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(Caution: Ensure a.c. input has been disconnected before proceeding)
1) Remove the two phillips head screws on the front panel (bottom right and just above
the output terminals), as well as the two phillips head screws on each side of the unit.
2) Carefully lift the main cover off of the charger base. It is not necessary to remove the
drip shield.
3) Locate the two-pin header labeled "J2" just over the cut-out on the bottom of the front-
facing charger function circuit board. Insert the mating connector and route the two
control wires through the 1/4" hole on the bottom of the charger, beside the d.c. output
fuseholder. Connect the wires to the timer.
4) Replace the charger cover. Spread it slightly when lowering it onto the base to avoid
damaging the rubber seals on either side of the internal heat sink.
V)
APPLICATION NOTES
A) Start Up
1) Before powering up your charger, check for tight electrical connections to each bat-
tery in your system. Switch off any d.c. loads on the batteries. Apply a.c. power. Observe
the d.c. ammeter on the front panel. This meter displays the total d.c. output of the
charger, through all banks. It will give some indication of the overall state of charge of
your batteries. If the meter is reading mid-scale or higher, it is an indication that the
batteries are in a relatively low state of charge. The charger, sensing this, is supplying
high current to the batteries. If the meter needle is at or near the bottom of the scale
the batteries are at or nearing full charge.
2) Apply a load to the charger by switching on some lights, a pump or some other d.c.
appliance. Observe the charger meter. It should read approximately the same as the
expected current draw of the appliance. As current is demanded from the battery sys-
tem, the charger will automatically increase its output in response to the increased load
demand. When load current exceeds 10-20 % of the charger's rated capacity, the
charger will go into the absorption mode and remain there until current drops below 5-
15 % of capacity or until the time-out circuit cycle is complete.
B) Constant Versus Occasional Use
In general, it is recommended that the charger be left connected continuously to the a.c.
distribution system so that it will be in operation whenever a.c. is available. This will
maintain batteries at peak voltage and will automatically compensate for the natural
self-discharge of the battery system. When a load is applied to the battery system the
charger's output will automatically increase to supply the current which would otherwise
draw battery voltage down. Repeatedly allowing batteries to become completely dis-
charged before recharging will greatly shorten their life. Leaving the charger on
continuously will prevent this.
1 6
P.O. Box 1306
Newport Beach,
California 92663
www.newmarpower.com
Phone: 714-751-0488
Fax: 714-957-1621
E-Mail: sales@newmarpower.com
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