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VII
TROUBLESHOOTING
Note: The PT-70a and PT-24-40 chargers incorporate self-contained a.c. to d.c. conver-
sion modules which utilize numerous automatic protection circuits. The a.c. input and
d.c. output fuses which protect internal wiring are housed inside the charger with these
modules. Under most circumstances these fuses will fail only if the charger has an
internal fault. Hence, they are not intended to be user-replaceable and any condition
which has caused a blown fuse will likely require repair of other internal circuitry by a
qualified technician. If an apparent charger fault cannot be corrected using any of the
recommendations in this section, the charger should be returned to the factory or place
of purchase for inspection and repair or replacement.
PROBLEM
A. Batteries not coming up to
full charge
B. Charger continues to
charge at 3 amps or more—
does not taper back
C. No charger output, even
when all connections have
been checked, a.c. is applied
to the charger, and a d.c.
load is applied to the batter-
ies
20
U.S.A. HEADQUARTERS
P.O. Box 1306, Newport Beach, CA 92663
Phone: 714-751-0488 Fax: 714-957-1621
E-Mail: sales@newmarpower.com
POSSIBLE CAUSE
1. Extremely discharged
batteries requiring long re-
charge time
2. Charger limiting its output
due to overload or over-
temperature conditions
3. Fan not operating prop-
erly, causing charger to over-
heat, reducing or ceasing
power output
1. d.c. load connected to
batteries drawing current (not
a problem condition)
2. Bad cell in one of the
batteries to which the charger
is connected
1. Blown input or output fuse
or other internal defect
E
P
P
LECTRONIC
OWER
C
! ! ! ! !
N
OMMUNICATION
AVIGATION
www.newmarpower.com
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 condition (see
section III-B, Location)
3. Check to ensure there is
no blockage at fan intake on
bottom of charger. Replace
fan if necesssary (see section
IV-G, Cooling Fan)
1. Turn off main battery
switch to d.c. electrical panel
or turn of all d.c. loads if you
wish to confirm charger will
output minimal amperage to
fully charged batteries
2. Check for shorted cell in
wet lead-acid batteries using
a hydrometer. Refer to manu-
facturer for testing mainte-
nance-free batteries
1. Return to servicing dealer
for failure analysis or contact
NEWMAR for Return Authori-
zation Number
RODUCTS
Phone:+31-35-603-2494
EURO WAREHOUSE
Fax:+31-35-603-2149
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