Charge Period; Troubleshooting - Schumacher SF-2151MA Owner's Manual

CHARGE PERIOD

G
The approximate time required to bring a battery to a full charge
state depends upon the number of ampere hours (AH's) de-
pleted from the battery. AH's are determined by multiplying the
number of hours times the number of amps supplied by a
battery to a load. For example - if a load was connected to a
battery which drew 10 Amps for a period of 5 hours, the battery
will have supplied 50 AH's. The approximate recharge time
required to restore the 50 AH's depleted from the battery would
be calculated by dividing 50 AH's by the selected charge rate. If
the 15 Amp charge rate is chosen then divide 50 AH's by 15
Amps, this equal to 3.3 hours or 3 hour and 20 minutes. During
the charge cycle, the 15 Amp charge rate will not remain con-
stant, rather as the battery charges it will taper to approximately
6-7 Amps. Also not all of the energy going into the battery is
directly converted, some is lost in the form of heat. For these
reasons allow an additional 25% in charge time. For this ex-
ample add 50 minutes to the 3 hour and 20 minutes for a total
recharge time of 4 hour and 10 minutes.
50 = 3 Hours 20 Minutes
15
3 Hours (180 minutes + 20 minutes = 200 minutes)
200 x 1.25 = 250 minutes or 4 Hours & 10 minutes
SCHUMACHER ELECTRIC CORPORATION, 801 BUSINESS CENTER DRIVE, MOUNT
PROSPECT, ILLINOIS 60056-2179 MAKES THIS LIMITED WARRANTY TO THE ORIGINAL PUR-
CHASER AT RETAIL OF THIS PRODUCT. THIS LIMITED WARRANTY IS NOT TRANSFERABLE.
Schumacher Electric Corporation warrants this battery charger for two years from date of pur-
chase at retail against defective material or workmanship. If such should occur, the unit will be repaired
or replaced at the option of the manufacturer. It is the obligation of the purchaser to forward the unit together
with proof of purchase, transportation and/or mailing charges prepaid to the manufacturer or its autho-
rized representative.
This limited warranty is void if the product is misused, subjected to careless handling, or repaired
by anyone other than the manufacturer or its authorized representative.
The manufacturer makes no warranty other than this limited warranty and expressly excludes any
implied warranty including any warranty for consequential damages.

TROUBLESHOOTING

If a problem does occur, check the following:
PROBLEM
No meter reading.
Charger will not turn
on when properly
connected.
Clicking noise from
charger.
LIMITED WARRANTY
THIS IS THE ONLY EXPRESS LIMITED WARRANTY AND THE MANUFACTURER NEI-
THER ASSUMES NOR AUTHORIZES ANYONE TO ASSUME OR MAKE ANY OTHER OBLIGA-
TION TOWARDS THE PRODUCT OTHER THAN THIS EXPRESS LIMITED WARRANTY. THE
MANUFACTURER MAKES NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR PUR-
POSE OF THIS PRODUCT AND EXPRESSLY EXCLUDES SUCH FROM THIS LIMITED WAR-
RANTY.
SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES OR LENGTH OF IMPLIED WARRANTY SO THE ABOVE LIMITA-
TIONS OR EXCLUSIONS MAY NOT APPLY TO YOU.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE
OTHER RIGHTS WHICH VARY FROM STATE TO STATE.
5
POSSIBLE CAUSE SOLUTION
Clips are not making Rock clips back and
a good connection forth for a better connection.
AC Cord unplugged. Plug AC line into outlet.
Meter should now indicate.
AC outlet is dead. Plug in a lamp to check for
voltage.
Poor electrical Check connectors, rock
connection. back and forth for a better
connection.
Circuit breaker is May be in the wrong switch
cycling. position.
Battery is defective. Have Battery checked.
Severely discharged Allow charging to continue
battery but otherwise until battery has a chance
a good battery. to recover sufficiently to take
a charge. If more than 20
min. stop charging and have
the battery checked.
Reverse connections Shut off charger and correct
at battery. lead connections.
257-800