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Appendix C – Preventive Maintenance
C-1
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 to extend the life of your batteries.
WARNING: Prior to performing these checks, switch both the AC
and DC circuits off.
•
Visually inspect your 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.
C-2
RV/Marine Off-Season Storage
When placing a coach/boat into seasonal storage, 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.
C-3
Resetting the Inverter
Under some fault conditions (e.g., an internal fault), the inverter will need to
be reset. Prior to performing any reset, ensure all AC power (utility, generator,
shorepower) is removed from the inverter's input.
CAUTION: If AC is connected while performing an inverter reset,
damage may occur.
C-3.1
Performing an Inverter Reset (i.e., soft reset)
To perform an inverter reset (also known as a "soft reset"):
1.
Press and hold the Power ON/OFF switch (see Figure C-1) for approximately
fi fteen (15) seconds until the Inverter Status Indicator LED comes on
and fl ashes rapidly.
2.
Once the rapid fl ashing has begun, release the Power ON/OFF switch.
The Status LED will go off after the pushbutton is released.
3.
After the inverter reset is completed, press the Power ON/OFF switch to
turn the inverter on.
© 2016 Sensata Technologies
Appendix C – Preventative Maintenance
32
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