![background image](http://html1.mh-extra.com/html/ifm/ac422s/ac422s_original-operating-instructions_620684008.webp)
8
► Keep the installation space of the device free from electrically-conductive
particles.
Ensure a condensation-free environment. Avoid excessive dust, vibration
and shock. The air circulation through the vents must not be impeded.
Avoid installation in direct vicinity of frequency inverters or other interfering
sources.
6 Operating, connection and display elements
6.1 Operating and connection elements
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1: Device LEDs H1 green / yellow / red
2: Softkeys