Locations exposed to direct sunlight or other sources of strong light (more than 1,500 lux).
Locations directly exposed to cool air from an air conditioner or heated air from a heater. (Sudden temperature changes can cause condensation to form inside the machine.)
Locations close to machines generating ammonia, such as a diazo copy machine.
Places where the machine is subject to frequent strong vibration.
Places where the machine is exposed to dampness or wet weather, such as rain and snow.
Dusty areas.
Areas with corrosive gases.