106 bradrock dr. Des plaines, il 60018-19671 instruction drawing number: p25-la75r-1 tel: 847 299 1188 fax: 847 299 3061 revision a05 rev. Date: 10/13 ecn: 20198 la marche manufacturing company www.Lamarchemfg.Com a75r scr battery charger for railroad installation and operation manual.
Ii important safety instructions before using this equipment read all manuals and other documents related to this unit and other equipment connected to this unit. Always have a copy of a units manual on file nearby, in a safe place; if a replacement copy of a manual is needed it can be found at the ...
Iii unit location allow at least 6 inches of free air on all vented surfaces for proper cooling allow sufficient clearance to open the front panel for servicing. 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 b...
Iv table of contents important safety instructions ........................................................................................................................ Ii electrical safety ..............................................................................................................
1 a75r general description the la marche model a75r uses proven scr charging technology and is developed specifically for the railroad market. It is typically used for signaling, highway crossing and motion detection systems where the battery is cycled frequently. This filtered unit is designed and ...
2 charger overview the a75r is simple and easy to use. It has an easy to read digital display for output voltage, and an analog meter for the output current. All settings on the a75r are done via the front panel dip switches, so there is no need to navigate through confusing set up menus. A75r also ...
3 1 installation 1.1 mounting the a75r wall mounting is available using the keyholes at the top of the enclosure. Using the drawings provided below drill two (or three) holes, appropriately sized for #10 hardware, for the keyholes. Attach the bolts (or screws) into the wall, lift the a75r onto the b...
4 1.2 input/output connections after the a75r is mounted, the input and output connections can be made. The a75r is equipped with ¼” aar style hardware for the input/output connections. The wire should be sized based on the ac and dc fuse sizes figure 4 - input/output connections using figure 4 abov...
5 2 operation 2.1 initial startup before applying ac power, be sure that the dc output dip switches are set correctly see (section 2.2). Once all connections have been made, and the output verified, the ac power may be turned on. The charger will automatically power up. There is a five second delay ...
6 sw1 is used to disable the charger’s output. If this switch is toggled to the on position (switch pushed up), the unit output will drop to zero. Sw2-sw10 are used to set the battery type and number of cells. Only one of these switches should be set to on at one time. If two switches are on at the ...
7 3 status and alarm indicators the a75r front panel has six led indicators as well as a three digit seven segment led display. Additionally there is a analog dc ammeter for the output current. Figure 7 - status and alarm indicators current limit – this red led indicator illuminates when the charger...
8 quick start guide.
9 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. 4th year repeat above with the addition of: 1. Check ...
10 manufacturer’s warranty all la marche manufacturing co. Equipment has been thoroughly tested and found to be in proper operating condition upon shipment from the factory and is warranted to be free from any defect in workmanship and material that may develop within three (3) years from date of pu...
11 document control and revision history part number: 115880 instruction number: p25-la75r-1 issue ecn: 17649 – 11/07 20198 – 10/13 20173 – 10/13 19399 – 01/12 18897 – 11/10 18017 – 10/08.
