WARNING
Danger from gas lines under pressure
Danger of injury during maintenance work
Hot, toxic or corrosive sample gases can be released when the gas lines are opened. Prevent
gases from exiting prior to opening or removing the device.
• Do not loosen process connections and do not remove any pressurized parts while the
device is under pressure.
• Depressurize the device. Shut o the gas inlets and gas outlets. Disconnect the gas lines
from the device.
• Before opening or removing the device, ensure that process media cannot be released.
WARNING
Danger due to gases in the enclosure
Inert gas in the housing can cause suocation. The enclosure may also contain combustible
substances which are located within the ignitable area.
• Ensure sucient ventilation in the room. When opening the device, avoid breathing in
directly beside the housing.
CAUTION
Hot surfaces resulting from hot sample gases and heated devices
Danger of burns resulting from surface temperatures above 70°C (155°F)
After being switched o, the device and its parts are still very hot. Touching can result in skin
burns.
• Begin the maintenance / shutting down once the device has cooled o.
• Take appropriate protective measures, for example contact protection.
CAUTION
Faults at the device
For faults which you are unable to eliminate, place the device out of service and protect it
against inadvertent commissioning.
NOTICE
Penetration of moisture into the device
Device damage.
• Make sure when carrying out cleaning and maintenance work that no moisture penetrates
the inside of the device.
Maintenance and servicing
11.1General safety information for service and maintenance
Wall-mounted device
144 Operating Instructions, 07/2023, A5E31930403-AB
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