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(Caution: Ensure a.c. input has been disconnected before proceeding)
1) Remove the five screws on the front panel and two screws on each side of the unit.
2) Remove the small cover plate on the lower end of the front panel. This will expose the fan
assembly which is held in place by two guides attached to the main cover.
3) Lift and slide the fan assembly completely out of the charger.
4) Remove the main cover from the charger base, taking care not to bend the two jacks on
the right side of the charger out of position. Locate the potentiometer labeled "TIMER ADJ"
on the small charger function circuit board on the right side of the charger.
3) Using a small flat tip screwdriver, turn the potentiometer clockwise to increase the
amount of time the charger remains in the absorption mode before timing out, or counter-
clockwise to decrease the amount of time. The approximate ranges are illustrated below.
FIGURE 5: Adjusting the Time-out Circuit
Note: Once the time-out circuit has put the charger into float mode, the charger will
remain in this mode. Since the Phase Three Charger is well regulated, it is able to
deliver its full rated output current in this mode and battery discharge will not occur
(provided load current does not exceed charger rating and output wiring is properly
sized).
C) Gel-Cell — Flooded/AGM Switch
According to most battery manufacturers, the ideal charge regimen for gel-cell and flooded
(wet) lead-acid or AGM (Absorbed Glass Mat) batteries differs somewhat.
The gelled electrolyte in a sealed battery may be lost or damaged by high voltage and, once
lost, cannot be replaced as it can with a wet lead acid battery. Manufacturers of gel-cells
usually recommend an ideal charge voltage which is slightly lower for a gel-cell than a lead-
acid battery. (The charge regimen recommended for AGM batteries is typically similar to that
of flooded lead-acid batteries.)
However, when the charger is in the float voltage mode over lengthier periods of time, gelled
electrolyte in a sealed battery is not susceptible to evaporation, as is the non-immobi-
12
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P.O. Box 1306, Newport Beach, CA 92663
Phone: 714-751-0488 Fax: 714-957-1621
E-Mail: sales@newmarpower.com
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www.newmarpower.com
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OWER
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