Schumacher SF-200-30 - Manuel (Page 5)

5
CHARGE RATE*/CHARGING TIME - HOURS**
2 AMP 10 AMP 30 AMP 40 AMP 60 AMP
Motorcycle, Garden 6 - 12 AH 3-6
Tractor, etc. 12 - 32 AH 3 - 18
200 - 315 CCA 40 - 60 RC 13 - 20 2 ½ - 4 ½ - 1 ½ - ¾ NR
315 - 550 CCA 60 - 85 RC 20 - 35 4 - 7 1 - 2 ¾ - 2 ½ - 1
550 - 875 CCA 85 - 125 RC 35 - 55 7 - 11 2 - 7 2 - 3 1 - 2
55 MC 3 4 7 NR NR NR
80 MC 50 10 NR NR NR
105 MC 6 6 13 NR NR NR
J. CHARGE PERIOD
Determine the charge level of your battery with a hydrometer or electronic percent of charge tester. Determine the ampere hour rating of your battery. It
may be on the battery information label. If the battery is rated in Reserve Capacity, convert to ampere hour rating using the following formula:
Ampere Hour rating = (Reserve Capacity) + 16 Example: AH rating = (168 Reserve Capacity) + 16 or AH = 100
(2) (2)
Reserve Capacity is in minutes.
Use the following formula to determine the time of charge required: (AH x % of charge needed) divided by amp setting of the charger, times
1.25 = hours of charge:
Example: State of charge of the battery is 50%
Percent of charge needed is 100% - 50% = 50% (.50 decimal)
Ampere rating of the battery is 100AH
Charger setting is
10 amps
100 x .50 = x 1.25 = 6.25 hours of charge needed
10 + 1.00 hour more if charging a deep cycle battery
7.25 hours total for a deep cycle battery.
A hydrometer reading of the specific gravity of the electrolyte (fluid) of the battery in good condition should be between 1.25 and 1.28.
When a battery reaches 80-85% of full charge, bubbles will appear on the surface of the fluid. As the battery nears full charge, bubbling will become
more vigorous.
I. ENGINE START
*Charge Rates for this model are listed on the
front panel.
**Based on battery at 50% charge.
AH Ampere Hours
NR Not Recommended
CCA Cold Cranking Amps
RC
Reserve Capacity
MC Marine Capacity
SMALL
BATTERIES
CAR/TRUCKS
MARINE/
DEEP CYCLE
BATTERY SIZE/RATING
NR NR NR NR
1. With the charger unplugged from the AC outlet, connect the
charger to the battery following instructions given in section
F.
2. Plug the charger AC power cord into the AC outlet, then set
selector switch to the 12 volt Engine Start position.
3. Crank the engine by turning the ignition key of the vehicle.
Follow the duty cycle printed on the front panel of your charger
for proper ON / OFF times. During extremely cold weather or
when the battery is severely exhausted, charge the battery
for about 5 minutes before cranking the engine.
4. If the engine fails to start, charge the battery for 5 more min-
utes before attempting to crank the engine again.
5. After the engine starts, move the charge rate switch to the off
position and then unplug the AC power cord from the outlet
before disconnecting the output clips from the battery.
K. BATTERY CHARGING
1. Before charging any battery, make sure the electrolyte (bat-
tery liquid) in each cell is at correct level.
2. Set all switches and timers to the OFF position.
3. If the battery is being charged inside the vehicle, use con-
nection procedures outlined in Section F. Should the battery
be removed from the vehicle, follow the instruction in Sec-
tion G. Now plug the charger into the AC outlet.
4. Set the charge rate switch to the desired charge position.
See charge rate chart.
NOTE: These battery chargers are MANUAL type chargers
and MUST have the charging monitored regularly. The
battery can overcharge if the charging is not stopped
when the battery is charged.
Do not try to engine start a vehicle without a battery in it. You may
damage the vehicle’s system. If the engine spins, but doesn’t
start after several starting attempts, there is a problem with the
engine of the vehicle other than its starting system. STOP crank-
ing the engine until the other problem has been found and
corrected.