Service And Maintenance; Safety Instructions; General Safety Instructions - Siemens ULTRAMAT 23 Series Equipment Manual

Service and maintenance

10.1

Safety instructions

10.1.1

General safety instructions

Dangerous voltage at open device
Danger of electric shock when the enclosure is opened or enclosure parts are removed.
• Before you open the enclosure or remove enclosure parts, de-energize the device.
• If maintenance measures in an energized state are necessary, observe the particular
Hot, toxic or corrosive process media
Danger of injury during maintenance work.
When working on the process connection, hot, toxic or corrosive process media could be
released.
• As long as the device is under pressure, do not loosen process connections and do not
• Before opening or removing the device ensure that process media cannot be released.
Impermissible repair and maintenance of the device
• Repair and maintenance must be carried out by Siemens authorized personnel only.
Electrostatic discharges
The electronic components and modules fitted in this device can be destroyed by electrostatic
discharging.
Comprehensive measures (such as the wearing of protective clothing by the maintenance
personnel) must therefore be made to prevent electrostatic discharging wherever they are
manufactured, tested, transported and installed.
ULTRAMAT 23
Equipment Manual, 04/2022, A5E37100388-012
CAUTION
precautionary measures. Have maintenance work carried out by qualified personnel.
WARNING
remove any parts that are pressurized.
WARNING
CAUTION
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