Schumacher SI-1275A - Manual (Page 29)

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4.3 Do not set the battery on top of the charger.
4.4 Never allow battery acid to drip onto the charger when reading the electrolyte specific
gravity or filling the battery.
4.5 Do not operate the charger in a closed-in area or restrict the ventilation in any way.
5. DC CONNECTION PRECAUTIONS
5.1 Connect and disconnect the DC output clips only after setting all of the charger switches to
the “off” position (if applicable) and removing the AC plug from the electrical outlet. Never
allow the clips to touch each other.
5.2 Attach the clips to the battery and chassis, as indicated in sections 6 and 7.
6. FOLLOW THESE STEPS WHEN BATTERY IS INSTALLED IN VEHICLE
A SPARK NEAR THE BATTERY MAY CAUSE A
BATTERY EXPLOSION. TO REDUCE THE RISK
OF A SPARK NEAR THE BATTERY:
6.1 Position the AC and DC cables to reduce the
risk of damage by the hood, door and moving or
hot engine parts. NOTE: If it is necessary to close
the hood during the charging process, ensure that the hood does not touch the metal part
of the battery clips or cut the insulation of the cables.
6.2 Stay clear of fan blades, belts, pulleys and other parts that can cause injury.
6.3 Check the polarity of the battery posts. The POSITIVE (POS, P, +) battery post usually has
a larger diameter than the NEGATIVE (NEG, N, -) post.
6.4 Determine which post of the battery is grounded (connected) to the chassis. If the negative
post is grounded to the chassis (as in most vehicles), see step 6.5. If the positive post is
grounded to the chassis, see step 6.6.
6.5 For a negative-grounded vehicle, connect the POSITIVE (RED) clip from the battery
charger to the POSITIVE (POS, P, +) ungrounded post of the battery. Connect the
NEGATIVE (BLACK) clip to the vehicle chassis or engine block away from the battery. Do
not connect the clip to the carburetor, fuel lines or sheet-metal body parts. Connect to a
heavy gauge metal part of the frame or engine block.
6.6 For a positive-grounded vehicle, connect the NEGATIVE (BLACK) clip from the battery
charger to the NEGATIVE (NEG, N, -) ungrounded post of the battery. Connect the
POSITIVE (RED) clip to the vehicle chassis or engine block away from the battery. Do not
connect the clip to the carburetor, fuel lines or sheet-metal body parts. Connect to a heavy
gauge metal part of the frame or engine block.
6.7 Connect charger AC supply cord to electrical outlet.
6.8 When disconnecting the charger, turn all switches to off, disconnect the AC cord, remove
the clip from the vehicle chassis and then remove the clip from the battery terminal.
6.9 See Calculating Charge Time for length of charge information.
7. FOLLOW THESE STEPS WHEN BATTERY IS OUTSIDE VEHICLE
A SPARK NEAR THE BATTERY MAY CAUSE A
BATTERY EXPLOSION. TO REDUCE THE RISK
OF A SPARK NEAR THE BATTERY:
7.1 Check the polarity of the battery posts. The
POSITIVE (POS, P, +) battery post usually has a
larger diameter than the NEGATIVE (NEG, N, -) post.
7.2 Attach at least a 24-inch (61 cm) long 6-gauge (AWG) insulated battery cable to the
NEGATIVE (NEG, N, -) battery post.
7.3 Connect the POSITIVE (RED) charger clip to the POSITIVE (POS, P, +) post of the battery.
7.4 Position yourself and the free end of the cable you previously attached to the NEGATIVE
(NEG, N, -) battery post as far away from the battery as possible – then connect the
NEGATIVE (BLACK) charger clip to the free end of the cable.
7.5 Do not face the battery when making the final connection.
7.6 Connect charger AC supply cord to electrical outlet.
7.7 When disconnecting the charger, always do so in the reverse order of the connecting
procedure and break the first connection while as far away from the battery as practical.
7.8 A marine (boat) battery must be removed and charged on shore. To charge it onboard
requires equipment specially designed for marine use.
WARNING WARNING WARNING
WARNING WARNING WARNING