hitachi — Precautions for Diesel Exhaust Fluid (DEF)

SAFETY Avoid Applying Heat to Lines Containing Flammable Fluids Do not weld or flame cut pipes or tubes that contain flammable fluids. Clean them thoroughly with nonflammable solvent before welding or flame cutting them. Precautions for Handling Accumulator and Gas Damper High-pressure nitrogen gas is sealed in the accumulator and the gas damper. Inappropriate handling may cause explosion, possibly resulting in serious injury or death. Strictly comply with the following items: Do not disassemble the unit. Keep the units away from open flames and fire. Do not bore a hole, do not cut by torch. Avoid giving shocks by hitting or rolling the unit.

Before disposing the unit, sealed gas must be released. Consult your nearest authorized dealer. Precautions for Diesel Exhaust Fluid (DEF) Diesel exhaust fluid (DEF), commonly referred to as AdBlue®, is an aqueous urea solution used as a consumable in selective catalytic reduction (SCR) to lower NOx concentration in the exhaust emissions from the engine. It is a non-flammable and non-hazardous solution, and harmful effects are not expected under normal conditions of use. In case of a fire, DEF would decompose and generate ammonia gas when heated to 160 °C (320 °F) or higher. Ammonia gas may cause lung injury and potentially is fatal if inhaled.

It is a corrosive gas and the liquefied gas can cause frostbite and corrosive injury to eyes and skin. In case of contact, immediately flush skin with plenty of water at least 15 minutes while removing contaminated clothing. Get medical attention if symptoms occur. DEF is corrosive to steel, aluminium, copper and brass, etc. If DEF is spilled on your vehicle, wipe off and rinse with water. For the handling of DEF, follow handling precautions on Material Safety Data Sheet. Have suitable emergency equipment for fires, spills and leaks readily available. Practice good housekeeping. Maintain handling equipment. Comply with applicable regulations. S-32