2 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 w...
3 charger location ● 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 ...
4 table of contents sc3 general description .......................................................................................................................... 5 understanding the model number .......................................................................................................
5 sc3 general description the la marche model sc3 series uses proven high frequency charging with microprocessor controlled scr technology and is developed specifically to maintain factory charger on batteries applications. The pwm control provides the highest reliability that is required for mainta...
6 1 equipment handling 1.1 storing the sc3 if sc3 is to be stored for more than a few days after delivery, it should be stored within its shipping container. The location chosen for storage should be within an ambient temperature of -40 to 185° f (-40 to 85° c) with a non-condensing relative humidit...
7 2 installation 2.1 mounting the sc3 can be wall mounted using four #4 bolts. Install the sc3 using appropriate hardware on the wall. Figure 1 - sc3 mounting dimensions.
8 2.2 electrical connections 2.2.1 input connections before beginning any work ensure that all incoming ac supply and dc load wires are de-energized. Verify that no voltage is present by using a voltmeter at all input and output terminals. Check that the source voltage and frequency match the charge...
9 3 operation all equipment is shipped from the factory fully checked and adjusted to factory default settings. Before connecting the battery check with the battery manufacturer for the correct voltage settings and adjust the configuration accordingly (refer to section 3.3). Failure to match the cha...
10 3.2.1 controls up/down (volts adj.) arrows – the up and down arrows is used for increasing or decreasing voltage setting values / timer selection / cell selection / current selection. Timer button – the “timer” button is used to “set/run” the timer (1 hr. -24hrs #8hr.) also pressed & hold for 10 ...
11 3.3 flow chart for configuration, follow the sc3 flow chart. Use the up and down buttons to cycle through the available options and the start button to run the charger. See the chart below for the adjustable settings in the calibration mode. Except timer hours the controller settings will remain ...
12 3.3.1 setting output mode press up button with increasing set volt values. Press down button with decreasing set volt values. 3.3.2 setting timer press timer button to run timer. Timer start from 1-24 hours and default value is 8 hours using up/down switch. 3.3.3 cell selection press cell selecti...
13 4 service all work inside the sc3 should be performed by a qualified electrician. La marche is not responsible for any damages caused by an unqualified technician. Before workings on sc3 charger ensure that the main breaker is at “off” position and the ac power if off. Disconnect the battery from...
14 appendix a: sc3 specifications electrical ac input voltage range: 100– 150vac frequency range: 45-65hz dc output 5a/10a @ 2.25vdc 5a/10a @ 4.50vdc 5a/10a @ 6.75vdc output filtering suitable for valve-regulated batteries regulation ± 0.5% from no load to full load over the specified input voltage,...
15 appendix b: sc3 current draw, heat loss, and case size no. Cell operation mode input voltage ac current single cell 5 a cc 120v 0.5 10 a cc 120v 1 5a c.V. Mode 120v 0.5 10a c.V. Mode 120v 1 two cell 5 a cc 120v 0.5 10 a cc 120v 1 5a c.V. Mode 120v 0.5 10a c.V. Mode 120v 1 three cell 5 a cc 120v 1...
16 appendix c: power cabling guide use the following formulas and table to determine proper wire size for minimal voltage drop. At distances exceeding 6 feet, the dc wire size should be chosen to keep the voltage difference between the units dc output terminals and the battery at less than 1/2 volt ...
17 appendix d: 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 one year from date ...
18 appendix e: document control and revision history part number: 136504 instruction number: p25-lsc3-1 issue ecn: 21497 21515 - 7/17 21497 - 6/17.
