ABB SCK - Page 159

OI/SCK
-EN Rev. E Operating instruction SCK Gas Sampling System 159
Danger of electric shock when working on electric components
 Only specialized electrical personnel may work on the electrical system.
 Disconnect the gas sampling system from the power supply before work-
ing on the electrical components.
 Observe national regulations pertaining to electrical equipment.
 The main terminals -X30, -X40 and the input terminals of the main
switches -Q30, -Q40 are live even when the main switches are off.
 All metallic parts in the environment that can be touched at the same
time as the machine must also be grounded together.
 Check pre-protection according to the documentation.
Danger of burning due to hot surfaces during and after operation of the gas
sampling system
 Do not touch the gas sampling system during and after operation.
 Do not touch the gas sampling system until it has cooled down to 50 °C.
Specifically, do not touch
 the cooling module,
 the heated sample gas line,
 the connection box for the heated sample gas line on the retractor,
 the heated sampling filter,
 the entire gas sampling probe,
 the metal structure of the retractor,
 the shutter of the duct opening.
 If it is unavoidable to touch hot components, wear a face mask against
heat, heat-proof gloves and protective welder's clothing.
Danger of burning due to material falling or spalling off the retracted probe
 Never enter the danger area around the retractor during operation.
 Do not approach the retracted probe until it has cooled down.
 If it is unavoidable to approach the hot probe, wear a face mask against
heat, heat-proof gloves and protective welder's clothing.
Danger due to harmful gases from the rotary kiln and jet flames in the area
of the shutter, particularly while the gas sampling probe is moving in and
out
 Ensure adequate ventilation of the work place.
 Only enter the danger area around the retractor when the shutter is closed.
 If work is unavoidable in the area of the duct opening, lock the shutter
before commencing work and wear respiratory protection.
Current-carrying
components
Hot surfaces
Falling or spalling hot
material
Harmful gases,
jet flames