User Manual

39
TROUBLESHOOTING & FREQUENTLY
ASKED QUESTIONS
The following is a list of common scenarios, questions and concerns regarding
system setup, battery charging and maintenance procedures. Please refer to
these as general guidelines. For further assistance with your specific system
setup, please contact your Installer.
NOTE: specific gravity readings should be taken at full charge, after the
batteries have been allowed to cool and are resting in a Float voltage
charge for 1-2 hours.
• Specific gravity readings of all cells in the battery bank indicate low state of
charge. Readings vary by cell, but not greater than .020 between the cells.
• Charging voltages may be too low and/or Absorption time may need to be
increased. Usage (load) may have increased, resulting in increased depth
of discharge (DOD) and sulfation.
1. Increase Bulk/Absorption/Boost Voltage in .2v to .4v volts increments.
2. Increase Absorption Time by 15 to 30 minutes increments as necessary.
3. Decrease DC load usage.
• Specific gravity readings are consistently higher than recommended.
(Ex 1.300, 1.300, 1.300…)
• Charging voltages may be too high and/or Absorption time should be
decreased to prevent overcharge. Usage (load) may have decreased,
reducing depth of discharge (DOD) and the time required to recharge,
causing the batteries to overcharge.
1. Decrease Bulk/Absorption/Boost Voltage in .2v to .4v volts increments.
2. Decrease Absorption Time by 15 to 30 minutes increments as necessary.
• Specific gravity readings on individual cell(s) in a battery bank with multiple
series strings vary mor than .020 (Ex 1.265, (1.265, 1.240, 1.265…)
• Indicates there may be an imbalance of charge between parallel strings of batteries.
1. Disconnect parallel strings and charge each string individually to
balance charging. For systems with more than two parallel strings
of batteries you may find this is necessary 1-2 times a year to
maintain balanced charging.
2. Increase Bulk/Absorption/Boost Voltage by .2v increments.