5
2. Before operating the unit
Precautions when installing the unit
Warning
3. Never operate the unit in an atmosphere containing explosive or flammable gas
Never operate the unit in an atmosphere containing flammable or explosive gas. Since the
unit is not explosion-proof, an arc is discharged when turning a switch “ON” and “OFF” and
during operation and a fire or an explosion may result.
See the section
“
13. List of dangerous materials” on page 43 for flammable and explosive
gases.
Never use the unit with an explosive material, a flammable material or a material containing
them. An explosion or a fire may result.
See the section “13. List of dangerous materials” on page 43 for flammable and explosive
substances.
Explosive
gas
Combustible
gas
Explosive
substance
Combustible
substance