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Maintenance and servicing
11.1 General safety information for service and maintenance
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
• Depressurize the device. Shut off the gas inlets and gas outlets. Disconnect the gas lines
• Before opening or removing the device, ensure that process media cannot be released.
Danger due to gases in the enclosure
Inert gas in the housing can cause suffocation. The enclosure may also contain combustible
substances which are located within the ignitable area.
• Ensure sufficient ventilation in the room. When opening the device, avoid breathing in
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 off, 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 off.
• Take appropriate protective measures, for example contact protection.
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
144
WARNING
device is under pressure.
from the device.
WARNING
directly beside the housing.
CAUTION
CAUTION
the inside of the device.
Operating Instructions, 07/2023, A5E31930403-AB
Wall-mounted device
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