Hitachi ZX 38U-5A Technical Manual page 38

Precautions for Welding and Grinding
 Welding may generate gas and/or small fires.
 Be sure to perform welding in a well ventilated and
prepared area. Store flammable objects in a safe place
before starting welding.
 Only qualified personnel should perform welding. Never
allow an unqualified person to perform welding.
 Grinding on the machine may create a fire hazard. Store
flammable objects in a safe place before starting grinding.
 After finishing welding and grinding, recheck that there are
no abnormalities such as the area surrounding the welded
area still smoldering.
Avoid Heating Near Pressurized Fluid Lines
 Flammable spray can be generated by heating near
pressurized fluid lines, resulting in severe burns to yourself
and bystanders.
 Do not heat by welding, soldering, or using a torch near
pressurized fluid lines or other flammable materials.
 Pressurized lines can be accidentally cut when heat goes
beyond the immediate flame area. Install temporary
fire resistant guards to protect hoses or other materials
before engaging in welding, soldering, etc.
Avoid Applying Heat to Lines Containing
Flammable Fluids
 Do not weld or flame cut pipes or tubes that contain
flammable fluids.
 Remove flammable fluids thoroughly with nonflammable
solvent before welding or flame cutting pipes or tubes
that contained flammable fluids.
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 Hitachi dealer.
SAFETY
SA-32
SA-818
SA-030