2 Installation
16
Connecting the Monitor to AC Mains
FM20/30 The monitor is an electrical Class II device in which the protection against electric shock does not rely
on basic insulation and a protective earth conductor but on double and/or reinforced insulation.
FM40/50 The monitor is an electrical Class I device. Protection against electric shock is provided by a protective
earth conductor.
The monitor has a wide-range power supply that allows you to operate the monitor from an AC
(alternating current) power source of 100 V to 240 V (± 10%) and 50 or 60 Hz (± 5%).
WARNING
• Always use the supplied power cord with the earthed mains plug to connect the monitor to an
earthed AC mains socket. Never adapt the mains plug from the power supply to fit an unearthed
AC mains socket.
• Check that the line frequency is correctly set for your institution (50 Hz or 60 Hz) before putting
the monitor into service.
• FM20/FM30 only: The protective earth conductor is required for EMC purposes. It has no
protective function against electric shock! The protection against electric shock in this device is
provided by double and/or reinforced insulation.
• Do not use AC mains extension cords or multiple portable socket-outlets.
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