© 2010 Magnum Energy, Inc.
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4.0 Maintenance and Troubleshooting
4.0 Maintenance and Troubleshooting
Recommended Inverter and Battery Care
The MMS Series inverter/charger is designed to provide you with
years of trouble-free service. Even though there are no user-service-
able 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 the 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 holddown 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 cha
fi
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 rec-
ommended that you perform the following to ensure the system is
properly shut down (or properly con
fi
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.
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