Table of Contents
Advertisement
cause a rise in the internal heat sink temperature. Its
speed automatically increases/decreases in response to
load and/or ambient temperature increases/decreases.
Note: Under most circumstances, the fan will be in operation
when the charger is on.
F) Indicator LED's
There are three LED indicators on the front panel of the
EV-40 charger, reference Figure 6.
• AC OK - Green, indicates AC voltage is reaching the
charger, note this light will still illuminate if the unit's
internal AC fuse has blown
• DC OK - Green, indicates DC power being produced by
the charger
• AUX POWER OK - Green, indicates DC voltage applied to
Auxiliary output terminal block. If this light cycles on and
off, this indicates the circuit is over loaded and the internal
self resetting circuit breaker is cycling, in which case you
will need to reduce the load on the auxiliary circiuit.
See TROUBLESHOOTING Section VII, for additionals details
on the indicator light operation.
Figure 6: LED Indicators
BATT
+
AC Power Indicator
DC Output OK
Light (Green)
(Green)
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
DC loads on the batteries. Apply AC power.
2) Apply a load to the charger by switching on some lights, or
some other DC appliance. While current is demanded from
the battery system, the charger will automatically increase
its output in response to the increased load demand. When
P.O. Box 1306
Newport Beach
California 92663
AUX
-
-
+
A - B
AUX Output Indicator
Light (Green)
www.newmarEVpower.com
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.
Note: The EV-40 charger is self-limiting and will rarely
blow an input fuse. If the input fuse should blow upon
first application of power, disconnect AC power to the
charger and consult the TROUBLESHOOTING Section VII
of this manual.
If the input fuse does need replacing, be sure to replace
it with the same type and value for continue protection.
B) Constant Versus Occasional Use
In general, it is recommended that the charger be left
connected continuously to the AC distribution system
so that it will be in operation whenever AC 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 you
can do to assure their maximum performance and long life.
C) Proper Load Sizing
The Charger is rated for continuous duty (e.g., the EV-
40 can deliver up to 40 amps continuously). 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
resupply it. If the battery voltage continues to drop and
the output current is at maximum while the charger is
in service, check to see that your average DC 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.
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 Charger will protect against
any damage due to the high current demands of the
engine cranking.
E-Mail: techservice@newmarpower.com
9
Phone: 714-751-0488
Fax: 714-957-1621
Advertisement
Table of Contents
