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©
2013 Magnum Energy, Inc
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Maintenance and Troubleshooting
4.0 Maintenance and Troubleshooting
The following information is provided to help you keep your MSH-M Series inverter/charger in
optimum operational condition.
4.1 Recommended Inverter and Battery Care
The MSH-M 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 following maintenance steps to ensure optimum performance and extend the life of
your batteries.
WARNING:
Prior to performing any checks, switch OFF both the AC and DC circuits.
• 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 (if applicable)
• Clean and tighten all battery terminals and connecting cables [10 to 12 ft lbf (13.6 to 16.3
N-m)]
• Check
and
fi
ll battery water levels (liquid lead acid batteries only)
• Check individual battery voltages (load test those that have a voltage difference of more
than 0.3 VDC from each other)—replace if necessary
• Check all cable runs for signs of cha
fi
ng—replace if necessary
• Check the inverter’s cooling vents—clean as necessary
• Check and tighten the inverter’s internal AC terminal block connections [16 in lbf (1.8
N-m)]
4.2 Storage for Mobile Installations
When placing a RV, boat or truck into storage, it is recommended that you perform the following
to ensure the system is properly shut down (or properly con
fi
gured for storage). This is especially
important for maintaining the batteries.
• Perform the recommended maintenance steps listed in Section 4.1
• Fully charge the batteries
• Connect AC power (if available) and verify that the breaker to the inverter’s input is
switched ON (to allow battery charging)
• Verify the inverter is switched OFF
• Switch OFF all unnecessary AC and DC loads
• Disable the AGS (if installed) when the RV, boat, or truck is in a con
fi
ned storage area
WARNING:
If an automatic generator start device were to start and run the generator
for an extended period of time in a con
fi
ned area, a potentially fatal level of CO (Carbon
Monoxide) could accumulate.
