ABB SCK, System Manual

Page: 161 / 244

42/23-81 EN Rev. 4 System Manual SCK Gas Sampling System 161
Checking the condition of the system, cleaning the system
Check the condition of the gas sampling system at regular intervals; in the event of
safety-relevant defects, inform the responsible maintenance personnel. If you
observe any unusual noises, follow the recommendations in
Errors on page 213.
If necessary, submit the gas sampling system to rough cleaning. Special attention
should be given to the following:
 dust under covers and in connection boxes
 excessive dirt on the surface of the modules
 excessive soiling of the runner in the probe retractor
 heat exchanger cooling fins
 daily
Always take the following safety measures when performing the work described
below:

Wear the general protective equipment.

Turn the service switch to ON and secure the service switch against unauthor-
ized switching (with a padlock).

Additionally press the EMERGENCY STOP switch.
 Do not enter the danger area around the retractor until it is at standstill and the
warning lamps and buzzer are off and the shutter is closed.
 Do not touch the gas sampling system until it has cooled down to 50 °C.
 Do not approach the retracted probe until it has cooled down.

Always keep the floor around the gas sampling system clean and dry.
When performing any cleaning work:
 Wear a dust mask when cleaning.
 Wash any dust off the skin immediately with water and soap.

Ensure adequate ventilation of the work place.
Checking and cleaning the probe retractor:
 If work is unavoidable in the area of the duct opening, lock the shutter before
commencing work and wear respiratory protection.
 Avoid contact with lubricating oil.
 Wash any lubricating oil off the skin immediately with water and soap.

If any lubricating oil gets in the eyes despite protective glasses, rinse them thor-
oughly under running water, holding the eyelids open.

Observe instructions in the lubricating oil manufacturer's safety data sheet.
Checking the duct opening:
 Preferably check and clean the duct opening when the rotary kiln is out of opera-
tion. If you clean the duct opening when the rotary kiln is in operation.
 Wear a face mask against heat, heat-proof gloves and protective welder's
clothing and respiratory protection against toxic gases.
 Keep the time in which the feedthrough opening is open as short as possi-
ble.
Checking and cleaning the cooling module:
 Do not perform work on the cooling water circuit until the gas sampling system
has cooled down.
 Avoid contact with the cooling water and the anti-freeze.
Meaning
Maintenance interval
Safety measures