P.O. Box 1306, Newport Beach, California 92663 • Phone: 714-751-0488 • Fax: 714-957-1621 • E-Mail: techservice@newmarpower.com
www.newmarpower.com
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Installing the timer requires a mating connector with dual wires
which are plugged into a jack on the internal charger function
circuit board. The connector/wire assembly is available from
NEWMAR. Request part number 873-3716-0, CFB Equalize 2 pin
assembly. Proceed with the installation as follows:
(Caution: Ensure A.C. input has been disconnected before
proceeding)
1) Remove the three screws on the front panel and seven screws
on the sides of the unit.
2) 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.
3) Locate the two-pin header labeled “J2” on the top of small
charger function circuit board which is located on the right side of
the charger. Insert the mating connector and route the two control
wires through one of the charger’s vent holes. Secure the wire as it
exits the charger using a cable clamp or wire ties.
4) Replace the charger cover.
G) Cooling Fan
To maximize the life of the internal components and to allow
continuous operation at full rating, the Phase Three employs two
integral cooling fans. The fans operate independently of each
other and will vary speed and turn on/off depending upon load
conditions and ambient temperature.
I) Output Ammeter
This meter will indicate total charging output current for all battery
banks connected.
H) Power On Indicator
This green LED will glow whenever the charger is receiving A.C.
power.
V) APPLICATION NOTES
A) Start Up
1) Before powering up your charger, check for tight electrical
connections to each battery 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 system,
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
discharged before recharging will greatly shorten their life.
Leaving the charger on continuously will prevent this.
While the output regulation of the charger will minimize battery
gassing and water loss, monthly checks of the electrolyte level
(for wet lead acid batteries) are still strongly recommended.
Some water loss is an inevitable aspect of the charging process,
and maintaining the correct electrolyte level in your batteries is
the most important thing you can do to assure their maximum
performance and long life.
C) Proper Load Sizing
The Phase Three Charger is rated for continuous duty. While
the charger cannot be damaged by overloads that exceed this
continuous rating, excessive load demands may draw battery
voltage down faster than the charger can re-supply it. If battery
voltage continues to drop and the output current is at maximum
while the charger is in service, check to see that your average
D.C. loads are not exceeding the charger’s rated output. If they
are, you may wish to consider adding another charger in parallel
to provide sufficient power for your requirements (see section III-E,
Multiple Unit Parallel Wiring.)
D) Operation With Engine
It is perfectly acceptable to allow the charger to remain on
when the engine is started and while it is running. The current
limit feature of the Phase Three Charger will protect against any
damage due to the high current demands of engine cranking.
Output diodes will prevent any back-feed of current into the
charger from the alternator while the engine runs.
As the alternator starts to charge the battery, the charger output
will decrease. When the battery voltage exceeds the rated output
voltage of the charger it will shut off and stay off as long as the
batteries are in this high state of charge. If the battery voltage
should drop below the charger’s rated output voltage it will
automatically return to service.
E) Operation as a D.C. Power Supply (stand-alone D.C.
power source) or Radar Rectifier
Most battery chargers are not suitable for powering electronic
devices directly, without a battery attached to the output, as the
high ripple and pulsing D.C. output (i.e., rectified A.C. output) can
interfere with the operation of the device. However, this charger
employs a circuit that produces an extremely well-filtered D.C.
output. Therefore it is able to power virtually any D.C. powered
device (within the unit’s rating) without the battery attached
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