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5.2
Troubleshooting Procedure
Troubleshooting should be performed only by trained service personnel or experienced electricians. Before setting
up any complicated testing or making any conclusions, inspect the charger using the guide below.
Check the following:
1. Check DC output cables, connections, battery type, and number of cells against the charger’s rating.
2. Verify charger specifications against customer order.
3. Check input connections, input voltage, and feeder breaker size.
4. Inspect for shipping damage, loose connections, broken wires, etc.
5. Certain failures can be caused by defective batteries and customer loads; make sure batteries and loads are
free from defects.
If the problem is not found with the preliminary checks above, use the troubleshooting chart on section 5.3 as a
guideline.
NOTE:
If the problem is found to be located in the printed circuit boards, the board should be replaced. No
attempt should be made to repair circuit boards in the field.
La Marche Service Technicians are available to help with troubleshooting or with scheduling charger service.
When calling 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 measured AC input voltage.
3. The measured DC output voltage with and without the battery.
4. The measured DC output current, measured with battery and load connected to charger.
NOTE:
When ordering replacement parts, drawings, or schematics, provide model number, serial number, and
description of problem, if available.
La Marche Phone Number: (847) 299-1188
24-hour
emergency
number: (847) 296-8939
