Siemens SIPROCESS GA700 Operating Instructions Manual page 124

Maintenance and servicing
11.1 General safety instructions
Danger of suffocation by inert gas
Inert gas in the enclosure can cause danger of suffocation. The enclosure also contains a
flammable substance which is within the flammable range when it comes into contact with
air.
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 off 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.
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 the inside of the device.
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WARNING
WARNING
CAUTION
CAUTION
Wall-mounted device
Operating Instructions, 05/2018,
A5E31930403-06