6: ...unit will not start and the digital display will indicate number 0003 The charger will automatically turn off at the end of the charge cycle An on off switch is provided to de energize the charger Be...

Page 7: ...is connected to the positive battery terminal and the negative terminal is connected to the negative of the battery A grounding connection is also provided for complete protection Once properly instal...

Page 8: ...tween the AMP HOURS CHARGE TIME and COOLING TIME The COOLING TIME is the time since the charge cycle completed and is indicated in hours and minutes When showing the CHARGE TIME the AMP HOURS light wi...

Page 9: ...check output voltage and voltage across charger shunt bar If output voltage is below 2 3 Vpc the voltage across shunt must not exceed 135mV If it is over 135mV adjust pots on the S2A 320 printed circ...

Page 10: ...ective S2A 320 Drive Board 2 Shorted MOV Metal Oxide Varistor NOTE Voltage across secondary of control transformer X1 X2 120Vac Problem Complete ON but battery not charged 1 Record all readings on dig...

Page 11: ...DULES A75M 3 PHASE 1 Disconnect power transformer secondary wire from top connection of module 2 Disconnect positive bus bar from module 3 Disconnect negative bus bar from module 4 Disconnect 6 wires...

Page 12: ...t panel meters and alarms for accuracy 4th Year REPEAT ABOVE WITH THE ADDITION OF 1 Check relay contacts for pitting or corrosion 2 Check capacitors for leakage 7th Year REPEAT ALL WITH THE ADDITION O...

Page 13: ...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 field service labor rat...

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