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1.3.1 Working environment and working conditions
Do not use the unit in any of the following places. Doing so may cause malfunction or reduction in service life.
⋅ Place where the ambient temperature exceeds the working temperature range
(− 5°C to 55° C)
⋅ Place where the humidity exceeds the humidity range (30% to 80%RH) or
condensation occurs
⋅ Place with much dust, corrosive gas, salt or oily smoke
⋅ Place where the unit may be exposed to rain or drops of water
⋅ Place where metallic particles or inductive substanc es are dispersed
⋅ Place where the daily mean temperature
exceeds 35° C
⋅ Place with much vibration or impact
⋅ Place exposed to direct sunlight
⋅ Place with strong electromagnetic field or
much foreign noise

1.3.2 Installation and connection
Before installing and connecting the unit, read the instruction manual without fail. For safety, the unit shall be installed an d
connected by experts in electrical work.