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4 Service
All work inside the A31 inverter should be performed by qualified personnel. La Marche is not responsible for any
damages caused by an unqualified technician.
Before working inside the A31, ensure the AC power is off at the main breaker box and the battery has
been removed from the inverter’s DC input terminals, either by removing the battery cables or exercising
the battery disconnect. Verify that no voltage is present by using a voltmeter at all input and output
terminals.
4.1 Performing Routine Maintenance
Although minimal maintenance is required on the A31 inverter, routine checks and adjustments are recommended
to ensure optimum system performance.
Yearly
1. Confirm air vents are open. Remove dust and debris from interior of inverter.
2. Verify all connections are tight.
3. Perform a visual inspection on all internal components.
4. Check front panel meters for accuracy and LED operation.
5. Check capacitors for electrolyte leakage and replace if necessary.
Every 7 Years
1. If the inverter is consistently operated in extreme temperature environments, the capacitors should be
replaced.
Every 10 Years
1. Check magnetics, components and wiring for signs of excessive heat.
2. Replace capacitors if not done at the 7-year interval.
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