Operation
©
2017 Sensata Technologies
Page 61
FAULT
PWR
CHG
INV
Float Charging
Settings/Info...
Float Charging
appears on LCD. PWR (green) LED
is on solid. CHG (green) LED is typically on solid, but
may blink. FAULT (red) LED is off, and INV (green)
LED could be on or off.
• Float Charging (Float)
– In Float Charging mode, the charger reduces the charge voltage
and tries to maintain the batteries at the
fl
oat charge voltage setting. This is determined by the
SETUP menu’s
03C Battery Type
setting as shown in Table 3-1.
Info:
If the battery voltage falls
≤
12.1 VDC (12-volt models),
≤
24.2 VDC (24-volt
models) or
≤
48.4 VDC (48-volt models); the unit initiates bulk charging.
Figure 5-17, Float Charging Mode
• Full Charge (Full Chg)
– This status indicates the charger is in Battery Saver™ mode.
This mode maintains the batteries without overcharging, and prevents excessive loss of water
in
fl
ooded batteries, or drying out of GEL/AGM batteries. After four hours of Float charging, the
charger turns off and displays
“Full Charge”
(charger in Battery Saver™ mode). If the battery
voltage drops to
≤
12.6 (12v models),
≤
25.2 (24v models) or
≤
50.4 (48v models), the charger
automatically initiates another four hours of Float charging. This cycle helps to ensure the batteries
are maintained and continues as long as AC power is continuously connected to the AC input.
“
Full Charge
” only displays if
Multi-Stage
is selected from the
03F Final Charge Stage
menu.
FAULT
PWR
CHG
INV
Full Charge
Settings/Info...
Full Charge
appears on LCD. PWR (green) LED is on
solid. CHG (green) LED blinks. FAULT (red) LED is off,
and INV (green) LED could be on or off.
Figure 5-18, Full Charge Mode
CAUTION:
During Equalizing mode, the batteries begin gassing and bubbling
vigorously—which consumes water. Ensure each cell has adequate distilled water levels
prior to equalizing, and add water as needed after equalizing.
CAUTION:
Ensure your batteries can be equalized. Only do so if permitted by your
battery manufacturer or dealer. Performing an Equalize charge on batteries other than
liquid lead acid or certain AGM types could permanently damage them. Contact your
battery manufacturer for their recommendations.
CAUTION:
Ensure the DC loads are not be damaged by the higher voltage applied to
the batteries during the Equalize charge. If in doubt, disconnect the loads to prevent.
Info:
Even though equalization charging can be enabled if the GEL or AGM2 battery
type is selected (under the SETUP menu’s
03C Battery Type
setting) The voltage does
not increase above the absorption voltage level, which effectively does not allow an
equalization charge for these two battery types.
How often should I equalize?
Some experts recommend that heavily used batteries should
be equalized periodically, ranging anywhere from once a month to once or twice per year. Other
experts only recommend equalizing when the cells have a low speci
fi
c gravity, or when the
difference between any individual cell has a speci
fi
c gravity reading greater than .015 after being
fully charged. Contact your battery manufacturer for their recommendations.
How long should I equalize?
While the batteries are gassing, monitor the speci
fi
c gravity
readings every hour. When the speci
fi
c gravity readings no longer increase, the Equalization
charge is complete and should be stopped.
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