Schumacher Electric XC75-CA Operations Instructions download pdf (Page 8)

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5. NOTE: During extremely cold weather,

or if the battery is under 2 volts,

charge the battery for 5 minutes

before cranking the engine.

6. If the engine fails to start, charge the

battery for 5 more minutes before

attempting to crank the engine again.

7. After the engine starts, unplug the AC

power cord before disconnecting the

battery clamps from the vehicle.

8. Clean and store the charger in a dry

location.

NOTE: If the engine does turn over but

never starts, there is not a problem with

the starting system; there is a problem

somewhere else with the vehicle. STOP

cranking the engine until the other problem

has been diagnosed and corrected.

ENGINE STARTING NOTES

During the starting sequence listed above,

the charger is set to one of three states:

• Wait for cranking – The charger waits

until the engine is actually being cranked

before delivering the amps for engine start

and will reset if the engine is not cranked

within 15 minutes. (If the charger resets, it

sets itself to the default start up settings).

While waiting for cranking, the digital

display shows rdy.

• Cranking – When cranking is detected,

the charger will automatically deliver up

to its maximum output as required by

the starting system for up to 3 seconds

or until the engine cranking stops. The

digital display shows a countdown of the

remaining crank time.

• Cool Down – After cranking, the charger

enters a mandatory 3 minute (180 second)

cool down state. The digital display

indicates the remaining cool down time in

seconds. It starts at 180 and counts down

to 0. After 3 minutes, the digital display will

change from displaying the countdown to

displaying rdy. The CHARGING LED

will then be lit.

USING THE BATTERY VOLTAGE

TESTER

1. With the charger unplugged from the

AC outlet, connect the charger to the

battery, following the instructions given

in previous sections.

2. Plug the charger AC power cord into

the AC outlet.

3. If necessary, press the BATTERY TYPE

button until the correct type is indicated.

4. Read the voltage on the digital display.

Keep in mind that this reading is only a

battery voltage reading; a false surface

charge may mislead you. Compare the

reading to the following chart.

6V Battery

Voltage Reading

12V Battery

Voltage Reading

Battery

Condition

6.4 or more 12.8 or more Charged

6.1 to 6.3 12.2 to 12.7

Needs charging

Less than 6.1 Less than 12.2 Discharged

TESTER AND CHARGER

When rst turned on, the unit operates

only as a tester, not as a charger.

Selecting a charge rate activates the

battery charger and deactivates the tester.

Pressing the RATE SELECTION button

when the ENGINE START LED is lit

(except during the 180 second cool down)

will shut off the charger and activate the

tester.

POWER-UP IDLE TIME LIMIT

If no button is pressed within 10 minutes

after the battery charger is rst powered

up, the charger will automatically switch

from tester to charger if a battery is

connected. In that case, the charger will

be set to the Charging/Maintaining rate

and gel cell battery type.

TESTING AFTER CHARGING

After the unit has been changed from

tester to charger (by selecting a charge

rate), it remains a charger. To change the

battery charger back to a tester, press the

RATE SELECTION button until all charge

rate LEDs are off.

NOTE: The battery tester is only designed

to test batteries. Testing a device with

a rapidly changing voltage could yield

unexpected or inaccurate results.

USING THE ALTERNATOR

PERFORMANCE TESTER

1. With the charger unplugged from the

AC outlet, connect the charger to the

battery, following the instructions given

in previous sections.

2. Plug the charger AC power cord into

the AC outlet.

3. Start the vehicle and turn on the

vehicle’s headlights. Read the voltage

on the digital display. If you get a

reading between 13.4 volts and 14.6

volts, the alternator is working properly.

If the reading is less than 13.4 volts

or more than 14.6 volts, have the

charging system checked by a qualied

technician.

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Schumacher Electric XC75-CA Operations Instructions Page 8

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