Volvo VAH 2013, Руководство оператора, Страница: 47 / 175

Operator's Manual Vehicle Maintenance
VN, VHD 43
Electric System Damage Prevention
Electric and Electronic Systems
WARNING
Always wear eye protection when working around batteries to prevent the risk of
injury due to contact with sulfuric acid or an explosion.
W0001526
Never disconnect any charging unit circuit or battery circuit cable from the battery
when the charging unit is operating. A spark can cause the flammable vapor mixture
of hydrogen and oxygen to explode.
To prevent potential sparks from igniting combustible gases produced by some
batteries, attach the negative (-) terminal last when hooking up and remove the
negative terminal first after the engine has started. Check regularly around the engine
and engine compartment for loose or frayed wires. Have all loose or frayed electrical
wires tightened, repaired or replaced before operating the vehicle.
Grounding Practices
Proper grounding for vehicle and engine electrical and electronic systems is necessary
for proper vehicle and engine performance and reliability. Improper grounding will
result in uncontrolled and unreliable electrical paths.
Uncontrolled engine electrical circuit paths can result in damage to main bearings,
crankshaft journals surfaces and aluminum components. Uncontrolled electrical
circuit paths can also cause electrical noise which may degrade vehicle and radio
performance.
Operating engines without the engine-to-frame ground strap installed can cause
damage to the engine. To prevent electrical discharge damage, check to make sure the
engines electrical system has an engine-to-frame ground strap. All ground connections
should be tight and free of corrosion.