Magnum Energy MMS Series - Manual (Page 42)

© 2014 Magnum Energy, Inc. 36
Maintenance and Troubleshooting
4.0 Maintenance and Troubleshooting
4.1 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-serviceable
parts, it is recommended that every 6 months you perform the follow-
ing 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 hold-down clamps.
• Clean and tighten (10 to 12 ft-lbs) all DC terminals
(battery and inverter) and connecting cables.
• Check/fi ll battery water levels (liquid lead acid batteries only).
• Check individual battery voltages (replace those that vary
more than 0.3 VDC from each other).
• Check all cable runs for signs of chafi ng – replace if necessary.
• Check the inverter’s cooling vents – clean as necessary.
4.2 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 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 shorepower (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.