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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 the charger via the battery disconnect breaker at
"OFF" position or manually disconnecting the battery cables. Verify that no voltage is present
by using a voltmeter at all input and output terminals.
4.1
Performing Routine Maintenance
In order for the SC3 to continue to operate properly it must undergo routine maintenance.
The recommended maintenance schedule is listed below:
Yearly
1. Make sure all connections are tight. (make sure the unit is de-energized)
2. Perform a visual check on all internal components.
3. Check front panel meters and LEDs for accuracy.
4.2
Troubleshooting Procedure
Troubleshooting should be performed only by trained service personnel or experienced electricians.
Before setting up any complicated testing, give the unit a general inspection.
Check the following:
1. Check DC output cables, connections, battery type, and number of cells against the unit's rating.
2. Check unit specifications against customer order.
3. Check input connections, input voltage and breaker/fuse.
4. Check for shipping damage, loose connections, broken wires, etc.
5. Certain failures can be caused by defective batteries; make sure batteries are free from defects.
When calling in for a service inquiry or for troubleshooting assistance, be sure to have all of the
following information on hand:
1. Equipment model number and serial number.
2. The actual AC input voltage.
3. The DC output voltage with the battery.
4. Result of the check of the AC breaker and DC fuses/ breakers.
5. The actual DC output current and voltage, measured with battery and load connected to charger.
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