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3.2
Performing Routine Maintenance
Although very little maintenance is required with the LMESpro Charger, routine checks are recommended to
ensure optimum system performance.
Yearly
1. The charger should always be kept free of dust and debris. Remove any accumulation that may be
present, particularly in the heat-sink fins near the wall.
2. Make sure all connections are tight.
2.1.
Remove AC input power to the charger, and open the DC circuit at the battery/HCAP to remove all
power sources to the LMESpro.
2.2.
Tug on the individual input wires, none should pull out of the connector.
3.3
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 batteries/cells against the unit's
rating.
2. Check unit specifications against customer order.
3. Check AC input connection and verify the AC supply measures within the specified range.
4. Measure AC voltage if power outage occurred.
5. Check for shipping damage, loose connections, broken wires, etc.
6. Certain failures can be caused by defective batteries; make sure batteries are free from defects.
7. If the red Fault LED is illuminated, try using the Reset button, see section 2.7.
8. If the fault still persists after using the Reset button, fully de-energize the AC & DC circuits, remove 1
conductor from the battery/HCAP, verify with a meter that all circuits are de-energized, then check AC
& DC fuses. See Section 3.1 & Figure-13.
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 and without the battery/HCAP.
4. The actual DC output current and voltage, measured with battery/HCAP connected to charger.
NOTE: When ordering replacement parts, drawings, or schematics, always give model number and serial number
13
.
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