Schumacher BT55U Tester Owner's manual

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BATTERY TEST

CONNECT CLAMPS

TO THE BATTERY.

POSITIVE (RED), THEN

NEGATIVE (BLACK).

CHECK THE DISPLAY

AND REFER TO THE

VOLTAGE TABLE FOR

12V BATTERY’S STATE

OF CHARGE. FOR 6V

BATTERY, DIVIDE BY 2.

FOR 24V BATTERY,

DOUBLE THE NUMBER.

SWITCH

HEADLIGHTS OFF

TEST, FOLLOWING

INSTRUCTIONS ABOVE

PASS (GREEN LIGHT):

GOOD ALTERNATOR

AND SYSTEM

IS FUNCTIONING

PROPERLY

FAIL (RED LIGHT):

BAD ALTERNATOR

OR SYSTEM IS

OVERCHARGING/

UNDERCHARGING

MAKE SURE ENGINE IS

NOT RUNNING AND KEY

IS IN OFF POSITION

REMOVING

SURFACE CHARGE

ADVANCE TEST

SWITCH HEADLIGHTS

ON FOR 1-2 MINUTES

WAIT 10 MINUTES

ALTERNATOR TEST

INSTRUCTIONS ABOVE,

THEN START ENGINE

BT55U SYMBOL KEY