background image

iii 

 

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 

 
Prior to unpacking the product, note any damage to the shipping container. Unpack the product and inspect the 
exterior  of  product  for  damage.  If  any  damage  is  observed,  contact  the  carrier  immediately  and  contact  La 
Marche  for  advice  on  the  risk  due  to  any  damage  before  installing  the  product.  Verify  that  you  have  all  the 
necessary parts per your order for proper assembly. 
 

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 

  

 

Enclosure exterior is not marred or dented. 

 

 

 

 

 

 

 

There are no visibly damaged components.  

 

 

 

All hardware and connections are tight.  

 

All wire terminations are secure. 

 

All items on packing list have been included. 

 

Handling 

 
Equipment can be very heavy and/or top heavy.  Use adequate manpower or equipment for handling. Until the 
equipment  is  securely  mounted,  care  must  be  used  to  prevent  the  equipment  from  being  accidentally  tipped 
over. 

Summary of Contents for A75R

Page 1: ...truction Drawing Number P25 LA75R 3 Tel 847 299 1188 Fax 847 299 3061 Revision A01 Rev Date 11 15 ECN 21002 La Marche Manufacturing Company www lamarchemfg com A75R A75R A75R A75R SCR Battery Charger for Railroad Version V 2 Installation and Operation Manual ...

Page 2: ...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 r...

Page 3: ...the necessary parts per your order for proper assembly 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...

Page 4: ... Charger Overview 2 1 Installation 3 1 1 Mounting the A75R 3 1 2 Input Output Connections 4 1 3 Customer Connections 4 2 Operation 5 2 1 Initial Startup 5 2 2 Changing Settings 5 2 3 Adjustment Potentiometers 6 3 Status and Alarm Indicators 7 3 1 Charger Fail Alarm Operation 7 3 2 Low Current Alarm Operation 8 3 3 Remote Shutdown Operation 8 Quick Start Guide 9 General Maintenance Procedure 10 Man...

Page 5: ... amps 120 VAC 12 x 10 x 9 34 15 5 2 9 amps 240 VAC 305 x 254 x 228mm A75R 20 12V AB1 20 12 5 8 8 12 8 amps 120 VAC 12 x 10 x 9 37 16 8 4 amps 240 VAC 305 x 254 x 228mm A75R 40 12V AB1 40 12 5 8 8 12 15 amps 120 VAC 14 x 12 x 12 58 26 4 8 amps 240 VAC 356 x 305 x 305mm A75R 30 24V AB1 30 24 10 16 16 24 22 amps 120 VAC 14 x 12 x 12 76 34 5 11 amps 240 VAC 356 x 305 x 305mm A75R 60 12V A1 60 12 5 8 8...

Page 6: ...of contacts for remote annunciation The image below shows all points of customer interaction with the A75R charger 1 Input Output Power Connections Section 1 2 1A AC Input Neutral 1B AC Input Phase 1C Ground 1D Negative DC Output 1E Positive DC Output 2 AC Fuse 3 DC Breaker 4 Output DC Current 5 Output DC Volts 6 Customer Connections Signal 6A Remote Shutdown Input 12 24Vdc Bipolar Section 1 3 6B ...

Page 7: ... keyholes Attach the bolts or screws into the wall lift the A75R onto the bolts and tighten Additionally the A75R has feet so it may simply be mounted on a floor shelf or table that is appropriately sized for the chargers weight Figure 2 85 Case Figure 3 88 Case All A75R Chargers 20A and lower are built in the 85 Case All A75R Chargers 30A and larger are built in the 88 Case Heatsink Installed onl...

Page 8: ... DIP switch settings for DC output Section 2 2 Connect the DC output observe proper polarity DC negative connects to the terminal shown as 1D DC positive connects to 1E Connect the ground to the center ground terminal 1 3 Customer Connections The A75R include customer connections for Remote Charger Shutdown as well as a shared set of form C contacts for the Charger Fail and Low Current Alarms See ...

Page 9: ...display is a set of twelve DIP switches These switches are used to change settings of the charger The function of each switch is shown in the image and table below Figure 6 Configuration Switches 12V Charger Switch Battery Cells 12V Voltage Range 12V Battery Cells 24V Voltage Range 24V SW1 Disable Low Current Alarm SW2 12NC 16 68 17 88 24NC 33 3 35 7 SW3 11NC 15 29 16 39 22NC 30 5 32 7 SW4 10NC 13...

Page 10: ... Compensation will not function correctly 2 3 Adjustment Potentiometers There are two adjustment potentiometers for customer adjustment The Output Voltage Adjustment allows the customer to fine tune the output voltage Table 1 DIP Switch Settings on page 5 shows the approximate range for voltage adjustment The current limit adjustment allows the user to adjust the maximum limit for the charger outp...

Page 11: ...he Nickel Cadmium battery type is selected Lead Acid This Yellow LED indicator illuminates to indicate that the Lead Acid battery type is selected Charger Failure LC Alarm This Red LED indicator illuminates to indicate rectifier failure It will blink when low output current is present 3 1 Charger Fail Alarm Operation The Charger Fail Alarm shares the LED indicator and the alarm relay contacts with...

Page 12: ...m can be disabled by switching the SW1 DIP switch to the on position Disabling the Low Current Alarm will not affect the Charger Failure Alarm The Low Current Alarm and Charger Failure Alarm share the same set of Form C contacts The contacts will change state under either alarm condition 3 3 Remote Shutdown Operation The remote shutdown feature allows the user to check the battery without disconne...

Page 13: ...9 Quick Start Guide ...

Page 14: ... 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 OF 1 Filter capacitors should be replaced 10th Year REPEAT ALL WITH THE ADDITION OF except replacing capacitors they should be replaced every 7 years 1 Check magnetics components and wiring for signs of exces...

Page 15: ...ce arrangements 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 In no event shall La Marche Manufacturing Co have any liability for consequentia...

Page 16: ...12 Document Control and Revision History Part Number 133006 Instruction Number P25 LA75R 3 Issue ECN 20993 10 15 21002 11 15 ...

Reviews: