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charger is different. It employs a circuit that produces an extremely well-filtered d.c.
output. Therefore the charger is able to power virtually any d.c. powered device
(within the unit's rating) without the battery attached in-line (if, for instance, the
battery must be removed for any purpose and a.c. is still available). All but the most
sensitive d.c. powered electronic devices will function as normally as if powered by
a battery. In addition, the current limiting circuitry enables the charger to handle the
high start-up surges associated with inductive loads, such as d.c. motors in radar
sets.
INSTALLATION NOTES
24
VI) TROUBLESHOOTING
POSSIBLE CAUSE
CONDITION
A. Batteries not coming up
1. Extremely discharged
to full charge.
batteries requiring long
recharge time.
2. Charger limiting its
output due to overload or
over temperature
conditions.
3. Fan not operating
properly, or filter clogged,
causing charger to protect
against over-heating by
reducing power output
B. Charger continues to
1. d.c load still connected
charge at 3 amps or more-
to batteries. (Not a
-does not taper back in
problem condition)
charge.
2. Bad cell in one of the
batteries to which the
charger is connected.
C. Charger does not
1. Blown input fuse.
charge.
Warning: Do Not replace the gray slotted cap of the fuseholder without a fuse
installed. It will not be retrievable. If this occurs, contact the factory.
2. Charger is not receiving
a.c. input voltage or is not
receiving correct a.c. input
voltage.
SOLUTION
1. Turn off all d.c. loads
and allow charger 24-48
hours to recharge
batteries.
2. Reduce d.c. load and/or
determine cause of over
temperature state (See
section III B, "Location")
3. Clean or replace
clogged fan filter or
replace fan if necessary
1. Turn off main battery
switch to d.c electrical
panel or turn off all d.c.
loads if you wish to
confirm charger will
output minimal amperage
to fully charged batteries.
2. Check for shorted cell
in all wet lead-acid
batteries using a
hydrometer. Replace
battery if cell is shorted.
Refer to manufacturer for
testing maintenance-free
batteries.
1. Replace fuse with
another of correct value.
Check to see if a.c input
select switch is in proper
position. Check to see if
input fuse value is correct
for input a.c voltage.
2. Using a voltmeter,
confirm a.c. input voltage,
check input connections.
Confirm a.c. input select
switch is in correct position
or correct a.c. connector/
adaptor is installed.
25
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