Case CX490D, Operator'S Manual

Page: 207 / 370

6 - MAINTENANCE
Protecting the electronic and electrical systems during battery
charging or welding
DANGER
Improper operation or service of this machine can result in an accident.
Any unauthorized modifications made to this machine can have serious consequences. Consult an
authorized dealer on changes, additions, or modifications that may be required for this machine. Do
not make any unauthorized modifications.
Failure to comply will result in death or serious injury.
D0030A
DANGER
Battery acid causes burns. Batteries contain sulfuric acid.
Avoid contact with skin, eyes or clothing. Antidote (external): Flush with water. Antidote (eyes): flush
with water for 15 minutes and seek medical attention immediately. Antidote (internal): Drink large
quantities of water or milk. Do not induce vomiting. Seek medical attention immediately.
Failure to comply will result in death or serious injury.
D0117A
Whenever carrying out a welding operation on the undercarriage or upperstructure carriage as authorized by the
manufacturer and in accordance with his instructions, disconnect the batteries, disconnect the alternator B+ and D+
terminal wires and connect the welding apparatus earth cable to the component on which the welding operation is
to be performed. Never connect the welding apparatus to the undercarriage when welding on the upperstructure (or
vice-versa). Never connect the welding apparatus earth to a component of the hydraulic system.
To avoid damage to the electronic/electrical systems,
always observe the following:
• Never make or break any of the charging circuit con-
nections, including the battery connections, when the
engine is running.
• Never short any of the charging components to ground.
• Make sure to set the battery disconnect switch to
OFF position in advance or cut-off the connection of
the ground cable when executing arc welding to the
machine.
• Always disconnect the negative cable from the battery
when charging the battery in the machine with a battery
charger.
NOTICE: position the welder ground clamp as close to the
welding area as possible. If welding in close proximity to
a computer module, then the module should be removed
from the machine. Never allow welding cables to lay on,
near or across any electrical wiring or electronic compo-
nent while welding is in progress.
NOTICE: if welding must be performed on the unit, either
the machine, the battery ground cable must be discon-
nected from the machine battery. The electronic monitor-
ing system and charging system will be damaged if this is
not done.
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