Appendix C - Preventive Maintenance; Recommended Inverter And Battery Care; Rv/Marine Off-Season Storage - Magnum Energy MM Series Owner's Manual

Appendix C - Preventive Maintenance

Recommended Inverter and Battery Care

The MM Series inverter is designed to provide you with years of
trouble-free service. Even though there are no user-serviceable parts,
it is recommended that every 6 months you perform the following
maintenance steps to ensure optimum performance and extend the
life of your batteries.
WARNING: Prior to performing these checks, switch both
the AC and DC circuits OFF.
• Visually inspect batteries for cracks, leaks, or swelling – replace if
necessary.
• Use baking soda to clean and remove any electrolyte spills or
buildups.
• Check and tighten all battery hold down clamps.
• Clean and tighten (10 to 12 foot-pounds) all DC terminals (battery
and inverter) and connecting cables.
• Check and fi ll battery water levels (Liquid Lead Acid batteries
only).
• Check individual battery voltages (replace those that vary more
than 0.3 VDC of each other).
• Check all cable runs for signs of chafi ng – replace if necessary.
• Check the inverter's cooling vents – clean as necessary.

RV/Marine Off-Season Storage

When placing your coach or boat into seasonal storage, it is recom-
mended that you perform the following to ensure the system is prop-
erly shut down (or properly confi gured for seasonal storage). This is
especially important for maintaining the batteries.
• Perform the recommended maintenance steps noted above.
• Fully charge the batteries.
• Connect shore power (if available) and verify that the breaker to
the battery charger is switched ON.
• Verify the inverter is switched OFF.
• Switch OFF all unnecessary AC and DC loads.
© 2010 Magnum Energy, Inc.
Appendix C - Preventive Maintenance
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