ABB SCK - Probe Retractor: Checking the Bellows

42/23-81 EN Rev. 4 System Manual SCK Gas Sampling System 205
Probe retractor: Checking the bellows
 every two years
Always take the following safety measures when performing this work:
 Wear the general protective equipment.
 Turn the service switch to ON and secure the service switch against unauthor-
ized switching (with a padlock).
 Do not enter the danger area around the retractor until it is at standstill and the
warning lamps and buzzer are off and the flap valve is closed.
 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.
 Do not approach the retracted probe until it has cooled down.
 When the warning lamps light up or the earning buzzer buzzes, leave the danger
area around the probe retractor immediately as the probe is about to move at
any moment.
 Press the EMERGENCY STOP switch immediately if anyone is still in the dan-
ger area around the retractor after the warning lamps light up or the warning
buzzer buzzes.
Explanation of safety measures: Safety regulations for maintenance work on page
156.
The following conditions must be met:
 The service switch is in the ON position; the gas sampling probe is retracted
from the kiln (see Operating the service switch on page 159).
 The EMERGENCY STOP switch is pressed.
Proceed as follows to check the bellows:
Step Procedure
1
Unscrew the hose clamps on the cover.
2
Remove cover.
3
Check condition of retractor bellows:
 general damage
 cracks
 abrasion
4
If the condition necessitates replacement, consult the service man-
ual.
5
Put cover back on.
6
Fit and tighten hose clamps.
7
Unlock EMERGENCY STOP switch, turn service switch back to
OFF position and insert gas sampling probe again using the con-
troller.
WARNING! Gas sampling probe moves into the kiln. Do not stand
in the area of travel of the gas sampling probe or probe car-
riage until the probe is completely inserted into the kiln and
the warning lamps go out.
Maintenance interval
Safety
measures
Requirements
Instructions